利用脱硫石膏浆液制备高强水泥基自流平砂浆的应用研究  

Rescarch on Application of Preparation of High Strength Cement-based Self-leveling Mortar with Desulfurization Gypsum Slurry

作　　者：徐风广[1] 杨凤玲[1] 侯海军[1] 陈小卫 XU Feng-guang;YANG Feng-ling;HOU Hai-jun;CHEN Xiao-wei(School of Materials Science and Engineering,Yancheng Institute of Technology,Yancheng 224051,China)

机构地区：[1]盐城工学院材料科学与工程学院,江苏盐城224051

出　　处：《混凝土与水泥制品》2021年第11期85-89,共5页China Concrete and Cement Products

基　　金：江苏省生态建材与环保装备协同创新中心项目(CP201506)。

摘　　要：以铝酸盐水泥为主要胶凝材料,掺入脱硫石膏浆液和普通硅酸盐水泥,制备了地面用水泥基自流平砂浆,通过宏观性能测试(强度、耐磨性和尺寸变化率)和XRD分析,研究了脱硫石膏浆液对水泥基自流平砂浆性能的影响。结果表明:当铝酸盐水泥掺量为30.3%~36.9%、脱硫石膏浆液掺量为18%~28%、普通硅酸盐水泥掺量为5.3%~6.0%、河砂掺量为35%~39%时,制备的水泥基自流平砂浆具有强度高、耐磨性好和收缩率低的特点;脱硫石膏浆液能促进基体中早期AFt的生成,保证后期AFt的生成量,从而提高脱硫石膏浆液水泥基自流平砂浆的强度。The cement-based self-leveling mortar for ground was prepared by using aluminate cement as main cementitious material,adding desulfurization gypsum slurry and ordinary portland cement.The influence of desulfurization gypsum slurry on the properties of cement-based self-leveling mortar was studied by macro performance tests(strength,wear resistance and dimensional change rate)and XRD analysis.The results show that the cement-based self-leveling mortar has the characteristics of high strength,good wear resistance and low shrinkage when the content of aluminate cement is 30.3%~36.9%,the content of desulfurization gypsum slurry is 18%~28%,the content of ordinary portland cement is 5.3%~6.0%,and the content of river sand is 35%~39%.The desulfurized gypsum slurry can promote the formation of early AFt in the matrix and ensure the generation of AFt in the later period,thereby improving the strength of the cement-based self-leveling mortar of the desulfurized gypsum slurry.

关 键 词：石灰石-石膏湿法脱硫工艺 脱硫石膏浆液 自流平砂浆 强度 耐磨性 收缩率 

分 类 号：TU528.04[建筑科学—建筑技术科学]