PSAG三元体系水泥纤维混凝土的弹性模量  

Elastic modulus of fiber reinforced concrete with PSAG ternary system of cement

作　　者：杨福强[1] 杨建森[1] 刘文录 卢昌鑫 

机构地区：[1]宁夏大学土木与水利学院,银川750021 [2]空军西安飞行学院后勤部,西安710300 [3]兰州军区空军房地产管理处,兰州730020

出　　处：《中国科技论文》2016年第1期75-78,86,共5页China Sciencepaper

基　　金：国家自然科学基金资助项目(51168041);教育部创新团队发展计划项目(IRT1067)

摘　　要：为满足水泥混凝土路面快速修复的材料性能需要,以硫铝酸盐水泥复掺硅酸盐水泥、调节石膏掺量、聚丙烯纤维掺量和纤维长度为技术途径,制备了硅酸盐-硫铝酸盐-石膏(PSAG)三元体系水泥纤维混凝土,并采用正交试验方法研究了各因素对PSAG三元体系水泥纤维混凝土弹性模量的影响。结果表明:纤维掺量、石膏掺量和纤维长度对混凝土弹性模量的影响非常显著,mSA/mPC对混凝土弹性模量的影响显著;纤维掺量和石膏掺量对弹性模量的影响趋势是一致的,弹性模量随着其掺量的增加而减小;纤维长度为9mm时弹性模量最大;混凝土弹性模量与立方体抗压强度和表观密度之间满足幂函数乘积的关系,且在显著水平0.01时其相关性显著。In order to meet the requirements for quick repair of cement concrete pavement,an fiber reinforced concrete made with portland-sulphur aluminate-gypsum(PSAG)ternary system of cement was prepared by using sulphur aluminate cement,portland cement,dihydrate gypsum and polypropylene fiber,and an orthogonal test was adopted to study the elastic modulus of this kind of concrete.The results show that fiber dosage,dihydrate gypsum dosage and fiber length have very significant influence on of elastic modulus,and that of mSA/mPCis significant.Elastic modulus declines with fiber and dihydrate gypsum dosage increasing respectively.Elastic modulus reaches maximum when the fiber length is 9 mm.The math model described as product of power function characterizes competently the relationship of the elastic modulus to cube compressive strength and bulk density under the significance level 0.01.

关 键 词：PSAG三元体系水泥 硫铝酸盐水泥 硅酸盐水泥 二水石膏 聚丙烯纤维 纤维混凝土 弹性模量 

分 类 号：TU528[建筑科学—建筑技术科学]