Charge for production of porous filler

FIELD: construction.

SUBSTANCE: charge for production of a porous filler comprises, wt %: montmorillonite clay 82.0-86.0, ground schungite sifted via a net with hole size of 2.5 mm 8.0-10.0, ground wollastonite sifted via a net with a hole size of 2.5 mm 6.0-8.0.

EFFECT: increased strength of a porous filler produced from charge.

1 tbl

 

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

Known mixture for the production of porous filler containing, wt.%: clay 70,0-80,0; crushed shungite 15,0-20,0; waste mineral wool 5,0-10,0 [1].

The objective of the invention is to increase the strength of the porous aggregate.

The technical result is achieved in that the mixture for the production of porous aggregates containing clay, crushed shungite, further comprises the wollastonite in the following ratio, wt.%: clay montmorillonite 82,0-86,0; crushed and sifted through a mesh hole size 2.5 mm shungite 8,0-10,0; crushed and sifted through a mesh hole size 2.5 mm wollastonite 6,0-8,0.

The table below shows the composition of the mixture for the production of porous aggregates.

Table
ComponentsComposition, wt.%
12
Clay montmorillonite86,082,0
Crushed and sifted through a mesh hole size 2.5 mm shungite8,010,0
Crushed and sifted through a mesh hole size 2.5 mm wollastonite6,08,0
Compressive strength, MPa~4~4

In the blend for the production of porous filler use of montmorillonite clay, including Al-montmorillonite and Fe-montmorillonite (nontronite).

Components of the raw material mixture is metered in the required quantities and mix. The resulting mixture is moistened to 18-23% and molded from the pellets of size 20-40 mm, which are dried to a moisture content of not more than 6% and calcined at a temperature of 1050-1150C.

Sources of information

1. SU 1209642 A1, 1986.

The mixture for the production of porous aggregates containing clay, crushed shungite, characterized in that it further comprises the wollastonite in the following ratio, wt.%:



 

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Up!
clay montmorillonite82,0-86,0
crushed and sifted through a mesh hole size 2.5 mm shungite8,0-10,0
crushed and sifted through a mesh hole size 2.5 mm wollastonite6,0-8,0