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喷射超高韧性水泥基复合材料导热系数的确定
DETERMINATION OF THERMAL CONDUCTIVITY AND THERMAL EXPANSION COEFFICIENT OF SPRAYED ULTRA-HIGH TOUGHNESS CEMENTITIOUS COMPOSITES
【摘要】 为研究喷射超高韧性水泥基材料(Sprayed-UHTCC)的导热性能,文中首先采用双试件防护热板法测量了喷射UHTCC的导热系数并与普通UHTCC进行了比较。比较结果表明,喷射UHTCC的导热系数相较于普通UHTCC降低了40%。然后利用X-CT重现了两类UHTCC的空隙分布,进一步解释了喷射UHTCC导热系数低于普通UHTCC的这一现象。
【Abstract】 To study the thermal conductivity of sprayed-UHTCC, the present paper measured the thermal conductivity of sprayed-UHTCC with the double-test piece protection hot plate method. Compared with the traditional UHTCC, it shows that the thermal conductivity of sprayed-UHTCC is reduced by 40%. The X-CT was used to reproduce the void distribution of the two types of UHTCC,which further explained the phenomenon that the thermal conductivity of sprayed-UHTCC is lower than that of UHTCC.
- 【文献出处】 低温建筑技术 ,Low Temperature Architecture Technology , 编辑部邮箱 ,2021年11期
- 【分类号】TU528
- 【下载频次】117