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

作　　者：段素萍 吴平[2] 石振邦 DUAN Suping;WU Ping;SHI Zhenbang(Shanxi Vocational University of Engineering Science and Technology,Shanxi Jinzhong 030619,China;Institute of Advanced Engineering Structures and materials,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]山西工程科技职业大学,山西晋中030619 [2]浙江大学高性能建筑结构与材料研究所,杭州310058

出　　处：《低温建筑技术》2021年第11期77-80,共4页Low Temperature Architecture Technology

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。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.

关 键 词：喷射UHTCC UHTCC 导热系数 X-CT 

分 类 号：TU111.2[建筑科学—建筑理论]