玄武岩纤维增强高强轻骨料混凝土基本力学性能试验  

Basic mechanical properties experiment of basalt fiber reinforced high-strength lightweight aggregate concrete

作　　者：王钧[1] 文慧[1] 王志彬[1] 

机构地区：[1]东北林业大学土木工程学院,黑龙江哈尔滨150040

出　　处：《建筑科学》2017年第11期48-53,共6页Building Science

基　　金：黑龙江省应用技术研究与开发计划项目(2013G0763);黑龙江省博士后科研启动基金项目(LBH-Q15011)

摘　　要：通过对LC50高强轻骨料混凝土在短切玄武岩纤维体积掺量为0、0.1%、0.2%、0.3%时的基本力学性能的试验研究,分析了玄武岩纤维的体积参量对高强轻骨料混凝土力学强度的影响。试验结果表明:玄武岩纤维的掺入改善了高强轻骨料混凝土的脆性,其立方体抗压强度和轴心抗压强度均在玄武岩纤维体积掺量为0.1%时达到峰值,劈裂抗拉强度随着纤维体积掺量的增加而持续增大,抗折强度在纤维体积掺量达到0.2%后有下降趋势;分析得到短切玄武岩纤维高强轻骨料混凝土的最佳纤维体积掺量,为玄武岩纤维高强轻骨料混凝土的工程应用提供理论基础。In order to investigate and analyse the effect of basalt fibers content of high-strength lightweight aggregate concrete on the mechanical properties,a series of experiments are carried out,including the cubic compression strength,axial compression strength,split tensile strength.Experimental data show that the basalt fiber can improve the brittleness of high-strength lightweight aggregate concrete,the cubic compression strength and axial compression strength reach a peak value with fiber dosage of 0.1%.With the increase of fiber volume content,the split tensile strength increases,and the flexural strength declines after it reaches 0.2%.The optimum fiber volume fraction of short cut basalt fiber reinforced high-strength lightweight aggregate concrete is obtained,which provides a theoretical basis for the engineering application of basalt fiber reinforced high strength lightweight aggregate concrete.

关 键 词：玄武岩纤维 高强轻骨料混凝土 力学性能 

分 类 号：TU528.572[建筑科学—建筑技术科学]