EPS颗粒掺量对脱硫石膏基轻质复合材料性能的影响  

Effect of EPS content on properties of desulfurized gypsum based light composites

作　　者：严佳乐 肖长青 唐艳娟[1,2] 夏多田 YAN Jiale;XIAO Changqing;TANG Yanjuan;XIA Duotian(College of Water Conservancy&Architectural Engineering,Shihezi University,Shihezi,Xinjiang 832003,China;Xinjiang Production&Construction Group Engineering Laboratory for Seismic and Energy-Saving Building in High Earthquake Intensity and Cold Zone,Shihezi,Xinjiang 832003,China)

机构地区：[1]石河子大学水利建筑工程学院,新疆石河子832003 [2]新疆兵团高烈度寒区建筑抗震节能技术工程实验室,新疆石河子832003

出　　处：《石河子大学学报（自然科学版）》2024年第5期592-599,共8页Journal of Shihezi University(Natural Science)

基　　金：国家自然科学基金项目(52168026)。

摘　　要：为研究EPS颗粒对脱硫石膏基复合材料性能的影响,将EPS颗粒按50%~300%体积外掺加入脱硫石膏基复合材料中。从工作性能、物理性能、耐久性能、力学性能等方面分析了EPS颗粒掺量对复合材料性能的影响,并对其单轴应力-应变关系进行了拟合。研究结果表明:当EPS颗粒掺量逐渐增大时,除吸水率外,材料表观密度、导热系数,抗压、抗折强度等指标都呈现降低的趋势,而软化系数呈现上下波动的变化趋势,且除300%组外,都大于0.80;当EPS颗粒体积掺量为200%时,材料综合性能最佳,此时材料的密度为972.8 kg·m^(-3),导热系数为0.1751 W·(m·K)^(-1),软化系数为0.932,抗压强度、抗折强度分别为4.34、1.33 MPa。拟合的材料单轴应力-应变表达式与试验结果吻合良好。本文结果可为脱硫石膏基轻质复合材料的研究和应用提供一定的参考。In order to study the effect of EPS particles on the properties of desulphurized gypsum matrix composites,EPS particles were added to desulphurized gypsum matrix materials by 50%~300%volume.The effects of EPS particle content on the properties of the composites were analyzed from the aspects of working properties,physical properties,durability and mechanical properties,and the uniaxial stress-strain relationship was fitted.The results showed that when the content of EPS particle increased gradually,the material apparent density,thermal conductivity,compressive strength,bending strength and other indexes show a decreasing trend,while the softening coefficient show a fluctuating trend,all of which were greater than 0.80 except for the 300%group.When the volume content of EPS particles was 200%,the overall performance of the material was the best.At this time,the material density was 972.8 kg·m^(-3),the thermal conductivity was 0.1751 W·(m·K)^(-1),the softening coefficient was 0.932,and the compressive and folding strength were 4.34 and 1.33 MPa,respectively.The fitted uniaxial stress-strain expression is in good agreement with the experimental results.The results of this paper can provide some reference for the research and application of light weight composite materials based on desulfurization gypsum.

关 键 词：原状脱硫石膏 EPS颗粒 耐久性能 力学性能 应力-应变曲线 

分 类 号：TU528[建筑科学—建筑技术科学]