Practical approach to predict the shear strength of fibre-reinforced clay

Abstract

to 5% carpet waste fibres. The results indicated that carpet waste fibres improve the effective shear stress ratio and 5 deviator stress of the host soil significantly. Addition of 1%, 3% and 5% carpet fibres could improve the effective 6 stress ratio of the unreinforced soil by 17.6%, 53.5% and 70.6%, respectively at an initial effective consolidation 7 stress of 200 kPa. In this study, a nonlinear regression model was developed based on a modified form of the 8 hyperbolic model to predict the relationship between effective shear stress ratio, deviator stress and axial strain of 9 fibre-reinforced soil samples with various fibre contents when subjected to various initial effective consolidation 10 stresses. The proposed model was validated using the published experimental data, with predictions using this model 11 found to be in excellent agreement. 12 13

Discussion of “Compaction and Strength Behavior of Tire Crumbles–Fly Ash Mixed with Clay” by Akash Priyadarshee, Arvind Kumar, Deepak Gupta, and Pankaj Pushkarna

“…Four scenarios consisting of the clay soil with no additives, a desired clay-tire crumbles mixture (no fly ash), a desired clay-fly ash mixture (no tire crumbles), and a desired clay-tire crumbles-fly ash mixture are recommended for the calibration phase. The choice of tire crumbles and fly ash contents are arbitrary; however, from a statistical perspective, median contents are expected to yield a more reliable estimate of the model parameters (Mirzababaei et al 2018).…”

Consistency limits and compaction characteristics of clay soils containing rubber waste

“…The choice of rubber content for the GRC blend would be arbitrary. From a statistical perspective, however, a median rubber content, taken as half the predefined maximum rubber content, is expected to provide a more reliable estimate of η (Mirzababaei et al, 2018). For the present study where R c ≤ 30%, a median rubber content would be 15%.…”

“…natural and synthetic fibres) in the soil regime, thereby engendering a spatial three-dimensional reinforcement network in favour of weaving (or interlocking) the soil grains into a unitary mass of improved mechanical performance (e.g. Estabragh et al, 2016;Mirzababaei et al, 2017Mirzababaei et al, , 2018Soltani et al, 2018a;Tang et al, 2010;Wang et al, 2017). Lately, many developed and developing countries have initiated the transition towards 'sustainable infrastructure', a concept which fosters the beneficial reuse of solid wastes and/or industrial by-products as a replacement for conventional quarried materials (such as sand) and/or stabilisation agents, thereby conserving natural resources as well as reducing the level of greenhouse gas emissions.…”

Performance of Subgrade Soil Blended with Cement and Ethylene Vinyl Acetate

“…A number of procedures and practices have been performed for the stabilization of subgrade of pavements like dewatering and compaction of the soil [1][2][3]. Such practices of stabilization may be accomplished with the help of some traditional and nontraditional stabilizers such that cement, lime, polymers [4][5][6][7][8], fibers and geosynthetics [9][10][11][12][13], and other supplementary requisite depending upon the requirement. e utilization of chemicals in soil is a mean to improve the various characteristics of soils like shear strength, durability, and permeability, particularly of the soil that is harshly treated by the environment [14][15][16].…”