SU1622316A1 - Binder - Google Patents

Abstract

The invention relates to hydraulic in the holding and can be used in the building materials industry. In order to increase the compressive strength and reduce the creep coefficient, the holding contains, in May. %: granulated slag 50-75; alkaline-alkali-emitting alhomosilicate spec 25-50. The spec has a composition of 4CaO-RzO A1203-2SiCL, where R is Na or Na + K. The presence of specimen allows to increase the ultimate strength of samples to 72 MPa at early stages of hardening and to reduce the creep factor under load for 8, 90 and 180 days . to 0.18, 0.47, 0.5, respectively. 4 tab.

Description

The invention relates to chemistry, in particular to hydraulic fluid, and can be used in the building materials industry.

The aim of the invention is to increase the compressive strength and reduce the creep coefficient of the slag in the living.

On the ground, including granulated slag and an alkaline aluminum-containing component, contains an alkaline-alkaline-earth aluminosilicate spectrum of the composition 4CaO-R20 A1203c "2Si02, where R is Na or Na + K, in the following ratio of components, May. %:

Granulated

slag50-75

Alkali-alkaline-earth aluminosilicate spec25-50

When mixing into the water carrier, splitting of alkaline aluminosilicate cake, as a result of which alkaline aluminate passes into the composition of the dispersion medium, and dicalcium silicate forms into the composition of the dispersed phase. In the case of hardness in the living system, the presence of alkaline aluminate in the dispersion medium favors the predominant synthesis of hydrogranates as well as alkaline hydroaluminosilicates in the composition of the neoplasms, sealing the structure of the artificial stone. The solidification process is characterized by a high crystallization rate of gelatinous

WITH

t t

with

3

phases by virtue of the presence in the composition of the diper phase of a highly basic calcium silicate, which is formed in the result of the splitting of the cake.

Such an orientation of the hardening process contributes to the fact that even after 12 hours of hardening in the initial conditions, the artificial stone is characterized by high hydraulic properties, and after a set of brand strength, low creep.

As a raw material component in a binder, granulated slags of the blast-furnace or other production facilities are used, May. %: CaO 15-49; MgO 1.5-11.5; SiOz. 36-46; A1206 6-1

+ FeO 0.4-40; MnO 0.3-21; S03

FeaO,

0.1-3 and alkali-alkaline-earth aluminosilicate sinter obtained in the process of sintering CaO or CaCO with natural or synthetic alkaline aluminosilicate selected from the group: nepheline, urtite, mariupolite and synthetic mixtures of nepheline composition, the chemical composition of which is presented in May. %: Si02 31.0- 50.2; A1A03 24.5-35.9; Na20 + CgO 14.0-21.8; FeO + Fe203 to 5.5; MgO up to 1.0; T10g to 0.3; CaO to 7.0.

The technological process of obtaining a binder includes drying the slag to a moisture content of 1-2%, mixing the dried slag with alkali-alkaline-earth aluminosilicate spec, grinding the resulting mixture to a specific surface of at least 300 m / kg and mixing the product with water.

Reactive activity is determined by GOST, and hydraulics is determined by testing samples after hardening under normal conditions for 12, 24, 72, 96 hours and subsequent storage in water for a time corresponding to a 28-day age in each particular case. Creep is estimated by creep coefficient.

The granulated blast furnace slag of the Zaporozhye and Chelba Metallurgical Combine, the electromol- phosphoric granulated slag of the Chimkent p / o Phosphorus and the cupola granulated slag of the Gomel Metallurgical Plant, the composition of which is given in Table 1, are used as components of the host. one.

As alkaline-alkaline-earth aluminosilicate cake, lime-nepheline spectrum of the Achinsk alumina refinery is used - a product formed during the process of aluminum production by the dry method, as well as those obtained in the laboratory by sintering calcium carbonate (CaCO) and alkali aluminum silicate in ratios in which the mixture

for each molecule of Si02 alkali aluminosilicate, urtite of the Ki - Shaptyrsky massif, nepheline, Maripolitol Kalinch, but Shevchenko deposit, synthetic mixture based on sodium hydroxide, aluminum and silicon are used.

The chemical composition of alkali aluminosilicates is given in table. 2, and the compositions in the living - in table. 3

The cook is prepared as follows.

Dried Granulated Slag

to W 1.25% is mixed with SPEC and the mixture is ground in a ball laboratory mill to San 350 m2 / kg. On the basis of the obtained grinding product or a mixture, beam samples with a size of cm are made, which are tested for 28-day-old strength for hardening in water after hardening under normal conditions for 12, 24, 72 and 96 hours from the moment of production.

Claims (1)

Claims of the invention Including, including granulated slag and alkaline aluminum-containing component, characterized in that, in order to increase compressive strength and reduce creep, it contains alkali-alkaline-earth component as an alkaline aluminum-containing component. aluminosilicate sinter composition 4CjO. xP, rO-L1g03-25102, where R is Na or Na + K, in the following ratio of components, May. %: Granular slag50-75 Alkali-alkaline-earth aluminosilicate spectrum of the composition 25-50 Tables a - I Zaporizhzhya Domain Chel Binsky domain Chimkent electrothermophosphorus Gomel cupola 2.3 45.89 36.39 6.75 2.94 2.61.63 2.5 36.2 38.4 15.22 7.96 0.70.65 2.09 45, 15 43.35 3.0 4.0 0.47 2.1 0.87 0.97 1.73 31.5 38.3 10.6 5.0 5.011.5 Nepheline of the Kola Field 43, 0 Hurtis-Shaltyr massif41, 0 35.8 24,55,5 table 2 3,30,85 1,018,0 2,1 2,47 3.93 0.95 6.52 11.64 21.8 3.53 3.23 4,414,0 3, " Achinsk Alumina KomTable 3 Table 4 1321.5 1-061-4570.0 71.1 71.2 1424.5 1-402-0060.0 60.9 61.0 1522.5 2-003-0065, L PL.O dr., O Continuation of taRt.4 0.4V 0.53 0.52 O.60 0.50 0.55