乳胶改性的碳纤维增强砂浆  

Latex-modified Carbon Fiber Reinforced Mortar

作　　者：许贤敏[1] 胡玉强[2] 

机构地区：[1]河北大地土木工程有限公司,050081 [2]北方绿野建筑设计有限公司,050000

出　　处：《特种结构》2009年第3期97-103,共7页Special Structures

摘　　要：本文介绍了乳胶改性对含有硅灰的碳纤维增强砂浆之性能特征的影响。在国外的研究中使用了两种苯乙烯-丁二烯乳胶。据观测,乳胶改性提高了胶结料与碳纤维的粘结力。乳胶改性的纤维水泥复合物同未改性者相比较,其吸水率和干缩率均降低了,而弯曲延性则提高了。乳胶改性的碳纤维增强砂浆具有较高的抗冻性,而且在耐酸性方面有明显提高。Effects of latex modification on pe（formance characteristic of carbon fiber reinforced mortars incorporating silica fume were introduced. Two styrene-butadiene latex were considered in this investigation abroad. Latex modification was observed to enhance the bonding of cementitious matrixes to carbon fibers. Latex-modified fibrous cement composites, when compared with the unmodified ones, also had reduced water absorption and drying shrinkage and increased flexural toughness, latex modification of carbon fiber reinforced mortar led to higher frost resistance and significantly improved resistance to acid attack.

关 键 词：乳胶改性 碳纤维增强砂浆 苯乙烯-丁二烯乳胶 弯曲延性 

分 类 号：TU578.1[建筑科学—建筑技术科学]