The universal type, CRACK.AG 2003 with unique compostion, is a lastest technical inno- vation  and  development  of  SOGA,  which  greatly  improves the production efficiency, simplifies  the  operation  at  the job site, applies to all-weather condition, yields stronger expansive strength and faster reaction with water. It is no need for customers to purchase and store various specifications for  different  temperatures. After repeated  trial tests, the quality properties of CRACK.AG 2003, like performance ratio, consumption ratio, crac- king efficiency and so on, prove to be remarkably good and some are  even  better  than those of traditional products from top international suppliers. It is an  excellent  alternative to the traditional soundless cracking agent.

Advantages

• Cutting blocks of Marble and Granite more economically and cost-effectively than traditional wire-sawing way.
• Easily split and fracture mass rock to isolated small blocks that can be more easily demolished or cutting.
• It can be used to process blocks from Marble and Granite.
• It  can  achieve  maximum  production time, output and efficiency in quarrying and mining In safe condition.
• Labors can be more productive and cost-effective.
• It is ideal for mining of emeralds and other precious stones.
• The shape of blocks in quarry can be controllable.
• Its application to concrete demolition does not cause any damage  to  the  environ- ment of cities.

Items

SOGA  provides  two  types of  SCA (Soundless Cracking Agent): traditional type and universal type.

Four specifications of the traditional type are available on the basis  of  job-site  environ- ment and temperature.

• SCA-1 temperature 20-35^oC
• SCA-2 temperature 10-25^oC
• SCA-3 temperature 5-15^oC
• SCA-4 temperature 5-8^oC

Universal type : CRACK.AG 2003 only.

Application Scope

CRACK.AG can be applied in various situations:

• Granite, marble,  sandstone  CRACK.AG ,  limestone,  quartzite  quarrying  and  cutting
• Rocks pre-splitting, fracture, cut, demolish and removal
• Concrete structures demolition and rocks removal when  explosion  not  allowed
• Fractuconstrcution re and demolition of the concrete buildings and structures
• Rocks cutting for road

Technical Information

Properties
CRACK.AG appears to be grayish white powder and be composed of multi-structured inorganic particles. There is no content of any harmful composition. Factors affecting the expansive pressure of CRACK.AG

• The expansive stress of CRACK.AG reach maximum value in about 24 hours of reaction, however, it still increase afterwards.

• The expansive stress of CRACK.AG would decrease if water ratio increases.

• The expansive stress of CRACK.AG would grow up with rising temperature.

• The expansive stress of CRACK.AG would be higher if the diameter of pre-drilled hole is bigger.

Fracture Mechanism

The rock tensile strength is 4-10 MPa and  concrete  tensile  strength  2-4 MPa.  Mixed with appropriate water and poured into pre-drilled holes in stone or concrete, CRACK.AG starts hydration reaction. The  solid  expansion produced after coagulation and rigidification exerts pressure in the  hole-walls  exceeding  50 MPa  ( (500 kg / cm2), which is far more stronger than the tensile strength of the stone  and  concrete. Therefore the stone or concrete is cut or demolished easily.

The crack time of traditional types take 6-8 hours after  the  completion  of  feeding. The crack time of the universal type of CRACK.AG 2003 can be controlled from 30 minutes to 24 hours by the dose of  inhibitor added  into water. The  speed  of  splitting  is  deter- mined by the reaction speed which is up  to  the  temperature of  the job site. The  higher temperature, the shorter the reaction time.

Packing and storage

CRACK.AG is packed in moisture-proof carton box with 4 plastic bags of 5 kg in each. The net weight is 20 kg. The validity period of CRACK.AG is one year if stored  in  dry place, under constant temperature and without any damage to package.

Safety Precaution

The following warning has to be observed closely when dealing with CRACK.AG

• Safety goggles, dust-proof mask, and rubber gloves and helmet MUST be  worn while preparing, mixing and filling CRACK.AG at all times.
• Plug the holes immediately after filling and cover the holes with  straw  mat. Keep your face away from  the  holes  filled  by  mortar. Stay  away from filled holes at least 3 hours after filling to avoid blow-out shot. Keep people away from job site after filling.
• Prepare clean water and towel at the job site. In  case of contact with  the prod- ucts in your eyes and skin, either in dry or wet form, wash them Immediately with large amounts of cold and clean water without rubbing. Consult doctor quickly.