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Triaxial Compression Testing of Microfine Cement Grouted Sands
Unconsolidated-undrained (single and multi-stage) and consolidated-undrained triaxial compression tests with pore water pressure measurement were conducted to evaluate the deformability and shear strength parameters of microfine cement grouted sands. The effects of cement type and gradation, grout water-to-cement ratio (W/C), test type and distance from injection point were investigated. Grouting with microfine cement suspensions improves significantly the stress-strain-strength behavior of sands, the improvement primarily controlled by the W/C ratio of the suspensions, and is, generally, superior to grouting with ordinary cements. Grouting with a thick or a thin suspension (W/C=1 or 3), respectively, increases the initial tangent modulus of the sands by a factor of 13 and 3.5, reduces the strain at failure of the sand by a factor of 7.5 and 1.5 and provides the sand with cohesion of about 1500 kPa and 350 kPa.
Triaxial Compression Testing of Microfine Cement Grouted Sands
Unconsolidated-undrained (single and multi-stage) and consolidated-undrained triaxial compression tests with pore water pressure measurement were conducted to evaluate the deformability and shear strength parameters of microfine cement grouted sands. The effects of cement type and gradation, grout water-to-cement ratio (W/C), test type and distance from injection point were investigated. Grouting with microfine cement suspensions improves significantly the stress-strain-strength behavior of sands, the improvement primarily controlled by the W/C ratio of the suspensions, and is, generally, superior to grouting with ordinary cements. Grouting with a thick or a thin suspension (W/C=1 or 3), respectively, increases the initial tangent modulus of the sands by a factor of 13 and 3.5, reduces the strain at failure of the sand by a factor of 7.5 and 1.5 and provides the sand with cohesion of about 1500 kPa and 350 kPa.
Triaxial Compression Testing of Microfine Cement Grouted Sands
Pantazopoulos, I. A. (author) / Markou, I. N. (author) / Atmatzidis, D. K. (author) / Droudakis, A. I. (author)
Proceedings of the Fourth International Conference on Grouting and Deep Mixing ; 2012 ; New Orleans, Louisiana, United States
Grouting and Deep Mixing 2012 ; 1721-1730
2012-08-17
Conference paper
Electronic Resource
English
Triaxial Compression Testing of Microfine Cement Grouted Sands
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