Effect of cementation on the small-strain parameters of sands

Abstract

Natural cementation affects the properties of soils, the interpretation of in situ and laboratory test results, and the selection of criteria for geotechnical design. In this paper, published experimental studies are reviewed, a microscale analysis is presented of the effect of cementation on small-strain stiffness for distinct stress-cementation histories, and the effect of cementation on small-strain velocity and damping is experimentally studied. Observations include the prevailing effects of cementation over effective stress, the coexistence of frictional and viscous losses, and the effects of decementation when the medium is unloaded from the level of confinement prevailing during cementation.Key words: wave velocity, seismic response, stiffness, damping, sampling effects, loading history.

Centrifuge modeling of offshore wind foundations under earthquake loading

“…Further studies indicated that no liquefaction or lateral flow occurred in the foundation soils [9]. The measurements of dynamic properties of cemented soil by tests including cyclic triaxial, resonant column, and wave propagation methods, as reported by Saxena et al [51,52], Fernandez and Santamarina [22], and Khan et al [35]. The results demonstrated that artificial cementation of hazardous sandy soil can significantly mitigate the seismic-induced damage.…”

Experimental investigation of thermal and mechanical properties of lignin treated silt

“…The longevity of steel structures and concrete elements underground will be reduced in the alkaline environment (Mitchell and Soga, 1976;Perry, 1977;Sherwood, 1993). Moreover, traditionally treated soils also exhibit an excessive brittle performance especially under traffic loading or impact loading (Fernandez and Santamarina, 2001;Okyay and Dias, 2010). To overcome these problems, a new alternative soil stabilizer that improves soils environmentally friendly and maintains sufficiently ductile treated soils must be found.…”

Formation history and physical properties of sediments from the Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope

“…Trends clearly show the transition from stress-controlled to hydrate-controlled stiffness in hydrate-bearing sediments. We fit the data using a theoretical expression initially developed for cemented soils (Fernandez and Santamarina, 2001):…”