SU1239118A1 - Concrete mix - Google Patents

Description

12391

The invention relates to the construction materials industry and can be used in the manufacture of concrete mixtures. . .

The aim of the invention is to increase strength.

In the process of burning clinker to the rim

In the kilns, a significant portion of the calcining material is carried out of the kilns along with the flue gases. The amount of material to be consumed, depending on the properties of the raw material, the type of furnace, and the mode of its operation is 3-30% of the consumption of the raw material mixture. The chemical composition of cement dust used: is given in Table. one.

157.55 1.0917.44 7.47-5 85 85

256.51.0518.5 8.43 0.1 5 „71

18a

Slag is used in the form of rubble (5-10 mm) and sand (0-5 mm) in the ratio 1S1. The chemical composition of the slag is given in table. 2

The technology of preparation of the proposed composition is as follows.

Cement dust, lime and gypsum are mixed at the beginning dry (1 minute), then water is added, slag rubble and stirring is continued for another 2 minutes. Mixing time is 3 minutes. Then the mixture is placed in the form 10x10x10 cm, vibrate and steamed in the mode 2-6-2 at 90 C.

The compositions of the proposed concrete mix are shown in Table. 3, and the compositions known - in table. 4. Physical and mechanical properties of the mixtures are given in Table 5.

Table 1

table 2

2.78 6.22 Traces 1.60 3.05 5.15 1.51

.Table 3

P)

but

S

h y nJ

n

Editor N. Egorova

Compiled by T. Selchenkova

Tehred I. Prpovich Proofreader M. Demchik

Order 3350/19 Circulation 640

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Table 5

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Claims (1)

CONCRETE MIXTURE, including gypsum, lime, finely dispersed additive, sand and crushed stone from volcanic slag and water, characterized in that, in order to increase strength, it contains cement dust as a finely dispersed additive in the following ratio of components, wt.%: Gypsum 0.5-2.5 Lime 0.5-3.5 Cement dust 20-35 Sand from the volcano nichnogo slag 21-29.5 Volcanic slag crushed stone 21-29.5 from Water Rest SU and*