LIU Yin1 ， LU Chang1 ， ZHANG Haoqiang2 ， LI Jinping1
（1. a. College of Mining and Safety Engineering； b. State Key Laboratory of Mine Disaster Prevention and Control， Shandong University of Science and Technology， Qingdao 266590， China； 2. Zhengzhou Design and Research Institute of Coal Industry Co.， Ltd.， Zhengzhou 450000， China）
Abstract： According to the physical and chemical properties of renewable powders derived from construction waste, the cementitious property of the renewable powders was studied. Cement mortar tests were carried out on the renewable powders with different dosages. Specimen strength of the renewable powders was compared with cement strength. The effect of lime or gypsum as activators on activity of renewable powders was discussed. The results show that the renewable powders have hydration activity, which can partly replace cement as cementitious materials. The specimen strength with mass fraction of renewable powders of 10% is very close to cement strength. When the mass fraction of renewable powders is 30%, the activity of the renewable powders can be motivated effectively by adding lime with mass fraction of 10% or gypsum with mass fraction of 1% as the activator.
Keywords: renewable powder; construction waste; cementitious materials
文章编号：1008-5548（2015）05-0033-04
DOI：10.13732/j.issn.1008-5548.2015.05.007
收稿日期：2014-11-24，修回日期：2015-05-15，在线出版时间：2015-10-21。
基金项目：国家自然科学基金项目，编号：41471025；山东省高等学校科技计划项目：编号：J13LH03；山东省矿山灾害预防控制国家重点实验室培育基地 2013 年开放基金项目，编号：MDPC2013KF10。
第一作者简介：刘音(1973—)，女，博士，讲师，研究方向为矿山环境保护。E-mail: 876017138@qq.com。
