The best way to break up rock without using explosive materials is by
drilling small boreholes into the rock and pouring an expansive
chemical agent into the holes. These chemicals are called "soundless
chemical demolition agents" or "non-explosive demolition agents." The
process can be done on a small scale with a boulder, or on a large
scale with a massive rock formation. It is controllable by the user,
who decides where to drill the boreholes in order to achieve the
"Soundless chemical demolition agents (SCDAs) have proven to be viable
substitutes for the use of explosives. SCDAs are powdery materials
that will expand considerably when mixed with water. This expansion,
when occurring under confinement, generates significant expansive
pressures. These pressures are sufficient to break up rock and
concrete when the SCDA is confined in a borehole or a series of
boreholes... The SCDA must be mixed with a measured quantity of water
and poured into the boreholes. It will then begin to hydrate,
generating heat and crystallizing while hardening and expanding. If
hydration takes place under confinement, significant expansive
pressure will result. The pressures can be of sufficient magnitude
that, after a period of time, they will fracture the confining
material. Depending on the type of SCDA, significant expansive
pressure may be generated as quickly as within 15 min., or as long as
within 24 hr."
New Technologies: Soundless Chemical Demolition Agents
Below you'll find links to information on three expansive cracking
agents that should meet your needs:
"BRISTAR is a soundless 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
When BRISTAR is mixed with an appropriate quantity of water and poured
into cylindrical holes drilled in rock or concrete, it hardens and
expands. BRISTAR cracks the matter to be demolished which then can be
easily removed with a pick breaker, pneumatic breaker, excavator,
Since demolition by using BRISTAR is based on a fracture due to a
tensile stress, all kinds of rocks and concrete can be cracked and
broken by using BRISTAR when appropriate holes are properly drilled."
Demolition Technologies: Bristar Non-Explosive Demolition Agent
"It starts with the typical demolition process of drilling holes in
rock or concrete, but instead of explosives, FRACT.AGŪ is mixed and
poured into the holes and it expands with a force of over 18,000 psi
overcoming the tensile strength of the rock or concrete.
FRACT.AGŪ expansive mortar:
- Is versatile, it can be used in hole diameters from 1 1/8 " to 3"
which can be keyed to jobsite conditions, depending on the drilling
equipment available and the method of excavation
- Makes mass rock and concrete removal an easier task
- Substantially reduces removal time, saving time and money.
- The Fracturing created by FRACT.AGŪ increases productivity of equipment
- Works in underwater situations.
- Can be used in deep holes when appropriate.
- Is environmentally friendly"
Daigh Company: Fract.AG Expansive Mortar
"Dexpan Non-Explosive Demolition Agent
For Controlled Demolition, Building Remodeling, Reinforced
Concrete Cutting, Rock Breaking, Granite and Marble Quarrying,
>> Amazing Expansive Capability to break Reinforced Concrete, Rock,
Granite, Marble or any material you are working with.
>> Easy to use, just mix with water then fill into holes.
>> Non-Explosive, much safer than explosives, does the job with NO
noise, NO vibration, NO flying rocks, NO toxic gases.
>> Works Efficient and Cost Effective, no Special License, Training
and Equipment needed.
>> Earth friendly product, MSDS (Material Safety Data Sheet) is available."
Archer USA: Dexpan
You can learn more about Dexpan here:
Archer USA: Dexpan Introduction
Google Web Search: "chemical rock splitting"
Google Web Search: "non-explosive demolition"
Goolgle Web Search: "soundless chemical demolition"
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