夏国辉1,毛永琳1,张建纲1,周栋梁1,杨 勇1,王 涛2
夏国辉,毛永琳,张建纲, 等.聚丙烯酰胺对水泥浆体流动度的影响机理研究[J].混凝土与水泥制品,2023(7):35-38.
XIA G H,MAO Y L,ZHANG J G,et al.Study on influence mechanism of polyacrylamide on fluidity of cement Paste[J].China Concrete and Cement Products,2023(7):35-38.
聚丙烯酰胺对水泥浆体流动度的影响机理研究
夏国辉1,毛永琳1,张建纲1,周栋梁1,杨 勇1,王 涛2
夏国辉,毛永琳,张建纲, 等.聚丙烯酰胺对水泥浆体流动度的影响机理研究[J].混凝土与水泥制品,2023(7):35-38.
XIA G H,MAO Y L,ZHANG J G,et al.Study on influence mechanism of polyacrylamide on fluidity of cement Paste[J].China Concrete and Cement Products,2023(7):35-38.
摘 要:研究了聚丙烯酰胺(PAM)对水泥浆体流动度的影响规律,测试了水泥颗粒的粒径分布、水泥浆体的流变参数和水泥颗粒对减水剂的吸附率,分析了PAM影响机理。结果表明:微量的PAM可使水泥浆体的流动度显著下降;PAM促进了水泥浆体絮凝、提升了水泥浆体的黏度是造成水泥浆体流动度不良的主要原因。
Abstract: The influence of polyacrylamide(PAM) on the fluidity of cement paste was studied. The particle size distribution of cement particles, rheological parameters of cement paste and the adsorption rate of cement particles on water reducer were tested to analyze the influence mechanism of PAM. The results show that small amount of PAM can significantly reduce the fluidity of cement paste. PAM promotes the flocculation of cement paste and improves the viscosity of cement paste, which is the main reason for poor fluidity of cement paste.
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