纤维轻骨料混凝土抗冻性试验研究  

AN EXPERIMENTAL STUDY ON FROST RESISTANCE OF FIBER-REINFORCED LIGHTWEIGHT AGGREGATE CONCRETE

作　　者：刘大鹏[1] 霍俊芳[1] 李金帅 

机构地区：[1]内蒙古工业大学土木工程学院,呼和浩特010051 [2]呼铁局科研所,呼和浩特010018

出　　处：《内蒙古工业大学学报（自然科学版）》2009年第2期147-150,共4页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：内蒙古自治区自然科学基金资助项目(200711020715);"十一五"国家科技支撑计划项目(2006BAJ05B06-06)

摘　　要：用天然火山渣作为粗骨料,配制钢纤维、聚丙烯纤维和混杂纤维轻骨料混凝土.通过冻融循环试验研究掺入不同纤维和冻融循环次数对纤维轻骨料混凝土质量损失、相对动弹性模量以及对其抗冻性能的影响.试验结果表明:掺入纤维能够阻止轻骨料混凝土中裂缝的产生和发展,改善轻骨料混凝土的抗冻性能.从质量损失和相对动弹性模量方面比较,掺入混杂纤维优于掺入钢纤维和聚丙烯纤维.When lightweight aggregate concrete is prepared, scoria is mixed in as the coarse aggregate,while steel fibers,polypropylene fibers and hybrid fibers are added respectively. The effect of different fiber additives with different number of freeze-thaw circulation on weight loss rate of LWAC,as well as on its relative dynamic elastic modulus and frost resistance is investigated. Results indicate that the addition of fibers can reject the crack initiation and improve the frost resistance of LWAC. In terms of weight loss rate of LWAC and relative dynamic elastic modulus,hybrid fibers are proved to be the best additives for the preparation of LWAC.

关 键 词：轻骨料混凝土 钢纤维 聚丙烯纤维 混杂纤维 抗冻性能 

分 类 号：TU528[建筑科学—建筑技术科学]