混凝土再生骨料—赤泥充填材料的抗压强度及电阻率特性研究  

Study on compressive strength and resistivity characteristics of recycled concrete aggregate-red mud filling material

作　　者：梁利生 任瑜强 杨帆 王慧芳 LIANG Lisheng;REN Yuqiang;YANG Fan;WANG Huifang(Department of Civil and Architectural Engineering,Shanxi Institute of Technology,Yangquan 045000,China;The Cultivation Base of Shanxi Key Laboratory of Mining Area Ecological Restoration and Solid Wastes Utilization,Yangquan 045000,China;Department of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]山西工程技术学院土木与建筑工程系,山西阳泉045000 [2]矿区生态修复与固废资源化省市共建山西省重点实验室培育基地,山西阳泉045000 [3]太原理工大学土木工程学院,山西太原030024

出　　处：《混凝土》2022年第7期87-90,共4页Concrete

基　　金：国家自然科学基金(51978438);山西省重点研发计划项目(201803D31047);山西省新兴产业领军人才项目(202014)。

摘　　要：将废旧混凝土及赤泥应用于膏体充填开采,既解决了膏体充填材料原材料不足的问题,又可以实现建筑、工业固废的资源化利用,带来良好的环境效益。以废旧混凝土作为骨料,赤泥取代大部分水泥作为主要胶结料,制备膏体充填材料。通过研究其立方体抗压强度及电阻率特性,得到在混凝土再生骨料∶赤泥为2∶1时,试样达到最大抗压强度,且其电阻率值与抗压强度呈线性正相关关系。在工程应用时,可选用这一配合比,并可通过测量电阻率值反映其抗压强度指标。The application of concrete solid waste and red mud in paste filling mining can not only solve the problem of insufficient raw materials of paste filling materials,but also realize the resource utilization of construction and industrial solid waste and bring good environmental benefits.In this study,the paste filling material was prepared by using concrete solid waste as aggregate and red mud instead of most cement as main cementing material.By studying its cubic compressive strength and resistivity characteristics,it is found that when the ratio of recycled concrete aggregate to red mud is 2∶1,the sample reaches the maximum compressive strength,and its resistivity value has a linear positive correlation with compressive strength.In engineering application,this ratio can be selected,and its compressive strength index can be reflected by measuring resistivity value.

关 键 词：膏体充填 废旧混凝土 赤泥 抗压强度 电阻率 

分 类 号：TU528.041[建筑科学—建筑技术科学]