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Experimental investigation on chemical and thermomechanical properties of concrete incorporating Washingtonia Robusta fibers Adv. Cem. Res. (IF 2.0) Pub Date : 2024-03-25 Sakami Siham, Lahcen Boukhattem, Mustapha Boumhaout
This work aims to provide new composite material for thermal insulating building applications. The composite was made with mortar reinforced with natural fibers that were extracted from petiole of WR palm tree. The used fibers were first chemically characterized by EDS, SEM, X-ray and infrared diffractometry spectroscopies as well as tensile test to know their morphological structure. Afterward, the
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Durability of concrete subjected to acidic exposure attack under flexural loading Adv. Cem. Res. (IF 2.0) Pub Date : 2024-03-23 Beixing Li, Hongtian Yang, Xiaolu Yuan
Durability of concrete under the combined exposure of acidic environment and flexural loading has been studied. Concrete specimens were made and subjected to 168 days exposure to the flexural loading (stress levels of 0.0, 0.35 and 0.5 of their 28d flexural strength) and acidic exposure environment. Concrete properties including neutralization depth, mass change, compressive strength and flexural strength
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Effects of steam curing on the pore structure of recycled aggregate concrete Adv. Cem. Res. (IF 2.0) Pub Date : 2024-03-20 Yuzhi Chen, Yingjie Ning, Xudong Chen, Weihong Xuan, Yuzhu Guo
The pores in steam-cured concrete affect its strength and durability, and optimisation of the steaming system can improve the pore structure to some extent. However, the influence mechanism of evaporation on recycled aggregate concrete (RAC) remains unclear. In this paper, the effects of curing temperature (20°C, 40°C, 60°C and 80°C), steam curing time (6 h, 9 h and 12 h) and pozzolans (slag powder
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Solid solutions amongst cement AFm phases containing nitrate and nitrite ions Adv. Cem. Res. (IF 2.0) Pub Date : 2024-03-16 Magdalena Balonis
The AFm phase found in hydrated Portland cements refers to a family of calcium aluminate phases. Their layer structure is derived from that of portlandite, Ca(OH)2, but with one third of the Ca2+ ions replaced by a trivalent ion, nominally Al2+ or Fe2+. The resulting charge imbalance gives the layers a positive charge which is compensated by intercalated anions the remaining interlayer space is filled
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Chloride penetration resistance of concrete under dual effects of leaching and stress Adv. Cem. Res. (IF 2.0) Pub Date : 2024-03-11 Shaowei Wang, Wenlong Gao, Yanyu Xiao, Jiawen Wu, Qun Xia
Chloride penetration is one of the main causes for the failure of reinforced concrete structures, especially in undersea tunnels, which is also accompanied by stress and seepage water-induced calcium leaching. In this paper, the chloride penetration resistances of concrete under the single and dual effects of stress and calcium leaching were investigated, and the microscopic mechanism was explained
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Investigating the sulfate resistance of mortars with multiple mineral admixtures in ammonium-magnesium sulfate solution Adv. Cem. Res. (IF 2.0) Pub Date : 2024-03-11 Junfeng Wang, Yiming Chen, Qionglin Fu, Liulei Lu
This study aims to evaluate the sulfate resistant of mortars containing sulfate-resistant cementitious materials (SRCMs) developed by mixing ground granulated blast furnace slag, fly ash, silica fume, and desulfurization gypsum. Compressive strength test, XRD, DTA, and MIP were carried out in this work. The results showed that the sulfate resistance of mortars mixed with SRCMs at replacement percentage
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The dispersion and influence of graphene oxide modified polycarboxylate superplasticizer in alkaline cement solution Adv. Cem. Res. (IF 2.0) Pub Date : 2024-03-11 Han Zhou, Dongxu Li
The aggregation of graphene oxide (GO) in alkaline solutions is a critical factor that limits its potential application in cement-based materials. In this study, a novel superplasticizer was employed as a dispersant, and the GO@PCE water-reducing agent was synthesized through a dropwise addition method. This synthesis approach not only preserves the water-reducing capabilities of PCE but also enhances
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Synthesis and characterisation of supersulfated cements from kaolin, quartz and sodium hydroxide Adv. Cem. Res. (IF 2.0) Pub Date : 2024-02-27 Meixun Peng, Yuanpeng Zhang, Wenjuan Liu, Fei Song
Supersulfated cements (SSCs), as potential green alternatives to Portland cements, are in demand for developing new kinds of precursors instead of blast-furnace slag. A mixture of kaolin, quartz and sodium hydroxide was calcined to prepare SSC by grinding clinkers with lime and gypsum. Preparation factors were investigated and multiple characterisation methods were adopted to explore the calcination
