固废基三元胶凝系整体式复合墙板材料的合成与抗弯性能  

Synthesis and Bending Resistance of Integral Composite Wallboard Based on Solid Waste Ternary Cementitious System

作　　者：赵美艳 张丽[2] 黄伟[2] ZHAO Meiyan;ZHANG Li;HUANG Wei(School of Management,Wanjiang University of Technology,Maanshan 243031,China;School of Architectural Engineering,Anhui University of Technology,Maanshan 243032,China)

机构地区：[1]皖江工学院管理学院,安徽马鞍山243031 [2]安徽工业大学建筑工程学院,安徽马鞍山243032

出　　处：《安徽工业大学学报(自然科学版)》2025年第2期198-208,共11页Journal of Anhui University of Technology(Natural Science)

基　　金：安徽高校自然科学基金重大项目(KJ2018ZD006);安徽省住房城乡建设科学技术计划项目(2018YF−007)。

摘　　要：采用矿渣微粉、粉煤灰、脱硫石膏组成固废基三元胶凝系,结合水泥、聚苯乙烯颗粒和发泡剂,通过正交试验设计复合材料的配比方案,制备装配式钢结构住宅整体式复合墙板材料。测试不同因素水平组合下材料的抗压强度、干体积密度、导热系数、吸水率等指标,以抗压强度和干体积密度为主要优化目标确定最佳配合比。基于优选配合比,分别采用钢筋和GFRP筋2种筋材制作开窗洞和未开窗洞墙板试件,进行抗弯性能测试试验,通过试件的开裂荷载、极限破坏荷载、混凝土荷载–应变曲线、板内筋材荷载–应变曲线及荷载–变形曲线等参数评估材料的抗弯性能。结果表明:优选的材料配合比为水胶比0.4、三元胶凝比1∶1∶3、替代水泥率50%、聚苯颗粒掺量35%(体积分数),此时墙板材料的力学、轻质和保温等综合性能良好,28 d抗压强度为11.12 MPa、干体积密度为973 kg/m^(3)、导热系数为0.187 W/(m·K)、吸水率为10.06%;墙板材料的抗弯性能良好,钢筋墙板的开裂荷载和极限破坏荷载均高于GFRP筋墙板,且开洞会显著影响这两项荷载指标。A solid waste-based ternary cementitious system was formulated using slag micropowder,fly ash,and desulfurization gypsum,which was then combined with cement,polystyrene particles,and a foaming agent.An orthogonal experimental design was employed to prepare integrated composite wall panel materials for prefabricated steel structure residential buildings.The compressive strength,dry volume density,thermal conductivity,and water absorption of the materials under different factor-level combinations were tested.With the compressive strength and dry volume density as the main objectives,the optimal mix proportion for the composite wallboard material was selected.Based on the optimal mix proportion,wall panels reinforced with either steel bars or GFRP bars were fabricated,including specimens with and without window openings.Flexural performance tests were conducted,and parameters such as cracking load,ultimate failure load,concrete load–strain curve,reinforcement load–strain curve,and load–deflection curve were analyzed to evaluate the flexural performance of the materials.The results show that the optimal material mix proportion is a water-binder ratio of 0.4,a terpolymer cementation ratio of 1∶1∶3,a replacement cement ratio of 50%,and a polystyrene particle content of 35%(by volume fraction).At this mix proportion,the wallboard material exhibits excellent comprehensive performance in terms of mechanical properties,lightweight characteristics,and thermal insulation,with a 28-day compressive strength of 11.12 MPa,a dry bulk density of 973 kg/m^(3),a thermal conductivity of 0.187 W/(m·K),and a water absorption of 10.06%.The wallboard material demonstrates good flexural performance,with steel-reinforced wallboards showing higher cracking and ultimate failure loads compared to GFRP-reinforced wallboards.The presence of openings affects both the cracking and ultimate failure loads of the wallboards.

关 键 词：装配式钢结构 复合墙板 脱硫石膏 矿渣微粉 粉煤灰 GFRP筋 钢筋 抗弯性能 

分 类 号：TU[建筑科学]