SU969694A1 - Raw mix for preparing light-weight concretes - Google Patents

Description

The invention relates to raw materials for lightweight artificial stone and can be used in the building materials industry.

A known raw material mixture for the manufacture of artificial stones, including ground granulated spackle, sub-alkaline water and blast core 1.

The closest to the technical essence and the achieved effect to the proposed is a raw mix for concrete, including granulated blast furnace slag and filler C2}

A disadvantage of the known mixtures is relatively low frost resistance.

The purpose of the invention is to increase the frost resistance.

This goal is achieved by the fact that the raw mix for producing lightweight concrete, including liquid glass, granulated blast furnace slag and aggregate, contains as a filler the product of crushing limestone shell limestone and expanded clay gravel in the following ratio, wt.%:

Liquid glass5-10

Crushed product

limestone shell 25-35

Claydite

gravel 25-50

Granulated

blast furnace slag Else

The introduction of lightweight porous aggregate - expanded clay gravel and limestone-shell rock crushing product increases the porosity of concrete, which provides improved

10 of its thermal characteristics and reduces the bulk density of the material. The high activity of slag alkaline and the presence of free alkalis in the system, which interact with limestone and expanded clay to form water-resistant substances of alkaline and alkaline earth metal silicate composition, causes a strong adhesion of cement stone.

20 with aggregate, increased density of contact zones, providing sufficient strength of concrete and increased frost resistance.

Example. In a concrete mixer

Forcible action, ceramsite gravel, limestone component, and abated slag are mixed for 1-2 minutes. Before mixing, the domain granulated donkey is ground to grinding in a ball mill.

UP TO 30003500 Specific Surface. Then the silk component is added to the mixture, which is injected with mixing water. The mixture is stirred for 2-3 minutes.

Forming products from the raw mixture is carried out by vibrating

neither Molded products harden during steaming or under natural conditions.

Prim compositions proposed. , raw mixture and properties presented in the table ..

I Granulated blast furnace slag

Liquid glass -1

, 25 g / cm D recalculated

Gma R P

on

Product crushing n zko 25 50 solid shell

Expanded clay gravel

Granulated domain

slag

Liquid glass in terms of

on .

Product crushing low-strength shell rock

Expanded clay gravel

Granulated domain

slag

Liquid glass M -1

0-1.25 in terms of

on

Product crushing low-strength shell rock.

Expanded clay gravel

Prototype

The feasibility of sharing shell limestone and expanded clay gravel in slag alkaline concrete consists in reducing the shrinkage deformations of the conglomerate on the limestone aggregate. This contributes to its intensive obzha1, 0

125

1000

1,3

150

1200

1.4

200

1400

50-100

hue, and, therefore, hardening 60 of it in concrete, as indicated by the distribution of microhardness in the filler grain.

Thus, the homogeneity of the microfluoride of the contact zones of the slag65 | alkaline fSeTOHa on the limestone to the cancer (stove-set and claydite, as well as the hardening of the claydite gravel by a shell-limestone conglomerate determine slag-alkaline concrete, the high physical-mechanical properties of lightweight limestone from the seamstones, and the slag alkaline basestone, the high physical-mechanical properties of the limestone, determine the slag alkaline concrete, the high physical-mechanical properties of the limestone and concreteum determine the slag alkaline cement, the high physical-mechanical properties of the limestone and coniferous make it possible to determine the slag alkaline cement, the high physical-mechanical parameters of limestone and coniferous make it possible to use slag alkaline cement, the high physical-mechanical properties of light limestone come from the seamstones, as well as the high-mechanical light indicators of the concrete, which we use, we offer.

The technical and economic efficiency of the raw mix for lightweight concrete consists in obtaining highly efficient structural and thermal insulation materials that meet materials | 1, which meet high construction requirements)

15.0-45.0 800-1400

0.19-0.4 125-200

Claims (2)

1. Author's certificate of the USSR 583987, cl. From 04 To 23/00, 1976. 2.Volzhensky AV, Burov Yu.S., Vinogradov B.N., Gladkikh K.V. Concretes n products from slag and ash materials. M., stroiizdat, 1969, p. 204-205.