Use of polymeric fibers to improve the mechanical properties and impact resistance of lightweight SCC

Omar, Ahmed T.; Hassan, Assem A. A.

doi:10.1016/j.conbuildmat.2019.116944

Cited by 20 publications

(3 citation statements)

References 33 publications

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“…On the other hand, the construction industry is also concerned about the brittle nature of concrete, which has low tensile strength and behaves poorly under impact-type loadings [24][25][26], and is looking for improvements in its basic composition leading to amelioration in its energy-absorbing capacity [27][28][29]. Concrete is subjected to many types of impact loading [30], such as concrete pavements for heavy vehicles and aircrafts, concrete dividers and barriers on highways, and structural concrete subjected to explosions [12,31,32].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, there is a growing necessity to introduce advanced solutions to the problem. To improve the ductility and energy absorbing capacity of concrete, the use of fibers in concrete has been reported as an auspi-cious solution by various researchers [28,29,[40][41][42][43]. Omar and Hassan [28] conducted an experimental investigation to improve the impact resistance and mechanical properties of lightweight concrete by the use of polymeric fibers; the study revealed that polypropylene fibers greatly improved the drop weight impact resistance and ductility of the concrete, along with the flexural strength.…”

Section: Introductionmentioning

confidence: 99%

“…To improve the ductility and energy absorbing capacity of concrete, the use of fibers in concrete has been reported as an auspi-cious solution by various researchers [28,29,[40][41][42][43]. Omar and Hassan [28] conducted an experimental investigation to improve the impact resistance and mechanical properties of lightweight concrete by the use of polymeric fibers; the study revealed that polypropylene fibers greatly improved the drop weight impact resistance and ductility of the concrete, along with the flexural strength. Das et al [39] stated that PP fibers play a vital role in the improvement of tensile and flexural strengths of concrete made up of low-strength recycled aggregates when used in limited quantities.…”

Section: Introductionmentioning

confidence: 99%

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Coupled Effect of Polypropylene Fibers and Slag on the Impact Resistance and Mechanical Properties of Concrete

et al. 2022

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The disposal of steel slag leads to the occupation of large land areas, along with many environmental consequences, due to the release of poisonous substances into the water and soil. The use of steel slag in concrete as a sand-replacement material can assist in reducing its impacts on the environment and can be an alternative source of fine aggregates. This is the very first paper that seeks to experimentally investigate the cumulative effect of steel slag and polypropylene fibers, particularly on the impact resistance of concrete. Various concrete mixes were devised by substituting natural sand with steel slag at volumetric replacement ratios of 0%, 10%, 20%, 30%, and 40%, with and without fibers. Polypropylene fibers of 12 mm length were introduced into the steel slag concrete at 0%, 0.5%, and 1.0% by weight of cement as a reinforcing material. Performance evaluation of each mix through extensive experimental testing indicated that the use of steel slag as partial substitution of natural sand, up to a certain optimum replacement level of 30%, considerably improved the compressive strength, flexural strength, and tensile strength of the concrete by 20.4%, 23.8%, and 17.0%, respectively. Furthermore, the addition of polypropylene fibers to the steel slag concrete played a beneficial role in the improvement of strength characteristics, particularly the flexural strength and final drop weight impact energy, which had a maximum rise of 48.1% and 164%, correspondingly. Moreover, integral structure and analytical analyses have also been performed in this study to validate the experimental findings. The results obtained encourage the use of fiber-reinforced steel slag concrete (FRSLC) as a potential impact-resistant material considering the environmental advantages, with the suggested substitution, of an addition ratio of 30% and 1.0% for steel slag and polypropylene fibers, respectively.

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