The effects of polypropylene fibers on the properties
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The effects of polypropylene fibers on the properties .

The effects of polypropylene fibers on the properties of ...

2012-2-1  Polypropylene fibers have hydrophobic levels, which protect them against wetting with cement paste. The hydrophobic nature of polypropylene has no effect on the amount of water needed for concrete,,,. The characteristics of different fibers are listed in Table 1.

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The effects of polypropylene fibers on the properties of ...

2013-9-26  Zeiml et al. mentioned that using polypropylene fibers can im-prove spalling behavior of concrete. The paste fractures are formedwhen the acceleration of water evaporation is more than themovement of concrete emulsion to the surface. Here, the negativepressure is generated in the capillaries through which the concretepaste flows and proportionately the tension stress is formed.

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Effects of Two Polypropylene Fibers on the Properties of ...

Portland cement, crushed stone, sand and superplasticizer were used to obtain a high strength concrete with a low water to binder ratio. A reticular polypropylene fiber and a single polypropylene fiber were used to improve the strength of the high strength concrete, but the effects of the two fibers on the slump and strengths were quite different.

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EFFECTS OF POLYPROPYLENE FIBERS ON PHYSICAL AND

2009-11-13  In this present study, the effects of adding polypropylene fibers on physical and mechanical properties of concretes are investigated. To this end, three concrete mixtures consists of 6 mm, 12 mm and 19 mm polypropylene fibers are made and their physical/ mechanical aspects are studied and compared with control concrete. The results manifest that adding polypropylene fibers increases the

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The Effect of Steel and Polypropylene Fibers on

2019-7-1  addition of steel and polypropylene fibers on the mechanical properties of high-strength concrete (HSC). Straight steel fibers (ST) with a 63mm length and 0.9 mm diameter, and Polypropylene fibers (PP) with a 12-mm length and 0.018 mm diameter

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Effects of Polypropylene Fibers on the Physical and ...

2020-4-16  The viability of using polypropylene fibers (PPF) in concrete was largely studied. Yet, few of the existing research studies investigated the effects of PPF on the properties of concrete containing recycled concrete aggregate (RCA). Mixes with different RCA replacement ratios and different PPF content were designed and tested.

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The effects of polypropylene fibers and rubber particles ...

2011-1-1  Available online at sciencedirect ICM11 The effects of polypropylene fibers and rubber particles on mechanical properties of cement composite containing rice husk ash Ali sadr momtazia, Romina zarshin zanooshb a Associate professor /Faculty of engineering, university of Guilan/Rasht/Iran b Phd student/ Faculty of engineering, university of Guilan/Rasht/Iran Abstract

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Effects of polypropylene twisted bundle fibers on the ...

2015-2-20  In this study, the effects of a new type of non-metallic fiber (polypropylene twisted bundle (PPTB)) on the slump and mechanical properties of oil palm shell (OPS) concrete have been investigated. The results showed that increasing the volume fraction of PPTB fibers, it slightly decreases the workability and density of the concrete. It has found that the compressive strength of OPS

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(PDF) The effects of polypropylene fibers and rubber ...

The effects of polypropylene fibers and rubber particles on the mechanical properties of a cement composite with rice husk ash resulted in lower water absorption values due to the rice husk ash ...

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(PDF) Effects of polypropylene twisted bundle fibers on ...

Yew et al. [24] examined the effects of the twisted-bundle form of polypropylene fibers and found positive enhancement in the properties of oil palm shell concrete. Additionally, Zainal et al. [25 ...

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Effects of Polypropylene Fibers on the Physical and ...

Effects of Polypropylene Fibers on the Physical and Mechanical Properties of Recycled Aggregate Concrete Pierre Matar 1*, Gérard-Philippe Zéhil 2 (1. Lebanese University, Faculty of Engineering ...

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EFFECTS OF POLYPROPYLENE FIBERS ON PHYSICAL AND

2009-11-13  EFFECTS OF POLYPROPYLENE FIBERS ON PHYSICAL AND MECHANICAL PROPERTIES OF CONCRETES M. Najimi, F.M. Farahani and A.R. Pourkhorshidi Concrete Department, Building and Housing Research Centre, Tehran, IRAN ABSTRACT In this present study, the effects of adding polypropylene fibers on physical and mechanical properties of concretes are investigated.

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The Effect of Steel and Polypropylene Fibers on

2019-7-1  addition of steel and polypropylene fibers on the mechanical properties of high-strength concrete (HSC). Straight steel fibers (ST) with a 63mm length and 0.9 mm diameter, and Polypropylene fibers (PP) with a 12-mm length and 0.018 mm diameter

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EFFECT OF POLYPROPYLENE FIBERS ON MECHANICAL

2009-11-13  CD11-002 EFFECT OF POLYPROPYLENE FIBERS ON MECHANICAL AND PHYSICAL PROPERTIES OF MORTARS CONTAINING NANO-SIO2 A. Sadrmomtazi1, A. Fasihi2, A.K. Haghi 3 1Assistant Professor, Dept. of Civil Engg, Faculty of Engg, University of Guilan, Rasht, Iran 2M.S. Student, Dept. of Civil Engg, Faculty of Engg, University of Guilan, Rasht, Iran 3Professor, Dept of

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Effects of Polypropylene Fiber Content on Strength and ...

1.88 times greater than that of polyvinyl alcohol fibers with it. However, other properties of basalt fiber such as slip-hardening coefficient and strength reduction coefficient were worse than polyvinyl alcohol and PE fibers in terms of fiber bridging capacity (Song et al., 2005). By increasing the content of polypropylene fibers

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EFFECT OF POLYPROPYLENE FIBERS ON THE

2014-9-5  addition of polypropylene fibers on the mechanical properties of normal strength concrete is studied. The polypropylene fibers were added at concentration of 0.25, 0.5, 1.0 and 1.5% by volume. Compression, pull-out and bending tests were carried out to determine the mechanical

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The Effects of Annealing Conditions on the Structure and ...

2021-7-31  Table I. Thermal properties of polypropylene fibers. Materials are designated as homopolymer (HPP) or copolymer (CPP) with 0 or 10% relaxation and 110° or 130°C annealing temperature. For CPP fibers, it was observed that the degree of constraint and the annealing temperature have similar effects on E' and tan *.

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(PDF) Effects of polypropylene twisted bundle fibers on ...

Yew et al. [24] examined the effects of the twisted-bundle form of polypropylene fibers and found positive enhancement in the properties of oil palm shell concrete. Additionally, Zainal et al. [25 ...

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Effect of Polypropylene Fiber on the Strength and Dry ...

2021-3-29  Fine coal gangue aggregate (CGA) has a high water absorption, which increases the cracking risk of mortar caused by dry shrinkage. The effects of polypropylene (PP) fiber on the fluidity, strength, dry shrinkage, and cracking of CGA mortar were studied in this paper. The results show that PP fiber reduces the fluidity of CGA mortar, but PP fiber improves compressive and flexural strengths ...

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Synergistic Effects of Polypropylene and Glass Fiber on ...

2020-7-28  To better understand the synergistic effects of combined fibers on mechanical properties and durability of recycled aggregate concrete (RAC), different types of fibers with various lengths and mass ratios were adopted in this study. Experimental investigations were conducted to study the 28-day compressive strength and strength loss after exposed to salt-solution freeze–thaw cycles and the ...

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