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Preparation and accelerating mechanism of alkali-free liquid accelerator made with silicon residue containing fluorine Adv. Cem. Res. (IF 2.0) Pub Date : 2024-02-24 Dinghu Wu, Xiaotong Liu, Yuan Liu, Anxu Yang, Lin Yang
Fluorine-containing silicon residue (FSR) is a solid waste that is harmful to the environment. A new alkali-free liquid accelerator based on aluminium sulfate (LAFS) was prepared using FSR. The addition of LAFS to cement mortar shortened the setting times and significantly improved the early strength. With the addition of 8% LAFS, the initial and final setting times were 2.48 min and 11.83 min, respectively
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Influence of thermochemical high-temperature reconstruction on mechanical properties and activity of stainless steel slag Adv. Cem. Res. (IF 2.0) Pub Date : 2024-02-24 Pengjie Xu, Jintao Fan, Rongjin Liu, Ping Chen, Jiazhan Wei, Yi Yang, Xiaochun Tang
The stainless steel slag's low activity, primarily attributed to its high γ-C2S and low C3S content, impedes its effective utilization. This study employs a thermochemical high-temperature reconstruction method utilizing lime and bauxite as tempering agents to regulate the mineral phase. Through an array of tests and analytical techniques, including compressive strength test, activity index, XRD, SEM
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Utilisation of local raw materials and mine waste to manufacture cement in the Northwest Territories, Canada Adv. Cem. Res. (IF 2.0) Pub Date : 2024-02-23 Guangping Huang, Jian Zhao, Gideon Lambiv Dzemua, Scott Cairns, Philippe Normandeau, Wei Victor Liu
Currently, all the cement consumed in the Northwest Territories (NWT), Canada, is imported from other provinces (e.g. Alberta) by long-distance (∼1800 km) freight truck. Transporting cement over long distances not only raises its cost, but also results in a higher carbon footprint. Producing cement locally is therefore a potential low carbon and economic solution for the local industry. However, it
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Characteristics of corrosion products of steel bars in modified magnesium oxysulfide cement containing chloride salts Adv. Cem. Res. (IF 2.0) Pub Date : 2024-02-19 Mingfang Ba, Siyi Fang, Zhirui Xu, Gaoke Yu, Danlei Zhang
The effects of chlorides on the corrosion of steel bars within a matrix comprising modified magnesium oxysulfide (MMOS) cementitious materials was investigated. The phase composition, morphology and distribution of steel corrosion products (SCPs) were studied. There was basically no corrosion of the steel bars in the MMOS cement without chlorides. A high chloride content and a high water/cement (w/c)
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Compressive strength and chloride permeability of cement-based materials with high-volume compound mineral admixtures Adv. Cem. Res. (IF 2.0) Pub Date : 2024-02-19 Nannan Zhang, Qionglin Fu, Junfeng Wang, Liulei Lu, Qi Luo, Feng Xing
Ground granulated blast-furnace slag (GGBFS) is well known to be capable of improving the performance of cement-based materials, but few studies focus on the impact of its large dosage on concrete containing basalt powder. In this study, the compressive strength and chloride permeability of cement-based materials with compound mineral admixtures (CMAs) containing high-volume GGBFS, basalt powder and
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Enhancing piezoresistivity of cement sensor with supplementary materials and carbonation curing Adv. Cem. Res. (IF 2.0) Pub Date : 2024-02-08 Daeik Jang, Jinho Bang, Haemin Jeon
This study explores the fabrication of cement-based sensors blended with supplementary cementitious materials (SCM) using carbonation curing. The effects of SCM types (i.e. fly ash or slag) and curing conditions on CO2 uptake degree, compressive strength, electrical conductivity, and piezoresistive sensing capability were systematically examined. The results indicate that the inclusion of fly ash or
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Effect of gypsum content in cement on its adaptability to alkali-free accelerator at different temperatures Adv. Cem. Res. (IF 2.0) Pub Date : 2024-02-08 Qin Wang, Zhixiang Guo, Fanchao Zeng, Hongwei Wang, Huaixia Qin
The setting times and early strength of shotcrete are greatly affected by the gypsum content of the cement used. In this work, the setting times, compressive strength and microscopic analysis (X-ray diffraction quantitative analysis, thermogravimetric analysis and scanning electron microscopy) were used to determine the effects of changes in gypsum content on the hydration and mechanical properties
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Accelerated carbonation of regenerated binding material prepared with waste cement paste powder Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-30 Linnu Lu, Peng Wang, Yongjia He, Ma Jie, Fazhou Wang, Shuguang Hu
