Effect of fiber volume content on electromechanical behavior of strain-hardening steel-fiber-reinforced cementitious composites

SAGE Publications - Tập 49 Số 29 - Trang 3621-3634 - 2015
Jiandong Song1, Duy H. N. Nguyen1, Chatchai Manathamsombat1, Dong-Joo Kim1
1Department of Civil and Environmental Engineering, Sejong University, Seoul, Republic of Korea

Tóm tắt

This research investigated the effect of fiber volume content on the electromechanical behavior of strain-hardening steel-fiber-reinforced cementitious composites under direct tension. There is strong correlation between the change of electrical resistivity and the tensile response of strain-hardening steel-fiber-reinforced cementitious composites: the electrical resistivity of strain-hardening steel-fiber-reinforced cementitious composites clearly decreased during strain hardening as the tensile strain of them increased. The electrical conductivity, tensile resistance, and damage-sensing capacity of strain-hardening steel-fiber-reinforced cementitious composites were generally increased as the volume content of twisted steel fibers added in a mortar matrix increased from 0.0 to 2.0%. The strain-hardening steel-fiber-reinforced cementitious composites with fiber content more than 1% by volume produced high damage-sensing capacity with high nominal gauge factor: absolute value over 150. Besides, the addition of carbon black or ground granulated blast furnace slag in mortar matrices significantly reduced the electrical resistivity but slightly enhanced the damage-sensing capability of strain-hardening steel-fiber-reinforced cementitious composites.

Từ khóa


Tài liệu tham khảo

10.1016/j.cemconres.2014.01.002

10.1016/j.compositesb.2014.09.037

10.1617/s11527-006-9103-2

10.1016/0008-8846(73)90097-5

10.1088/0964-1726/18/5/055010

10.1016/j.cemconres.2005.02.004

10.1061/(ASCE)0899-1561(2005)17:4(379)

10.1088/0964-1726/15/5/023

10.1177/1045389X09354786

10.1088/0964-1726/2/1/004

Wen SH, 2005, ACI Mater J, 102, 244

10.1016/S0008-8846(98)00204-X

10.3151/jact.1.127

10.1680/adcr.2003.15.3.119

10.1106/104538902031861

10.1016/0008-8846(92)90104-4

Naaman AE, 1996, Naaman AE and Reinhardt HW (eds) High performance fiber reinforced cement composites: HPFRCC 2, Proceedings of 2nd international workshop on HPFRCC, Chapter 41, RILEM, No. 31, 1

10.1016/j.cemconcomp.2012.04.007

10.1016/S0927-796X(97)00021-1

10.1016/j.cemconres.2003.09.003

10.1016/S0008-8846(01)00753-0

10.1016/S0008-8846(00)00382-3

10.1016/0956-7151(95)90259-7

10.1016/j.cemconcomp.2011.09.009

10.1617/s11527-010-9650-4

10.1016/S0008-8846(98)00211-7

10.1016/j.compscitech.2008.03.007

Thông tin
Thông tin xuất bản

SAGE Publications

Tập 49 Số 29

3621-3634

Thông tin tác giả