An experimental approach to determine the hole-pressure under expansion load

Non-explosive fracturing of rocks is one of themain rock-breaking methods in hard rockquarries or for the demolition of any concretestructure, and is usually accomplished throughthe use of non-explosive expansion material(NEEM). Although this method of rockbreaking is without noise or vibrations and theentire operation is controllable, safe, and easy,the process is lengthier compare to the blastingmethod. In this method, circular holes aredrilled consecutively in a block of rock withequal length, diameter, and spacing (centre–to-centre distance). Subsequently, the holes arefilled with NEEM in grouted form, which by itsexpansion generates an incremental static loadinto the holes after about two to four hours(Goto