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Behavior of a Sodium Silicate Grouted Sand
The grout used in this study was a N-Sodium Silicate solution, mixed with an organic reactant (dimethyl ester (DME)) at room temperature. Gelling time and syneresis tests were performed on the neat grout with different amounts of organic rectant and the optimum percentage of DME was obtained. Grout mixes with 5, 7, and 9% of DME were injected into medium dense sand with USCS classification of SP (d50 = 0.45 mm). Unconfined compression tests (strain rate=1%/min), and creep tests (stress levels from 25% to 60% of the unconfined compressive strength) were performed on grouted sand with varying grout compositions. The compressive strength of silicate grouted sand (14 days) varied from of 300 to 1900 kPa (41 to 271 psi), and the Young's modulus was in the range of 200 and 500 MPa (29 to 72.5 ksi). Creep failures in grouted sand were observed at various stress levels based on the composition of the grout and a new model is proposed based on current results and other published data. The results from this study are compared to four decades of published data in the literature. Both strength and modulus were in the range of data reported in the literature.
Behavior of a Sodium Silicate Grouted Sand
The grout used in this study was a N-Sodium Silicate solution, mixed with an organic reactant (dimethyl ester (DME)) at room temperature. Gelling time and syneresis tests were performed on the neat grout with different amounts of organic rectant and the optimum percentage of DME was obtained. Grout mixes with 5, 7, and 9% of DME were injected into medium dense sand with USCS classification of SP (d50 = 0.45 mm). Unconfined compression tests (strain rate=1%/min), and creep tests (stress levels from 25% to 60% of the unconfined compressive strength) were performed on grouted sand with varying grout compositions. The compressive strength of silicate grouted sand (14 days) varied from of 300 to 1900 kPa (41 to 271 psi), and the Young's modulus was in the range of 200 and 500 MPa (29 to 72.5 ksi). Creep failures in grouted sand were observed at various stress levels based on the composition of the grout and a new model is proposed based on current results and other published data. The results from this study are compared to four decades of published data in the literature. Both strength and modulus were in the range of data reported in the literature.
Behavior of a Sodium Silicate Grouted Sand
Gonzalez, H. A. (author) / Vipulanandan, C. (author)
Geo-Denver 2007 ; 2007 ; Denver, Colorado, United States
2007-10-14
Conference paper
Electronic Resource
English
Behavior of a Sodium Silicate Grouted Sand
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