Behaviour of model footing on pond ash |
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| Authors: | Ashis Kumar Bera Ambarish Ghosh Amalendu Ghosh |
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| Institution: | (1) Department Civil Engineering, Bengal Engineering and Science University, Shibpur, P.O. Botanical Garden, Howrah, West Bengal, 711 103, India |
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| Abstract: | This paper focuses on the effective utilization of pond ash, as foundation medium. A series of laboratory model tests have
been carried out using square, rectangular and strip footings on pond ash. The effects of dry density, degree of saturation
of pond ash, size and shape of footing on ultimate bearing capacity of shallow foundations are presented in this paper. Local
shear failure of a square footing on pond ash at 37% moisture content (optimum moisture content) is observed up to the values
of dry density 11.20 kN/m3 and general shear failure takes place at the values of dry density 11.48 kN/m3 and 11.70 kN/m3. Effects of degree of saturation on ultimate bearing capacity were studied. Experimental results show that degree of saturation
significantly affects the ultimate bearing capacity of strip footing. The effect of footing length to width ratio (L/B), on increase in ultimate bearing capacity of pond ash, is insignificant for L/B ≥ 10 in case of rectangular footings. The effects of size of footing on ultimate bearing capacity for all shapes of footings
viz., square, rectangular and strip footings are highlighted. |
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| Keywords: | Bearing capacity Degree of saturation Dry density Footing Pond ash |
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