The combined effects of waste Polyethylene Terephthalate (PET) particles and pozzolanic materials on the properties of self-compacting concrete

Sadrmomtazi, Ali; Dolati-Milehsara, Sahel; Lotfi-Omran, Omid; Sadeghi‐Nik, Aref

doi:10.1016/j.jclepro.2015.09.107

Cited by 120 publications

(57 citation statements)

References 30 publications

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“…The field of research on the assessment of the application of plastic waste in concrete mixtures has gained popularity in the last few decades. The use of waste plastic bottles [3], waste PVC pipe [4], and shredded and recycled plastic waste [5][6][7][8][9] has been investigated by various researchers. Numerous studies have also been carried out on the usage of scrap rubber in both mortar and concrete [10,11].…”

Section: Introductionmentioning

confidence: 99%

Towards Eco-Flowable Concrete Production

2020

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Environmental concerns have increased due to the amount of unused/expired plastic medical waste generated in hospitals, laboratories, and other healthcare facilities, in addition to the fact that disposing of such wastes with extremely low degradation levels causes them to remain in the environment for extended periods of time. These issues have led researchers to develop more environmentally friendly alternatives for disposing of plastic medical waste in Australia. This study is an attempt to assess the impacts of using expired plastic syringes as fine aggregate on fresh and hardened characteristics of flowable concrete, which might provide a solution to environmental concerns. Six mixtures of flowable concrete with water-to-cement ratios of 0.38 were studied. It was found that using recycled aggregate in up to 20% can improve the workability and increase the V-funnel values of flowable concrete mixtures. However, using waste aggregates in more than 30% caused an inapt flowability. Adding waste aggregate at the 30%–50% replacement level led to a decrease in the L-box ratio. To verify the utility and the efficacy of this experiment, the connections between different rheological test measurements were also compared by implementing the Pearson correlation function. The mechanical properties of the mixes containing recycled aggregates were decreased at the age of seven days; however, at later ages, waste aggregates increased the strength at the 10%–30% replacement levels.

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Section: Introductionmentioning

confidence: 99%

Towards Eco-Flowable Concrete Production

2020

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“…As part of this investigation, the possibilities of considering plastic waste as an aggregate were studied. Few researchers initiated their investigations by shredding available plastic content [20][21][22][23][24][25]. Interestingly, plastic waste proved its efficiency in enhancing fresh properties and strength retention of concrete at low level replacement with aggregates [20,26].…”

Section: Introductionmentioning

confidence: 99%

Rheological and Strength Behavior of Binary Blended SCC Replacing Partial Fine Aggregate with Plastic E-Waste as High Impact Polystyrene

Krishna

Putta

2019

Buildings

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Disposing electronic plastic waste into construction materials is an eco-friendly and energy efficient solution to protect the environment. This work is aimed at enhancing the strength of self-compacting concrete (SCC) replacing sand with electronic waste, namely, High Impact polystyrene (HIPS) plastic granules and cementitious material with fly ash. SCC is designed with the optimized binder content of 497 kg/m3 using Fly Ash (30% by weight of cement) and 0.36 as water-to-binder ratio for all the mixtures. High Impact Polystyrene granules are replaced with sand up to 40% (by volume) at a regular interval of 10%. Rheological behavior is observed with the slump flow test for slump diameter, V-funnel test for flow time, and the L-box test for heights ratio, respectively. Strength behavior is studied by performing split tensile strength, and compressive strength tests after a period of 7, 28, and 90 days, respectively. Both fly ash and HIPS aggregate in addition to SCC up to 30% exhibits a minimal strength reduction with a promising performance in workability. Hence incorporation of both fly ash and HIPS granules up to 30% in SCC is a viable eco-friendly technique, with the beneficial economic impact on the construction industry.

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“…Alqahtani et al have found that resistance to chloride ingress of concrete improves with the addition of plastic aggregates [20]. Admixtures enhance electrical resistance of SCC with plastic waste [21,22]. SCC samples with a higher percentage of polyethylene terephthalate (PET) particles retain a good load-bearing capacity against sulfuric acid attack.…”

Section: Introductionmentioning

confidence: 99%

Effect of Recycled Plastic Granules as a Partial Substitute for Natural Resource Sand on the Durability of SCC

Krishna

Putta

2019

Resources

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This investigation is focused on durability studies of binary blended self-compacting concrete (SCC) with the replacement effect of electronic plastic waste, namely high-impact polystyrene (HIPS) granules as partial sand. In the current investigation, for all the SCC mixes, cement is replaced with pozzolanic material fly ash in the binder content of 497 kg/m3 and an adopted water-to-binder ratio of 0.36. Durability properties such as porosity, water absorption, and sorptivity are assessed for the curing periods of 28 and 90 days on SCC specimens produced with HIPS (0%–40% replacement by volume of sand). Both surface and internal water absorption rates were found to be minimal for SCC with HIPS. Replacement of HIPS up to 30% in SCC exhibited improved trends for all tests results. Reported durability parameter values were within permissible limits and revealed the excellent performance of HIPS in SCC. The optimum durability values can be attributed to the dense microstructure of SCC obtained with the combined effect of HIPS and fly ash. The continuous gradation of aggregates in the matrix reduced porosity due to the spherical shape of HIPS; additionally, the hydrophobicity of HIPS inhibits moisture migration in SCC. The additional benefits of fly ash, such as pozzolanic action and the filler effect at the interfacial transition zone (ITZ) are also major contributions to the long-term performance of durability. Electronic plastic waste replacement for fine aggregates in concrete compensates for the disposal problem and conserves natural sand.

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The combined effects of waste Polyethylene Terephthalate (PET) particles and pozzolanic materials on the properties of self-compacting concrete

Cited by 120 publications

References 30 publications

Towards Eco-Flowable Concrete Production

Towards Eco-Flowable Concrete Production

Rheological and Strength Behavior of Binary Blended SCC Replacing Partial Fine Aggregate with Plastic E-Waste as High Impact Polystyrene

Effect of Recycled Plastic Granules as a Partial Substitute for Natural Resource Sand on the Durability of SCC

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