含泥量对掺聚羧酸减水剂混凝土性能的影响  

Influence of Clay Content on the Properties of Concrete with Polycarboxylic Superplasticizer

作　　者：刘斌[1] 何廷树[1] 何娟[1] 史琛[1] 

机构地区：[1]西安建筑科技大学材料与矿资学院,西安710055

出　　处：《硅酸盐通报》2015年第2期349-353,共5页Bulletin of the Chinese Ceramic Society

基　　金：陕西省自然科学基金资助项目(2013JQ6015);西安建筑科技大学人才科技基金(RC1423)

摘　　要：将砂中水洗出来的泥掺入低、中、高强度等级混凝土(C25、C40、C70)中,研究不同含泥量对掺聚羧酸减水剂混凝土拌合物的工作性及混凝土强度、抗氯离子渗透性能与抗碳化性能的影响。结果表明:随含泥量的增加,混凝土拌合物工作性逐渐变差;混凝土抗压强度降低,对C40和C70等级混凝土抗压强度影响显著;三种强度等级混凝土抗氯离子渗透性能均显著下降;C25和C40等级混凝土抗碳化性能明显下降,而C70混凝土抗碳化性能影响不大。The clay from sand after washing was added to the low,medium and high strength concrete（ C25、C40、C70）,to study the influence of the polycarboxylate superplasticizer concrete capacity of workability,compressive strength,chloride ion penetration and carbonation resistance by adding different clay content. The results show that with the clay content increasing,the workability of concrete mixture got worse. The compressive strength of concrete decreased,the influence of clay on compressive strength of C40 and C70 concrete were significant. The three kinds of concrete chloride ion permeability decreased significantly. The carbonation resistance of C25 and C40 concrete were obviously decreased,but C70 concrete had little effect.

关 键 词：含泥量 聚羧酸减水剂 混凝土 抗氯离子渗透 抗碳化性能 

分 类 号：TU528[建筑科学—建筑技术科学]