Producing sustainable concrete with plastic waste: A review

Almohana, Abdulaziz Ibrahim; Abdulwahid, Mohanad Yaseen; Galobardes, Isaac; Mushtaq, Jasir; Almojil, Sattam Fahad

doi:10.1016/j.envc.2022.100626

Cited by 33 publications

(14 citation statements)

References 53 publications

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“…Plastic may also be manufactured at significantly lower costs than regular concrete, and because it is lightweight, it can be erected and used more rapidly and with less work. Plastic trash might be viewed as a typical material for making lightweight green concrete, which could be used as a non-structural element in building construction [8]. In general, using plastic aggregates at all curing ages, the comprehensive strength decreased as the waste plastic ratio increased.…”

Section: Lightweight Aggregate Concretementioning

confidence: 99%

“…Rahmani et al, (2013) using polyethylene terephthalate (PET) waste to replace fine aggregate by 5%., found that compresive strength increased by 8.86% when water to cement (w/c) ratio was 0.52, and compresive strength increased by 11.97% when w/c ratio was 0.42. In this context, the validation of the use of recycled waste plastics in concrete production is discussed in detail by Almohana et al, (2022) [8].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Utilizing Polyethylene Terephthalate Waste as a Substitute for Coarse Aggregate in the Production of Lightweight Concrete

Alkhaly¹,

Chandra²,

Widari³

2023

Int. J. Eng. Scie. and Inform. Technology.

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Concrete is a building material that consists of a mixture of aggregate and paste. Normal concrete has a unit weight of 2200 kg/m3 to 2500 kg/m3. In addition to normal concrete, lightweight concrete is also known which has a unit weight of less than 1900 kg/m3. The research was conducted to produce lightweight concrete by using aggregate from polyethylene terephthalate (PET) plastic waste as a substitute for coarse aggregate. This study used 40 cylindrical samples of 150 mm x 300 mm with variations in the use of PET aggregates of 25%, 50%, and 100% of the volume of coarse aggregate. The results show that the use of PET aggregates produces concrete with a decrease in compressive strength of 26%–39% and a decrease in water absorption of 2%–32% from normal concrete. Ultrasonic Pulse Velocity (UPV) testing showed that the concrete with PET aggregates had a lower wave propagation velocity compared to normal concrete. Moreover, Schmidt hammer and splitting tensile test showed that concrete with PET aggregates had lower rebound number and split tensile strength compared to normal concrete. PET substitution percentages of 25% and 50% resulted in unit weights of 2218 kg/m3 and 2102 kg/m3, respectively, which rule out the use of lightweight concrete. However, 100% PET substitution has a unit weight of 1855 kg/m3 with a compressive strength of 14.16 MPa, which can be categorized as moderate structural lightweight aggregate concrete.

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Section: Lightweight Aggregate Concretementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Study on Utilizing Polyethylene Terephthalate Waste as a Substitute for Coarse Aggregate in the Production of Lightweight Concrete

Alkhaly¹,

Chandra²,

Widari³

2023

Int. J. Eng. Scie. and Inform. Technology.

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“…Plastics have become ubiquitous materials used worldwide as, e.g., thin but very tough shopping bags, parts of our cars, elements applied in buildings, and computer components [1]. Although plastics are relatively young materials, they experienced broad usage during the 20th century, and nowadays it is hard to imagine everyday life without them [2]. Plastics, in general, are products that come from the petroleum industry [3].…”

Section: Introductionmentioning

confidence: 99%

“…EPS, in its different densities, is used as an important part of all types of buildings, e.g., family houses, office buildings, shopping malls, etc., and as boards or particulate material (beads) it is a part of buildings' envelopes, floors, roofs, foundations, soffits, etc., due to its low density, impact sound insulation and, in particular, excellent thermal-insulation function [5][6][7]. In its basic form, PS is a solid material that can be modified into an aerated product [2]. Styrene monomers are inflated with suitable gasses, such as pentane and hexane, and as a result, lightweight beads with a closed-cell structure composed of up to 98% air are created [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Waste-Expanded Thermoplastic as a Sustainable Filler for Cement-Based Composites for Greener Construction

Pokorný,

Zárybnická,

Ševčík

et al. 2024

Buildings

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Plastics represent an integral part of our everyday lives, with various functions from packaging materials to insulation layers in our buildings. Pure expanded polystyrene (EPS) is a good example of a fully recyclable material. However, once polluted with other materials or substances, EPS becomes a serious environmental burden. In this work, waste EPS for the production of greener building composites with balanced properties and utility value was investigated. Natural aggregate (2/4 mm) was substituted with corresponding fractions of a thermoplastic alternative in portions of 25, 50, 75, and 100 vol.%. The comprehensive experimental investigation evaluated physical and mechanical properties, heat transport and accumulation, and water absorption characteristics. Due to the uniformly distributed plastic particles in the hardened cement-based matrix, the data revealed an important reduction in the dead weight of produced mortars, which also reduced thermal conductivity by up to 47%. On one hand, lightweight mortars showed partially reduced mechanical resistivity; on the other hand, the EPS bead-modified structure turned out to be effective in liquid water transport reduction.

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“…However, the coefficient of permeability and porosity decreased by 49.30% and 36.32%, respectively. One of the major problems of the environment is plastic waste because it takes a long time to decompose [13]. This makes it challenging for governments and scientists to manage.…”

Section: Introductionmentioning

confidence: 99%

Improving the mechanical behavior of pervious concrete using polypropylene and waste rope fibers

Alkraway,

Shereen,

Salah Nasr

et al. 2024

QJES

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Urbanization has led to the damage of infrastructure due to floods and water accumulation on roads and sidewalks. To address this problem, pervious concrete was designed to drain water smoothly. However, pervious concrete has certain drawbacks, such as brittleness and poor tensile strength. To overcome these shortcomings, it is reinforced with fiber. Polypropylene fibers are commonly used for this purpose. On the other hand, managing waste plastic is a major problem as it has a significant environmental impact and requires large areas for landfills. Waste rope fibers (WRF) are among these wastes. There have been very limited investigations on the use of WRF in pervious concrete. Therefore, this study aims to investigate the effect of polypropylene (PP) fibers and waste rope fibers (WRF) on the mechanical and structural properties of pervious concrete. PP and WRF fibers were added in proportions of 0.25%, 0.5%, and 0.75% by volume of concrete. A range of tests (compressive strength, tensile strength, density, permeability, load-deflection behavior, and ductility) were conducted to evaluate the resulting concrete. The results indicated that although the permeability was decreased by adding fibers, the fibers significantly improved the mechanical and structural properties of pervious concrete. The highest values for compressive strength, splitting tensile strength, and ultimate load were 83.4%, 72.4%, and 89.62% for PP fibers-based mixtures, while they were 49.9%, 41.9%, and 102.83% for mixtures made with WRF at an addition rate of 0.5% for both types of fibers. The results also demonstrated that the existence of fibers improved the ductility of the concrete, which means that WRF can be used successfully in producing eco-friendly pervious concrete with better performance than the control specimen.

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Producing sustainable concrete with plastic waste: A review

Cited by 33 publications

References 53 publications

Experimental Study on Utilizing Polyethylene Terephthalate Waste as a Substitute for Coarse Aggregate in the Production of Lightweight Concrete

Experimental Study on Utilizing Polyethylene Terephthalate Waste as a Substitute for Coarse Aggregate in the Production of Lightweight Concrete

Utilization of Waste-Expanded Thermoplastic as a Sustainable Filler for Cement-Based Composites for Greener Construction

Improving the mechanical behavior of pervious concrete using polypropylene and waste rope fibers

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