Carbon nanotubes reinforced reactive powder concrete

被引：72

作者：

Ruan, Yanfeng ^{[1
]}

Han, Baoguo ^{[1
]}

Yu, Xun ^{[2
,3
]}

Zhang, Wei ^{[1
]}

Wang, Danna ^{[1
]}

机构：

[1] Dalian Univ Technol, Sch Civil Engn, Dalian 116024, Peoples R China

[2] New York Inst Technol, Dept Mech Engn, New York, NY 11568 USA

[3] Wuhan Univ Sci & Technol, Sch Mech Engn, Wuhan 430081, Peoples R China

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2018年 / 112卷

基金：

美国国家科学基金会;

关键词：

Carbon nanotubes and nanofibers; Strength; Mechanical properties; Mechanical testing; MULTIFUNCTIONAL CEMENTITIOUS COMPOSITES; MECHANICAL-PROPERTIES; NANO-SILICA; NANOCOMPOSITES; MICROSTRUCTURE; CNT; DISPERSION; STRENGTH; BEHAVIORS; FIBERS;

D O I：

10.1016/j.compositesa.2018.06.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, four types of multi-walled carbon nanotubes (MWCNTs) were incorporated into reactive powder concrete (RPC) with water or heat curing. The enhancing effects of MWCNT types and curing methods on mechanical properties of RPC were investigated. Experimental results indicate that adding proper type and content of MWCNTs can effectively improve mechanical properties of RPC including flexural strength, fracture energy, compressive strength/toughness and flexural strength to compressive strength ratio. In general, these mechanical properties of MWCNTs filled RPC with heat curing are superior to that with water curing, which indicates that heat curing is more beneficial for reinforcing impact of MWCNTs to RPC than water curing. In most cases, the critical length of MWCNTs in RPC is smaller than actual length, which indicates MWCNTs will be snapped when damage occurs in RPC. In addition, the reinforcement of MWCNTs to RPC results from crack bridging and pull out effects.

引用

页码：371 / 382

页数：12

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