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原材料对水泥基高流态砂浆性能的影响研究
作者：周聪聪1，郑宝春2，祝志雄1，蔡奖权3，应晓猛1，俞毅1，胡名卫1，武海1
（1.浙江省建筑材料科学研究所有限公司，浙江 杭州 311000；2.金华市城建混凝土有限公司，浙江 金华 321000；
3. 浙江中能工程检测有限公司，浙江 杭州 311000）
摘要：主要研究了砂的种类、细度、用量，重钙粉用量及减水剂掺量对高流态砂浆流动性和力学性能的影响。结果表明，砂的种类和细度对高流态砂浆的流动性和强度影响较大；在相近的流动状态下，砂用量越大，用水量越小，7 d抗压强度先提高后降低，当砂用量为54.1%时，7 d抗压强度最高；随重钙粉用量增大，砂浆的流动性先增加后趋于平缓，7 d抗压强度先提高后降低，重钙粉的最佳用量为14%左右；减水剂掺量为0.3%时，砂浆的流动性最佳。
关键词：砂浆；高流态；流动性能；力学性能
中图分类号：TU528.53 文献标识码：A 文章编号：1001-702X（2019）11-0112-03
Study on the influence of raw materials on the performance of cement-based high fluid mortar
ZHOU Congcong1，ZHENG Baochun2，ZHU Zhixiong1，CAI Jiangquan3，YING Xiaomeng1，YU Yi1，HU Mingwei1，WU Hai1
（1.Zhejiang Institute of Building Materials Science Co. Ltd.，Hangzhou 311000，China；
2.Jinhua City Construction Concrete Co. Ltd.，Jinhua 321000，China；
3.Zhejiang Zhongneng Engineering Testing Co. Ltd.，Hangzhou 311000，China）
Abstract：In this paper，the effects of sand fineness and types，sand content，heavy calcium powder content and chemical additives（water reducer） content on the performance and mechanical properties of high flow mortar were studied. The results show that the fineness and types of sand have a great influence on the fluidity and strength of high-fluid mortar；under similar flow conditions，the larger the amount of sand added，the smaller the water consumption，the first increase and then decrease the 7 d strength；when the amount of sand added is 54.1%，the 7 d strength is the largest；and when the amount of heavy calcium powder is larger，the fluidity of mortar increases first and then tends to be flat. Slow，7 d strength increases first and then decreases，the optimum content of heavy calcium powder is about 14%，when the content of water reducer is 0.3%，the flow state of mortar is the best.
Key words：mortar，high flow state，fluidity，mechanical properties