聚合物改性砂浆收缩性能测试方法探讨

Exploration of testing methods for shrinkage performance of polymer modified mortar

通过研究用水量及胶粉掺量对聚合物水泥砂浆不同规格试件收缩值变化规律,同时,分析不同规格尺寸对聚合物水泥砂浆收缩值影响规律。结果显示:聚合物水泥砂浆收缩值初期快速增加,后期增加缓慢;不同规格收缩试件对用水量及胶粉掺量变化的敏感度不同;10 mm×50 mm×1000 mm试件比较特殊之外,40 mm×40 mm×160 mm试件收缩值最大。

By studying the effect of water consumption and adhesive powder content on the shrinkage value of polymer cement mortar specimens of different specifications,and analyzing the influence of specification size on the shrinkage value of polymer cement mortar,the results show that the shrinkage value of polymer cement mortar increases rapidly in the initial stage and slowly in the later stage.The sensitivity of shrinkage specimens of different specifications to changes in water consumption and rubber powder content varies;Except for the special 10 mm×50 mm×1000 mm specimen,the 40 mm×40 mm×160 mm specimen has the highest shrinkage value.