防腐阻锈剂对混凝土性能影响试验研究  

Experimental Study on Influences of Sulfate-resistant and Corrosion-inhibiting Admixtures on the Performance of Concrete

作　　者：陈蓓[1] 李响[2,3] 张兴师 

机构地区：[1]南京理工大学泰州科技学院,泰州225300 [2]内蒙古科技大学,包头014010 [3]安顺新型建材有限公司,包头014010 [4]中天建设集团第三建设公司,上海200235

出　　处：《硅酸盐通报》2017年第5期1790-1795,共6页Bulletin of the Chinese Ceramic Society

摘　　要：将防腐阻锈剂按照不同比例等量取代普硅水泥配制混凝土,研究其对混凝土抗压强度、抗硫酸盐侵蚀系数、氯离子渗透系数、腐蚀电量等性能指标的影响,并通过SEM扫描电镜观察混凝土3 d、7 d、28 d的水泥水化产物形貌。研究结果表明:掺入防腐阻锈剂后,混凝土的工作性能、后期力学性能、抗硫酸盐侵蚀性能、氯离子渗透性能、抗氯盐侵蚀性能明显优于基准混凝土;防腐阻锈剂的掺入消耗了水泥中的C_3A、水泥水化产生的Ca(OH)_2,生成钙矾石和C-S-H凝胶,产生微膨胀效应使混凝土结构更加致密,提高了抗硫酸盐、氯盐侵蚀性能。Different percentages of sulfate-resistant and corrosion-inhibiting admixtures take the place of Portland cement equivalently to compound concrete and study the influence of concrete compression strength, sulfate attack coefficient, chloride penetration coefficient, electric quantity and other index and observe morphology of cement hydration product of concrete 3 d, 7 d, 28 d by SEM. The results show that after infusion of sulfate-resistant and corrosion-inhibiting admixtures, working performance, later mechanics performance, sulfate corrosion resistance performance, chloride penetration performance, and chlorine salt corrosion resistance performance are superior to normal concrete obviously; infusion of sulfate-resistant and corrosion-inhibiting admixtures can consume C3A and Ca（OH）2 produced by cement hydration and generate ettringite and C-S-H gel and produce micro-expansion effect, which makes the structure more compact and improves the performance of sulfate and chlorine salt corrosion resistance.

关 键 词：防腐阻锈剂 混凝土 硫酸盐侵蚀 氯离子渗透 腐蚀电量 

分 类 号：TU528[建筑科学—建筑技术科学]