Deformation behaviour of rock around a borehole filled with an expansive cement

Abstract EN

The use of commercially available expansive cement as a demolition agent and for rock breakage in populated areas and dimension stone quarries is on the increase.

It is extensively used in Saudi Arabia for rock fracture in urban areas as well as granite and marble quarries.

An attempt is made to study the deformation behaviour and fracture of hard rocks like granite when subjected to a slowly increasing expansive pressure exerted inside a borehole filled with an expansive cement by the measurement of tangential strains at various points around it.

The effect of variation of burden (minimum distance of the hole from the nearest edge) and borehole diameter is also investigated.