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| 沸石减水保塑剂的特性与工程应用 | |
| 引用本文： | 冯乃谦,石云兴,牛全林.沸石减水保塑剂的特性与工程应用[J].混凝土与水泥制品,2009(2). |
| 作者姓名： | 冯乃谦 石云兴 牛全林 |
| 作者单位： | 1. 清华大学,北京,100084 2. 中建材料工程研究中心,北京,102600 3. 山东理工大学,淄博,255049 |
| 摘 要： | 以天然沸石超细粉吸附高效减水剂,制得沸石减水保塑剂.沸石减水保塑剂可用于普通混凝土、高性能混凝土及超高性能混凝土,使混凝土流动性增大,并能控制流动性的经时变化;这主要是由于在混凝土中它能缓慢被释出.从而维持水泥粒子对减水剂的吸附量,使水泥粒子表面具有较稳值的Zeta电位.使水泥浆常处于分散状态.在超高性能混凝土中,它还能降低新拌混凝土的粘度,便于泵送施工.沸石减水保塑剂掺入混凝土中还能改善硬化混凝土的结构,提高混凝土的强度. |
| 关 键 词： | 天然沸石 高效减水剂 工作度 扩展度 可泵性 |
Characteristics and Engineering Application of Zeolite Plastic-keeping Water Reducer |
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| FENG Nai-jian,SHI Yun-xing,NIU Quan-lin.Characteristics and Engineering Application of Zeolite Plastic-keeping Water Reducer[J].China Concrete and Cement Products,2009(2). | |
| Authors: | FENG Nai-jian SHI Yun-xing NIU Quan-lin |
| Abstract: | Absorption and desorption of superplasticizer by natural zeolite powder were investigated,and a zeolite plastic-keeping water reducer with natural zeolite powder as a carrier was produced. The addition of zeolite superplasticizer in concrete, the HPC and UHPC can increase their fluidity and slump, while the loss of fluidity and slump are effectively controlled. The causes are mainly that, the superplasticizer can be released gradually in the concrete from absorpted surface of zeolite, that will maintain the... |
| Keywords: | Natural zeolite powder Superplasticizer Workability Fluidity Pumpability |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |