当前位置: X-MOL 学术Cement Concrete Comp. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A review on corrosion of cement-based materials in CO2-rich karst groundwater
Cement and Concrete Composites ( IF 10.5 ) Pub Date : 2023-11-28 , DOI: 10.1016/j.cemconcomp.2023.105376
Shuqing Zhang , Jianhui Liu , Leping Liu , Zheng Chen , Caijun Shi

In karst areas, groundwater has high concentrations of carbon dioxide. It causes decalcification of cement-based materials by reacting with calcium hydroxide and calcium silicate hydrate. Therefore, the corrosion by CO2-rich groundwater has become a significant concern as it may reduce the service life of concrete structure. Based on the chemical reactions, the corrosion can be divided into leaching corrosion, carbonic acid corrosion, and acid corrosion. Calcium carbonate formation and dissolution are critical steps in corrosion process. The loss of calcium from cement results in cracking and spalling of the cement-based materials. The environmental and material factors had a significant effect on the corrosion rate. Based on the study in simulated karst water, adding supplementary cementitious materials or low-calcium alkali-activated materials can improve the corrosion resistance of the cementitious materials.



中文翻译:

富含CO2岩溶地下水中水泥基材料腐蚀研究进展

在喀斯特地区,地下水中二氧化碳浓度很高。它通过与氢氧化钙和水合硅酸钙反应导致水泥基材料脱钙。因此,富含CO 2地下水的腐蚀已成为一个重要问题,因为它可能会降低混凝土结构的使用寿命。根据化学反应,腐蚀可分为浸出腐蚀、碳酸腐蚀和酸腐蚀。碳酸钙的形成和溶解是腐蚀过程中的关键步骤。水泥中钙的损失导致水泥基材料的开裂和剥落。环境和材料因素对腐蚀速率有显着影响。根据模拟岩溶水的研究,添加辅助胶凝材料或低钙碱激活材料可以提高胶凝材料的耐腐蚀性能。

更新日期:2023-12-01
down
wechat
bug