SU1303575A1 - Binder - Google Patents

Description

The invention relates to building materials, namely, the composition of mineral in adhesives, and can be used to prepare mortars and concretes.

The purpose of the invention is to increase the strength of the ghost.

The granulator includes a granulated blast furnace pshak, as a hardening agent it contains a mixture of converter slag, steel sheet etching waste and two-sided gypsum at the found optimum ratio of co-ents. .

The chemical composition of the steel sheet etching waste, wt.%: SiO 0.13-0.17; CaO 0.45-0.49; MgO 0.35-0.38; 10.2-11.5; (НОН + СО) 87,11-87,35; PPP the rest.

Waste etching steel sheet formed during the processing of transformer steel.

To clean the steel, it is passed through a bath filled with soda solution. The precipitate accumulates in the bath, which after a certain time is removed through the filter into the sump. From the settling tank the pickling waste goes to the dump.

The presence of alkaline compounds (waste from pickling steel sheet) in the concrete mixture leads to an intensification of chemical processes in the burning systems, an increase in the activity of the burning substances, which increase with an increase in their basicity. Alkaline compounds in their activity stand in fourth place after Rb, Cs, K.

The advantages of the proposed binder are the increase in the strength of the binder, the disposal of the steel sheet pickling waste, the reduction of the mixture's stability, its cost-effectiveness.

The use of a tenter, consisting of granulated blast furnace slag, converter slag, steel sheet pickling waste and two-water gypsum, will expand the base of cheap building materials. I

The proposed feed is prepared by the following technologist. After dosing all the components, the dry materials are mixed, the mixture is closed with water and thoroughly mixed. Stirring is carried out until a uniform state is reached.

From the mixture obtained, I prepare sample beams of 4416 cm in size.

five

0

five

45 50

0

35

0

62

21

3 10

to control physical and mechanical properties. The stub seals are produced on a standard vibrating plate for 3 minutes. Hardening of the beams is carried out in a bath with a hydraulic shutter for 28 days. After that, bending and compression tests are performed, the results of which are shown in the table.

Example 1. The composition in the living wt.%:

Granulated

blast furnace slag

ground

2000-2100 cm 2 / g)

Converter ground slag (sp. Sw.

2500-2600)

Pickling waste

steel sheet

Two-water gypsum

(beats 20002100). Water

After dosing all the components, the dry materials were mixed, the mixture was sealed with water and thoroughly mixed until a homogeneous state was achieved. From the resulting mixture was prepared samples of the beam size cm to control the physico-mechanical properties. The compaction in the live made on the standard vibrating plate for 3 minutes. Hardening of the beams is carried out in a bath with a hydraulic shutter for 28 days, after which tests for bending and compression were carried out. The test results are shown in the table.

Example 2. The composition in the feed, wt.%:

Granulated

blast furnace slag

ground 60

Ground slag converter20

Pickling waste

steel sheet7

Dvuvodny. Gips3,6

Water9.4

Preparation, compaction and hardening of the substance are carried out as in Example 1.

The results of the determination of the physicomechanical properties of the recipient are given in the table.

PRI me R 3. The composition of the live, wt.%:

Granular

domain slag

ground

Converter

ground slag

Pickling waste

steel sheet

Two-water gypsum

Water

Preparation, compaction in a binder is carried out in Example 1.

Results of determination of fichanic properties

289

307 267

95-98

62

72 60

30-37

Editor V. Kovtun

Compiled by 0. Motorina

Tehred L, Serdyukov Proofreader M. Samborska

Order 1275/27 Circulation 588 Subscription VNIIPI USSR State Committee

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

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

W

15

20

25

The application of the proposed components makes it possible to reduce the cost of a binder, since all the additives to the blast furnace slag are metallurgical waste, solve the problem of recycling steel sheet pickling waste and expand the scope of converter slag.

Claims (1)

Claims of the Inventory, including ground granulated blast furnace slag, ground converter slag, two-water gypsum and water, is distinguished by the fact that, in order to increase strength, it contains an additional waste of pickling steel sheet in the following ratio of components, May,%: Ground ground granulated slag58-62 Ground converter slag19-21 Two-water gypsum 3-5 Waste from pickling steel sheet 4-9 Water Rest