EVALUATION OF UNIFORM DELIVERY OF COLLOIDAL NANO-SILICA STABILIZER TO LIQUEFIABLE SILTY SANDS

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MORADI GH.; SEYEDI SH.

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Journal Paper

Paper Information

Journal: International Journal of Nano Dimension Year:2015 | Volume:6 | Issue:5 (SPECIAL ISSUE FOR NCNC) Page(s): 501-508

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Title

EVALUATION OF UNIFORM DELIVERY OF COLLOIDAL NANO-SILICA STABILIZER TO LIQUEFIABLE SILTY SANDS

Author(s)

MORADI GH. | SEYEDI SH. | Issue Writer Certificate

Keywords

COLLOIDAL NANO-SILICA

EARTHQUAKE

LIQUEFACTION

PHYSICAL MODEL

STABILIZATION

SILTY SAND

Abstract

Liquefaction is one of the most important and complex topics in geotechnical EARTHQUAKE engineering.In recent years, passive site STABILIZATION method has been proposed for non-disruptive mitigation of LIQUEFACTION risk at developed sites susceptible to LIQUEFACTION using COLLOIDAL NANO-SILICA stabilizer. In this research, 4 box models were used to investigate the ability to uniformly deliver COLLOIDAL NANO-SILICA stabilizer to liquefiable loose mixes of sand with variations in silt content from0 to 30%using 5 low-head injection and 2 extraction wells.After delivery was completed the models were cured for 30 days. Then the treated soil was excavated and a few samples were extracted for dynamic loading testing. According to the results, colloidal silica can be delivered uniformly in SILTY SAND formations. With the same conditions, the amount of fine grained soil (silt content) strongly affected delivery time. The passive STABILIZATION method can be appropriate for deposits with up to 20% fine graded silt, a concentration of 5 wt% colloidal silica is expected to be able to effectively mitigate the LIQUEFACTION risk of these deposits. The strains during seismic cyclic loading will probably be less than 3% and little permanent strain should result.

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APA: Copy

MORADI, GH., & SEYEDI, SH.. (2015). EVALUATION OF UNIFORM DELIVERY OF COLLOIDAL NANO-SILICA STABILIZER TO LIQUEFIABLE SILTY SANDS. INTERNATIONAL JOURNAL OF NANO DIMENSION (IJND), 6(5 (SPECIAL ISSUE FOR NCNC)), 501-508. SID. https://sid.ir/paper/322281/en

Vancouver: Copy

MORADI GH., SEYEDI SH.. EVALUATION OF UNIFORM DELIVERY OF COLLOIDAL NANO-SILICA STABILIZER TO LIQUEFIABLE SILTY SANDS. INTERNATIONAL JOURNAL OF NANO DIMENSION (IJND)[Internet]. 2015;6(5 (SPECIAL ISSUE FOR NCNC)):501-508. Available from: https://sid.ir/paper/322281/en

IEEE: Copy

GH. MORADI, and SH. SEYEDI, “EVALUATION OF UNIFORM DELIVERY OF COLLOIDAL NANO-SILICA STABILIZER TO LIQUEFIABLE SILTY SANDS,” INTERNATIONAL JOURNAL OF NANO DIMENSION (IJND), vol. 6, no. 5 (SPECIAL ISSUE FOR NCNC), pp. 501–508, 2015, [Online]. Available: https://sid.ir/paper/322281/en

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