硅灰和稻壳灰对竹浆纤维水泥基复合材料抗劣化性能的影响  

Effect of Silica Fume and Rice Husk Ash on Deterioration Resistance of Bamboo Fiber Reinforced Cement-based Composites

作　　者：王清梦 谢晓丽[1] 高健 郑坤毅 WANG Qing-meng;XIE Xiao-li;GAO Jian;ZHENG Kun-yi(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学材料与化学学院,四川绵阳621010

出　　处：《混凝土与水泥制品》2023年第1期50-55,共6页China Concrete and Cement Products

基　　金：国家自然科学基金项目(51808465)。

摘　　要：以硅灰和稻壳灰作为掺合料(固定总掺量为40%)、竹浆纤维作为增强材,采用抄取法制备了纤维增强水泥基复合材料,并研究了干湿循环和热水浸泡老化试验下,不同硅灰和稻壳灰掺入比例对竹浆纤维水泥基复合材料力学性能的影响。结果表明:不同掺入比例的硅灰和稻壳灰均有效提高了竹浆纤维水泥基复合材料在干湿循环和热水浸泡老化下的抗弯强度和断裂韧性,其中,单掺40%硅灰的提高效果最好。With silica fume and rice husk ash as the admixture(the total content was 40%)and bamboo fiber as the reinforcement,the fiber reinforced cement-based composites were prepared by the slurry vacuum de-watering technique.The effects of different silica fume and rice husk ash proportions on the mechanical properties of bamboo fiber reinforced cement-based composites under the dry wet cycle and hot water immersion aging tests were studied.The results show that the bending strength and fracture toughness of bamboo fiber reinforced cement-based composites under dry wet cycle and hot water immersion aging are effectively improved by adding silica fume and rice husk ash of different proportions,and the single addition of 40%silica fume has the best effect.

关 键 词：水泥基复合材料 竹浆纤维 硅灰 稻壳灰 抗弯强度 断裂韧性 抗劣化性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]