Colby Drilling & Blasting  

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What Is Colby Rock?

COLBY ROCK is the brand of our expansive mortar, it is a highly expansive powder composition for stone breaking, granite and marble quarrying, concrete cutting and demolition.

COLBY ROCK expansive mortar is safe, environment friendly is a good and viable alternative to explosives and other traditional methods of quarrying and demolition.

COLBY ROCK expansive mortar is mixed with clean water and poured into pre-drilled holes on rock and concrete. The diluted COLBY ROCK expansive mortar swells and exerts Significant expansive thrust on the hole-wall, fracturing the wall and splitting the rock across the line of the drill holes.


COLBY ROCK expansive mortar are very easily split and fracture mass rock without producing any noise, vibration, toxic gases or flying debris.

COLBY ROCK expansive mortar is getting increasingly popular in quarrying and demolishing applications. Expansive mortar can be used in a wide range of applications for safe demolition, concrete cutting, rock breaking and marble & granite quarrying. Expansive mortar is particularly used for breaking, cutting or demolishing marble, granite and other natural stones, concrete and reinforced concrete.


1. High range soundless cracking

COLBY ROCK expansive mortar is a soundless, non-explosive and safe demolition agent which is quite

different from ordinary demolition agents such as explosives and dangerous materials. It does not cause any fly rock, noise, ground vibration, gas, dust or any other environmental pollution when used properly. Eliminates dangers & noise potentially caused by blasting or heavy mechanical means.

2. No license required

Using COLBY ROCK expansive mortar does not require a special license unlike explosives, chemicals and so on.

3. Rapid usability

Since rock or concrete previously cracked with COLBY ROCK expansive mortar is easily broken with

breakers etc., the amount of time required for breaking of rock or concrete can be remarkably reduced.

4. Simple to use

COLBY ROCK expansive mortar with a measured quantity of water and poured into the holes. Few minutes after pouring a reaction of hydration is taking place generating heat and crystallizing and expanding while hardening. If hydration takes place under confinement, significant expansive pressure will result, No need for detonator, ignition and professional operator.