The effects of silica fume and polypropylene fibers on the impact resistance and mechanical properties of concrete

Nili, Mahmoud; Afroughsabet, Vahid

doi:10.1016/j.conbuildmat.2009.11.025

Cited by 264 publications

(114 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Polypropylene fibers in concrete can be used to reduce spalling and to enhance the residual strength of heated concretes 8 . Mixtures containing between 0.2 to 0.5 vol.% polypropylene fiber were generally characterized by an increase in compressive strength 9 , whereas with 0.5 vol.% fiber, the compressive strength of fibrous specimens at the age of 91 days increased by 15% compared with those of the reference sample.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of recycled PET fibers in concrete

et al. 2012

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

Mechanical properties of recycled PET fibers in concrete

et al. 2012

View full text Add to dashboard Cite

show abstract

“…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: 87%

Investigation on Impact Resistance Foamed Concrete Reinforced by Polypropylene Fibre

Mujahid¹,

Hadipramana

Samad³

et al. 2013

KEM

View full text Add to dashboard Cite

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.

show abstract

“…The inclusion of randomly distributed fibers can enhance the toughness and ductility of concrete [19,20]. Accordingly, based on the data results, the impact resistance of RAC can substantially increase with the addition of randomly distributed fibers.…”

Section: Impact Resistancementioning

confidence: 88%

“…Incorporating different volume ratios of barchip and polypropylene fibers in hybridization formation, such as into the HB1 specimens, is significant in increasing the ductility performance. The capability of fibrous specimens to absorb energy prior to impact loading suggests that the presence of fiber function delays the ultimate failure [9,19,20].…”

Section: Impact Resistancementioning

confidence: 99%

Impact Resistance of Recycled Aggregate Concrete with Single and Hybrid Fibers

Ismail

Ramli

2016

MATEC Web of Conferences

View full text Add to dashboard Cite

Abstract. This paper presents a recycled aggregate concrete (RAC) mix that has been modified by adding treated recycled concrete aggregate (RCA) and various types of fiber-reinforced systems. The effectiveness of these modifications in terms of energy absorption and impact resistance was evaluated and compared with that of the corresponding regular concrete, as well as with unmodified RAC specimens. Results clearly indicate that although modification of the RAC mix with treated RCA significantly enhances the impact resistance of RAC, further diversification with additional fiber, particularly those in hybrid form, can optimize the results.

show abstract

The effects of silica fume and polypropylene fibers on the impact resistance and mechanical properties of concrete

Cited by 264 publications

References 18 publications

Mechanical properties of recycled PET fibers in concrete

Mechanical properties of recycled PET fibers in concrete

Investigation on Impact Resistance Foamed Concrete Reinforced by Polypropylene Fibre

Impact Resistance of Recycled Aggregate Concrete with Single and Hybrid Fibers

Contact Info

Product

Resources

About