SU1458341A1 - Intial composition for producing filler - Google Patents

Abstract

The invention relates to the production of building materials and can be used in the preparation of an aggregate of predominantly cellular autoclaved concrete. To reduce the energy consumption for grinding the mixture while maintaining the physicomechanical properties of concrete, the SF mixture contains, in%, silica: a material containing silica, such as quartz sand and a zolopshak mixture 20–90p vitreous rock from the group of liparite, liparite porphyry, trachiliparite, tra chiliparite porphyry. 10-80. The grindability of the mixture when grinding on the specific surface 200 is 0.030-0.047 t / kWh, the grinding time is 14-23 minutes, and the wear is fine. it is 1.3 wt.%. The content of cream negel in the mixture after grinding was The dose is 0.83-1.16 mg / g. From the aggregate, cellular concrete with a density of 800 kg / m 3 is obtained. and strength of 5.4-7.8 MPa. Se

Description

i.

The invention relates to the production of building materials and can be used to produce a core of predominantly cellular autoclaved concrete.

The purpose of the invention is to reduce the energy consumption for grinding the mixture while maintaining the physico-mechanical properties

concrete.

The raw material mixture for obtaining the aggregate of predominantly cellular concrete of autoclaved hardening contains, in wt%, cremiezeme-containing material, for example, quartz sand and zopot of slag mixture 20-90, vitreous rock from the group of liparite, lipite porphyry, trachiliparite, traphyliparite porphyry 10-80 .

The average chemical composition of vitreous rocks and their mineral composition, of which these rocks are composed, are presented in Tables 1 and 2.

Silica aggregate for cellular concrete is produced by joint grinding of silica material — silica sand or ash – slag mixture of TPP, and the alkaline component — either liparite, or liparite porphyry, or trachiliparite, or trachiliparite porphyry.

On the basis of the obtained silica aggregates, samples are prepared.

four:

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with

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cellular concrete of the following composition, wt.%: cement 13.2; lime 22.0; silica aggregate 35.2; water is 29.6, while the concrete, the mixture is porn by mixing. under overpressure, without gassing agent,

Indicators of energy consumption for grinding. The grinding capacity of quartz sand or ash from the TPP mixture is lower than the grinding capacity of minerals containing silica in the composition of acidic effusive rocks. Therefore, when grinding the silica material, the minerals of the alkaline component are first crushed, and then quarters

blend and phyco-technical properties of sand or ash and slag, the silica obtained cellular concrete material performs the function of pre-representation in the table,

When used in composition

an additional means of grinding the alkaline component; separating the creinegel from it and binding it to the alkali. It also speeds up the grinding process.

the raw material mixture dp for the filling of cellular concrete of vitreous rocks from the group of liparite, liparite porphyry, trachiliparite and trachiliparite porphyry energy consumption in terms of the mixture grinding ratio is 0.030-0.047 tons / kW-h, grinding capacity is 14-23 minutes, wear of the maxillaries (cylpeps and balls) does not exceed 1.3 wt.%. At the same time, the silica gel content in the ground aggregate mixture significantly increases (0.83-1.16 mg / ton).

Thus, the mixture according to the invention provides the following properties; increases the grindability of the silica aggregate by 1.22-1.75 times (the grinding time decreases), the chemical activity of the silica aggregate increases due to an increase in the cream nongel content by 1.19-1.61 times, the wear of grinding media decreases, the strength increases cellular concrete up to 7.8 MPa.

When grinding occurs, the destruction of minerals under the action of mechanochemical activation and local heating of particles and the transfer of alkalis of rocks into the liquid phase of the sludge in the amount of 4.2-5.3% o Increased content: the alkali in the sludge composition contributes to the formation of an increased amount of silica gel at the stage grinding silica material.

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an additional means of grinding the alkaline component; separating the creinegel from it and binding it to the alkali. It also speeds up the grinding process.

Claims (1)

Thus, in general, the necessary fineness of grinding of the silica aggregate is made up of coarse ground silica material of quartz sand or ash and slag and fine ground minerals, an alkaline component. This leads to an increase in the productivity (acceleration) of the grinding process of a silica aggregate, consisting, for example, of a mixture of silica sand and liparite. Invention Formula The raw material mixture for the filling of predominantly cellular concrete of autoclaved hardening, including silica-containing material and alkaline-containing component, which, in order to reduce the energy consumption for grinding the mixture while maintaining the physico-mechanical PROPERTIES of concrete, it contains vitreous rock in the vitreous rock. liparite, liparite porphyry, trachiliparit, trachiliparite porphyry in the following ratio of components, wt.%: Silica content 1shch material20-90 The specified vitreous mountain rock 10-80 Mineral composition of vitreous rocks Mountain Breed Normal alkalinity: liparite or liparite marketing porphyry Total alkalinity: trachiparbit or trichi parity porphyry The total content of alkalis (+ +) in the composition of these rocks varies in the range of 8.34-9.36% Minerals contained in rock Quartz, sour plagioclase, kanippat, biotite, sanidine Quartz, sour plagizeeclase, kapolppat, biotite, horn snag Table3