水性环氧树脂改性水泥砂浆力学性能及微观结构

发布时间：2018-10-11 08:43

【摘要】：通过对水泥砂浆中掺加水性环氧树脂,制备了水性环氧树脂改性水泥砂浆,研究了不同聚灰比下,水性环氧树脂对水泥砂浆水化和强度的影响。运用XRD、TG/DSC、SEM、FTIR微观测试手段,研究了水性环氧树脂对水泥砂浆水化产物的影响。研究结果表明:水性环氧树脂可形成聚合物膜会延迟水泥水化;水性环氧树脂的加入会降低水泥砂浆的抗压强度;当聚灰比在2%范围以内,水性环氧树脂可以提高水泥砂浆的抗折强度。
[Abstract]:The waterborne epoxy resin modified cement mortar was prepared by adding waterborne epoxy resin into cement mortar. The effect of waterborne epoxy resin on the hydration and strength of cement mortar was studied. The effect of waterborne epoxy resin on hydration products of cement mortar was studied by XRD,TG/DSC,SEM,FTIR. The results show that the formation of polymer film can delay the hydration of cement, the addition of waterborne epoxy resin reduces the compressive strength of cement mortar, and when the ratio of polymer to cement is within 2%, Waterborne epoxy resin can improve the flexural strength of cement mortar.
【作者单位】：武汉理工大学材料科学与工程学院;武汉理工大学硅酸盐建筑材料国家重点实验室;武汉理工大学建筑设计研究院;
【基金】：国家自然科学基金(51672199)
【分类号】：TQ177.62

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