| 摘要: |
| 高温下地聚物混凝土（GPC）热工性能是研究火灾中GPC结构高温反应的基础,然而目前国内外尚未见相关文献报道.通过瞬态平面热源法测得C40和C50两组矿渣-粉煤灰基GPC在室温、100,200,300,400,500和600℃下的体积比热容（比热容和密度的乘积）、导热系数、热扩散系数,并基于实测数据建立了矿渣-粉煤灰基GPC热工性能与温度的关系模型.研究成果为确定GPC结构在火灾作用下的温度场分布,进而分析其在火灾下的结构力学反应提供了重要参数. |
| 关键词: 地聚物混凝土（GPC） 高温 比热容 导热系数 热扩散系数 |
| DOI：10.20192/j.cnki.JSHNU(NS).2024.06.009 |
| 分类号:TU111.2 |
| 基金项目:国家自然科学基金（52278510）；上海市自然科学基金（22ZR1446400） |
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| Experimental study on thermal properties for geopolymer concrete under high temperature |
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WEI Xinming1,2, ZHU Meichun1
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1.School of Civil Engineering, Shanghai Normal University, Shanghai 201418, China;2.Shanghai Fengxian Engineering Construction Management Co., Ltd., Shanghai 201401, China
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| Abstract: |
| The thermal properties of geopolymer concrete （GPC） under high temperature were the basis for studying high-temperature reactions of GPC structure in fires. However, there were no relevant literature reports both at home and abroad currently. In this paper, the volume specific heat （product of specific heat and density）, thermal conductivity,thermal diffusivity of C40 and C50 slag-fly ash based GPCs were measured by the transient plane heat source method at room temperature, 100, 200, 300, 400, 500 and 600 ℃. Based on the measured data, relationship models between the thermal properties of slag-fly ash based GPC and high temperature were proposed. The important parameters for determining the temperature field distribution of GPC structures andfurther analyzing the mechanical response of structures under fires were provided by the research. |
| Key words: geopolymer concrete （GPC） high temperature specific heat thermal conductivity thermal diffusivity |
