喀斯特地区水下混凝土抗硫酸盐侵蚀技术研究  

Research on the Anti Sulfate Corrosion Technology of Underwater Concrete in Karst Areas

作　　者：麻安平 Anping Ma(China Railway 20th Bureau Group Real Estate Development Co.,Ltd.,Chongqing 400000)

机构地区：[1]中铁二十局集团房地产开发有限公司,重庆400000

出　　处：《新疆钢铁》2025年第1期208-210,共3页Xinjiang Iron and Steel

摘　　要：喀斯特地区的地下水丰富,但水质中总硬度大、碱度小,有的地区含有丰富的硫酸根离子,给混凝土结构的建设带来了一定的影响。为解决此问题,本文研究了以下几个方面:首先,分析了喀斯特地区地下水化学特性对混凝土耐硫酸盐腐蚀性的影响;其次,采用改性材料掺加法、表面防护法等技术,对喀斯特地区的水下混凝土做了硫酸盐侵蚀实验研究;最后,研究和分析了防止喀斯特地区水下混凝土受硫酸盐侵蚀的关键技术。结果表明,通过在混凝土中掺加适量的硅酸盐材料,可以显著提高混凝土的抗硫酸盐侵蚀性能,并且提出了水下混凝土耐硫酸盐腐蚀的技术路线,对于喀斯特地区水下混凝土抗硫酸盐侵蚀问题有着重要的理论和实践意义。The groundwater in karst areas is abundant,but the total hardness and alkalinity of the water quality are high.Some areas contain abundant sulfate ions,which have a certain impact on the construction of concrete structures.To solve this problem,this article studied the following aspects:firstly,the influence of groundwater chemical characteristics in karst areas on the sulfate corrosion resistance of concrete was analyzed;Secondly,sulfate erosion experiments were conducted on underwater concrete in karst areas using techniques such as modified material addition and surface protection;Finally,key technologies for preventing sulfate attack on underwater concrete in karst areas were studied and analyzed.The results show that adding an appropriate amount of silicate materials to concrete can significantly improve its resistance to sulfate corrosion,and a technical route for the resistance of underwater concrete to sulfate corrosion has been proposed,which has important theoretical and practical significance for the resistance of underwater concrete to sulfate corrosion in karst areas.

关 键 词：喀斯特地区 混凝土 硫酸盐侵蚀 抗硫酸盐技术 改性材料掺加法 

分 类 号：TU528.2[建筑科学—建筑技术科学]