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Aryan Far H. Sherwani

Bio: Aryan Far H. Sherwani is an academic researcher from Soran University. The author has contributed to research in topics: Compressive strength & Ultimate tensile strength. The author has an hindex of 8, co-authored 22 publications receiving 182 citations.

Papers
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Journal ArticleDOI
TL;DR: In this article, the authors focused on the mechanical, fracture and durability characteristics of self-compacting high-strength concrete (SCHSC) containing recycled polypropylene plastic particles (RPPP) with and without silica fume (SF).
Abstract: This study focuses on the mechanical, fracture and durability characteristics of self-compacting high-strength concrete (SCHSC) containing recycled polypropylene plastic particles (RPPP) with and without silica fume (SF). The designation of the two different sets of SCHSC containing plastic particles were used on the basis of a constant water–cementitious substance (w/cm) ratio of 0.32 and a total cementitious materials content of 550 kg/m3. The first set of mixtures included binary cementitious blends of 20% fly ash (FA) and 80% Portland cement (PC). However, the second series of the mixtures incorporated ternary cementitious blends of 20% FA, 10% SF and 70% PC. To produce the concretes, medium size aggregate was replaced with RPPP at five designated percentages of 0%, 10%, 20%, 30% and 40% by volume in both sets of concretes. Totally, 10 mixtures were produced and tested for mechanical, fracture and durability properties such as elastic modulus, compressive and splitting tensile strength, flexural strength, sorptivity, chloride ion permeability, gas permeability and fracture energy. The tests were carried out 28 and 90 days after casting. The test results showed that the use of RPPP significantly improved the fracture and ductility properties, whereas aggravated other measured properties of SCHSCs. However, with the addition of SF all mechanical and durability characteristics remarkably enhanced. The results also demonstrated that SCHSC with compressive strength higher than 70 MPa at 90 days was produced by using RPPP content up to 40% replacement level by total medium aggregate volume, and 10% SF.

84 citations

Journal ArticleDOI
TL;DR: In this article, a comprehensive review was carried out on the influence of recycled plastic fibers (RPFs), recycled carpet fibers (RCFs) and recycled steel fibers (RSFs) on the fresh, mechanical and ductility properties of concrete.
Abstract: Municipal solid waste materials are growing worldwide due to human consumption. Nowadays, a different type of goods on large-scale is produced in the factories which is going to generate numerous amount of solid waste materials in the near future. Therefore, the management of these solid waste materials is a great concern around the world. Inadequate landfill, environmental pollution and its financial burden on relevant authorities, recycling and utilization of waste materials have a significant impact compared to disposing them. Studies have been done to reuse of waste materials as one of the elements of concrete composites. Each of the elements gives the concrete strength; however, the reuse of these wastes not only makes the concrete economical and sustainable, but also helps in decreasing environmental pollution. There are a number of different types of waste materials such as plastics, carpets, steels, tires, glass, and several types of ashes. In this paper, a comprehensive review was carried out on the influence of recycled plastic fibers (RPFs), recycled carpet fibers (RCFs) and recycled steel fibers (RSFs) on the fresh, mechanical and ductility properties of concrete. The previous studies were investigated to highlight the effects of these waste product fibers on the most important concrete properties such as slump, compressive strength, splitting tensile strength, flexural strength, modulus of elasticity, ultrasonic pulse velocity, energy absorption, ductility, and toughness. In this regard, more than 200 published papers were collected, and then the methods of preparation and properties of these recycled fibers (RF) were reviewed and analyzed. Moreover, empirical models using mechanical properties were also developed. As a result, RPFs, RCFs and RSFs could be used safely in concrete composites due to it is satisfactory fresh, physical and mechanical properties.

80 citations

Journal ArticleDOI
TL;DR: In this paper, the authors summarized the current and most recent literatures considering plastic recycling method and the influence of plastic materials on the fresh and mechanical properties of SCC are summarized.
Abstract: Due to manufacturing processes, municipal solid wastes and service industries, huge amount of waste materials are generated. Recently, a considerable growth in the plastic consumption across the globe can be observed. This has caused enormous quantities of plastic-related waste. Producing new materials such as mortar or concrete from recycling of plastic waste (PW) seems to be one of the best solution for disposing of PW since it is considered to be environmentally and economically advantageous. In modern constructions, self-compacting concrete (SCC) is employed as a main cementitious material, which functions complex formworks without mechanical vibrations with high segregation resistance and greater deformability. Reuse of recycled plastic (RP) in SCC mixes can provide an environmentally friendly and sustainable construction material. Therefore, it has been an ongoing topic for several researches, and a large number of studies investigating the properties of SCC comprising waste and RP materials have been conducted.- In this study, the current and most recent literatures considering plastic recycling method and the influence of plastic materials on the fresh and mechanical properties of SCC are summarized. So that a comprehensive review can be provided in which the reviewed studies are categorized into sub groups based on whether they dealt with SCC containing plastic aggregates (PAs) or plastic fibers (PFs). Furthermore, the effect of RP on the fresh and mechanical properties of various self-compacting composites like self-compacting mortar (SCM), self-compacting high strength concrete (SCHSC) and self-compacting light weight concrete (SCLC) have been reviewed to illustrate the differences with normal SCC. The empirical relationships among various mechanical properties were also developed. Based on the obtained results from previous studies, recycled plastic self-compacting concrete (RPSCC) can be used for structural applications due to its satisfactory fresh and mechanical properties. Moreover, this type of concrete is environmentally friendly and sustainable product due to replacing the natural aggregates (NA) with plastic materials.

