Physics – Condensed Matter – Materials Science
Scientific paper
2006-07-30
Physics
Condensed Matter
Materials Science
Research paper. 13 pages and 13 figures
Scientific paper
The incidence of cementation processes on the acoustical properties of sands is studied via molecular dynamics simulation techniques. In our simulations, we consider samples with different degrees of compaction and cementing materials with distinct elastic properties. The microstructure of cemented sands is taken into account while adding cement at specific locations within the pores, such as grain-to-grain contacts. Results show that acoustical properties of cemented sands are strongly dependent on the amount of cement, its relative stiffness with respect to the hosting medium, and its location within pores. Simulation results are in good correspondence available experimental data and compare favourably with some theoretical predictions for the sound velocity within a range of cement saturation, porosity and confining pressure.
Garcia Xavier
Medina Ernesto
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