高效减水剂缓凝剂耦合体系对混凝土碳化性能的影响  

Influence of coupling system with superplasticizer and retarding agent on concrete capacity of carbonation resistance

作　　者：史琛[1,2] 王振军[1,3] 何廷树[1,2] 

机构地区：[1]西安建筑科技大学西部建筑科技国家重点实验室培育基地,陕西西安710055 [2]西安建筑科技大学材料科学与工程学院,陕西西安710055 [3]长安大学材料科学与工程学院,陕西西安710064

出　　处：《混凝土》2009年第5期98-99,102,共3页Concrete

基　　金：西部建筑科技国家重点实验室(筹)开放基金(08KF09)

摘　　要：采用碳化试验,研究了同水灰比和同坍落度条件下单掺氨基磺酸盐系高效减水剂(A)、氨基磺酸盐系高效减水剂和三聚磷酸钠(S)以及氨基磺酸盐系高效减水剂和葡萄糖酸钠(P)复合对混凝土碳化性能的影响。结果表明:掺入A-P的混凝土早期碳化速度最快,但后期增长慢,掺入A-S的混凝土的早期碳化速度慢,但后期增长最快;单掺A的早期碳化速度大于A-S的,但后期增长较慢。Based on the two different test conditions with same water-cement ratio and same slump constant, the carbonization experiment was adopted to study concrete capacity of carbonation resistance with different chemical admixture of aminosulfonic acid based superplasticizer（A）, A and trimeric sodium phosphate （ S ）, A and sodium gluconate （ P ）.The results show that the carbonation depth of the concrete which with A-P is the deepest in the early stage,but it grows slowly in the later stage.The carbonation depth of concrete with A-S grows slowly in the early stage,but it grows fast in the later stage.The carbonation depth of concrete with A is deeper than that of concrete with A-S ,but it increases slowly later.

关 键 词：混凝土 氨基磺酸盐系高效减水剂 缓凝剂 碳化 

分 类 号：TU528.042[建筑科学—建筑技术科学]