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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/6612
Title: Effects of reinforcement on liquefaction resistance of Solani sand
Authors: Maheshwari, Bal Krishna
Singh H.P.
Saran S.
Published in: Journal of Geotechnical and Geoenvironmental Engineering
Abstract: A study on liquefaction resistance of Solani sand reinforced with geogrid sheet, geosynthetic fiber, and natural coir fiber is reported. Tests were carried out on shake table (vibration table) with sand samples prepared at a relative density of 25%, with and without reinforcements. Synthetic geogrid sheets were used in three different combinations of three, four, and five layers. In case of fibers, the percentage of fibers by weight of dry sand were taken as 0.25, 0.50, and 0.75% and mixed randomly with the sand sample. Theliquefaction parameters, such as the maximum pore water pressure (Umax), maximum pore water pressure built-up time, stay time for Umax, and pore water pressure dissipation time were measured corresponding to various levels of accelerations varying from 0.1-0.4 g. Thefrequency of the dynamic load was kept constant at 5 Hz. The liquefaction resistance of sand was evaluated in terms of maximum pore water pressure ratio (ru max). Test results indicated that on inclusion of fibers and geogrid sheets into the sand samples, the ru max decreased. On increasing the fiber content and number of geogrid sheets, ru max decreasedfurther, and this decrease is significant at a small amplitude of excitation. The averageincrease in liquefaction resistance of sand reinforced with synthetic and coir fibers wasfound to be 88 and 91%, respectively, for 0.75% fiber content, whereas for five layers ofgeogrid sheets, this increase was about 31% at 0.1 g acceleration. © 2012 American Society of Civil Engineers.
Citation: Journal of Geotechnical and Geoenvironmental Engineering (2012), 138(7): 831-840
URI: https://doi.org/10.1061/(ASCE)GT.1943-5606.0000645
http://repository.iitr.ac.in/handle/123456789/6612
Issue Date: 2012
Keywords: Coir fiber
Geogrids
Liquefaction resistance
Solani sand
Synthetic fiber
ISSN: 10900241
Author Scopus IDs: 9133580200
57210815898
56983122700
Author Affiliations: Maheshwari, B.K., Dept. of Earthquake Engineering, IIT Roorkee, 247667, India
Singh, H.P., Dept. of Civil Engineering, NERIST, Itanagar, India
Saran, S., Dept. of Earthquake Engineering, IIT Roorkee, 247667, India
Corresponding Author: Maheshwari, B.K.; Dept. of Earthquake Engineering, IIT Roorkee, 247667India; email: bkmahfeq@iitr.ernet.in
Appears in Collections:Journal Publications [EQ]

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