聚合物对水泥基建筑密封砂浆性能的影响

采用自行设计的方法研究了可再分散乳胶粉、纤维素醚和淀粉醚对建筑密封砂浆工作性能、抗流挂性能及力学性能的影响.结果表明：掺加乳胶粉后，密封砂浆挤出时间明显减少，但抗流挂性能降低；掺入纤维素醚后，密封砂浆抗流挂性能得到显著改善，但挤出时间增加，强度明显降低；淀粉醚与乳胶粉及纤维素醚配合使用有利于改善密封砂浆的挤出性能和抗流挂性能，但强度有所降低.
The effects of redispersible emulsion powder, cellulose ether and starch ether on working performance, sag resistance and mechanical properties of building sealing mortar were studied by using the method designed by the authors. The results show that: after adding the emulsion powder to the sealing mortar, the extrusion time is remarkably reduced, but the sag resistance is reduced. After adding the cellulose ether to the sealing mortar, the sag resistance of the sealing mortar is significantly improved, but the extrusion time increases and the strength decreases obviously. The starch ether, emulsion powder and cellulose ether used in conjunction in the sealing mortar can lead to better extrusion performance and sag resistance of the sealing mortar, but the strength decreases