SU1085955A1 - Concrete mix - Google Patents

Abstract

CONCRETE MIXTURE, including Portland cement, aggregate, blowing agent and water, characterized in that, in order to improve strength, it contains slag-glass-and-horizite crushed stone as a filler in the following ratio of components, May. % Portland cement 20-26 Shlakostekloporititovy pkeben60-70 Gasifier 0.01-0.1 Water Else

Description

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Sd; I ate Sd I The invention is relative (; it to concrete & {mixtures) and can be used in the construction industry, specifically for the manufacture of chemically and wear resistant lightweight and high-strength products and structures made of heat insulating lightweight concrete. The lightweight concrete mix is known; including mineral in the active, silica component, water and air-entraining agent lj. The disadvantage of this mixture is its low strength. The closest to the invention is a concrete mixture containing 28-33 fine ground sand 29-30; aluminum powder 0.05-0.10; caustic soda 0.5-1 ,, 5; carboxymethylcellulose 0.05-0.15 and water 37.4-40.2 2. The disadvantages of this mixture are The purpose of the invention is to increase the strength. The goal is achieved by the fact that a concrete mixture, including Portland cement, aggregate, gas generator and water, contains slag-and-gravel crushed stone as a filler in the following ratio, wt.%: Portland Cement 20-26 Ipakostekloporizitivy rubble60-70 Gasifier 0.01-0.1 V The remaining Other Ilakostekloporitit rubble has the following chemical composition SiOj 66-72; CaO 18-24; A1.0 5-7; MqO 3-4; NajO 1-2; Fe O t steel, Shlakostekloporizit specified chemical composition has increased exposure to various types of cements, chemical and corrosion resistant to their environments. The aggregate in the form of the specified stone is the following physicochemical thermophysical properties: Specific gravity, kg / cm 2.2-2.5 Volumetric weight, g / cm 1.1-1.9 Total porosity,% 25-50 Vdr absorption,.%. 1-3 Bulk density (fraction 10-20 mm), g / cm 0.6-0.8 Frost resistance. More than MRZ-15 Compressive strength, kg / cm26500 Bending strength, KG / CM21000 Coefficient, thermal conductivity 0, 54 kcal / m h / h degree / Ohmic weight loss stability (GOST 10134-62),% in 1 n „HC1 1.37 in n. NaOH 2.81 For the preparation of the substance mixtures of ingredients are prepared, the composition and properties of which are presented in the table. Example: To prepare a concrete mix, portland cement 400 is mixed, pshakostekloporititovy crushed stone fractions 3-10, 10-20 and 20-40 mm with a bulk density of 1400 kg / m aluminum powder and water. From this mixture, molded products that are subjected to an 8-hour heat and moisture treatment in a chamber in which a mixture of air and natural gas combustion products circulates. During the first 5 hours, the temperature of the medium is maintained at 150-190 ° C at a relative humidity of 4-7%, then the temperature is reduced to 60 ° C, and the relative humidity is 3-4%. The expected economic effect from using the invention is 1.2 million. rub, per year.

Portland cement

20.00 25.95 26.00 21.19 60.00 61.49 70.00

Aluminum powder Water

Volume and density (after drying for 5 hours), kg / m

Compressive strength, kg / cm

Table continuation

0.01 0.02 0.01 0.1 12.00 14.03 12.5 8.71

1350 1312 1350

1318 220 180 220 185 40-50

Claims (1)

CONCRETE MIX, including Portland cement, aggregate, blowing agent and water, characterized in that, in order to increase strength, it contains slag and glass-slag crushed stone as a filler in the following ratio of components, May. % Portland cement 20-26 Slag glass high gravel 60-70 Blowing agent 0.01-0.1 Water Rest S Yo n * o 00 SI sl w