An approach for the efficient re-utilisation of waste cement paste powders is proposed, wherein the powders are heated to a certain temperature to prepare regenerated binding materials (RBMs), and then rapidly carbonated by high-concentration carbon dioxide to prepare high-strength products. The structural evolution during the heating process of waste cement paste powder and the carbonation process
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Effects of calcium impurities on the properties of magnesium oxychloride cement Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-30 Xinkuang Ning, Yong Zhang, Chengyou Wu
China's salt lakes contain an abundance of magnesium resources as high-magnesium brine, a by-product of potash fertiliser production is often discharged into salt lakes, causing environmental damage. Magnesium oxide from salt-lake brine can be used to produce magnesium oxychloride cement (MOC), but the calcium impurities present in salt lakes affect the properties of MOC. To investigate the effects
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Parametric analysis of the production of alternative sodium silicate applied in alkali-activated materials Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-30 Deise Trevizan Pelissaro, Suelen Cristina Vanzetto, Francisco Dalla Rosa, Pedro Domingos Marques Prietto, Adriana Augustin Silveira
Although alkali-activated materials (AAMs) are considered potential substitutes for Portland cement, they still come with elevated costs and significant carbon dioxide emissions. The development of alternative activators, such as sodium silicate based on the dissolution of rice husk ash (RHA), could partially overcome these disadvantages. However, to maximise the mechanical performance of AAMs, the
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Enhancing the performance of aerated concrete through accelerated curing and waste material integration Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-29 Pradyut Anand, Anand Kr Sinha, Puja Rajhans
In this paper, the mechanical and durability properties of aerated blocks are discussed. Aerated blocks are prepared using different cementitious materials with an alkaline solution in the absence of aluminium powder. The proportions of raw materials are chosen after performing two mix trials P1 and P2, keeping the density of the blocks constant at 800 kg/m3. Each mix is further tested under six curing
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Effect of additive compounding on early properties of belite sulfoaluminate cement Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-29 Juan Fu, Baorui Hu, Wei Guo, Yueyang Hu, Cuifeng Jiang
Belite sulfoaluminate cement is attracting increasing attention and being considered as a potential alternative to ordinary Portland cement owing to lower preparation temperature and carbon dioxide (CO2) emission. However, it still has disadvantages of poor workability and low early strength. This study investigated the effects of compound polycarboxylate superplasticiser (PCE) and early strength agent
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Further study of the erosion mechanism of calcium salt on 517 phase Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-19 Yan Guan, Xiao Han, Zhiqi Hu
As the main hydration product of magnesium oxysulfate (MOS) cement, 517 phase (5Mg(OH)2·MgSO4·7H2O) is one of the main sources of MOS cement strength. This paper mainly explores the erosion process and mechanism of calcium ions in the 517 phase. The 517 phase with 94.56% purity was synthesised and the erosion effect of different calcium salts on the 517 phase was characterised. Results show that, in
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Performance of the phase-change material (PCM) to reduce freeze–thaw effect in cementitious composites Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-12 Fatih Acikök, Mehmet Kemal Ardoğa, Mustafa Şahmaran
One of the contemporary approaches to reduce the damage to cementitious composite resulting from the freeze–thaw effect is the incorporation of phase-change materials (PCM). In this study, the composites were produced adding n-tetradecane, which is a microencapsulated organic PCM, at rates of 0, 2, 4, 6 and 8% of the cement weight. In two different simulations representing the climate conditions of
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Performance of cement mortar mixes containing fine reclaimed asphalt pavement aggregates and zinc waste Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-11 Surendra Kumar Saini, Surya Kant Sahdeo, G. D. Ransinchung RN, Praveen Kumar
Cement mortar mixes were prepared to test the suitability of fine reclaimed asphalt pavement (FRAP) aggregates as a replacement for natural fine aggregates (NFA). With different amounts of NFA (25%, 50%, 75% and 100% by weight) replaced with FRAP aggregates, the mechanical qualities of the mortar mix deteriorated. To counteract this, jarosite – a waste from the zinc industry – was used as a partial
