Mechanical properties of polypropylene fiber reinforced concrete and the effects of pozzolanic materials

Alhozaimy, Abdulrahman M.; Soroushian, Parviz; Mirza, Faiz A.

doi:10.1016/0958-9465(95)00003-8

Cited by 322 publications

(119 citation statements)

References 5 publications

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“…For the 28-day-old concretes ( Figure 2 and Table 5), the addition of recycled-bottle-PET fibers enhanced the energy absorption and toughness characteristics of the concrete under flexural load only for the 0.18 and 0.30% fiber volume content. This result was expected and is in agreement with results reported in the literature for similar volume fractions (i.e., 0.2-0.5%) of other types of polymeric fibers (e.g., polypropylene) 4,6,7,26,27 . Fraternali et al 10 used PET monofilaments with diameters ranging from 0.12-2.00 mm (1% fiber volume fraction) and observed a 40% increase in fracture toughness (~55 MPa.m 1/2 ).…”

Section: Resultssupporting

confidence: 82%

Mechanical properties of recycled PET fibers in concrete

et al. 2012

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Fiber-reinforced concrete represents the current tendency to apply more efficient crack-resistant concrete. For instance, polyethylene terephthalate (PET) is a polyester polymer obtained from recyclable bottles; it has been widely used to produce fibers to obtain cement-based products with improved properties. Therefore, this paper reports on an experimental study of recycled-bottle-PET fiber-reinforced concrete. Fibers with lengths of 10, 15 and 20 mm and volume fractions of 0.05, 0.18 and 0.30% related to the volume of the concrete were used. Physical and mechanical characterization of the concrete was performed, including the determination of compressive strength, flexural strength, Young's modulus and fracture toughness as well as analysis using mercury intrusion porosimetry (MIP) and scanning electron microscopy (SEM). Flexure and impact tests were performed after 28 and 150 days. No significant effect of the fiber addition on the compressive strength and modulus of elasticity was observed. However, the Young's modulus was observed to decrease as the fiber volume increased. At 28 days, the concrete flexural toughness and impact resistance increased with the presence of PET fibers, except for the 0.05 vol.% sample. However, at 150 days, this improvement was no longer present due to recycled-bottle-PET fiber degradation in the alkaline concrete environment, as visualized by SEM observations. An increase in porosity also has occurred at 365 days for the fiber-reinforced concrete, as determined by MIP.

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Section: Resultssupporting

confidence: 82%

Mechanical properties of recycled PET fibers in concrete

et al. 2012

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“…Polypropylene fibres are capable of improving the ductility of concrete by enhancing properties such as flexural toughness and impact resistance of concrete [6][7].…”

Section: Introductionmentioning

confidence: 99%

Statistical variations in impact resistance of polypropylene fibre-reinforced concrete

Badr

Ashour

Platten

2006

International Journal of Impact Engineering

121

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Impact resistance of polypropylene fibre-reinforced concrete was investigated using the repeated drop weight impact test recommended by ACI Committee 544. The results were analysed based on a statistical approach. The variation in results was examined within the same batch and between different batches. Statistical parameters were compared with reported variations in impact resistance of concrete composites reinforced with other types of fibres such as carbon and steel fibres. Statistical analysis indicated that the results obtained from this test had large variations and it is necessary to increase the number of replications to at least 40 specimens per concrete mix to assure an error below 10%. It is concluded that this test with its current procedures and recommendations should not be considered a reliable impact test. This study has highlighted the need for modifying this test in such a way as that increases its accuracy and reduces the large variation in results.

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“…Previous investigations conclude that strength of concrete increase when the PF mix into concrete admixture as reinforcement [21][22][23][24]. Table 1 shows compressive strength FC with PF is greater than FC without PF.…”

Section: Compressive and Tensile Strengthmentioning

confidence: 86%

Investigation on Impact Resistance Foamed Concrete Reinforced by Polypropylene Fibre

Mujahid¹,

Hadipramana

Samad³

et al. 2013

KEM

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Abstract. Foamed Concrete (FC) needs high strength to prevent dynamic loading, thus it is important to enhance the ductility. Usage the Polypropylene Fibre (PF) examined its contribution in strength of FC on impact resistance. Microstructures were observed that air voids in matrix of FC produce micro-porous that reduce interfacial bonding into matrix and generate micro-crack that may propagation crack growth. Presence of PF in admixture results fibrillation and reduces microcracks. Tensile test was investigated that PF delays crack growth in matrix. In this investigation impact test were conducted using an instrumented drop-weight impact tower. When impactor hits the target surface in free surface condition causes compressive plastic wave transform to be tensile wave. It was affected by tensile strength therefore local effect has not found spalling in crater field. In addition influence of porous in matrix FC has ability to absorb the energy and it was not found distal crack around surface area. Penetration depth results showed FC with PF subjected to impact loading was lower than without FC. Presence of PF increases FC strength and local effect results there was not impression of fragments around distal surface due to brittle crushing.

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Mechanical properties of polypropylene fiber reinforced concrete and the effects of pozzolanic materials

Cited by 322 publications

References 5 publications

Mechanical properties of recycled PET fibers in concrete

Mechanical properties of recycled PET fibers in concrete

Statistical variations in impact resistance of polypropylene fibre-reinforced concrete

Investigation on Impact Resistance Foamed Concrete Reinforced by Polypropylene Fibre

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