热线法测定麦秆纤维增强新型材料热工参数

朱晶; 冯世辉; 刘劭同; 曲子健; 宋丽卓

doi:10.13204/j.gyjzG21012105

热线法测定麦秆纤维增强新型材料热工参数

doi: 10.13204/j.gyjzG21012105

1. 哈尔滨理工大学建筑工程学院, 哈尔滨 150080;
2. 中国地震局工程力学研究所, 中国地震局地震工程与工程振动重点实验室, 哈尔滨 150080

基金项目:

黑龙江省科学基金项目（LH2019E066）；国家自然科学基金资助项目（51508140）；国家重点研发计划资助项目（2017YFC0806100）；大学生创新创业项目（202010214213）。

详细信息

作者简介:
朱晶,女,1981年出生,讲师,硕士生导师,博士后。电子信箱:zhujing@hrbust.edu.cn

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- 文章访问数: 115
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- 被引次数: 0
出版历程
- 收稿日期: 2021-01-21
- 网络出版日期: 2021-08-19

THERMAL PARAMETERS OF WHEAT-STRAW FIBER REINFORCED NOVEL MATERIAL MEASURED WITH HOT-WIRE METHOD

1. College of Civil Engineering and Architecture, Harbin University of Science and Technology, Harbin 150080, China;
2. Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China

摘要

摘要: 采用热线法测定植物纤维增强碱矿渣胶凝材料（PF-AASCM）在高温（20~800 ℃）下的热工参数（导热系数、热扩散系数、比热容），可知其导热系数在0.8~3.7 W/（m·K）之间，热扩散系数在0.3~1.1 mm²/s之间，比热容在0.5~1.8 kJ/（kg·K）之间，各热工参数在200 ℃时出现小高峰，说明发生了强放热反应。将PF-AASCM与混凝土热工系数进行对比，分析结果表明：800 ℃时PF-AASCM导热系数与混凝土基本一致，其热扩散系数较高，导热系数和比热容较低。说明PF-AASCM热扩散能力较好，但传导和贮存热量的能力不高，表明PF-AASCM具有隔热蓄热能力。同时实测了高温试件中心温度，并与有限元温度场模拟结果相比，两者吻合较好。
- 碱矿渣胶凝材料 /
- 植物纤维 /
- 热线法 /
- 热工性能
Abstract: The thermal parameters (thermal conductivity, thermal diffusion and specific heat capacity) of PF-AASCM were measured with hot-wire method at high temperatures (20 to 800℃). The thermal conductivity, thermal diffusion and specific heat capacity of PF-AASCM ranged from 0.8 to 3.7 W/(m·K), from 0.3 to 1.1 m²/s, and from 0.5 to 1.8 kJ/(kg·K), respectively. The thermal parameters showed a small peak at 200℃, which is indicated that a strong exothermic reaction happens. The thermal conductivity of PF-AASCM and concrete material was compared, and the analysis results showed that the thermal conductivity of PF-AASCM at 800℃ was basically the same as that of concrete. Its thermal diffusivity is higher, thermal conductivity and specific heat are relatively lower. It shows that PF-AASCM has good thermal diffusivity, but poor heat conduction and storage capacity, which indicates that PF-AASCM has heat insulation and heat storage capacity. The central temperature of the high-temperature specimen was measured, which was compared with the simulation results of finite element in the temperature field, the increase of the central temperature of the specimens is in good agreement.
- alkali-activated slag cementitious material /
- plant fiber /
- hot-wire method /
- thermal performance

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参考文献(20)

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