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Effects of gold tailings dosage and polyvinyl alcohol fibre content on the frost resistance of ECC Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-11 Zhi Ge, Chuansong Chen, Yufeng Bi, Hongzhi Zhang, Yanhua Guan, Yongwei Yang, Yifeng Ling, Renjuan Sun
The effects of gold tailings and polyvinyl alcohol (PVA) fibre on the frost resistance of engineered cementitious composites (ECC) were investigated. The ECC were made with three gold tailings dosages and four PVA fibre contents. A water/binder (w/b) ratio of 0.28 was used for all mixtures. Surface damage, mass loss, relative dynamic elastic modulus, compressive strength and damaged layer thickness
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Investigation of dynamic compression properties of basalt fibre reactive powder concrete Adv. Cem. Res. (IF 2.0) Pub Date : 2024-01-11 Haiyang Sha, Jinchun Liu, Xianwen Fu
Basalt fibre reactive powder concrete (BFRPC) was prepared by incorporating basalt fibres (BFs) instead of steel fibre into reactive powder concrete. In this study, the impact resistance of BFRPC was experimentally and numerically analysed at different strain rates (101–102 s−1). The 75 mm dia. split-Hopkinson pressure bar was used for impact compression tests and the finite-element software LS- Dyna
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Hydration properties of composite cementitious materials containing steel slag under steam curing condition Adv. Cem. Res. (IF 2.0) Pub Date : 2023-12-28 Maosen Li, Xiao Liang, Long Chen, Shuhua Liu
Steel slag (SS) is a by-product of the steel industry, and its recycling is of great significance. In this study, the influence of SS fineness and curing regimes on the hydration properties of cement and the effects of SS content on the compressive strength of pastes were investigated. The hydration products and microstructure of pastes were further explored through X-ray diffraction (XRD) and scanning
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Effects of thermal activation on the hydration performance of lithium slag–cement composite binder Adv. Cem. Res. (IF 2.0) Pub Date : 2023-12-06 Yan He, Chunyang You, Shuhua Liu, Mingjing Jiang, Pengcheng Shi
In order to enhance the utilisation efficiency of lithium slag (LS) in cement-based materials, calcification and thermal activation of LS were conducted, and the activation mechanism was analysed. Results showed that gypsum and spodumene in LS decomposed at high temperature by way of calcification and thermal activation, and spodumene as well as limestone calcination decomposed at high temperature
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Effect of gypsum on the hydration of fused cement clinker from basic oxygen furnace slag Adv. Cem. Res. (IF 2.0) Pub Date : 2023-11-24 Katharina Schraut, Burkart Adamczyk, Christian Adam, Dietmar Stephan, Birgit Meng, Sebastian Simon, Julia von Werder, Tamino Hirsch, Tanja Manninger
Fused cement clinker can be produced from molten basic oxygen furnace slag (BOFS) via a reductive thermochemical treatment. During the thermochemical treatment, oxidic iron is reduced to metallic iron and separated. The resulting low-iron slag has a chemical and mineralogical composition similar to ordinary Portland cement (OPC) clinker. In this study, the hydraulic reactivity of the fused clinker
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Processing of calcium sulfoaluminate eco-cement coatings containing microencapsulated phase change materials Adv. Cem. Res. (IF 2.0) Pub Date : 2023-11-11 Andrea Romero-Espinosa, Susana G. Sanfélix, Alejandro Morales-Cantero, Ana Cuesta, Anna-Lena Kjøniksen, Miguel A. G. Aranda, Angeles G. De la Torre, Isabel Santacruz
On the one hand, calcium sulfoaluminate (CSA) eco-cements release about 40% less carbon dioxide (CO2) than Portland cement during fabrication; on the other hand, phase change materials dispersed in a cementitious matrix can help to optimise the indoor temperature of buildings, reducing carbon dioxide emissions related to heating/air conditioning. However, this is only economically viable if it is used
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Effect of the use of retardant chemical additive in concrete on rebar corrosion Adv. Cem. Res. (IF 2.0) Pub Date : 2023-11-11 Behçet Dündar, Emriye Cinar Resuloğullari, Turhan Can Karci
Reinforced concrete (RC) is one of the most widely used building materials. However, RC, especially in coastal seaside or humid environments, can suffer reinforcement corrosion with the result that the reinforcement fails to perform its function over time. The effect of a retarder additive used to eliminate loss of consistency in hot, windy and humid weather on the corrosion of RC elements was investigated
