玻璃纤维增强泡沫轻质混凝土力学性能的试验研究  

EXPERIMENTAL RESEARCH ON MECHANICAL PROPERTIES OF LIGHT-WEIGHT FOAMED CONCRETE WITH GLASS FIBER REINFORCEMENT

作　　者：赵文辉[1,2] 苏谦[1,2] 李婷[1,2] 黄俊杰[1,2] 冯浩[3] ZHAO Wenhui SU Qian LI Ting HUANG Junjie FENG Hao(School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China MOE Key Laboratory of High-Speed Railway Engineering,Southwest Jiaotong University, Chengdu 610031, China School of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, China)

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]西南交通大学高速铁路线路工程教育部重点实验室,成都610031 [3]福州大学材料科学与工程学院,福州350108

出　　处：《工业建筑》2017年第9期110-114,80,共6页Industrial Construction

基　　金：中国铁路总公司科技研究开发计划课题(2015G002-K);四川省科技计划项目(2016JY0005)

摘　　要：为研究玻璃纤维对泡沫轻质混凝土力学性能的影响,对浇筑密度为700 kg/m3的泡沫轻质混凝土掺加4组不同长度、不同含量的耐碱玻璃纤维后,开展压缩试验、劈裂抗拉试验、抗折强度试验(三点式),并对数据整理分析。研究结果表明:随着纤维含量的增加,4组纤维泡沫轻质混凝土的无侧限抗压强度、劈裂抗拉强度和抗折强度均呈现先增加后减小的现象;掺加玻璃纤维对泡沫轻质混凝土抗折强度提高效果最优,劈裂抗拉强度次之,无侧限抗压强度最弱;掺加纤维前后,泡沫轻质混凝土均表现为明显的脆性,但掺加纤维可明显增强泡沫轻质混凝土的韧性。玻璃纤维的掺加对抗折强度提高效果最优,劈裂抗拉强度次之,无侧限抗压强度最弱。In order to study the effects of alkali-resistant glass fiber on the mechnical properties of light-weight foamed concrete,compression tests,tensile splitting tests and flexural strength tests（ three-points） were carried out on the specimens with the wet density of 700 kg/m^3. And the specimens had four kinds of length and different fiber contents. After that,a large number of test data were analyzed. The results showed that for the four sets of lightweight foamed concrete,the unconfined compressive strength,the splitting tensile strength and the flexural strength first decreased and then increased with the increase of fiber content. After adding the glass fiber,the flexural strength of light-weight foamed concrete increased the most,the splitting tensile strength increased the second,and the unconfined compressive strength increased the least. Light-weight foamed concrete showed its brittleness both adding fiber and without fiber,but the toughness of lightweight foamed concrete could be improved obviously after adding fiber.

关 键 词：耐碱玻璃纤维 泡沫轻质混凝土 压缩试验 劈裂抗拉试验 抗折试验 

分 类 号：TU528.2[建筑科学—建筑技术科学]