【摘要】 为研究改进的高性能聚合物水泥砂浆（PCM）工作性能，将不同掺量的S105矿粉、微珠、纤维素醚、淀粉醚、有无减水剂和聚乙烯醇对改进的高性能PCM的抗压、抗折强度和流动度影响进行对比，设计了18组不同配合比的160 mm×40 mm×40 mm试块，测定其3、7、28 d的抗压、抗折强度和流动度。结果表明，在S105矿粉与微珠总量不变的基础上，随着矿粉掺量的减少，微珠掺量的增加，改进的高性能PCM的抗压、抗折强度和流动度增大；随着纤维素醚和淀粉醚掺量的增加，改进的高性能PCM的抗压、抗折强度增大，流动度减小；加入减水剂，使改进的高性能PCM的抗压、抗折强度和流动度增大；适量聚乙烯醇掺量的增加，使改进的高性能PCM的抗压、抗折强度增大；当聚乙烯醇掺量超过S105矿粉掺量的14%时，掺量增加使改进的高性能PCM的抗压、抗折强度减小；聚乙烯醇掺量的增加，使改进的高性能PCM的流动度减小。更多还原

【Abstract】 In order to study the working performance of improved high-performance polymer cement mortar(PCM),compare the effects of different content of S105 mineral powder,microbeads,cellulose ether,starch ether,water reducing agent and polyvinyl alcohol on the compression,flexural strength and fluidity of the improved high-performance PCM,and 18 sets of 160 mm×40 mm×40 mm test blocks with different mix ratios were designed,and their compression,flexural strength and fluidity were measured for 3,7 and 28 days.The results show that,on the basis of the same total amount of S105 mineral powder and microbeads,as the content of mineral powder decreases and the content of microbeads increases,the compressive,flexural strength and fluidity of the improved high-performance PCM increase.As the content of cellulose ether and starch ether increases,the compressive and flexural strength of the improved high-performance PCM increases,and the fluidity decreases.Add water reducing agent to increase the compression,flexural strength and fluidity of the improved high-performance PCM.The increase of the proper amount of polyvinyl alcohol increases the compressive and flexural strength of the improved high-performance PCM.When the polyvinyl alcohol content exceeds 14% of the S105 mineral powder content,the increase in the content will reduce the compressive and flexural strength of the improved high-performance PCM.The increase of polyvinyl alcohol content reduces the fluidity of the improved high-performance PCM.更多还原