Chemieal Strueturcs and Adsorptive Behaviors of Superplastieizers on β-C2S |
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引用本文: | 王子明.Chemieal Strueturcs and Adsorptive Behaviors of Superplastieizers on β-C2S[J].武汉理工大学学报(材料科学英文版),2007,22(2):337-340. |
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作者姓名: | 王子明 |
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作者单位: | College of Material Science and Engineering, Beijing University of Technology, Beijing 100022, China |
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基金项目: | Funded by the National Research Project(“973”) Program (No. 2001CB610700) |
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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 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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关 键 词: | 超塑化剂 β-C2S 化学结构 吸附行为 高性能混凝土 |
收稿时间: | 12 March 2005 |
修稿时间: | 2005-03-122006-07-23 |
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