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Improvement of soil properties by means of chemical grouting, cement grouting, and cement/fly ash stabilization has been widely used in practical geotechnical applications. Knowledge of dynamic behavior of cemented soil is essential for seismic research and design. A laboratory testing program is conducted for determining the low-strain dynamic properties of artificially cemented soils. The major significances of this research are: 1. Focusing on the effect of confining pressure because confining pressure is one of the most important factors affecting the dynamic properties of cemented soils and directly implies the in-situ depth of soil, which is also significant in a practical grouting project. 2. Defining the “degree of cementation” as a percentage of void space between soil particles occupied by cementing material instead of the percent weight of cementing material to total weight of the soil to be cemented as normally used in previous research. Degree of cementation by volume as defined in this study gives clearer description regarding the soil-cement-void interaction of a cemented sand. 3. Using various types of cementing materials and soils to cover sufficient range of parameters involved in the study. 4. Two methods for preparing cemented sand specimens are developed in compliance with the methods practically used in the field for the testing materials selected in the study (injection method and “mix-compact” method).
Assistant professor, Memphis State University, Memphis, TN
Professor, The University of Michigan, Ann Arbor, MI
Senior research engineer and deputy director of Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing,
Stock #: GTJ10162J