大双掺混凝土耐久性研究  

Research on the durability of the double mixture concrete and its application prospect

作　　者：赵考生 

机构地区：[1]天津水文水资源勘测管理中心,天津300061

出　　处：《水科学与工程技术》2016年第6期14-17,共4页Water Sciences and Engineering Technology

摘　　要：针对水工混凝土广泛存在的碱集料反应和有害介质侵蚀问题及华北地区非活性混凝土集料匮乏、开采困难、沿海地区地下水中硫酸盐、氯离子侵蚀较严重等问题,选用南水北调工程为切入点,开展了大双掺混凝土耐久性研究,并对在华北地区的应用前景进行了分析。通过研究,大双掺混凝土具有较强的抑制碱集料反应能力和较好的抵抗硫酸盐、氯离子侵蚀能力。明显提高了混凝土的耐久性,降低了工程造价,减少了水泥用量。在华北地区有较广阔的应用前景,具有很好的经济效益和环境效益。This paper focus on the widespread erosion problem of AAR and harmful medium in concrete and problems that lack of non active aggregate concrete and mining difficulties in North China and the serious erosion problem of sulphate and chloridion in groundwater of the coastal areas. Selection of South to North Water Diversion Project as the breakthrough point, to carry out the research on the durability of the double mixture concrete, and analyzed the application prospect in North China. Based on a large number of experimental researches and prospecting analysis. It is proved that double mixture concrete has the ability of inhibiting alkali aggregate reaction and good resistance to sulphate, chloridion erosion ability.Obviously it improves the durability of concrete, and reduces the cost of the project, reducing the amount of cement. It has a broad application prospect In North China, with good economic benefits and environmental benefits.

关 键 词：大双掺混凝土 碱集料反应 硫酸盐侵蚀 氯离子侵蚀 混凝土耐久性 

分 类 号：TV528[水利工程—水利水电工程]