文献类型：期刊文献

英文题名：Study on the electrical conductivity, strength properties and failure modes of concrete incorporating carbon fibers and iron tailings

作者：Jiang, Ping[1];Hu, Xingchen[1];Li, Na[1];Wang, Wei[1];Zhang, De[2];Zhan, Haihua[3];Song, Ru[4];Yang, Song[5]

机构：[1]Shaoxing Univ, Shaoxing Key Lab Interact Soft Soil Fdn & Bldg Str, Sch Civil Engn, Shaoxing 312000, Peoples R China;[2]Shanghai Rd & Bridge Grp Co Ltd, Shanghai 200082, Peoples R China;[3]Shaoxing Univ, Sch Text Sci & Engn, Shaoxing 312000, Peoples R China;[4]Gansu Fourth Construct Grp Co Ltd, Lan Zhou 730060, Peoples R China;[5]Beibu Gulf Univ, Coll Civil Engn & Architecture, Qinzhou 535011, Peoples R China

年份：2025

卷号：36

起止页码：522

外文期刊名：JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T

收录：SCI-EXPANDED(收录号：WOS:001452421800001)、、EI(收录号：20251218069885)、Scopus(收录号：2-s2.0-105000173315)、WOS

基金：This research was funded by National Natural Science Foundation of China (Grant number 52179107) and Zhejiang Province Natural Science Foundation of China (Grant number LQ20E080005) .

语种：英文

外文关键词：Conductive concrete; Iron tailings; Mechanical properties; DIC; Micro performance

外文摘要：This study aims to explore the feasibility of preparing conductive concrete using carbon fibers and iron tailings and its application in snow and ice melting on roads, and to solve the problem of excessive stacking of iron tailings. In addition, the effects and action mechanisms of the water-binder ratio, the content of silica fume, the sand-binder ratio, and the content of carbon fibers on the electrical conductivity, mechanical properties, and failure modes of the concrete were studied. The results show that: (1) When the volume content of carbon fibers is 1 %, Carbon Fiber- Iron Tailing Conductive Concrete (CF-ITCC) has good electrical conductivity. Its resistivity ranges from 400 to 1800 52 cm, which meets the requirements for conductive concrete used in snow and ice melting on roads. (2) When the water-binder ratio is 0.24, the content of silica fume is 18 %, and the sand-binder ratio is 0.8, the compressive strength and flexural strength of CF-ITCC are the highest. (3) The digital image correlation (DIC) technique was used to reveal that the main failure mode of CF-ITCC is shear failure. However, specimens G18 % and I1.6 exhibit some bulging failures, accompanied by corresponding "X" and "H" type cracks. The research shows that it is feasible to prepare conductive concrete for snow and ice melting on roads and building heating using carbon fibers and iron tailings, thereby reducing the potential environmental impacts associated with iron tailings and meeting the requirements of the green development of the construction industry.