Effects of PET fiber arrangement and dimensions on mechanical properties of concrete

Marthong, Comingstarful

doi:10.1080/19373260.2015.1014304

Cited by 30 publications

(35 citation statements)

References 15 publications

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“…The results showed that the percentage of increase of rupture strength and impact resistance was 34.27% and 157.14%, respectively, for reinforced concrete compared with plain panels. The influence of PET fibers geometry on the properties of concrete was investigated, Marthong and Sarma [41,42] showed that fiber geometry has a small effect on the workability of concrete but a significant contribution to the mechanical properties of concrete.…”

Section: Introductionmentioning

confidence: 99%

Pet Fiber Reinforced Wet-Mix Shotcrete with Walnut Shell as Replaced Aggregate

2017

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Abstract:In the rapidly developing modern society, many raw materials, such as crushed limestone and river sand, which are limited, are consumed by the concrete industry. Naturally, the usage of waste materials in concrete have become an interesting research area in recent years, which is used to reduce the negative influence of concrete on the environment. Hence, this paper presents the development of a sustainable lightweight wet-mix shotcrete by replacing natural coarse gravel with a kind of byproduct, nut shell (walnut). Fibers made from dumped polyethylene terephthalate (PET) bottles were mixed in the composite to improve the properties of the lightweight wet-mix shotcrete. The initial evaluation of the fresh concrete mixed with different volume fraction of walnut shell was carried out in terms of its performance capacities of mechanical properties (i.e., tensile and compressive strength), pumpability and shootability (i.e., slump, pressure drop per meter and rebound rate) and the results were compared with plain concrete. With increase of walnut shell, compressive and splitting tensile strength of casting concrete decreased, while slump and pressure drop reduced slightly. Additionally, appropriate dosage of walnut shell can improve the shootability of fresh concrete with low rebound rate and larger build-up thickness. In the second series tests, polypropylene (PP) fiber and multi-dimension fiber were also mixed in composite for comparative analysis. After mixing fibers, the splitting tensile strength had obtained marked improvement with slight reduction of compressive strength, along with acceptable fluctuation in terms of pumpability and shootability. Furthermore, relation of density and compressive strength, relation of rebound and density, build-up thickness and relation of compressive and splitting tensile strength were discussed. This study found wet-mix shotcrete incorporating PET fiber with walnut shell of about 35% coarse aggregate replacement could be used for roadway support as lightweight shotcrete per requirements of mine support.

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Section: Introductionmentioning

confidence: 99%

Pet Fiber Reinforced Wet-Mix Shotcrete with Walnut Shell as Replaced Aggregate

2017

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“…In one of the research polyethylene, terephthalate fibers were used to determine the concrete mechanical properties; with the main concern to measure the influence of various dimensions and geometries on the concrete mechanical properties. Marthong's conclusions declare that the workability effected by a very small amount by changing the fibers geometry [12].…”

Section: Introductionmentioning

confidence: 97%

W/C Reduction for Flexural Strengthening of R.C Beams Having Plastic Aggregate

Gul¹,

Tayyab²,

Ullah³

et al. 2019

CEJ

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Due to the greater availability and low biodegradability plastic waste became a great concern for the researchers worldwide, because this waste is one of the main environmental issues. Nowadays harmful industrial waste can be helpful in place of conventional aggregate in concrete mix, which in turn will also save natural resources. A similar effort has been made in this research study for making concrete having replaced percentage of plastic aggregate along with plasticizer and reduced water cement ratio. Total of fifty-seven concrete cylinders and six beams were cast, and after curing period, these were tested for compression and flexural strength respectively. Compression strength decreases by increasing the percentages of plastic aggregates while reducing the w/c, the compression strength increases. The strength of beams in flexure increases by 57% through reduction of W/C from 0.68 (normal concrete/fc'=3000psi) to 0.3, and with further replacement of 40% plastic aggregate the increase in strength as compared to the normal concrete was still 3%.

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“…Use of these waste bottles in any form would be benefitted not only by the prevention of environmental pollutions, but also by energy saving in their disposals. Excellent contribution of PET fibre in enhancing the mechanical properties of concrete has been studied Foti 2011Foti , 2013Fraternali et al 2011;Won et al 2010;Marthong 2015). Most of the authors pointed out that the fibre contents mainly influence the performance of concrete.…”

Section: Introductionmentioning

confidence: 98%

“…At a resin content of 9% strength and durability was nearly unaffected.Partially replacing the NCA by RCA, fly ash added to cement content Drawbacks induced by the use of recycled aggregate in concrete could be minimised with the addition of 25-35% fly ash.Polymer based treatment applied to RCA showed lower absorption and better fragmentation resistance Marthong (2015). PET fibre obtained by hand cutting from consumer PET bottle Slight reduction in the workability of concrete in terms of slump.…”

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confidence: 99%

Enhancing mechanical properties of concrete prepared with coarse recycled aggregates

Marthong

2015

The IES Journal Part A: Civil & Structural Engineering

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The recycling of concrete is an important means to a sustainable material flow. The limited reuse of recycled aggregates is due to the lower quality of concrete production. Various methods have been attempted to minimise the negative effect. In this paper, the effect of adding fly ash as well as incorporating polyethylene terephthalate (PET) fibres in a concrete mix to mitigate the lower quality of recycled aggregates in concrete is presented. The study consists of two stages: in stage 1 the effects on some of the fresh and hardened concrete properties were studied and the percentage replacement of the natural coarse aggregate (NCA) by the recycled coarse aggregate (RCA) was established. From a chosen percentage of 10%, 20%, 30%, 50% and 100%, we found that the 20% replacement (RCA20) did not seem to jeopardise the compressive strength and water absorption of RCA concrete. Experimental studies were further carried out in stage 2 on the improvement on the mechanical properties of RCA20 concrete by incorporating 25% fly ash and 0.5% and 1.0% PET fibre. Beneficial effects of appropriated fly ash and PET fibre content applied on the RCA were obtained.

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Effects of PET fiber arrangement and dimensions on mechanical properties of concrete

Cited by 30 publications

References 15 publications

Pet Fiber Reinforced Wet-Mix Shotcrete with Walnut Shell as Replaced Aggregate

Pet Fiber Reinforced Wet-Mix Shotcrete with Walnut Shell as Replaced Aggregate

W/C Reduction for Flexural Strengthening of R.C Beams Having Plastic Aggregate

Enhancing mechanical properties of concrete prepared with coarse recycled aggregates

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