Abstract A number of destructive and non-destructive tests were conducted on rock samples collected from various zones in northern Iraq. So far, for Iraqi rocks, few studies have correlated Schmidt hammer rebound ( R ) with both unconfined compressive strength (UCS) Brazilian tensile (BTS). In this study, the objective is to develop a relationship between surface hardness (rebound number) BTS d...

The geological disposal of spent nuclear fuel may represent a good solution after a thorough risk assessment. In Finland and Sweden, the host rock for geological disposal is crystalline rock and the repository is based on the Swedish KBS-3 multi-barrier design. When radionuclides from spent nuclear fuel are potentially released into the bedrock, they are then transported by advection along wate...

The mechanical deterioration of soft rocks under freeze–thaw cycles is caused by the accumulation mesoscopic damage. However, current model for does not adequately consider multiscale correlations, which makes strength calculation results differ greatly from test and cannot fully reveal damage mechanism cycling conditions. In this paper, bond pore ice expansion laws are considered soft-rock uni...

Lecanora muralis was found on the rock along coastal line during the field trip in Jeju island in 2006. Thallus crustose, placodioid, closely adnate, forming orbicular patches; upper surface grayish green, glossy; central lobes areolate, marginal parts plane, edges thin pruinose; lower surface ecorticate; apothecia sessile, lecanorine type, exciple dense and intact when young, and disc plane, b...

Three-dimensional failure analyses of slopes are rather elaborate, and for rock slopes, where the strength is defined by nonlinear envelopes, they particularly intricate. This why many earlier approaches used a linear approximation envelope prior to carrying out stability analysis. avoided in this paper, thanks using parametric form Hoek-Brown criterion. The kinematic approach limit analysis as...

Broadband electromagnetic frequency or time domain sensor techniques present high potential for quantitative water content monitoring in porous media. Prior to in situ application, the impact of the relationship between the broadband electromagnetic properties of the porous material (clay-rock) and the water content on the frequency or time domain sensor response is required. For this purpose, ...