the effects of cementation and the physical properties of grains on the shear behavior of grouted sands are investigated in this paper. the consolidated-undrained triaxial shear behavior of three grouted carbonate sands with different physical properties, including particle size distribution, particle shape and void ratio, was studied. two sands were obtained from the north shores of the persia...

Abstract Biocrusts are biological communities that occupy the soil surface, accumulate organic matter and mineral particles hence strongly affect properties of soils they cover. Moreover, by affecting water repellency, biocrusts may cause a preferential infiltration rainwater, with high impact on formation local pathways, especially for sand dunes. The aim this study is to shed light connection...

Abstract Peat is known as problematic ground with low bearing capacity and extensively high compressibility. Bio-cementation or commonly microbial-induced calcite precipitation (MICP) has been recently introduced a improvement alternative for peat under waterlogged condition. Using isolated bacteria strains P19 P21 from tropical peat, it found that unconfined compression strength (UCS) increase...

An algorithm has been developed for the calculation of the size of the effective structural or skeletal elements whichmake up the solid phase of an unconsolidated or consolidated porous block. It is based on a previously presented algorithm, but it has now been validated on unconsolidated samples and tested on consolidated samples. It also includes a virtual reality representation of the struct...

Focused fluid flow shapes the evolution of marine sedimentary basins by transferring fluids and pressure across geological formations. Vertical conduits may form where localized overpressure breaches a cap rock (permeability barrier) thereby transports overpressured towards shallower reservoirs or surface. Field outcrops an Eocene system at Pobiti Kamani Beloslav Quarry (ca 15 km west Varna, Bu...