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Using natural granite waste precast granite plate successful
Granite is natural for processing ground and wall decoration materials and use stone tombstone. And in the granite quarries and processing plants, the huge amount of granite every day because they were unable to effective use of waste was discarded, a waste of resources. Recently, a company abroad in order to save natural resources, the search for effective utilization of waste granite, with its production of prefabricated synthetic granite success.

First, the ingredients of prefabricated granite panels

1, granite waste

The use of granite waste, first of its smash to a certain size particles. After smashing particles according to the following particle size distribution with a group: the particle size of 1.2 mm from 25 percent to 30 percent, the particle size of 2.5 mm from 25 percent to 30 percent, the particle size of 5 mm from 20% to 30% the particle size of 10 mm from 25 percent to 50 percent. When the group allocated at least should not be less than the above-mentioned three kinds of size particles.

2, water rigid Cementitious Materials

Mandatory water as a cementing material is the use of inorganic curing agent, the best use of high strength, durability, and can effectively curing the granite particles of slag hydration characteristics of hydration can be prepared dense mixtures. Specifically, if the production of prefabricated granite Floor block not only with a cementitious material used by weathering, acid and alkali resistance, wear-resistant properties, and its hardness should be consistent with granite chips. Because different hardness, with diamond abrasive polishing, the surface roughness of their differences, resulting in reflected light uneven impact of the gloss after grinding, also caused particle surface location of the site with Cementitious Materials uneven wear. In order to obtain natural granite with a similar color scheme, in cementing material can be added to an adequate number of coloring materials. In short, cementitious material selected by the following conditions: conservation at room temperature, high strength, compressive strength of 70.0 to 10.0 MPa, flexural strength of 9. MPa; freeze-thaw resistance, good wear resistance; withstand chemical goods erosion, showed good durability, and long-term stability.

Cementitious Materials and water rigid granite particles weight ratio of 1:2 ~ 3.

Second, production technology

To a certain size vertical casting mold, according to the required size distribution of two stainless steel shelves, separated three-tier, in the middle of pouring precast granite formation of the surface layer containing the new waste granite particles pouring mixture, the rest of the bottom two floors pouring No granite formation of the new particles pouring mixture, and then selected two shelves, molding of inter-drying, water conservation, demoulding, Diamond Tool molding block from the Central Office cutting, again Die box with grinding can also set up several of the same size die, die in the two partitions were used in separate three-tier, the one-time production of more such blocks can be prefabricated granite panels.

Third, the production examples

Example 1

1, the mixture ratio

Rigid Cementitious Materials 600 kg Mixing Water 1101 Granite nibs 1800 kg
2, granite nibs ratio%
Particle size 5 mm 50 Particle diameter 2.5 mm 25 Particle diameter 1.2 mm 25
These materials will be placed in the mixer, homogeneous mixture 2 minutes, then join the water and one percent lightfastness agent (water weight), stirring 4 min, mixture, uniform injection mode, the device and destroyed it with vibrated, and then release the water conservation for 14 days, demoulding, Polishing, and measuring the compressive strength, gloss and hardness.

Example 2

1, the mixture ratio

Water rigid Cementitious Materials 800 kg Mixing Water 1291 Granite nibs 1600 kg
2, granite chips with Belgium%
Particle diameter 1.2 mm 25 Particle diameter 2.5 mm 25 Particle diameter 5.0 mm 25 Size 10 mm 25

• CONCLUSION

  From the above, the use of different particle size nibs and natural granite waste water pouring mixed rigid cementitious material molding, can produce hardness, luster, strength, it seems almost natural granite exterior prefabricated synthetic granite panels . This is not only effective use of the natural granite waste, but also reduces the cost of production of granite

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