Feasibility of concrete mixtures containing cross-linked polyethylene waste materials

Zéhil, Gérard-Philippe; Assaad, Joseph J.

doi:10.1016/j.conbuildmat.2019.07.285

Cited by 54 publications

(27 citation statements)

References 44 publications

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“…The green concrete can be seen as an energy-efficient [42,43], and a technology with lesser environmental impacts. Many polymer matrices like, polyethylene and polypropylene were investigated for use in the field of green composites in recent years.…”

Section: Waste Materials As Aggregate In Concretementioning

confidence: 99%

Green concrete: A review of recent developments

Sivakrishna¹,

Adesina

Awoyera

et al. 2020

Materials Today: Proceedings

139

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So much innovations have ensued in the concrete industry in the last decade, especially in terms of ensuring concrete sustainability and its green initiatives. A call for sustainability is imminent in the industry as the production of ordinary Portland cement (OPC) which is the main binder of concrete contributes about 8% to the world's human-induced carbon dioxide emission. In addition, the production of concrete has posed a huge threat on natural deposits of raw materials. With billions of tons of concrete expected to be produced in the coming years to meet our infrastructure demand, it is critical for other alternatives to be considered for concrete production. Such alternatives mostly fit as partial or total replacement of OPC and aggregates. This paper explored the sustainable advantage of alkali-activated binders, supplementary cementitious materials, and recycled materials as raw materials in concrete. This short review has shown that it is possible to achieve a greener concrete with enhanced properties compared to the conventional concrete with the use of new materials. Also, on the ground of economic importance, the new materials were found to have better performance than the conventional ones.

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Section: Waste Materials As Aggregate In Concretementioning

confidence: 99%

Green concrete: A review of recent developments

Sivakrishna¹,

Adesina

Awoyera

et al. 2020

Materials Today: Proceedings

139

View full text Add to dashboard Cite

show abstract

“…Conversely, studies showed that the reductions in this property were caused by negligible permeability of PAs [67][68][69][70]. Drying shrinkage of concrete was generally found to decrease when substituting NAs aggregates with PAs [27,62,70,71]. This is a consequence of the hydrophobic nature of PAs which do not absorb water, therefore leaving additional free water for cement hydration.…”

Section: Durability Properties and Thermal/fire Performancementioning

confidence: 99%

“…The effects of pre-heating on the mechanical properties of concrete and mortars containing PAs were investigated [70,71,86,87]. Substituting NA with PAs leads to greater reductions in residual compressive strength, which is dependent on the pre-heating temperature level and type of plastic [87].…”

Section: Durability Properties and Thermal/fire Performancementioning

confidence: 99%

Current Sustainable Trends of Using Waste Materials in Concrete—A Decade Review

et al. 2020

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Concrete is the most used construction material in the world. Consequently, the mass extraction of virgin materials required for concrete production causes major environmental impacts. With a focus on promoting sustainability, numerous research studies on incorporating waste materials to replace virgin substances in concrete were undertaken. Despite this vast volume of published literature, systematic research studies on these sustainable concrete mixes that inform various stakeholders on current research trends, future research directions, and marketability options products are seldom conducted. This paper presents a decade review on sustainable concrete with a focus on virgin materials being replaced with waste materials. It aims to inform researchers of current research trends and gaps in the research area of waste material use in concrete. The review also identifies key parameters that restrict the marketability of these sustainable concrete products. The three-step research methodology involves a bibliometric assessment, a key review of selected waste materials, and an interview with a panel of experts focusing on impediments towards the transition of sustainable concrete products into the industry market. Bibliometric assessment was based on 1465 research publications in which five key materials (plastic, glass, fly ash, slag) and construction and demolition waste were selected for the review. The interview was conducted with ten industry experts to discuss the industry limitations in the commercial establishment of materials. The review of existing knowledge and the findings on sustainable concrete presented in this paper provide directions for both research academics and industry stakeholders to systematically focus on sustainable concrete products that are market-ready.

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“…However, response to freezing-thawing of cement-based composites incorporating this waste material has not been studied yet. This program is motivated by the reduced permeability of the concrete, reported by Zéhil and Assad [24], which is caused by the repellent nature of plastic particles. Sieve size [mm] The low wettability is a specific property of contained plastics, which causes the fixation of air bubbles when they are immersed in water, especially in the form of grit.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Use of Crushed Cable Waste as a Substitute of Natural Aggregate in Cement Screed

Reiterman

Lidmila

2021

Buildings

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This research is focused on the utilization of cable waste originating during the recycling of wires as a partial substitution of natural aggregate in cement screed. The main goal of the work performed was to find an optimal level of substitution in terms of freezing–thawing resistance, which is a significant aspect for such type of concrete mixtures. The studied artificial aggregate was gradually dosed in cement screed by 5% in a volume of up to 30% of substitution. The influence of the substitution was also evaluated in terms of compressive strength, flexural strength, bulk density determination, and the ultrasonic pulse method. Gradual substitution led to the reduction of the bulk density and studied mechanical properties due to the considerable air-entraining effect. The utilization of cable waste reduced the value of modulus of elasticity and modified deformation behavior of studied mixtures, which exhibited significant softening during the flexural test. Studied screed mixtures incorporating waste material exhibited slightly lower values of the coefficient of freeze-thaw resistance in comparison with the control mixture, however, the attained values comply with technical requirements.

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Feasibility of concrete mixtures containing cross-linked polyethylene waste materials

Cited by 54 publications

References 44 publications

Green concrete: A review of recent developments

Green concrete: A review of recent developments

Current Sustainable Trends of Using Waste Materials in Concrete—A Decade Review

The Use of Crushed Cable Waste as a Substitute of Natural Aggregate in Cement Screed

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