78 citations

Journal ArticleDOI
TL;DR: In this article, the workability and rheological characteristics of self-compacting high strength concrete (SCHSC) made with recycled polypropylene plastic particles (RPPP) with fly ash (FA) and silica fume (SF) are investigated.
Abstract: Solid waste management can be regarded as one of the major environmental concerns across the globe. Annually, substantial quantities of plastics are produced. The utilization of this waste can result in a variety of huge problems such as health hazards, disposal, and environmental pollution. In this paper, the workability and rheological characteristics of self-compacting high strength concrete (SCHSC) made with recycled polypropylene plastic particles (RPPP) with fly ash (FA) and silica fume (SF) are investigated. The SCHSC was employed by replacing the medium-coarse aggregate (MCA) with five percentages of RPPP contents at 0%, 10%, 20%, 30%, and 40% by volume. The first group of mixtures contained 20% FA and 80% Portland cement (PC). On the other hand, the second group of the mixes made with 20% FA, 10% SF, and 70% PC. To investigate such workability-related properties as slump flow diameter (SFD), T50 slump flow time (SFT), V-funnel flow time (VFT), L-box height ratio (LHR), and L-box T200 and T400 flow times, 10 concrete mixtures were produced and tested. ICAR rheometer in the rheological testing of fresh SCHSCs was used to determine the rheological parameters. For all mixtures, the compressive strength was measured at 28 days. With respect to the experimental results of the current study, the Herschel-Bulkley and modified Bingham models can provide well defined rheological representations for SCHSC with RPPP. The mixtures containing a combination of FA, SF, and RPPP can have better fresh characteristics compared to those without SF. Moreover, all produced SCHSC mixtures can be at a satisfactory level with the limitations required for the fresh properties of SCC.

43 citations

Journal ArticleDOI
TL;DR: In this article, waste glass powder (WGP) was mixed with the soil sample with various percentages: 2.5 %, 5%, 10 %, 15 %, and 25 % by the dry weight of the soil.

40 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, a review paper summarizes the previous studies until 2019, discussing the use of recycled plastic aggregate as fine aggregate in cementitious composites and its impact on physical, mechanical properties and durability.

138 citations

Journal ArticleDOI
TL;DR: This work is focused on providing an overview of available processes for the removal of microplastics from water and also from sediments, and suggests recycling is a good option, and policies might be developed in this direction.

125 citations

Journal ArticleDOI
Yang Lu1, Sihong Liu1, Zhang Yonggan1, Zhuo Li, Xu Lei 
TL;DR: In this article, the effect of adding cement to expansive soil was evaluated by focusing on the water loss, volume change, stress-strain response, unconfined compression strength, resilient modulus and strain at failure after a sequence of freeze-thaw cycles.

97 citations

Journal ArticleDOI
TL;DR: In this article, a comprehensive review was carried out on the influence of recycled plastic fibers (RPFs), recycled carpet fibers (RCFs) and recycled steel fibers (RSFs) on the fresh, mechanical and ductility properties of concrete.
Abstract: Municipal solid waste materials are growing worldwide due to human consumption. Nowadays, a different type of goods on large-scale is produced in the factories which is going to generate numerous amount of solid waste materials in the near future. Therefore, the management of these solid waste materials is a great concern around the world. Inadequate landfill, environmental pollution and its financial burden on relevant authorities, recycling and utilization of waste materials have a significant impact compared to disposing them. Studies have been done to reuse of waste materials as one of the elements of concrete composites. Each of the elements gives the concrete strength; however, the reuse of these wastes not only makes the concrete economical and sustainable, but also helps in decreasing environmental pollution. There are a number of different types of waste materials such as plastics, carpets, steels, tires, glass, and several types of ashes. In this paper, a comprehensive review was carried out on the influence of recycled plastic fibers (RPFs), recycled carpet fibers (RCFs) and recycled steel fibers (RSFs) on the fresh, mechanical and ductility properties of concrete. The previous studies were investigated to highlight the effects of these waste product fibers on the most important concrete properties such as slump, compressive strength, splitting tensile strength, flexural strength, modulus of elasticity, ultrasonic pulse velocity, energy absorption, ductility, and toughness. In this regard, more than 200 published papers were collected, and then the methods of preparation and properties of these recycled fibers (RF) were reviewed and analyzed. Moreover, empirical models using mechanical properties were also developed. As a result, RPFs, RCFs and RSFs could be used safely in concrete composites due to it is satisfactory fresh, physical and mechanical properties.

80 citations

Journal ArticleDOI
01 Dec 2020
TL;DR: In this paper, a range of management methods for the increasingly severe problem of discarded plastics and briefly summarizes the advantages and disadvantages of some methods, lists some examples of more valuable recycled products and materials, and finally puts forward the improvement direction and challenge to solve this problem.
Abstract: Nowadays, plastic products are closely related to human life. While it brings convenience to human beings, there are also great health and environmental threats. Most of the plastic products are polymer compounds obtained by addition polymerization or condensation polymerization. It will cause chronic poisoning to humans if long-term use plastic products are used. In addition, due to the relatively low production cost and short service life of plastic products, a large amount of waste plastics is discarded every year, which causes serious environmental problems. Traditional disposal technologies such as landfill and incineration not only waste a lot of resources but also accompany serious secondary pollution problems. In order to meet the needs of sustainable development and green environmental protection, various recycling methods have been explored for waste plastics, which have been used to develop economic and environmentally friendly value-added products. This paper reviews a range of management methods for the increasingly severe problem of discarded plastics and briefly summarizes the advantages and disadvantages of some methods, lists some examples of more valuable recycled products and materials, and finally puts forward the improvement direction and challenge to solve this problem.

80 citations