Reuse of waste tyre products as a soil reinforcing material: a critical review

Mistry, Mohit K.; Shukla, Shruti; Solanki, C. H.

doi:10.1007/s11356-021-13522-4

Cited by 14 publications

(12 citation statements)

References 40 publications

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“…It is generally accepted that the addition of (and content increase in) TDA, with constant particle size/shape, leads to a 'leftward-downward' translation of the soil compaction curve (for a given compactive effort), causing notable reductions in the OMC and MDUW parameters [24][25][26]. The TDA material's lower specific gravity (or density) compared with that of the soil solids has been reported to be the primary factor responsible for decreasing the MDUW [15].…”

Section: Governing Mechanisms Controlling the Compactability Of Soil-tda Blendsmentioning

confidence: 99%

“…s /G ST s selected for model development captures the combined effects of TDA content and TDA specific gravity; the latter well-established to vary (i.e., 0.85-1.14 for the present investigation, as outlined in Table 2) depending on the source-tire composition, the adopted tire recycling process, and the TDA particle size/shape [24,26]. The intercept parameters w S opt and γ S dmax represent the OMC and MDUW of the unamended soil, since setting f T = 0 in Equation ( 3) results in G ST s = G S s .…”

Section: The Dependent/input Variable G Smentioning

confidence: 99%

“…Even though the compiled database did not permit a critical investigation of these variables to be performed (i.e., since only a small number of the database soils included compaction results for varying D50 and/or compaction energy levels), it is considered that both D50 and compaction energy would likely have minor effects on βM and βD. As mentioned in Section 4.1, for predominantly sand-sized TDA materials (0.075-4.75 mm), changes in the TDA mean particle size is normally reflected in the TDA specific gravity [24,26]. In other words, the dependent/input variable G s S /G s ST not In addition to fundamental soil properties, the authors speculated that β M and β D may also be related to other variables, such as the TDA mean particle size (or D 50 ) and the imparted compaction energy level.…”

Section: Prediction Models Employing Empirical Reduction Rate Parametersmentioning

confidence: 99%

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Modeling the Compaction Characteristics of Fine-Grained Soils Blended with Tire-Derived Aggregates

2021

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This study aims at modeling the compaction characteristics of fine-grained soils blended with sand-sized (0.075–4.75 mm) recycled tire-derived aggregates (TDAs). Model development and calibration were performed using a large and diverse database of 100 soil–TDA compaction tests (with the TDA-to-soil dry mass ratio ≤ 30%) assembled from the literature. Following a comprehensive statistical analysis, it is demonstrated that the optimum moisture content (OMC) and maximum dry unit weight (MDUW) for soil–TDA blends (across different soil types, TDA particle sizes and compaction energy levels) can be expressed as universal power functions of the OMC and MDUW of the unamended soil, along with the soil to soil–TDA specific gravity ratio. Employing the Bland–Altman analysis, the 95% upper and lower (water content) agreement limits between the predicted and measured OMC values were, respectively, obtained as +1.09% and −1.23%, both of which can be considered negligible for practical applications. For the MDUW predictions, these limits were calculated as +0.67 and −0.71 kN/m3, which (like the OMC) can be deemed acceptable for prediction purposes. Having established the OMC and MDUW of the unamended fine-grained soil, the empirical models proposed in this study offer a practical procedure towards predicting the compaction characteristics of the soil–TDA blends without the hurdles of performing separate laboratory compaction tests, and thus can be employed in practice for preliminary design assessments and/or soil–TDA optimization studies.

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Section: Governing Mechanisms Controlling the Compactability Of Soil-tda Blendsmentioning

confidence: 99%

Section: The Dependent/input Variable G Smentioning

confidence: 99%

Section: Prediction Models Employing Empirical Reduction Rate Parametersmentioning

confidence: 99%

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Modeling the Compaction Characteristics of Fine-Grained Soils Blended with Tire-Derived Aggregates

2021

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“…In addition, once the waste tire storage areas are ignited, it is not possible to extinguish them; ends with an environmental disaster. 4 Although it causes environmental problems, it is possible to obtain economic benefits from waste vehicle tires, considering the demand for renewable energy sources. 5,6 Recycling of waste tires stands out in three ways: mechanical (as material), direct fuel and thermal recovery.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, once the waste tire storage areas are ignited, it is not possible to extinguish them; ends with an environmental disaster. 4…”

Section: Introductionmentioning

confidence: 99%

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Sönmez

Okumuş

Safa

et al. 2022

Energy & Environment

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The worldwide increasing energy demand, interest in alternative energy production and limited resources have made it inevitable to turn to recovering wastes, such as waste tires. Waste tires with annual increase of 2%, corresponding to significant reserves all over the world, brings a serious environmental pollution. In this study, energy recovery was planned considering environmental pollution caused by waste tires and waste cooking oils, both. Accordingly, performance and emission analyzes were carried out using fuels formed by mixing pyrolytic oil obtained from waste tires (WTPO) and biodiesel obtained from waste cooking oil with diesel fuel in a single cylinder engine. The experiments are carried out at 2800 rpm and at full load condition. The findings of engine performance and exhaust emissions were evaluated. While the maximum brake specific fuel consumption (Bsfc) value was determined as 2100 g/kWh for blend fuel of 30% biodiesel and 10% WTPO in diesel fuel, the maximum brake thermal efficiency (Bte) value was determined as 33.541% for P30 fuel. The crank angles yielding maximum in-cylinder pressures approach to top dead center, with increasing biodiesel fraction while keeping WTPO fraction constant. While the increase in the amount of WTPO in the test fuels has an effect on the increase of CO emissions, and increasing biodiesel ratio has reduced the CO emissions. Also the use of biodiesel without WTPO increases NOx emissions slightly, while providing an effective reduction at high WTPO fractions. At low WTPO fractions, biodiesel has reduced HC emissions, while at high WTPO fractions has increased.

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Management of end-of-life tyres in India: current practices, regulatory framework, challenges, and opportunities

Khan,

Shyamal,

Kazmi

2024

J Mater Cycles Waste Manag

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Reuse of waste tyre products as a soil reinforcing material: a critical review

Cited by 14 publications

References 40 publications

Modeling the Compaction Characteristics of Fine-Grained Soils Blended with Tire-Derived Aggregates

Modeling the Compaction Characteristics of Fine-Grained Soils Blended with Tire-Derived Aggregates

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Management of end-of-life tyres in India: current practices, regulatory framework, challenges, and opportunities

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