Utilization of recycled tiles and tyres in stabilization of soils and production of construction materials – a state-of-the-art review
10 Apr 2018-Ksce Journal of Civil Engineering (Korean Society of Civil Engineers)-Vol. 22, Iss: 10, pp 3860-3874
TL;DR: A comprehensive review of the published literature on the use of recycled tyres and tiles to stabilize and enhance soft soils was carried out in this article, where the suitability of recycled tiles and tyres in soil stabilization has been discussed with regard to enhancement of strength and reduction of settlement.
Abstract: Tile waste is found in several forms including manufacturing slurry, manufacturing dust, and solid pieces from cracked, smashed, and rejected tiles at the construction sites. Worn out tyres that are no longer safe to be used by vehicles are either discarded or burned, adversely impacting natural ecosystems. These wastes are non-degradable and have a direct environmental impact. Poor waste management can lead to hazardous pollution, reduced soil fertility, and increased space consumption at disposal sites. The massive and increasing volume of the tile and tyre wastes calls for recycling of the materials for economical reuse, cleaner production, and greener development. One area for beneficial reuse of these waste materials is the improvement of engineering properties in soft soil. Structures on soft soils may experience several forms of damage due to insufficient bearing capacity and excessive settlement. Hence, soil stabilization is often necessary to ensure that the soft soil can meet the engineering requirements for stability. A comprehensive review of the published literature on the use of recycled tyres and tiles to stabilize and enhance soft soils was carried out. The properties of soft soil-waste mixtures such as liquid limit, plastic limit, plasticity index, compaction behaviour, unconfined compressive strength, and California Bearing Ratio have been presented. When used as partial replacement of cement, sand, and aggregate in concrete, the effect of tyre and tile waste on workability, durability, and compressive strength of the concrete has also been presented. Recycled tiles and tyres have been used with or without any other admixtures to sustainably improve the strength and bearing capacity of soil. The suitability of recycled tiles and tyres in soil stabilization has been discussed with regard to enhancement of strength and reduction of settlement. In addition, the beneficial effects of the recycled tiles and tyres, when they partially replace cement, sand or stone in concrete, have been discussed.
Citations
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TL;DR: In this paper, the viability of two types of biopolymer, xanthan gum and guar gum, as environmentally friendly additives for collapsible soil stabilization was explored, and the results revealed that biopolymers decrease maximum dry density and permeability of the collapsed soil.
Abstract: Addition of appropriate additives is considered as one of the most widely used techniques in soil stabilization applications. This study explores the viability of two types of biopolymer, xanthan gum and guar gum, as environmentally friendly additives for collapsible soil stabilization. Compaction, consolidation, permeability, and unconsolidated-undrained triaxial tests were performed in this study to measure the engineering properties of treated soil with different percentages of biopolymer at various curing times. Additionally, scanning electron microscopy (SEM) test was employed to assess the changes on the morphological characteristics of the stabilized soil. The results reveal that biopolymers decrease maximum dry density and permeability of the collapsible soil. The findings also indicate that strain–stress curves are influenced by the amount of biopolymer and curing time. Also, the results of SEM test show the changes in soil morphological characteristics due to the interaction between the biopolymers strings and fine-grained particles of the soil. Generally, the results suggest that xanthan gum and guar gum stabilization play a major role in fine-grained collapsible soil mechanical properties improvement, resulting in an eco-friendly and sustainable substitute to traditional soil additives.
90 citations
TL;DR: In this article, the authors investigated the effect of percentages of DTM on the physical and mechanical properties of marine clay, which included the Atterberg limits, particle-size distribution, compaction, unconfined compressive strength (UCS), and pH.
57 citations
TL;DR: In this article, digital image technology-based unconsolidated-undrained (UU) triaxial shear tests were carried out on loess samples at three fiber lengths (L) and four fiber contents (η).
Abstract: Engineering construction in loess areas often requires improvement of loess. Basalt fiber-reinforced soil due to complexity of material composition often exhibits poorly predictable mechanical behavior. In this study, digital image technology-based unconsolidated-undrained (UU) triaxial shear tests were carried out on loess samples at three fiber lengths (L) and four fiber contents (η). Results prove the improvement of the shear strength of loess by basalt fiber inclusion, which varies in inverted u-shaped pattern with fiber length or fiber content, with the maximum at η = 0.6%, L = 12 mm. Digital Image Technology was employed to analyze the damage characteristics and strain field of the surface of the sample at different loading time. The volumetric strain of the reinforced sample decreases at higher fiber content or fiber length, from shear contraction to dilatancy. The unreinforced sample exhibits a typical brittle failure mode with visible shear band, while plastic failure for reinforced samples with an overall bulging failure mode. A statistical damage constitutive model of fiber-reinforced loess was established with limited parameters calibrated. The rationality of the model was verified by comparisons of measured and calculated stress-strain data.
32 citations
TL;DR: In this paper, a detailed experimental results by incorporation of granulated blast furnace slag (GBFS) and cement to the marine clay was described. But the results showed that GBFS with or without cement can be used as a potential stabilizer for soft marine clay.
Abstract: Marine clay is present along the coastal region all around the world. This soil is highly problematic and unfit to support any engineering structures. They are characterized by high liquid limit, high plasticity index with low shear strength and high compressibility. The primary by-product generated from the ferrous industry is granulated blast furnace slag (GBFS), and CaO present in GBFS acts as a binding agent. This paper describes the detailed experimental results by incorporation of GBFS and cement to the marine clay. Soil was replaced by GBFS in various percentages (10%, 20%, 30%, 40% and 50%) and addition of cement (2%, 4%, 6%, 8% and 10%) in percentage of dry weight of soil. Soil and various mixtures are examined for its geotechnical properties, which include specific gravity, consistency limits, compaction characteristics, unconfined compression strength and strength parameters. From the unconfined compression test results, 40% GBFS replacing the marine clay is concluded as the optimum mix. Improvement in the strength is due to the formation of CSH, CAH, CASH and other cementitious compounds which are observed in SEM and XRD studies. From the investigation, it is concluded that GBFS with or without cement can be used as a potential stabilizer for soft marine clay.
28 citations
27 citations
References
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TL;DR: In this paper, three of the most frequently occurring minerals in clay deposits, namely, kaolinite, montmorillonite and quartz, were subjected to a series of tests.
1,035 citations
TL;DR: In this article, the history, benefits, applications, and possible executive problems of using different types of natural and/or synthetic fibers in soil reinforcement through reference to published scientific data are reviewed.
577 citations
TL;DR: In this article, the effect of waste marble dust (MD) usage as filler material on capillarity properties of self-compact concrete (SCC) is investigated. And the results showed that the workability of fresh SCC has not been affected up to 200 kg/m3 MD content.
301 citations
TL;DR: In this paper, the performance of concrete that contains rubber aggregate made from used tyres (CTA) has been studied since the early 1990s, and the results showed that 5%, 10% and 15% of the volume of natural aggregate (NA) were replaced by aggregate derived from used tires (TA).
284 citations
TL;DR: In this article, the use of waste fiber materials such as scrap tire rubber, polyethylene, and polypropylene fiber for the modification of clayey soils was evaluated and the strength and dynamic behavior of the reinforced soils with randomly included waste fiber material was investigated.
279 citations