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 Liem 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.

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Tài liệu tham khảo

10.1016/j.cemconres.2014.01.002

Li M, Lin V, Lynch J, et al. Multifunctional carbon black engineered cementitious composites for the protection of critical infrastructure. In: Parra-Montesinos GJ, Reinhardt HW and Naaman AE (eds) High Performance Fiber Reinforced Cementitious Composites 6, RILEM, vol. 2, 2012, pp.99-106.

10.1016/j.compositesb.2014.09.037

10.1617/s11527-006-9103-2

Naaman AE. Tensile strain-hardening FRC composites: historical evolution since the 1960. In: Grosse CU (ed.) Advances in Construction Materials. Springer-Verlag Berlin Heidelberg, 2007, pp.181-202.

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

Song J. The change of electrical resistivity of high performance fiber reinforced cementitious composites (HPFRCC) in tension. Master thesis, Sejong University, Korea, 2013, 88pp.

10.1016/S0008-8846(98)00211-7

10.1016/j.compscitech.2008.03.007

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SAGE Publications

Tập 49 Số 29

3621-3634

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