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工程科学与技术:2019,51(5):199-205
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废玻璃粉混凝土力学性能研究
(1.广州大学 土木工程学院, 广东 广州 510006;2.南华大学 土木工程学院, 湖南 衡阳 421001)
Study on Mechanical Properties of Waste Glass Powder Concrete
(1.School of Civil Eng., Guangzhou Univ., Guangzhou 510006, China;2.School of Civil Eng., Univ. of South China, Hengyang 421001, China)
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投稿时间:2018-12-16    修订日期:2019-06-05
中文摘要: 为实现城市固体垃圾废玻璃资源化,以不同掺量废玻璃粉取代水泥,按标准试验方法研究了C30与C50两种强度等级的废玻璃粉混凝土(waste glass powder concrete,WGPC)各类强度变形指标。试验发现:C30WGPC在废玻璃粉掺量在25%~30%之间时,抗压强度同比降低幅度最大,达到了21.7%,C30WGPC替代水泥掺量可在0~25%以内,C50WGPC最佳掺量可大于25%;废玻璃粉的掺入改善了混凝土的脆性性能,随着试配强度等级的提高脆性会有所增大,C50WGPC轴压强度与抗压强度关系式可以近似地进行普通混凝土两者关系的换算;另外,WGPC弹性模量公式适用于计算普通混凝土的弹性模量,WGPC泊松比与普通混凝土泊松比相差不大。试验结果表明废玻璃粉可较大掺量试配强度等级较高的混凝土,并为WGPC的工程应用提供基础参数。
Abstract:In order to realize the recycling of municipal solid waste glass, the various strengths and deformation indexes of C30 and C50 strength grades waste glass powder concrete (WGPC) were studied according to the standard test method by replacing cement with waste glass powder in different dosages. It showed that when the amount of waste glass powder was between 25%~30%, the decrease in compressive strength of C30WGPC was the largest, reaching 21.7%. The replacement of cement by C30 WGPC could be within 0~25% and the optimal blending amount of C50 WGPC could be greater than 25%. The waste glass powder incorporation improved the concrete brittleness and the concrete brittleness would increase with the strength grade increasing. The relationship between axial compression strength and cubic compressive strength of C50WGPC could be used to approximately calculate by the conversion of ordinary concrete. In addition, the WGPC elastic modulus formula was suitable for calculating the ordinary concrete elastic modulus and the Poisson ratio of WGPC was not much different from the ordinary concrete. The test results show that the waste glass powder can be used to test the concrete with higher strength grade and provide the basic parameters for the WGPC engineering application.
文章编号:201801394     中图分类号:TU528.31    文献标志码:
基金项目:国家自然科学基金项目(51778158;51478128;51278135);广东省水利科技创新重点项目(2017-32);住房与城乡建设部科研开发项目(2010-K3-27;2010-K4-18);广州大学研究生创新能力培养资助计划(2018GDJC-D08)
作者简介:李松(1989-),男,博士生,工程师.研究方向:高强与高性能混凝土.E-mail:1111716006@e.gzhu.edu.cn
引用文本:
李松,焦楚杰,甘元初.废玻璃粉混凝土力学性能研究[J].工程科学与技术,2019,51(5):199-205.
LI Song,JIAO Chujie,GAN Yuanchu.Study on Mechanical Properties of Waste Glass Powder Concrete[J].Advanced Engineering Sciences,2019,51(5):199-205.