Crude mixture for preparing ceramic gravel

FIELD: chemistry.

SUBSTANCE: crude mixture for making claydite gravel contains the following, wt %: montmorillonite clay 65.0-75.0, andesite powder 15.0-20.0, scrap sheet glass ground until passage through sieve No 014 10.0-15.0.

EFFECT: high strength of the claydite gravel.

1 tbl

 

The invention relates to the production of artificial aggregates for concrete.

Famous raw mix for the production of expanded clay gravel, including, wt.%: clay raw materials 78-97; micronized Supplement (ferrous ciality) 3-22 [1].

The objective of the invention is to increase the strength of expanded clay gravel.

Technical result is achieved by the fact that the raw mix for the production of expanded clay gravel, including clay raw materials and meal Supplement contains as raw clay clay montmorillonite, as an additive - andesite flour and additionally ground to pass through a grid No. 014 battle of sheet glass in the following ratio, wt.%: clay montmorillonite 65,0-75,0; andesite flour 15,0-20,0; ground to pass through a grid No. 014 battle of sheet glass 10,0-15,0.

The following table shows the composition of raw mix for the production of expanded clay gravel.

Table
ComponentsContent, wt.% in compounds
123
Clay montmorillonite 70,075,0
Andesite flour20,0of 17.515,0
Ground to pass through a grid No. 014 battle of sheet glass15,0l2,510,0
Compressive strength, MPa4-4,54-4,54-4,5

In the composition of the raw mix used clay montmorillonite, including Al-montmorillonite and Fe-montmorillonite (nontronite).

The components are metered in the desired quantities and mix. The mixture is moistened to 18-26% and molded from the pellets (fraction 20-40 mm), which is dried and calcined at a temperature of 1100-1150C.

The source of information

1. A.S. No. 11188131 of the USSR, 1985.

Raw mix for the production of expanded clay gravel, raw materials including clay and powdered additive, characterized in that it contains as raw clay clay montmorillonite, as an additive - andesite flour and additionally ground to pass through a grid No. 014 battle of sheet glass in the following ratio, wt.%:

clay montmorillonite65,0-75,0
andesite flour15,0-20,0
ground to pass through
grid No. 014 battle of sheet glass10,0-15,0



 

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