Bearing capacity of square footing on reinforced pond ash Available to Purchase

This paper presents the ultimate bearing capacity of square footing on pond ash reinforced with a single layer of geotextile reinforcement. The effect of different vital bearing-capacity parameters on the ultimate bearing capacity (q_ru) of square footing on reinforced pond ash has been studied. Parameters considered include depth of the reinforcement layer below the footing (u) and friction ratio (f ▪ ψ/φ_d)—that is, the ratio of the pond ash reinforcement interface friction angle (ψ) to the direct shear friction angle of pond ash (φ_d). The value of u/B (B being the width of footing) corresponding to the maximum ultimate bearing capacity is considered as optimum u/B in the current study. In the present investigation the value of optimum u/B ratio was found to increase with increase in friction ratio (f ). With increase in friction ratio (f ), bearing capacity ratio (BCR_u= (q_ru/q_u) where q_u is the ultimate bearing capacity of square footing, of the same size as that for q_ru, on unreinforced pond ash) increases. In the present investigation BCR_u increases from 1·1180 to 1·4158 with a corresponding increase in friction ratio (f ) of 0·7073 to 0·9230.