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Effects of waste magnesia powder as partial cement replacement on self-compacting concrete Adv. Cem. Res. (IF 2.0) Pub Date : 2023-11-08 Songül Can, Ali Sariisik, Tayfun Uygunoğlu
This experimental study investigated the performance of self-compacting concrete (SCC) mixes with magnesia (MgO) waste. In the series produced with a water/binder ratio of 0.40, cement was replaced by magnesia waste at 2%, 4% and 10% by weight in the SCC. Le Chatelier test, slump flow, compressive strength, flexural strength, depth of penetration of water under pressure, ultrasonic pulse velocity and
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Acoustic behaviour of Portland cement paste with sodium gluconate additive during hydration Adv. Cem. Res. (IF 2.0) Pub Date : 2023-10-25 Xu Dongyu, Chen Huaicheng, Hao Longlong, Zhao Hongyi, Guan Xuemao, Hu Yan, Sha Fei
The ultrasonic pitch–catch method was used to study the hydration behaviour of Portland cement paste with sodium gluconate (SG) additive using a tailor-made piezoelectric transducer. X-ray diffraction analysis showed that the intensity of the diffraction peak of calcium hydroxide decreased with increasing SG content (CSG), especially for CSG > 0.10 wt%. The compressive strength of the hardening cement
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Expansion properties of concrete containing circulating fluidised bed fly ash for use in concrete-filled steel tubes Adv. Cem. Res. (IF 2.0) Pub Date : 2023-10-17 Ruizhen Yan, Guoju Ke, Dongxiao Han
In the context of green and low-carbon materials development, the influence of replacing cement with circulating fluidised bed fly ash (CFBFA) on the expansion properties of paste under different curing conditions was first systematically investigated. Then, self-compacting concretes (SCCs) with recycled aggregate (RA) and CFBFA were prepared for filling steel tubes. The experimental results showed
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Characterization of cement loaded with magnetically aligned nano-magnetite Adv. Cem. Res. (IF 2.0) Pub Date : 2023-10-16 Taha M. Jassam, Bonnie Lau, Jason Ng Yang-Zhi, Kow Kien-Woh, Ramez A. Al-Mansob, Bariş Erdil, Wenjie Luo
In this study, the effect on the compressive strength of cement with the addition of 1-5 wt% nano-magnetite particles (nano-Fe3O4) has been identified at the age of 7 days and 28 days curing. In addition, an approach of aligning these nano-magnetite particles within cement using an external magnetic field was presented, where the orientation of nano-magnetite particles was aligned parallel to the compressive
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Effect of sisal fibre treatment on the hydration and thermophysical properties of a cement biocomposite Adv. Cem. Res. (IF 2.0) Pub Date : 2023-10-04 Bouchra Bahja, Lhaj el Hachemi Omari, Abdselem Tizliouine, Assaad Elouafi, Hayat Salhi, Mohammed Chafi
Cement-based biocomposites are a current area of construction research. Plant fibres retard the setting times of cement due to their hydrophilic nature and the thermal properties of raw cement mortar containing plant fibres can be problematic. This aim of this work was to study the effect of fibre treatment to reduce the hydrophilicity of natural fibres while enhancing the thermal properties of the
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Estimation of compressive strength of cement mortars using impulse excitation technique and a genetic algorithm Adv. Cem. Res. (IF 2.0) Pub Date : 2023-09-20 Muftah Mohamed Baroud, Arif Sari, Sherzod Shukhratovich Abdullaev, Majid Samavatian, Vahid Samavatian
Compressive strength, a crucial mechanical property of cement mortars, is typically measured destructively. However, there is a need to evaluate the strength of unique cement-based samples at various ages without causing damage. In this paper, a predictive framework using a genetic algorithm (GA) is proposed for estimating the compressive strength of ordinary cement-based mortars based on their dynamic
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Computational study of multiphase flow in cement plant gas conditioning towers: a review Adv. Cem. Res. (IF 2.0) Pub Date : 2023-09-06 Mohammad Hossein Abbaszadeh, Javad Sepahi-Younsi
Gas conditioning towers (GCTs) or cooling towers have broad industrial applicability, especially in the cement industry. Most cement factories deal with the same problems faced by other factories. However, the solutions to these problems are barely internationally published and have not received much attention, meaning a lot of time and money is spent on researching previous solutions. Iran is among
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Potential of sodium chloride solution as mixing water in calcium aluminate cement modified with siliceous minerals Adv. Cem. Res. (IF 2.0) Pub Date : 2023-08-24 Yue Zhou, Yuting Chen, Zhongping Wang, Zheyu Zhu, Linglin Xu
