ISSN 2319-5347, ISI Impact Factor: 0.763

VOLUME 03 NO. 04 OCTOBER 2014: 

Title:        Application of sodium silicate-cement grout to enhance the liquefaction resistance and dynamic properties of sandy soil
Authors:    To Anh Vu Phan
Abstract:  The article aims to present an experimental dynamic behavior of grouted sand. Two different base gradations of between the Nos. 4 and 40 sieve sizes (4/40) and between the Nos. 40 and 100 sieve sizes (40/100) were mixed with different ratios. Three different ratios of sodium silicate-cement grout (0%, 7%, 14%), by volume, were permeated to mixed sample. The specimens were allowed to cure after 3 and 14 days. The cyclic triaxial test found that the grouted-sand significantly enhanced the liquefaction resistance. Also, the cyclic stress ratio-grout content relation can be analytically expressed in an exponential function with a highly reliable (R2 greater than equal to e0.96). Resonant column test showed that shear modulus non-linearly decreased as shear strain increased, and increased with increasing the grout content and confining pressure. For damping ratio, the result of grouted sands was greater than
that of non-grouted sand with the amplitude of strain in range of 0.001% and 0.1%; however, with the amplitude of strain greater than 0.1%, result of non-grouted-sand was greater than that of grouted-sand.

Keywords:   Sodium silicate, Cement, Liquefaction resistance, Shear modulus, Damping ratio
Page no:     375-384

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