掺大理石尾矿不饱和聚酯树脂混凝土的性能研究  

Study on performance of unsaturated polyester resin concrete with marble tailings

作　　者：王昀山 伍小萍 黄惠佳 杨凌聪 WANG Yunshan;WU Xiaoping;HUANG Huijia;YANG Lingcong(Hualan Design&Consulting Group Co.,Ltd.,Nanning 530012,China)

机构地区：[1]华蓝设计(集团)有限公司,广西南宁530012

出　　处：《混凝土与水泥制品》2025年第1期111-115,共5页China Concrete and Cement Products

基　　金：华蓝设计(集团)有限公司内部研究与技术开发计划项目(2023006)

摘　　要：以不饱和聚酯树脂(UPR)和大理石尾矿为主要原材料制备了树脂混凝土,研究了UPR掺量(7.7%、9.1%、9.6%、10.0%)和m尾矿粉∶m尾矿砂(0∶1.0、0.3∶1.0、0.6∶1.0、0.8∶1.0、1.0∶1.0)对树脂混凝土性能的影响,并进行了微观机理分析。结果表明:随着UPR掺量的降低,试样的压缩强度和弯曲强度均降低;在UPR掺量为7.7%的情况下,随着尾矿粉掺量的增加(即尾矿砂掺量降低),试样的压缩强度和弯曲强度均先增大后减小,最佳m尾矿粉∶m尾矿砂为0.6∶1.0;合理调整m尾矿粉∶m尾矿砂可有效提高树脂混凝土的在固化过程中的热传导速率,改善微观结构,且不会对固化产物的化学结构和结晶性能造成影响,环境和经济效益显著。Resin concrete was prepared by using unsaturated polyester resin(UPR)and marble tailings as the main raw materials.The effects of the content of UPR(7.7%、9.1%、9.6%、10.0%)and mtailings powder∶mtailings sand(0∶1.0,0.3∶1.0,0.6∶1.0,0.8∶1.0,1.0∶1.0)on the properties of resin concrete were studied,and the micro mechanism analysis was conducted.The results show that with the decrease of the content of UPR,the compressive strength and bending strength of the sample decrease.Under the condition of the UPR content of 7.7%,as the content of tailings powder increases(i.e.the content of tailings sand decreases),the compressive strength and bending strength of the sample first increase and then decrease,and the optimal mtailings powder∶mtailings sand is 0.6:1.0.Reasonable adjustment of the mtailings powder∶mtailings sand can effectively improve the thermal conductivity rate of resin concrete during the curing process,improve the microstructure,and will not affect the chemical structure and crystallization properties of the cured products,resulting in significant environmental and economic benefits.

关 键 词：树脂混凝土 尾矿砂 尾矿粉 力学性能 微观分析 

分 类 号：TU528.41[建筑科学—建筑技术科学]