Strength Properties of Recycled Aggregate Concrete Mixed with Polypropylene Fiber

Hong, Seong Uk; Lee, Yong Taeg; Kim, Seung Hun; Baek, Sang Ki; Cho, Young Sang

doi:10.4028/www.scientific.net/amm.147.28

Cited by 7 publications

(3 citation statements)

References 3 publications

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“…Achtemichuk et al [4] studied the strength of original concrete, the replacement rate of recycled aggregate, and the mix proportion of recycled concrete by means of tests. The results of relevant papers show that it is feasible to replace natural aggregate with recycled aggregate, but the increase of interface area caused by old cement on the surface of recycled aggregate and the increase of micro-cracks in the aggregate caused by secondary crushing will lead to poor aggregate performance [5][6][7][8][9][10]. These defects must be paid attention to when studying the performance of recycled concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Mechanical Properties of Recycled Concrete with Artificial Sand

2024

Teh. vjesn.

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With the rapid development of the global construction industry, not only a large amount of construction waste has been derived, but also a growing shortage of natural sand resources emerges. Aiming at the above problems, this study uses waste concrete and artificial sand as recycled coarse and fine aggregates to form a new type of recycled concrete. 135 standard cubes and prismatic test blocks were produced. Concrete mixtures were prepared with recycled concrete aggregate and artificial sand to fully replace natural aggregates. This study investigates the mechanical properties of recycled concrete containing artificial sand and polypropylene fibers. Polypropylene fiber content varied from 0-1.5% by mass. Experimental results showed the addition of fibers enhanced the compressive strength and ductility. The optimum fiber dosage was 0.6% for strength gain. However, elastic modulus decreased with increasing fiber content due to increased porosity. The findings demonstrate the feasibility of recycled concrete with artificial sand and polypropylene fibers as an environmentally-friendly construction material.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Mechanical Properties of Recycled Concrete with Artificial Sand

2024

Teh. vjesn.

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“…Polypropylene fiber (PP fiber) is often utilized in cement and concrete composites to increase the toughness and ductility of the matrix composite owing to its low modulus of elasticity, high strength, outstanding ductility, significant durability performance, and -cost effectiveness [19]. An abundance of earlier research efforts used various PP fiber percentages to investigate the influence of this fiber on a variety of parameters [20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Behavior of Self Compacted Concrete Deep Beams Reinforced With Polypropylene Fibers

Shoeib

Abdel-Ghaffar

Ibrahim

et al. 2023

Engineering Research Journal - Faculty of Engineering (Shoubra)

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Self-compacting concrete (SCC) is one of the most recent high-performance concrete innovations. The behavior of self-compacted concrete deep beams reinforced with polypropylene fibers herein investigated. Within an experimental program comprising thirteen simply supported beams tested to failure. The parameters in perspective are polypropylene fiber ratios (0.0, 0.30, 0.60, and 0.90 %), vertical web reinforcement, and horizontal web reinforcement. Mid-span deflection, cracks, and strains are measured for each specimen. According to the test results, the polypropylene fibers improved the cracking load, ultimate capacity, displacement, and energy absorption of the tested SCC deep beams. A polypropylene fiber content of 0.90 % resulted in the most significant improvement as regards the performance of deep beams. The improvement in ultimate capacity reached a 30% magnitude compared to specimen B1. Test results showed that both vertical and horizontal web reinforcement are effective in enhancing the shear capacity of SCC deep beams. The test results were compared with the ACI design method to show the impact of web reinforcement ratio on deep beam load capacity.

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“…The relevant influence mechanism has deeply explored by scholars [4][5]. To improve the working performance of recycled concrete, some scholars [6][7][8][9][10][11][12][13][14] mixed a certain amount of polypropylene fiber into concrete, and studied the mechanical performance and crack resistance of polypropylene fiber recycled concrete. The results show that the proper addition of polypropylene fiber helps to enhance the compressive and flexural properties, reduce cracking, and improve durability of recycled concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis on Mechanical Performance of Recycled Concrete Made from Polypropylene Fiber and Artificial Sand

Luo¹,

Ma²,

Yang³

2020

ACSM

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This paper aims to disclose the working performance and mechanical performance of recycled concrete made from polypropylene fiber and artificial sand (P-RCAS). Taking fiber content and concrete strength as variables, a total of 90 P-RCAS cubes and prisms were designed and prepared for axial loading tests. The working performance of the P-RCAS was tested, the failure process and failure mode of the specimens were observed, and the compressive strengths of cubs and prisms were measured. Moreover, the authors probed deep into how fiber content affect the working performance and mechanical performance of the P-RCAS. The results show that adding polypropylene fiber into the artificial sand recycled concrete (RCAS) can produce concrete with good workability; the additional fibers help to enhance the compressive strength of RCAS specimens on all strength levels, but the enhancement was insignificantly for specimens on high strength levels. Finally, the test data were used to fit the calculation formulas for fiber content, water-cement ratio, and compressive strength, as well as the relationship between axial compressive strength and cube compressive strength. The research results provide reference for further research and engineering application of the RCAS.

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Strength Properties of Recycled Aggregate Concrete Mixed with Polypropylene Fiber

Cited by 7 publications

References 3 publications

Experimental Study on Mechanical Properties of Recycled Concrete with Artificial Sand

Experimental Study on Mechanical Properties of Recycled Concrete with Artificial Sand

Behavior of Self Compacted Concrete Deep Beams Reinforced With Polypropylene Fibers

Experimental Analysis on Mechanical Performance of Recycled Concrete Made from Polypropylene Fiber and Artificial Sand

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