建筑渣土再生夹芯墙板制备及性能  

Preparation and Performance of Construction Dreg Recycled Sandwich Wall Panel

作　　者：李仁双 郑俊峰 陈绍游 殷晓明 金超 杨奉源 蒋俊 卢忠远 LI Ren-shuang;ZHENG Jun-feng;CHEN Shao-you;YIN Xiao-ming;JIN Chao;YANG Feng-yuan;JIANG Jun;LU Zhong-yuan(State Key Laboratory of Environment-friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China;Sichuan Shudao Construction Science and Technology Co Ltd;Ningbo Construction Engineering Group Co Ltd,Ningbo 315040,China)

机构地区：[1]西南科技大学环境友好能源材料国家重点实验室,绵阳621010 [2]四川蜀道建筑科技有限公司,成都610001 [3]宁波建工工程集团有限公司,宁波315040

出　　处：《武汉理工大学学报》2024年第12期24-29,共6页Journal of Wuhan University of Technology

基　　金：四川科技计划项目(2023YFG0379);宁波市科技计划项目(2022T003)。

摘　　要：以建筑渣土泥浆为成孔剂,矿渣粉、水泥为胶凝材料,设计制备建筑渣土再生多孔材料,用作保温芯材与建筑垃圾再生混凝土复合,获取建筑垃圾再生夹芯墙板,开展性能测试与节能效能评估。研究表明:胶凝材料56 kg/m^(3),泥浆1 279 kg/m^(3)时,可以获得干密度为745 kg/m^(3),导热系数为0.108 W/(m·K)的再生多孔材料;利用该再生多孔材料与建筑垃圾再生混凝土可制备出抗压强度为17.7 MPa、传热系数为0.81 W/(m^(2)·K)的夹芯墙板;墙板在夏热冬冷地区应用最多可减少125.2 MJ/m^(2)的能耗,减少建筑碳排放10.5 kg/(m^(2)·a)。Recycled porous materials based on construction dregs were prepared, when construction dreg slurry was used as pore-forming agent, slag and cement were used as binders, and then the materials were used as insulation materials and compounded with construction and demolition waste(CDW) recycled concrete to fabricate CDW recycled sandwich wall panels, and then performance test and energy-saving efficiency evaluation were conducted.The results show that the dreg slurry of 1 279 kg/m^(3) and binder of 56 kg/m^(3) can be used to obtain recycled porous material with actual dry density of 745 kg/m^(3)and thermal conductivity of 0.108 W/(m·K).Using the insulation material and CDW recycled concrete can obtain sandwich wall panel with compressive strength of 17.7 MPa and heat transfer coefficient of 0.81 W/(m^(2)·K) under dried state.Applying the wall panel in hot summer and cold winter zone can lead to reduction of 125.2 MJ/m^(2) energy consumption and 10.5 kg/(m^(2)·a) of carbon emission.

关 键 词：建筑渣土 再生夹芯墙板 能耗 夏热冬冷地区 

分 类 号：TU525.9[建筑科学—建筑技术科学]