掺杂橡胶颗粒对砂加气混凝土砌块性能影响研究  

Research on the influence of rubber powder on the properties of fly-ash aerated concrete block

作　　者：张朝晖[1,2] 卫少阳[2] 李宗利 ZHANG Zhaohui;WEI Shaoyang;LI Zongli(College of Water Conservancy and Architecture Engineering,Northwest A&F University,Yangling 712100,China;College of Transportation and Mapping Engineering,Yangling Vocational and Technical College,Yangling 712100,China)

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]杨凌职业技术学院交通与测绘工程分院,陕西杨凌712100

出　　处：《功能材料》2018年第4期4207-4212,共6页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(51379178);陕西省科学技术研究发展计划资助项目(2012K01-32);杨凌职业技术学院自然科学研究基金资助项目(A2016017)

摘　　要：将回收橡胶粉碎成平均粒径为700μm的颗粒用于砂加气混凝土砌块的制造,对比了不同掺杂量橡胶颗粒的砂加气混凝土砌块的干密度、干燥收缩性、抗拉强度、抗压强度以及养护过程中相关性能的变化规律。结果表明,橡胶颗粒掺杂量为4%(质量分数)的砂加气混凝土砌块性能最优,其干密度降低4.2%,抗拉强度提升近40%,抗压强度提升4.7%,且抗渗性能得到显著改善。相关性能能够在60d的养护考察周期内很好地保持,且养护周期越长性能优势越明显,表明橡胶颗粒在砂加气混凝土砌块制造领域具有良好的应用前景。Recycled tyre were breaked into powder with uniform particle size of 700μm,then different amount of rubber powder were mixed with the rare materials for the manufacture of fly-ash aerated concrete blocks.Dry volume density,drying shrinkage,water penetration height,spliting tensile strength and compressive strength were studied.The results show that the dry volume density is reduced by 4.2%,tensile strength is increased of nearly 40%,compressive strength is increased of 4.7%,and permeability performance is improved significantly.The related properties can be well maintained in the 60 days curing cycle,and the longer the curing period is,the more obvious advantage is,indicating that rubber particles have good application prospects in the field of fly-ash aerated concrete block manufacture.

关 键 词：橡胶颗粒 混凝土砌块 抗拉强度 抗压强度 

分 类 号：U414[交通运输工程—道路与铁道工程]