in this paper attempts have been done to create a mortar with relatively high uniaxial compressive strength (ucs), easy casting, high flexibility, instant hardening, low cost and easy availability. the main use of this material is to physically model the mechanical behavior of jointed rock-like blocks. the effect of four parameters such as joint roughness coefficient (jrc), bridge length (l), b...

It is well known that joints or fissures have an important effect on the failure mechanism of natural rocks. Previously, many numerical and experimental papers been carried out to study strength anisotropy characteristics jointed However, few studies nonpersistent rock masses with different persistence, especially for in three dimensions. In present study, a 3D mass inclinations (θ) persistence...

The explosion process of explosives in a borehole applies a very high pressure on its surrounding rock media. This process can initiate and propagate rock fractures, and finally, may result in the rock fragmentation. Rock fragmentation is mainly caused by the propagation of inherent pre-existing fractures of the rock mass and also from the extension of the newly formed cracks within the intact ...

Few researchers have looked at the mechanical characteristics of rocks that are composed numerous layers various kinds rock. Most strata in practical engineering composite strata, and fracture propagation is frequently to blame for mishaps. The digital image correlation method (DIC) acoustic emission (AE) equipment were used observe crack strike strain field changes specimens resemble with a co...

The study of strain effects in thermally-forced rock masses has gathered growing interest from engineering geology researchers the last decade. In this framework, digital photogrammetry and infrared thermography have become two most exploited remote surveying techniques applications because they can provide useful information concerning geomechanical thermal conditions these complex natural sys...