熊志文,柯国军,陶 望,邹品玉
（南华大学 土木工程学院,湖南 衡阳 421001）
DOI：10.13732/j.issn.1008-5548.2021.01.010
收稿日期：2020-06-19,修回日期：2020-09-23，在线出版时间：2020-11-02 10:41。
基金项目：湖南省自然科学基金项目,编号:2019JJ60003。
第一作者简介：熊志文(1995—),男,硕士研究生,研究方向为高性能混凝土及固体废渣利用。E-mail:1716336530@qq.com。
通信作者简介：柯国军(1964—),男,硕士,教授,硕士生导师,研究方向为高性能混凝土及固体废渣利用。E-mail:kegj320@sina.com。
摘要：为探究废玻璃粉对水泥胶砂和混凝土2种水泥基材料流动性能的影响，测试在不同废玻璃粉粒径和质量分数条件下水泥胶砂的流动度和屈服应力，研究在不同水胶比条件下废玻璃粉的质量分数对混凝土坍落度的影响。结果表明:随着废玻璃粉粒径和质量分数的增大，水泥胶砂流动度和流动速率皆呈现减小的趋势，而屈服应力逐渐增大;废玻璃粉质量分数为10%时，粒径范围为38～53μm对水泥胶砂流动度的增强效果最好;碎石、卵石混凝土坍落度随着废玻璃粉质量分数的增大而减小，随着水胶比的增大而增大，碎石混凝土的坍落度总体要好于卵石混凝土的;废玻璃粉质量分数为10%、水胶比范围为0.40～0.50时，2种混凝土坍落度达到较优状态。
关键词：废玻璃粉；水泥胶砂；混凝土；流动度；屈服应力；坍落度
Abstract：In order to explore the influence of waste glass powder on the flow properties of two cement-based materials named as cement mortar and concrete,the fluidity and yield stress of cement mortar under different waste glass powder particle sizes and dosage conditions were tested. The influence of mass concentration of waste glass powder on the slump of concrete under the condition of water-binder ratio was studied. The results show that as the particle size and dosage of waste glass powder increase,the fluidity and flow rate of cement mortar show a decreasing trend,while the yield stress gradually increases. When mass concentration of waste glass powder is 10%,the particle size diameter range of 38-53 μm has the best effect on enhancing the fluidity of cement mortar. The slump of crushed stone and pebble concrete not only decreases with the increase of powder mass concentration of waste glass but also increases with the increase of the water-binder ratio. Besides,the slump of the gravel concrete is better than that of the gravel concrete. When powder mass concentration of waste glass is 10% and the water-binder ratio ranges 0. 40-0. 50,the slump of the two types of concrete reaches a better state.
Keywords：waste glass powder; cement mortar; concrete; fluidity; yield stress; slump
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