Solid waste management in developing countries: Reusing of steel slag aggregate in eco-friendly interlocking concrete paving blocks production

Olofinnade, O. M.; Morawo, Ayoyinka; Okedairo, Oluwatomisin; Kim, Boksun

doi:10.1016/j.cscm.2021.e00532

Cited by 28 publications

(25 citation statements)

References 30 publications

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“…DWTS achieves the highest ratio of 1.82 at a 20% fraction compared to the initial value. The decrease in water absorption due to WSF addition is caused by the low tendency of the particles to absorb water as the cement in the paver matrix covers WSF particles [15]. PWTA, EAFA, CKD, and CR exhibited a continuous increase in the water absorption ratio.…”

Section: Density Analysismentioning

confidence: 99%

“…Santos confirmed the blocks use in pedestrian circulation areas owing to the acceptable results obtained for the physical and mechanical properties. Olofinnade et al [15] reported that using crushed waste furnace steel slag for IPB units will conserve the non-renewable resource consumption. These studies were conducted by utilizing inexpensive and abundantly available local waste materials, reducing the environmental footprint [9,16].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Crumb Rubber and Coconut Coir on Strength and Durability Characteristics of Interlocking Paving Blocks

et al. 2022

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Interlocking Paving Blocks (IPB) are, nowadays, a widely used construction material. As a result of the surge in demand for IPBs, alternative materials have been investigated to be used for IPBs. This study investigated the strength and durability characteristics (compressive strength, split tensile strength, density, water absorption, skid resistance, and abrasion resistance) of IPBs in the presence of (waste materials) crumb rubber (CR) and coconut coir fibers (CCF). Both compressive and split tensile strength increased in the presence of CCF to a certain extent. CR-based IPBs showcased an increase in skid resistance that satisfied both SLS 1425 and BS EN 1338 specifications. Abrasion depths of CR-based and CCF-based samples show a comparable increase in values when the respective fraction (CR or CCF) increases. Therefore, this research fills the knowledge gap, highlighting the importance of incorporating waste materials (CR and CCF) for the IPB industry rather than open dumping.

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Section: Density Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Crumb Rubber and Coconut Coir on Strength and Durability Characteristics of Interlocking Paving Blocks

et al. 2022

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“…Steel slag is the main solid waste in steel industry [23]. It is obtained either by processing hot melted metal, scrap and fluxes with lime in a Basis Oxygen Furnace (BOF) or by melting scrap with high electric current in an Electric Arc Furnace (EAF).…”

Section: Introductionmentioning

confidence: 99%

Application of Steel Slag for Degraded Land Remediation

Díaz-Piloñeta

Fernández

Terrados-Cristos

et al. 2022

Land

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Land degradation, and especially acidification, are global issues that need to be addressed. A common practice to correct this problem is the use of lime or chemical fertilisers that involve the extraction of raw materials. This study proposes a more sustainable alternative using Basic Oxygen Furnace (BOF) slag. BOF slag is the main waste from the steel industry that is usually accumulated in landfills, which also implies environmental impacts. In this study, a series of laboratory tests have been carried out to analyse the feasibility of using BOF slag for the reclamation of degraded land. For soil acidification, BOF slag will be analysed as a liming agent. On the other hand, the benefits slag can provide as a nutrient source will be tested. As an added value, pre-treated and untreated slag will be compared. The results of these short-time experiments show how BOF slag could be a sustainable alternative as liming agent and amendment. Its use increased the levels of some micro and macronutrients available for plant growth and improved soil quality. It could, therefore, be a sustainable management practice that makes an important contribution to the circular economy.

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“…Solid waste management is one of the problematic issues the world is currently facing. Inadequate management of plastic waste does not only contaminate the environment, but also, a substantial amount of waste has no specified use and most is disposed of in sanitary landfills or indiscriminately in inappropriate dumps and drainages (which is the case in most developing countries), posing not only a major threat to the environment and public health, but also a huge loss of economic value [12][13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

et al. 2021

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Plastics are ubiquitous in our society and are used in many industries, such as packaging, electronics, the automotive industry, and medical and health sectors, and plastic waste is among the types of waste of higher environmental concern. The increase in the amount of plastic waste produced daily has increased environmental problems, such as pollution by micro-plastics, contamination of the food chain, biodiversity degradation and economic losses. The selective and efficient conversion of plastic waste for applications in environmental remediation, such as by obtaining composites, is a strategy of the scientific community for the recovery of plastic waste. The development of polymeric supports for efficient, sustainable, and low-cost heterogeneous catalysts for the treatment of organic/inorganic contaminants is highly desirable yet still a great challenge; this will be the main focus of this work. Common commercial polymers, like polystyrene, polypropylene, polyethylene therephthalate, polyethylene and polyvinyl chloride, are addressed herein, as are their main physicochemical properties, such as molecular mass, degree of crystallinity and others. Additionally, we discuss the environmental and health risks of plastic debris and the main recycling technologies as well as their issues and environmental impact. The use of nanomaterials raises concerns about toxicity and reinforces the need to apply supports; this means that the recycling of plastics in this way may tackle two issues. Finally, we dissert about the advances in turning plastic waste into support for nanocatalysts for environmental remediation, mainly metal and metal oxide nanoparticles.

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Solid waste management in developing countries: Reusing of steel slag aggregate in eco-friendly interlocking concrete paving blocks production

Cited by 28 publications

References 30 publications

Influence of Crumb Rubber and Coconut Coir on Strength and Durability Characteristics of Interlocking Paving Blocks

Influence of Crumb Rubber and Coconut Coir on Strength and Durability Characteristics of Interlocking Paving Blocks

Application of Steel Slag for Degraded Land Remediation

Conversion of Plastic Waste into Supports for Nanostructured Heterogeneous Catalysts: Application in Environmental Remediation

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