【摘 要】
：
The chemical structures of four types of superplasticizers (SPs) and their adsorptive behaviors on β-C2S were investigated. The adsorption properties of SPs on
【机 构】
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College of Material Science and Engineering
【出 处】
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武汉理工大学学报（材料科学版）（英文版）
【基金项目】
：
国家重点基础研究发展计划(973计划)
论文部分内容阅读
The chemical structures of four types of superplasticizers (SPs) and their adsorptive behaviors on β-C2S were investigated. The adsorption properties of SPs on β-C2S were measured and the relationship between the adsorption quantity and the specific surface of β-C2S was analyzed. The experimental results show that the adsorption quantity increases with the surface area increase of β-C2S, but the adsorption quantity per surface area is similar, which means that the main adsorbent is β-C2S itself. Polycarboxylic ester (PCE) showed the highest adsorption amount on β-C2S, followed by β-naphthalene sulfonates (NSF) and formaldehyde-acetone condensates sulfonates (FAS), amino sulphonate (AS) showed the least adsorption amount on β-C2S. PCE affected the surface potential of β-C2S particles in water differently in comparison with other types of SPs. The adsorption capacity of SPs on β-C2S is determined by factors such as molecular structure, functional groups and molecular weight of SPs.
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