Calcium aluminate cement (CAC) is advantageous in marine engineering, and using materials directly from the sea when mixing CAC can reduce both construction costs and ecological pollution to the sea. However, using seawater as the mixing water in CAC is difficult due to the strength reduction. In this work, CACs were prepared with siliceous minerals (SMs) (diatomite and silica fume (SF)) and sodium
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Comprehensive modelling of drying shrinkage strain of graphene oxide nanosheet concrete Adv. Cem. Res. (IF 2.0) Pub Date : 2023-08-02 Mohammad Javad Mahmoodi, Masoumeh Khamehchi, Mohammad Safi
A comprehensive semi-empirical model was developed to predict the drying shrinkage strain (DSS) of concrete reinforced with graphene oxide nanosheets (GONs). The model includes various internal and external parameters. The effects of three factors (the age when drying starts, the GON content and aspect ratio) on the DSS of concrete reinforced with GONs were investigated. Compared with the results of
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Microstructure and physical properties of fly-ash-based geopolymer with the addition of expanded vermiculite Adv. Cem. Res. (IF 2.0) Pub Date : 2023-08-02 Yi Huang, Xiangdong Qing, Li Lin, Bicai Li, Lin Xu, Yinglin Peng
Fly-ash-based geopolymer pastes with the addition of expanded vermiculite (EV) powder were synthesised and their microstructure, compressive strength, setting time, moisture control, extent of efflorescence and thermal conductivity were studied. It was found that the addition of EV resulted in an increase in the standard-consistency water consumption and setting times. As a consequence, excessive addition
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Improving capillary water absorption of high-volume fly ash mortar by curing temperature and limestone addition Adv. Cem. Res. (IF 2.0) Pub Date : 2023-07-27 Yunfei Di, Haitao Zhao, Xiaoxiong Li, Yun Chen, Zhenqing Shi, Xiaolei Man
The effects of curing temperature (20°C, 40°C and 60°C) and the addition of limestone powder (LP) (6% and 12%) on the capillary water absorption (CWA) of high-volume fly ash (HVFA) cement mortar were investigated. X-ray diffraction analysis and tests for chemically bound water content (CBWC), compressive strength and porosity were also conducted. It was found that, for a fly ash (FA) content exceeding
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Fingerprinting Portland cements by means of 87Sr/86Sr and 143Nd/144Nd isotope ratios and geochemical profiles Adv. Cem. Res. (IF 2.0) Pub Date : 2023-07-18 Anera Kazlagić, Stephan Dietmar, Markus Ostermann, Antonio Possolo, Jochen Vogl
This study uses conventional 87Sr/86Sr and 143Nd/144Nd isotope and interelement ratios of Ca, Sr, K, Mn, Mg and Ti as fingerprints for provenancing ordinary Portland cements (OPC). Herein, the first database of Sr and Nd isotope ratios investigated in OPCs, stemming from 29 cement plants located worldwide, was created. The results show that the Sr isotope ratios of OPCs are higher than those of seawater
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Early hydration studies of cementitious materials incorporating nanoalumina Adv. Cem. Res. (IF 2.0) Pub Date : 2023-07-10 Usha Sharma, Reetam Chaudhury, Lok Pratap Singh, Chi-Sun Poon
Concrete technologists use different types of additives such as fly ash, slag, natural pozzolans and nanomaterials toenhance concrete performance and durability. However, a detailed explanation of the early-age hydration process and microstructural modification of concrete in the presence of nanomaterials remains to be presented and extensive research is required for strategic modification of cementitious
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Phase evolution and burnability of cement raw meal Adv. Cem. Res. (IF 2.0) Pub Date : 2023-07-04 José Aguirre Castillo, Markus Broström, Matias Eriksson
The use of high-temperature X-ray diffraction (HT-XRD) to study the mass transfer of raw meal constituents towards forming clinker phases and the occurrence of free lime (calcium oxide), also known as burnability, was assessed. A measuring strategy with temperature ranging from 1000°C to 1450°C was developed and compared with a conventional burnability method. The free lime determined by the methods
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Effect of recycled oyster shell powder on hydration and strength development of magnesium phosphate cement Adv. Cem. Res. (IF 2.0) Pub Date : 2023-06-27 Bingcong Chen, Junping Zhang, Airong Liu, Liwen Zhang, Zhujian Xie, Xiaowei Ouyang, Zhongguo John Ma
Using oyster shell powder (OSP) to prepare magnesium phosphate cement (MPC) not only reduces the pollution caused by the wasted oyster shell disposal, but also benefits the development of more environmentally friendly cement. The effect of OSP on the hydration and strength development of MPC was studied. An axial compression experiment including 45 cuboid specimens was executed to investigate the compressive
