SU1447787A1 - Concrete mix - Google Patents

Abstract

The invention relates to concrete mixes and may find application in the industrial construction materials. The purpose of the invention is to increase the strength in the initial periods of hardening while maintaining frost resistance, weather resistance and low efflorescence. The concrete mixture contains, in wt.%: Electrophosphoric slag 12.8-18.0; a sulfate waste from the production of capro -; - lactam 2.0-3.0 $ coarse aggregate 41.5-51.5; fine aggregate 21.0- 24.0; polymetallic ore enrichment waste 3.0-7.0} water the rest. The strength of concrete at the age of 1 day is 23.2 MPA, at the age of 7 days -37.6 MPA. 2 tab. (L

Description

h 1

00

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

The purpose of the invention is to increase the strength in the initial periods of curing. while maintaining frost resistance, atmospheric resistance and low altitude formation.

The used enrichment waste of polymetallic ores has the following chemical composition, wt,% g BaO 13.32; CaO: 25.05-28.155 MaOz 8.75-9.1; 3.81-4.15; MgO 14.37-15.4; MPO 2.1-2.7.

The mineralogical composition of the waste polymetallic ores, wt.%:

BaritalkalZit BaCaiCCOg) 13-14 Calcium A1 hydroalumoferrite A1 Ca401 ,, - ZP O6-8

Holland VaReMp O 6-7, Norseit BaMyo (SOZ) 7 7-8

Dolomite CaMgCCOj) 23-24 Calcite CasOz29-31

Granulated electrothermophosphoric slag milled in a ball mill to a specific surface 320, the following chemical composition, wt.%, CaO 46.80j Si02 42.76; 2.60; , 1.8; tIgO 2.45; + 0.72 F 2.25; 1.7; coarse and fine aggregate - crushed stone fr5-20 and river quartz sand from M. 1,4j sulphate mixture - waste production of caprolactam of the following chemical composition, wt.%: Na5C03 40-50; 25-35; NaCl 5-.14; 1.5-6.

The technology for preparing and laying concrete mix is as follows. The dry components of the concrete mix are mixed for 3 minutes. Shutter solution sodosulfate mixture with} 1150 kg / m. The concrete mix is compacted in molds with a size of 10 x 10 x 10 cm by vibrating the mill.

g,.

five

Dartic vibroplatform within 15-20 s. The resulting concrete hardens under normal conditions for 28 days, and then it is placed in aggressive media.

The compositions of the concrete mixture are given in table. 1, the test results of the samples - in table. 2

The proposed concrete mix based on industrial waste possesses a high corrosion resistance of concrete and reinforcement in concrete in aggressive environments while maintaining frost resistance, weather resistance and low efflorescence and high concrete strength in the early periods of hardening under natural conditions.

Claims (1)

Invention Formula Concrete mixture, including electrothermophosphoric slag, sodosulfate waste from caprolactam production, coarse and fine aggregates, additives and water, is characterized by the fact that as an additive, it contains the waste of enrichment of polymetallic ores based on carbonate salts of alkaline-earth metals in the following ratio of components, in May.%: Electrothermophosphorus slag12.5-18.0 Sodosulfate Waste production caprolactam 2.0-3.0 Large aggregate 41,5-51,5 Fine aggregate 21.0-24.0 Waste enrichment of polymetallic ores Based on alkaline earth metal carbonate salts 3.0-7.0 WaterEverything 1447787 Table 1