| 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. DOI: 10.1007/s11595-005-2337-y |
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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： | 2005-03-12 |
| 修稿时间： | 2005-03-122006-07-23 |
Chemical structures and adsorptive behaviors of superplasticizers on β-C2S |
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| Wang Ziming,Zhao Junfeng,Cui Suping. Chemical structures and adsorptive behaviors of superplasticizers on β-C2S[J]. Journal of Wuhan University of Technology. Materials Science Edition, 2007, 22(2): 337-340. DOI: 10.1007/s11595-005-2337-y |
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| Authors: | Wang Ziming Zhao Junfeng Cui Suping |
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| Affiliation: | College of Material Science and Engineering, Beijing University of Technology, Beijing 100022, China |
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| Abstract: | 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. Funded by the National Research Project(“973”) Program No. 2001CB610700) |
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| Keywords: | β -dicalcium silicate superplasticizer adsorption ζ -potential PCE |
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