The multiple beneficial effects of Al₂O₃ nanoparticle addition to cast magnesium based systems (followed by extrusion) were investigated, constituting either: (a) enhanced strength; or (b) simultaneously enhanced strength and ductility of the corresponding magnesium alloys. AZ31 and ZK60A nanocomposites containing Al₂O₃ nanoparticle reinforcement were each fabricated using solidification proces...

Artificial Intelligence (AI) techniques are used for solving the intractable engineering problems. In this study, it is aimed to study the application of artificial bee colony algorithm for predicting the performance of circular diamond saw in sawing of hard rocks. For this purpose, varieties of fourteen types of hard rocks were cut in laboratory using a cutting rig at 5 mm depth of cut, 40 cm/...

This paper presents the findings of a study on solidification/stabilization (S/S) of lead-contaminated soil using ordinary Portland cement (OPC) and rice husk ash (RHA). The effects of varying lead concentrations (in the form of nitrates) in soil samples on the physical properties of their stabilized forms, namely unconfined compressive strength (UCS), setting times of early mixtures and change...

The development of cemented paste backfilling (CPB) technology has made an important contribution to the mining economy. As a kind porous material, pore structure characteristic backfill is strongly correlated its mechanical properties. In this study, CPB specimens were prepared with tailings/cement ratios (T/C ratio) 4, 6, 10 and curing durations 3, 7, 14, 28 days, respectively. Pore structure...

Abstract The uniaxial compressive strength (UCS) represents the of rock. It frequently requires during introductory phase mining projects such as tunneling, rock excavation, blast hole designs, etc. Usually, determination UCS rocks is carrying out in a concerned laboratory. main drawback determining laboratory at least five core samples high-grade quality. Many problems and limitations are asso...

Petrography and physicomechanical properties of alkali granites, alkali quartz syenite, and nepheline syenite from Ambela, NW Pakistan, have been investigated. Whereas the alkali quartz syenite and most of the alkali granites are megaporphyritic, the nepheline syenite and some of the alkali granites are microporphyritic. Their phenocryst shape and size and abundance of groundmass are also diffe...

Magnesium (Mg)/glass microballoons (GMB) metal matrix syntactic foams (1.47-1.67 g/cc) were synthesized using a disintegrated melt deposition (DMD) processing route. Such syntactic foams are of great interest to the scientific community as potential candidate materials for the ever-changing demands in automotive, aerospace, and marine sectors. The synthesized composites were evaluated for their...

The uniaxial compressive strength (UCS) of rock is an essential property material in different relevant applications, such as slope, tunnel construction, and foundation. It takes enormous time effort to obtain the UCS values directly laboratory. Accordingly, indirect determination through conducting several index tests that are easy fast carry out interest importance. This study presents powerf...

Abstract In any underground excavation project, choosing the best technique and careful preliminary assessments of wear costs production rates are crucial aspects to consider. The rate tools, as well frequency tool replacement, deeply affect duration cost‐effectiveness whole project. Among rock‐specific characteristics affecting wear, Cerchar abrasivity index (CAI) uniaxial compressive strength...

This paper deals with the statistical analysis of the uniaxial compressive strength and of the elastic modulus of jointed rock masses under different confining pressures. Properties of the rock masses with different joint fabric, with and without gouge have been considered in the analysis. A large amount of experimental data of jointed rock masses from the literature has been compiled and used ...