Abstract: This work proposes the methodology to obtain a correlation between particle size of rock material and point load test index (Is 50), in order characterize materials, present mining projects terms resistance. For correct development activities, both open pit (quarries) underground (mines), it is important determine compressive strength rocks, since, through it, geomechanical classifica...

The objective of this work is to establish a relationship between the cutting time in rocks, determining speed and point load strength index test, Is (50), characterize rock terms resistance avoid sending samples laboratories. As first stage, on andesite samples, 5 x 10 cm test tubes were made. After elaboration they subjected cutting, using an electric floor cutter was evaluated. This cut made...

In Norway, crushed rock aggregates are widely used in all layers of pavement infrastructures. Frost heave severely affected the Norwegian road network during cold winters 2009/10 and 2010/11, including newly built roads. 2016, Protection for Roads Railways project (FROST) was set up part to investigate frost susceptibility aggregates. Twenty-three tests were performed on 0–4 mm fraction with ni...

Drilling into a rock massif is energetically extremely consumptive process. Hence the optimization of drilling regime with objective of energy consumption minimization, is very important. Proposed article discusses partial problem of this problem. During the drilling process it is useful to know the drilled rock type, whereas to particular drilled rock needs convenient drilling regime, which is...

Under the influence of continuous external factors (rainfall, earthquakes, construction, etc.), slope rock masses in a stable state can gradually transition to unstable rock, which then collapse. A safety factor identify occurrence failure but cannot rock; thus, it realise quantitative identification latter. In this study, cohesive (CSF) and relatively objective analysis method are proposed eff...