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Internal corrosion cracks evolution in reinforced magnesium oxychloride cement concrete Adv. Cem. Res. (IF 2.0) Pub Date : 2023-06-16 Penghui Wang, Hongxia Qiao, Qiong Feng, Cuizhen Xue
In view of the difficulty of identifying internal micro corrosion-induced cracks in concrete and the poor accuracy of quantitative analysis, which results in inaccurate results regarding the law of formation of internal cracks, reinforced magnesium oxychloride cement concrete (RMOCC) was subjected to a galvanostatic acceleration test, and X-CT technology was combined with the support vector machines
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Molecular dynamics study on the adsorption of radioactive ions by geopolymers Adv. Cem. Res. (IF 2.0) Pub Date : 2023-06-19 Yongming Tu, Tongfang Wang, Rongjia Wen, Jie Cao, Mengxiang Fang, Chao Wang, Gabriel Sas, Lennart Elfgren
The construction of nuclear power plants necessitates careful consideration of the discharge and fixation of nuclear waste. Geopolymers are new cement-based materials (CBMs) with three-dimensional cage-like structures that enable effective nuclear waste fixation. In this work, the adsorption of radioactive caesium and strontium ions by sodium aluminosilicate hydrate (NASH) gel, the main component of
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Effect of phosphate ester grinding aids on cement grinding and water-reducing performance Adv. Cem. Res. (IF 2.0) Pub Date : 2023-06-06 Lin Hu, Fan Yang, Yijia Huang, Kaixuan Yang, Binbin Li
Phosphate ester polymers were prepared from phosphate ester monomers for the first time and their effects as cement grinding aids and water-reducing performance were studied. Fourier-transform infrared (FTIR) spectroscopy and tests for standard viscosity, setting time, mortar fluidity, mortar compressive strength were conducted. The results showed that hydroxyethyl dibutyl phosphate reduced the residues
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Cryogenic cooling using liquid nitrogen to produce massive concrete: temperature, setting time and compressive strength Adv. Cem. Res. (IF 2.0) Pub Date : 2023-06-05 Malik I. Alamayreh, Rana A. M. Alhorani, Subhi M. Bazlamit
Mixing cement with water in mass concrete production is associated with hydration heat generation, which may cause concrete mixes to dry out and crack. The experimental work aims to evaluate the effects of using liquid nitrogen (LN) in cooling mortar mixes and concrete. LN was used in doses of 0, 25, 50, 75 and 100% by water volume to either cool the mixing water at T = 4°C or to inject it into concrete
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Enhancement of geopolymerisation reactivity and thermal resistance using mixed types of fly ash Adv. Cem. Res. (IF 2.0) Pub Date : 2023-06-05 Viengsai Phavongkham, Suthee Wattanasiriwech, Darunee Wattanasiriwech
Geopolymers prepared with class C fly ash (FA) often suffer from a flash geopolymerisation rate, making it difficult to work. Class F FA, however, may have low reactivity, so an admixture must be added to solve this problem. This research highlighted the use of mixed class C and class F FA as a precursor for geopolymer preparation to alleviate such problems. Optimisation of the precursor recipe and
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Investigation on water resistance of basic magnesium sulfate cement containing weak organic acids Adv. Cem. Res. (IF 2.0) Pub Date : 2023-05-30 Xun Xu, Bei Zhu, Tiancheng Lin, Yingjiang Li, Yongtao Sun, Bo Yu, Hailong Hu, Zongyue Hu, Qian Dong
Magnesium oxysulfate cement has low strength and poor water resistance, so an additive is essential for the preparation of basic magnesium sulfate cement (BMSC). In this paper, the effects and the mechanisms of three organic weak acids on the water resistance in relation to flexural strength of BMSC are investigated. The results show that malic acid fails to ameliorate the water resistance in relation
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Rheology of cement–sodium silicate grout containing bentonite and cellulose ether at high temperatures Adv. Cem. Res. (IF 2.0) Pub Date : 2023-05-24 Rentai Liu, Xiuhao Li, Shucai Li, Chunyu Zhang, Mengjun Chen, Canxun Du, Sanlin Du
Cement–sodium silicate grout (CSG) is widely used to control water inrush disasters, and its apparent viscosity considerably impacts its water-plugging effect. However, traditional grouting materials and methods are inappropriate for high-temperature environments as high temperatures can affect the grout's viscosity. To thicken grout and increase its apparent viscosity, viscosity-modifying admixtures
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Utilising under-burnt waste bricks from kilns as supplementary cementitious material Adv. Cem. Res. (IF 2.0) Pub Date : 2023-05-19 Mani Mohan, Birendra Kumar Singh
