SU814926A1 - Concrete mix - Google Patents

Description

I

The invention relates to building materials, namely to the composition of the concrete mix, and can be used in mining operations for laying the mined-out spaces of underground mines and mines.

Known concrete mixture Cll FOR laying the open space, including, wt.%:

Portland cement 2-13 Tailors of the processing plant 55-60 A by-product of zinc production 10-15 Waste rock 22-25 close to the proposed technical essence and the achieved result is a concrete mix, including, in wt.%: Lime fluff 5-8 Hammer, baked clay 10 -16 Mining tailings

enterprise76-85

Water is introduced before working consensus C2l.

The disadvantages of the known mixture are low density and relatively high cost of concrete with due to the relatively significant cost of fluff lime.

The purpose of the invention is to increase the flatness and reduce the cost of concrete.

 The goal is achieved by the fact that the concrete mix for laying the worked-out space, including mineral in the ground, ground kilned clay, tailings of the enrichment of tS mining enterprises and water, contains the mineral dust from the electrostatic filters and the sulfite-alcohol bard at the next stage. the ratio of components, wt.%: Cement dust

from electrostatic precipitators 16-24 Hammer baked clay6-9

25 Water 16-18

sulphite-alcohol bard 0,01-0,06

Tailings of enrichment of mountain yudny 30 enterprises Else

The mixture is prepared from cement dust of Belgorod production with a specific surface of 3350 cm / g, calcined while ground to a passage through a sieve with a hole diameter of 0.315 mm clay and enrichment tailings of Lebedinsky mining enterprise with a grain size of 1.12. The chemical composition of the components is given in table. one.

The compositions of the concrete mixture and physico-mechanical indicators of concrete samples are given in table. 2

The proposed concrete mix can be used in those underground mines, near which there are cement plants. The use of the proposed concrete mix allows to reduce the cost of 1 m of the bookmark by 0.4-0.6 rubles and fully utilize the waste of the cement plant, which gives a significant effect.

Table 1

Claims (1)

Concrete mixture for laying the worked out space, including mineral binder, ground fired clay, tailings of mining enterprises and water, which, in view of increasing density and lowering the cost of concrete, it contains cement dust from electrostatic precipitators as a mineral cement and additionally, sulphite-alcohol stillage for the following ratio of components, mass,%: Cement dust from electrostatic precipitators Ground burnt clay Water Sulphite-alcohol bard Mining enrichment tails about 6-9 16-18 0.01-0.06 Rest 16-24