[1] Pore fluid pressure plays an important role in the frictional strength and stability of tectonic faults. We report on laboratory measurements of porosity changes associated with transient increases in shear velocity during frictional sliding within simulated finegrained quartz fault gouge (d50 = 127 mm). Experiments were conducted in a novel true triaxial pressure vessel using the double-di...

Calcareous sand usually composed of particles carbonite origin relatively weak structure, high void ratio and low grain strength. These sands show different strength dilation behaviour than quartzite due to the existence calcareous material. Several locations on Libyan coasts are containing or with considerable amount material such as broken shells shell fragments. The present study is concerni...

There is an increasing need to determine accurately the strength properties of tendons for an effective ground control on mines and underground structures as well as on modelling simulations. The strength properties of cables, used as cable bolts, have been evaluated mainly by their ultimate tensile strength, as this kind of test can be carried out in the field as well as in the laboratory. Onl...

Electromagnetic forming is a high energy rate forming process. In this process, an electromagnetic Lorentz body force is used for deformation of products. In this article, Electromagnetic forming process was simulated for assembly of parts as an innovative method. In this research work, the effect of important parameters of process such as discharge energy, radius and width of rectangular groov...

In the introduction, we present an overview of previous research on this subject in order to help reader review possible technological solutions regarding joining construction materials. The original presented article concerns results increasing shear strength adhesive joints plastics using various types surface preparation (laser texturing). Laser texturing consists developing by applying geom...

Clay-sulfate rocks are often encountered in engineering projects such as underground construction and waste repositories. The unique combination of clay swelling and chemical transformation of anhydrite into gypsum results in a swelling behavior that cannot be explained using conventional rock mechanics. The goals of this study are: 1) to investigate the strength characteristics of reconstitute...