Study on dynamic mechanical properties of carbon nanotubes reinforced concrete subjected to freeze-thaw cycles

doi:10.1002/suco.202100464

CORC > 兰州理工大学 > 兰州理工大学 > 土木工程学院

	Study on dynamic mechanical properties of carbon nanotubes reinforced concrete subjected to freeze-thaw cycles
	Song, Shushuang 1; Niu, Yanning 1; Zhong, Xiumei 2
刊名	STRUCTURAL CONCRETE
	2021
关键词	concrete dynamic mechanical properties freeze-thaw cycle multi-walled carbon nanotubes SHPB
ISSN号	1464-4177
DOI	10.1002/suco.202100464
英文摘要	As a nanometer material, carbon nanotubes can inhibit the expansion of microcracks and is of great significance to improve the mechanical properties and durability of concrete. In order to explore the mechanism of dynamic mechanical properties enhancement of carbon nanotube reinforced concrete under impact load after freeze-thaw cycles, the dynamic compression test of carbon nanotube reinforced concrete samples was carried out by using the control variable method with freeze-thaw cycles and impact air pressure as variables. The results showed that under the same impact pressure, the peak stress of carbon nanotube reinforced concrete sample decreased gradually with the increase of freeze-thaw cycles. The corresponding strain increased slightly, and the stress-strain curve moved to the right and down as a whole. Under the same freeze-thaw cycle, the peak stress of carbon nanotube reinforced concrete sample increased with the increase of strain rate, and the dynamic strength growth factor DIF also increased, showing an obvious strain rate strengthening effect. In addition, under the same freeze-thaw cycles and external impact load, the dynamic strength of carbon nanotube concrete is 41.97 and 54.21 MPa, respectively, which is 22.27 and 25.81% higher than that of ordinary plain concrete. The results show that carbon nanotube reinforced concrete samples have higher dynamic mechanical properties and freeze-thaw cycle resistance than ordinary plain concrete samples.
WOS研究方向	Construction & Building Technology ; Engineering
语种	英语
出版者	ERNST & SOHN
WOS记录号	WOS:000734957000001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/154928]
专题	土木工程学院
作者单位	1.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China; 2.China Seismol Bur, Lanzhou Inst Geotech Seismol, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Song, Shushuang,Niu, Yanning,Zhong, Xiumei. Study on dynamic mechanical properties of carbon nanotubes reinforced concrete subjected to freeze-thaw cycles[J]. STRUCTURAL CONCRETE,2021.
APA	Song, Shushuang,Niu, Yanning,&Zhong, Xiumei.(2021).Study on dynamic mechanical properties of carbon nanotubes reinforced concrete subjected to freeze-thaw cycles.STRUCTURAL CONCRETE.
MLA	Song, Shushuang,et al."Study on dynamic mechanical properties of carbon nanotubes reinforced concrete subjected to freeze-thaw cycles".STRUCTURAL CONCRETE (2021).