Investigations on the tensile strength of high-performance fiber reinforced concrete using statistical methods

Ramadoss, P.; Nagamani, K.

doi:10.12989/cac.2006.3.6.389

Cited by 18 publications

(8 citation statements)

References 4 publications

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“…On the other hand, to estimate the concrete flexural and tensile strengths from the compressive strength, several empirical relations have been recommended by specific design standards and past research [18][19][20][21][22][23][24][25][26][27][28][29]. Additionally, most of the published empirical relations in use are for plain concrete, while there are limited empirical relations in the literature that could be found for fiber-reinforced concrete [44][45][46]. Information regarding correlations among the mechanical properties of synthetic and steel FRC with different CAMZs is still limited and unclear.…”

Section: Correlations Among Frc Propertiesmentioning

confidence: 99%

Effects of Coarse Aggregate Maximum Size on Synthetic/Steel Fiber Reinforced Concrete Performance with Different Fiber Parameters

et al. 2021

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Recently, fiber has been incorporated into concrete mixtures, where its distribution in the concrete matrix helps to improve and enhance the mechanical properties of fiber-reinforced concrete (FRC). The aim of this study is to investigate the influence of steel and synthetic fiber parameters, along with different coarse aggregate maximum sizes (CAMZs) on FRC performance. Additionally, in past research, the empirical relationships among the compressive, tensile, and flexural strengths of plain concrete and FRC were assessed, and correlations between these mechanical properties of FRC were examined. For each CAMZ, four fiber dosages for each fiber type were considered. The results demonstrate the mechanical properties of FRC enhanced as the fiber length increased from 13 mm to 60 mm, the CAMZ increased from 9.5 mm to 37.5 mm, and the ratio of the fiber length to the CAMZ was in the range of 0.35–5.68. All mixtures have been intended to exhibit similar compressive strengths; however, the synthetic/steel fiber advanced the brittleness ratio of specimens with G10, G19, and G38 to approximately 36.8%, 40.7%, and 47.4% greater than the contral specimens, respectively. In addition, from the regression analysis investigation, there are strong correlations from the regression analysis of the mechanical property results of FRC.

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Section: Correlations Among Frc Propertiesmentioning

confidence: 99%

Effects of Coarse Aggregate Maximum Size on Synthetic/Steel Fiber Reinforced Concrete Performance with Different Fiber Parameters

et al. 2021

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“…SFRC is a composite material produced by the reinforcement of a cementitious matrix in which short-length steel fibers are randomly distributed. Compared with ordinary concrete, the incorporation of steel fibers is receiving growing attention, as it offers many advantages, such as tensile strengths, toughness and durability [ 5 , 6 , 7 , 8 , 9 , 10 ]. SFRC can effectively make up for the defects of concrete, which is easy to crack [ 3 ], improve the mechanical properties of roads and promote the development of the road construction industry.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Fracture Parameters of Concrete

Wang

Gou

2020

Materials

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This study aimed to determine the influence of the volume fraction of steel fibers on the fracture parameters of concrete. Fifty notched steel-fiber-reinforced concrete (SFRC) beams and ordinary concrete beams with 100 mm × 100 mm × 515 mm were cast and tested via a three-point bending test. Among them, the type of steel fiber was the milling type (MF), and the volume fraction of steel fiber added was 0%, 0.5%, 1%, 1.5% and 2%, respectively. The effects of the steel fiber volume fraction (VF) on the critical stress intensity factor (KIC), fracture energy (GF), the deflection at failure(δ0), the critical crack mouth opening displacement (CMODC) and the critical crack tip opening displacement (CTODC) were studied. Through the analysis of test phenomena and test data such as the load-deflection (P-δ) curve, load-crack mouth opening displacement (P-CMOD) curve and load-crack tip opening displacement (P-CTOD) curve, the following conclusions are drawn: with the increase of the steel fiber volume fraction, some fracture parameters increase gradually and maintain a certain linear growth. The gain ratio of the fracture parameters increases significantly, and the gain effect is obvious. Through this law of growth, the experimental statistical formulas of fracture energy and the critical stress intensity factor are summarized.

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“…Since 1960s, cement-based composites reinforced with discontinuous steel fibers (featuring various aspect ratios and fiber geometries) have been extensively studied, developed and popularly adopted in engineering practices (cf. Wafa and Ashour, 1992;Shaaban and Gesund, 1993;Khaloo and Kim, 1996;Song and Hwang, 2004;Ramadoss and Nagamani, 2006;Thomas and Ramaswamy, 2007). From these literatures, it is clear that steel fibers with deformed fiber geometries are more appealing than straight steel fibers.…”

Section: Introductionmentioning

confidence: 99%

Progressive Micromechanical Modeling for Pullout Energy of Hooked-end Steel Fiber in Cement-based Composites

Hui

2010

International Journal of Damage Mechanics

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A progressive micromechanical damage-plasticity formulation is proposed to analyze the single hooked-end steel fiber pullout energy from the surrounding cement-based matrix within the context of hooked-end steel fiber-reinforced cementitious composites (HSFRCC). As the hooked-end steel fiber has a unique fiber geometry, its fiber pullout energy from the cement-based matrix consists of the interfacial fiber-matrix debonding, the frictional sliding and pullout energy, and the elastoplastic deformation energy of the steel fiber hooked end. The aforementioned energy components are analytically derived first, and the superposition principle is subsequently employed to obtain the total energy dissipation during the fiber pullout process. Good agreement is obtained for comparisons between the experimental results of single hooked-end steel fiber pullout tests and the proposed analytical predictions. This satisfactory verification supports the validity and applicability of the proposed damage-plasticity energy prediction formulation, and suggests the applicability of this methodology to further investigation on micromechanical fracture energy prediction of HSFRCC during flexural macro-cracking.

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Investigations on the tensile strength of high-performance fiber reinforced concrete using statistical methods

Cited by 18 publications

References 4 publications

Effects of Coarse Aggregate Maximum Size on Synthetic/Steel Fiber Reinforced Concrete Performance with Different Fiber Parameters

Effects of Coarse Aggregate Maximum Size on Synthetic/Steel Fiber Reinforced Concrete Performance with Different Fiber Parameters

Experimental Study on the Fracture Parameters of Concrete

Progressive Micromechanical Modeling for Pullout Energy of Hooked-end Steel Fiber in Cement-based Composites

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