The pozzolanic performance of crushed brick powder (CBP), obtained by grinding under-burnt waste bricks from a continuous brick kiln, is studied. Two size fractions of CBP considered for cement replacement are CBP1 (passes through 150 μm but is retained on 75 μm) and CBP2 (passes through 75 μm). Compressive strength tests on mortar with CBP reveal that strength does not exceed that of the control;
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Analysis of the relationship between the L-box test and the yield stress of fresh concrete: an analytical approach Adv. Cem. Res. (IF 2.0) Pub Date : 2023-05-19 Raoudha Sassi, Ahmed Jelidi, Sami Montassar
The objective of this work was to study fresh concrete flow in the L-box test, predict the final deposit shape after flow stoppage and estimate the yield stress. This is very useful for controlling concrete casting in real structures, detecting problems and developing solutions on time. Concrete rheometers used for measuring the rheological parameters of concrete are expensive, not always available
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Time-dependent viscous behaviour of shear-thinning/shear-thickening cement pastes Adv. Cem. Res. (IF 2.0) Pub Date : 2023-05-17 Francisco José Rubio-Hernández, Luis Fernando Naranjo-Herrera, Nicolás Marcelo Páez-Flor, José Francisco Velázquez-Navarro
According to what is extensively and logically assumed, a better anti-thixotropic behaviour than thixotropy was expected for shear-thickening cement pastes. However, the shear-thickening Portland and volcanic cement pastes studied here showed apparent thixotropic behaviour when step-up tests were performed. This unexpected result was tentatively justified assuming that, just at the beginning of the
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AFt/AFm distribution and microstructural properties of thermally cured concretes containing rice husk ash Adv. Cem. Res. (IF 2.0) Pub Date : 2023-05-09 Nicole Pagan Hasparyk, Sandro Marden Torres, Francieli Tiecher, Guilherme Amantino, Wesley Maciel de Souza
The behaviour of concretes with and without rice husk ash was experimentally investigated with respect to the susceptibility to delayed ettringite formation. Concrete specimens have previously undergone a specific initial thermal curing up to 85°C, which was designed to trigger delayed ettringite formation. Specimens were subsequently exposed to a specific exposure environment by water immersion at
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Features of immittance spectra as performance indicators for cement-based concretes Adv. Cem. Res. (IF 2.0) Pub Date : 2023-04-11 W. John McCarter, Benny Suryanto, Hussameldin Taha Abdalgadir, Gerry Starrs, Jaehwan Kim
Design for durability and performance-based standards and specifications for reinforced concrete infrastructure is limited by the lack of rapid, science-based test methods for characterising the deterioration resistance of concrete. In this paper, this issue is addressed though the application of two-point electrical impedance measurements taken within the frequency range 100 Hz–10 MHz. Data are presented
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Production and evaluation of alkali-activated binders of low-calcium fly ash with slag replacement Adv. Cem. Res. (IF 2.0) Pub Date : 2023-03-31 K. Chiranjeevi Reddy, Kolluru V. L. Subramaniam
Formulating alkali-activated binders requires a clear understanding of the role of activator concentration and source material composition on product formation and strength gain. Alkali activation of a low-calcium fly ash (FA) binder with slag replacements at 30% and 50% by mass was evaluated. The reactivity and compressive strength gain of the activated binders were evaluated using activating solutions
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Expansion of concrete by secondary ettringite formation due to fine recycled aggregates contaminated with gypsum Adv. Cem. Res. (IF 2.0) Pub Date : 2023-03-09 Charlotte Colman, David Bulteel, Bouarroudj Mohamed Elkarim, Sébastien Rémond, Luc Courard
Recycled aggregates, especially the fine (0–4 mm) fraction, are often contaminated with sulfates coming from gypsum residues on demolition sites. When these aggregates are used in concrete, the sulfates can induce internal sulfate attack which causes expansion of the concrete. European standard EN 206:2013 sets the water-soluble sulfate limit at 0.2% by weight of the aggregate, but other studies suggest
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Preparation of sustained-release-type citric-acid-intercalated hydrotalcite and its application in oil-well cement Adv. Cem. Res. (IF 2.0) Pub Date : 2023-02-28 Tianpeng Zuo, Sheng Huang, Chunmei Zhang, Tao Gu, Kaiqiang Liu, Xiaowei Cheng
To address the problems of poor thermal stability and over-retarding of cement slurry by retarders, as well as the sensitivity to citric acid (CA) dosage and poor early strength of cement treated with hydroxycarboxylic acid retarders, CA-intercalated magnesium aluminium hydrotalcite (Mg/Al-CA-LDH, henceforth called CAIH) with a sustained-release effect was prepared by an anion exchange reaction between