Nano-Engineered Strong, Durable and Multifunctional/Smart Concretes

摘要：

　　Micro/meso scale modification can bring big changes in macroscale property.The addition ofnanofillers makes materials strong, durable and multifunctional/smart.This paper aims at studying mechanical property, durability, electrical property, electromagnetic property and piezoresistivity of concrete with nano silica(NS), carbon nanotube(CNT), botryoid hybrid carbon material (BHCBM), nano graphite platelet(NGP) and nano-tip material(spiky spherical nickel particles), respectively.Results demonstrate that the compressive and flexural strengths of concrete show significant increases with the increasing contents of NS.The addition of CNT obviously enhances the transport property of concrete.The BHCBM endows the excellent electrical conductivity with concrete.Both shielding effectiveness and electromagnetic wave absorbing performance of concrete can be achieved by adding NGP.The concrete with nano-tip material has ultrahigh piezoresistive response to stress and strain.

关键词： Nano materials Concrete Strength Transport property Electrical property Electromagnetic property Piezoresitivity

作者: Si-qi Ding Li-qing Zhang Sheng-wei Sun Jian Ou-yang Bao-guo Han

作者单位: School of Civil Engineering, Dalian University of Technology, Dalian 116024, China School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China School of Transportation and Logistics, Dalian University of Technology, Dalian 116024, China

会议类型: 国际会议

会议名称: The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)

会议地点: 重庆

会议语种:英文

页码: 1084-1088

在线出版日期: 2016-07-25（万方平台首次上网日期，不代表论文的发表时间）