Characteristics of mortar and concrete containing fine aggregate manufactured from recycled waste polyethylene terephthalate bottles

Choi, Yun Wang; Moon, Dae Joong; Kim, Yong Jic; Lachemi, Mohamed

doi:10.1016/j.conbuildmat.2009.02.036

Cited by 275 publications

(197 citation statements)

References 13 publications

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“…Like concrete, mortar manufactured with FRCA generally present a lower strength and as a consequence a lesser durability than similar mortar composed of natural sand [22][23][24]. Generally, compressive strength of mortar decreases as the content of FRCA increases.…”

Section: Introductionmentioning

confidence: 99%

Influence of fine recycled concrete aggregates on the properties of mortars

Zhao

Rémond

Damidot

et al. 2015

Construction and Building Materials

238

102

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h i g h l i g h t sInfluences of saturation state of FRCA on the mortars' properties are studied. Mortars made with dried FRCA present larger slump and better mechanical properties. Compressive strength of mortars decreases quasi linearly with substitution rate. Fraction 0/0.63 mm of FRCA has a worse effect on mechanical properties of mortars. a r t i c l e i n f o b s t r a c tFine recycled concrete aggregates (FRCA) also called recycled sand, having particle sizes smaller than 5 mm, are essentially composed of mortar and hardened cement paste. Therefore they induce a large water demand which makes them hard to recycle into mortar and concrete. In this paper, the properties of mortars containing FRCA have been studied, including fresh properties, mechanical properties and interfacial transition zone (ITZ) microstructure.The influence of saturation state of FRCA (dried or saturated) on the properties of mortars of identical compositions has first been studied. The results showed that the slump of mortars containing dried FRCA is always larger than that of mortars containing saturated FRCA. Indeed, in the case of dried FRCA, the theoretical amount of absorbed water is added at the beginning of mixing leading to a temporary increase of the initial efficient W/C ratio and volume of paste, leading to a better workability before its absorption into FRCA. On the contrary, the absorbed water in saturated FRCA is not readily available and thus cannot contribute to increase the initial efficient W/C ratio. Moreover, the compressive strength of mortars containing dried FRCA is always larger than that of mortars made with saturated FRCA, which is attributed to a thinner interfacial transition zone improving its mechanical properties. The influence of the fraction of recycled sand and of the granular class of recycled sand on the mechanical properties of mortars has then been studied with saturated FRCA. The compressive strength of mortars decreases quasi linearly as the replacement percentage of recycled sand increases. Moreover, it is shown that the finer fraction of recycled sand (0/0.63 mm) has the worse effect on the mechanical properties of mortars.

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Section: Introductionmentioning

confidence: 99%

Influence of fine recycled concrete aggregates on the properties of mortars

Zhao

Rémond

Damidot

et al. 2015

Construction and Building Materials

238

102

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“…The decrease in bond strength between PA and cement paste as well as the inhibition of cement hydration due to the hydrophobic nature of plastic are the reasons for the poor mechanical properties of concrete containing plastic. Treating plastic chemically and coating plastics with slag and sand powders can improve the mechanical performance of concrete by improving the interaction between cement paste and PA 14,27,28 . The prolonged curing of PET fibre in simulated cement pore-fluid can initiate the alkaline hydrolysis of PET, and form some organic compounds, which may increase the interaction between plastic aggrgate and cement hydration products 29 .…”

Section: Introductionmentioning

confidence: 99%

Waste polyethylene terephthalate as an aggregate in concrete

Saikia

Brito²

2013

Mat. Res.

169

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This paper reports the strength behaviour of concrete containing three types of recycled polyethylene terephthalate (PET) aggregate. Results are also analysed to determine the PET-aggregate's effect on the relationship between the flexural and splitting tensile strengths and compressive strength and to know whether the relationships between compressive strength and other strength characteristics given in European design codes are applicable to concrete made with PET-aggregates. The compressive strength development of concrete containing all types of PET-aggregate behaves like in conventional concrete, though the incorporation of any type of PET-aggregate significantly lowers the compressive strength of the resulting concrete. The PET-aggregate incorporation improves the toughness behaviour of the resulting concrete. This behaviour is dependent on PET-aggregate's shape and is maximised for concrete containing coarse, flaky PET-aggregate. The splitting tensile and flexural strength characteristics are proportional to the loss in compressive strength of concrete containing plastic aggregates.

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“…In this figure, an excellent correlation could be drawn between these parameters particularly with compressive strength of WG concretes. In this regard, Kou et al [33] also found similar linear relationship for these parameters with the compressive strength, while Choi et al [35] preferred to express this relationship via power equation with (1/3) exponent coefficient. Kou and Poon [5] observed good correlation between these parameters and drew a power relationship between compressive strength and modulus of elasticity for SCC mixtures.…”

Section: Strength Properties the 28-day Compressive Test Results Of mentioning

confidence: 96%

Strengths and Failure Characteristics of Self-Compacting Concrete Containing Recycled Waste Glass Aggregate

AL-Bawi

Kadhim

AL-Kerttani

2017

Advances in Materials Science and Engineering

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The effects of different proportions of green-colored waste glass (WG) cullet on the mechanical and fracture properties of selfcompacting concrete (SCC) were experimentally investigated. Waste bottles were collected, washed, crushed, and sieved to prepare the cullet used in this study. Cullet was incorporated at different percentages (0%, 20%, 40%, 60%, 80%, and 100% by weight) instead of natural fine aggregate (NFA) and/or natural coarse aggregate (NCA). Three SCC series were designed with a constant slump flow of 700 ± 30 mm, total binder content of 570 kg/m 3 and at water-to-binder (w/b) ratio of 0.35. Moreover, fly ash (FA) was used in concrete mixtures at 20% of total binder content. Mechanical aspects such as compressive, splitting tensile, and net flexural strengths and modulus of elasticity of SCC were investigated and experimentally computed at 28 days of age. Moreover, failure characteristics of the concretes were also monitored via three-point bending test on the notched beams. The findings revealed that the mechanical properties as well as fracture parameters were adversely influenced by incorporating of WG cullet. However, highest reduction of compressive strength did not exceed 43% recorded at 100% WG replacement level. Concretes containing WG showed less brittle behavior than reference concrete at any content.

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Characteristics of mortar and concrete containing fine aggregate manufactured from recycled waste polyethylene terephthalate bottles

Cited by 275 publications

References 13 publications

Influence of fine recycled concrete aggregates on the properties of mortars

Influence of fine recycled concrete aggregates on the properties of mortars

Waste polyethylene terephthalate as an aggregate in concrete

Strengths and Failure Characteristics of Self-Compacting Concrete Containing Recycled Waste Glass Aggregate

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