Impact resistance of high strength chopped basalt fibre-reinforced concrete

Sateshkumar, Sathes Kumar; Awoyera, Paul O.; Kandasamy, Tamilarasan; Nagaraj, Sathishkumar; Ponnusamy, Boopathirasan

doi:10.7764/rdlc.17.2.240

Cited by 15 publications

(8 citation statements)

References 19 publications

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“…The physical properties of the aggregates are shown in Table 1. The procedures for determination of the material properties followed those of the following studies [11][12][13][14]. The water samples were obtained from part of concrete mixing water from three construction sites within Lagos and Ogun state, Nigeria.…”

Section: Methodsmentioning

confidence: 99%

Rheological, Mineralogical and Strength Variability of Concrete due to Construction Water Impurities

Awoyera

Awobayikun

Gobinath

et al. 2020

JERA

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Various national and international standards recommend potable water for mixing concrete; however, the availability of potable water is virtually a daunting task in some developing communities. Concrete workers in such environments tend to utilize any available water for mixing concrete, and this may be detrimental to the quality of the concrete being produced. This study investigates the rheological, mineralogical and strength variability of concrete due to construction water impurities. Water samples were collected from four different construction sites within Southwestern region of Nigeria for production of concrete. The physical and chemical properties of the waters were determined so as to measure their rate of contamination, prior to their use for mixing concrete. The rheological properties of the fresh concrete, compressive strength, split tensile strength, and microscale features of hardened concrete, that were produced with each water sample were determined. From the results, the rheological features of concrete were found not to be affected by water impurities, however, the mechanical test results revealed about 10% reduction in strength between concrete made with water having least and higher concentration of impurities. Also, it was evident from the microscale tests that the water impurities do alter the hydration rate of concrete, which results in strength reduction. The study suggests pretreatment of concrete mixing water before use in order to avoid its damaging effect on concrete life.

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Section: Methodsmentioning

confidence: 99%

Rheological, Mineralogical and Strength Variability of Concrete due to Construction Water Impurities

Awoyera

Awobayikun

Gobinath

et al. 2020

JERA

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show abstract

“…Almost since its appearance, the good impact resistance presented in the Fiber Reinforced Concrete (FRC) has been evident; so much that the ACI 544 Committee (ACI Committee 544, 1999) and many authors (Sateshkumar et al, 2018;Ulzurrun & Zanuy, 2017;Yu, Van Beers, Spiesz, & Brouwers, 2016) has highlight it as one of the main properties of this compound. Nevertheless, the study the impact resistance has great challenges; first, due to this phenomenon complexity, since the stress application occurs in very short time and loads magnitude very variables can be reached; but also, because there is not a widely accepted test method that allows to evaluate the variables affecting the impact resistance of FRC, as the type and content of fibers.…”

Section: Introductionmentioning

confidence: 99%

Compressive resistance level effect on impact performance of fi-ber reinforced concrete

Vivas

2022

rdlc

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impact resistance represents a key property of fiber reinforced concrete (FRC). To study this property, a test method was recently proposed; which consists in repeated drops of a projectile on simply supported prisms, and allows to evaluate FRC behavior both at cracking and after cracking. With the aim of verifying the sensitiveness of this method, this paper analyzes the influence of the compressive strength of the FRC matrix on each parameter of the impact test. Three FRC incorporating 30 kg/m3 of hooked-end steel fibers were prepared, varying the water/cement ratio (0.59, 0.50 and 0.43). It was found that although only small effects on the cracking energy were observed as the concrete compressive strength increases, the post-cracking energy increased in a greater proportion. However, the cracking growth rate, an impact parameter strongly sensitive to the type and content of fibers, remained practically constant for different compressive strength levels.

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“…In latest years, BF gained significant attention as a decent reinforcement tool which originates naturally and besides its low cost, has several mechanical advantages like excellent high temperature performance, high tensile strength and high modulus of elasticity. Aminul Haque et al, 2020;Qin et al, 2018;Fang et al, 2018;Sateshkumar et al, 2018). Also in another study, basalt fibers were used along with steel fibers as hybrid fibers and such usage was found to be successive considering the increase in energy absorption and flexural toughness (Jenifer and Berindha, 2021).…”

Section: Introductionmentioning

confidence: 99%

Effect of silica fume and basalt fibers on the fracture parameters of magnesium phosphate cement incorporating fly ash

Pehlivan

2022

rdlc

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Magnesium phosphate cements are implemented for several purposes demonstrating significant mechanical properties in limited durations. However, brittle behavior of this material needs utmost concern and tensile performance may be enhanced with the proper application of fibers increasing both ductility and energy absorption capacity. This research studies the effect of basalt fibers (BF) and silica fume (SF) on the fracture parameters of magnesium phosphate cement (MPC). MPC mortar mixtures were prepared with different SF (0, 5, 10%) and BF amounts (0, 0.5, 0.75, 1 % by wt.). Also fly ash was adopted with a constant ratio for all mixes. Compressive strength and splitting tensile strength results indicated that addition of SF into mixtures extensively developed the matrix structure and improvements were noted with the increasing SF content. The inclusion of BF enhanced the flexural behavior although there were significant improvements in the fracture energy as well as the double-K parameters. Improvements in the tensile capacity of specimens with high BF were prone to the amount of SF percentage such that inclusion of 1 % BF performed best with 10 % SF added mixtures. Load-CMOD (crack mouth opening displacement) curves obtained from notched three-point tests were given for all specimen series and parameters were calculated according to the double-K criterion. Addition of BF resulted in higher toughness values however presence of SF was very significant in establishing appreciable development in toughness values. Brittleness index was implemented to establish clear conclusions on the findings and best performance was seen for specimens with 10% SF and 1% BF.

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Impact resistance of high strength chopped basalt fibre-reinforced concrete

Cited by 15 publications

References 19 publications

Rheological, Mineralogical and Strength Variability of Concrete due to Construction Water Impurities

Rheological, Mineralogical and Strength Variability of Concrete due to Construction Water Impurities

Compressive resistance level effect on impact performance of fi-ber reinforced concrete

Effect of silica fume and basalt fibers on the fracture parameters of magnesium phosphate cement incorporating fly ash

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