Mechanical properties of steel, glass, and hybrid fiber reinforced reactive powder concrete

doi:10.1007/s11709-019-0533-7

Front. Struct. Civ. Eng.

2019, Vol. 13

Issue (4) : 998-1006 https://doi.org/10.1007/s11709-019-0533-7

RESEARCH ARTICLE

Mechanical properties of steel, glass, and hybrid fiber reinforced reactive powder concrete

Atheer H. M. ALGBURI, M. Neaz SHEIKH, Muhammad N. S. HADI(

)

School of Civil, Mining and Environmental Engineering, University of Wollongong, NSW 2522, Australia

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Abstract

This study examines the properties of fiber-reinforced reactive powder concrete (FR-RPC). Steel fibers, glass fibers, and steel-glass hybrid fibers were used to prepare the FR-RPC. The non-fibrous reactive powder concrete (NF-RPC) was prepared as a reference mix. The proportion of fibers by volume for all FR-RPC mixes was 1.5%. Steel fibers of 13 mm length and 0.2 mm diameter were used to prepare the steel fiber-reinforced RPC (SFR-RPC). Glass fibers of 13 mm length and 1.3 mm diameter were used to prepare the glass fiber-reinforced RPC (GFR-RPC). The hybrid fiber-reinforced RPC (HFR-RPC) was prepared by mixing 0.9% steel fibers and 0.6% glass fibers. Compressive strength, axial load-axial deformation behavior, modulus of elasticity, indirect tensile strength, and shear strength of the RPC mixes were investigated. The results showed that SFR-RPC achieved higher compressive strength, indirect tensile strength and shear strength than NF-RPC, GFR-RPC, and HFR-RPC. Although the compressive strengths of GFR-RPC and HFR-RPC were slightly lower than the compressive strength of NF-RPC, the shear strengths of GFR-RPC and HFR-RPC were higher than that of NF-RPC.

Keywords reactive powder concrete steel fiber glass fiber hybrid fiber

Corresponding Author(s): Muhammad N. S. HADI

Just Accepted Date: 22 April 2019 Online First Date: 17 May 2019 Issue Date: 10 July 2019

Cite this article:

Atheer H. M. ALGBURI,M. Neaz SHEIKH,Muhammad N. S. HADI. Mechanical properties of steel, glass, and hybrid fiber reinforced reactive powder concrete[J]. Front. Struct. Civ. Eng., 2019, 13(4): 998-1006.

URL:

https://academic.hep.com.cn/fsce/EN/10.1007/s11709-019-0533-7
https://academic.hep.com.cn/fsce/EN/Y2019/V13/I4/998

Fig.1 Steel and glass fibers

Tab.1 Properties of steel and glass fibers

Fig.2 Flow table test

Fig.3 Test setup for axial load-axial deformation behavior

Fig.4 Test setup for splitting tensile strength

Fig.5 Schematic of the direct shear test

Fig.6 Test setup for shear strength

Fig.7 Age versus compressive strength for NF-RPC

Fig.8 Typical failure modes of NF-RPC and FR-RPC under compressive axial load

mix notation	compressive strength (MPa)	average flow diameter (mm)	modulus of elasticity, E (GPa)	indirect tensile strength, T (MPa)	shear strength, $τ$ (MPa)
NF-RPC	90	200	39	7.6	10
St. Dev.	1.52	-	2.12	0.23	1.41
SFR-RPC	96	190	40	9.9	25
St. Dev.	2.51	-	2.83	0.26	3.05
GFR-RPC	81	180	37	5.7	16
St. Dev.	2.64	-	2.52	0.32	2.30
HFR-RPC	85	185	39	9.1	22
St. Dev.	2.46	-	2.51	0.37	2.64

Tab.2 Experimental mechanical properties of NF-RPC and FR-RPC at 28 days *

Fig.9 Typical axial load-axial deformation behavior of NF-RPC and FR-RPC

Fig.10 Typical stress-strain behavior of NF-RPC and FR-RPC

Fig.11 Typical failure modes of SFR-RPC, GFR-RPC and HFR-RPC under splitting tensile test

Fig.12 Typical failure modes of NF-RPC and FR-RPC under direct shear

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