废玻璃粒径对废玻璃砂浆耐高温性能的影响.pdf

第16卷第2期
建筑材科字预
Vol 16, No.2
2013年4月
JOURNAL OF BUILDING MATERIALS
Apr.,2013
文章编号:1007-9629(2013)02-0335-06
废玻璃粒径对废玻璃砂浆耐高温性能的影响
柯国军',柏纪平2,宋百姓
(1.南华大学城市建设学院,溯南衡阳421001;
格拉摩根大学高级技术学院, Pontypridd CF371DL)
摘要:用粒径1.18~5.00mm,600pm~1.18mm,300~600pm和<300km这4种废玻璃分别取
代(质量分数)30%,60%,100%天然砂配制砂浆,测试砂在20,300,400,600,800,900℃的抗压
强度和劈裂抗拉强度.结果表明:在常温下,用粒径≥300pm废玻璃取代天然砂后,砂浆强度低于
基准砂浆,且随废玻璃取代率増大而降低;用粒径<300m的废玻璃取代部分天然砂后,砂浆劈裂
抗拉强度略大于基准砂浆,抗压强度则大大高于基准砂浆;所有配合比砂浆强度均随着加热温度
的提高不断降低,强度与加热温度间呈良好的线性关系,相关系数大多>0.980;用粒径<300m
废玻璃取代60%以上天然砂,高温益化系数>1.25,可显著提高砂浆的高温性能
关键词:废玻璃;粒径;砂浆;高温;益化作用
中图分类号:TU528.041
文献标志码:A
doi:10.3969/,issn.1007-9629.2013,02.028
Effect of Waste Glass Particle Size on High Temperature Properties of Mortar
KE Guo-jun BAI Ji-bing, SONG Bai-xing
(1. School of Urban Construction, University of South China, Hengyang 421001, China;
2. Faculty of Advanced Technology, University of Glamorgan, Pontypridd CF37 1 DL, UK)
Abstract: Mortar was made with 1. 18-5.00 mm, 600 um-1. 18 mm, 300-600 pm and <300 pm waste
glass replacement of natural'sand at levels(by mass) of 30 %, 60% and 100 %. Mortar specimens were
tested for their compressive strength and splitting tension strength at 20, 300, 400, 600, 800 and 900 C
The experimental results show that the mortar which was made with =300 um waste glass replacement of
natural sand, its strengths at room temperature are lower than control mortar's and decrease with inerease
of tem perature. The mortar which was made with<300 um waste glass replacement of natural sand, its
splitting tension strength is slightly higher than control mortars and compressive strength is greatly higher
control mortars at room temperature. It was found that mortar strength of all mixes reduces with eleva
tion of temperature, a good linear relationship between strength and heating temperature is present, most
of the correlation coefficients are greater than 0.980. The waste glass for particle size<300 m and re
placement rate of more than 60% can get more than 1. 25 high temperature enhancement coefficient and can
significantly improve high temperature performance of mortar.
Key words: waste glass; particle size; mortar; high temperature; enhancement effect
发达国家和地区一直致力于废玻璃水泥混凝土面,少数研究涉及废玻璃混凝土(砂浆)的高温性
(砂浆)的研究,研究内容主要涉及废玻璃混凝土(砂、能.笔者曾用废玻璃取代(取代量为质量分数)
浆)的力学性能、碱骨料反应膨胀危害和耐久性等方30%~100%的细骨料和粗骨料,结果发现废玻璃对
收稿日期:2011-10-12;修订日期:2012-95-08
第一作者:柯国军(1964一),男,湖北黄梅人,南华大学教授,硕士生导师,硕士.E-mialkegi320@sina.com
关第一作者英国访学期间联合研究项目