聚羧酸盐减水剂与水泥的吸附性能研究  

Study on adsorption performance of polycarboxylate superplasticizer and cement

作　　者：赵婷婷[1] 王玲[1] 窦琳[1] 裴继凯 李军平 任建国[1] 王自为[1] 

机构地区：[1]山西大学化学化工学院,山西太原030006 [2]山西合盛邦砼建材有限公司,山西太原030006

出　　处：《新型建筑材料》2011年第1期57-59,共3页New Building Materials

摘　　要：采用凝胶色谱法研究了自制聚羧酸盐减水剂在水泥-水体系中的吸附情况。试验结果表明,其吸附等温线基本符合Langmuir等温方程。聚羧酸盐减水剂为梳状结构,吸附量较小,静电斥力效应较弱,其分散作用主要来自于吸附层空间位阻效应。Adsorption of polycarboxylate-based superplasticizer in cement-water system was studied by gel chromatography method. Testing results indicated that the adsorption behavior follows a Langmuir isothermal adsorption model. The structure of polycarboxylate superplasticizer is comb-like, so it has a saturated low adsorption amount and a weak electrostatic repulsive effect, and its dispersion mainly comes from steric effect generated by the adsorption layer.

关 键 词：聚羧酸盐减水剂 吸附 水泥 

分 类 号：TU528.042[建筑科学—建筑技术科学]