SU1754689A1 - Concrete mix - Google Patents

Abstract

Invention m. used in the building materials industry. SUMMARY OF THE INVENTION: A concrete mix contains. wt.%: fly ash from brown coal combustion 31.64-39.3; crushed stone 27.0-31.7; a by-product of the production of isopropylphenyl para-phenylenediamine — solut 0.54–0.61; alkaline drainage of caprolactam production 0.05-0.06; sand-gravel mix 25.0-27.3, water the rest. The concrete mix is prepared by mixing the components with mixing water. Additives can be administered in dry form or with mixing water. Metal durability on a twelve-point scale after 500 hours of testing; steel 2-5, steel 20-5. 3 tab.

Description

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

It is known to be a gnaw based on fly ash from burning Kansk-Achinsk brown coal. Reaching is designed to strengthen the soil.

The disadvantages of a binder are the low strength and the additional costs of pre-grinding the used fly ash.

A known concrete mixture comprising fly ash from burning brown coal, crushed stone, chloride-containing additive and water.

The disadvantages of the known concrete mix are the vysification due to the presence of CaCIa and the reduced resistance of the reinforcement in the concrete.

The goal is achieved by the fact that the concrete mixture, including fly ash from burning brown coal, crushed stone, chloride-containing additive and water, contains as a chloride-containing additive a byproduct of the production of isopropylphenyl para-phenylenediamine - solut and additionally - an alkaline drainage of caprolactam production and sand-gravel mixture in the following ratio, wt.%: Fly ash from the burning of coal 31.64-39.3

Crushed Stone 27.0-31.7

Solut0,54-0,61

Alkaline drain of caprolactam production 0.05-0.06

Sand-gravel mix 25.0-27.3 WaterEverything

The secondary product from the production of isopropylphenyl paraphenylene diamine is a crystalline mass in the form of granules up to 100 mm long. The granules are obtained after drying an aqueous salt-containing effluent in an aero-fountain dryer, followed by briquetting the powder by the method

VI

Sya about 00 yu

extrusion. Briquetting is performed to prevent dusting during transport and storage. The granules dissolve well in water. The product has developed technical specifications TU 113-03-13-18-88 for use as a mineralizer for cement clinker, for obtaining quick-hardening cement and concrete.

Alkaline drain of caprolactam production from benzene - TU 113-03-488-84 is used as a plasticizing air-drawing additive. The addition of salt can be administered with mixing water or in a dry state.

The plasticizing-air-entraining additive SHSPK prevents rapid setting of the concrete mix, gives the mix uniformity while mixing and cohesion, eliminates stratification after mixing the dry mix with water.

The tested compositions of mixtures of cementless concrete are given in table 1.

Samples were prepared from mixtures. They were tested for mechanical strength and frost resistance.

A portion of cubic samples measuring 10x10x10 cm is filled with a natural vagina: conditions of hardening, and some are subjected to heat and humidity treatment in a steam chamber at 90-95 ° C.

Samples at the age of 28 days are tested for mechanical compressive strength and frost resistance,

The test results are shown in table 2.

Corrosion resistance of reinforcement in concrete is given in Table 3.

As shown by the test results, there is a significant difference in the compressive strength of concrete manufactured with heat and moisture treatment, and hardening under natural conditions.

The increased strength of steamed cementless concretes compared to the strength of concrete in hardening in natural conditions can be explained by the positive effect of temperature on the acceleration of hydration and dehydration of metal oxides of fly ash and especially calcium oxide.

F o rm a la zo b r ete n i

The concrete mix, which includes fly ash from burning brown coal, crushed stone, chloride-containing additive and water, is such that, in order to eliminate high-alization and increase the corrosion resistance of the reinforcement in concrete, it contains a by-product additive production of isopropylphenyl-paraphenylenediamine-solut and additionally alkaline drainage of caprolactam production and sand and gravel mixture in the following ratio of components, wt.%: Coal from the incineration of brown

coal 3.64-39.30

Crushed Stone 27.0-31.7

Solut 0.54-0.61

Alkaline drain of caprolactam production 0.05-0.06

Sand-gravel mix 25.0-27.3 WaterEmer.

Table 1

Indicators

one

Mechanical strength at compression at the age of 28 days,

mpa; ; l:

Samples, natural:

hardness; 5.95

Samples subjected to thermal moisture bridging

Morozostryykost, cycles (freeze-settling)

7.5

 The higher the score, the more corrosion resistant the metal is.

 The content of chlorine ions in the composition of the working solution of Solut does not exceed 0.01 wt.% (Mixtures of fly ash) .;

Ta b and c-a 2.

Mixture

DCEICIIIIZ

lO.W 12.0 il (l6 15.1

 25.0 35.6 -30.0 W, 0

11.9 6.35 20.0 9, W

Ta bl and c a 3

Claims (1)

15 claims A concrete mixture, including fly ash from burning brown coal, crushed stone, a chloride-containing additive and water, is of great importance in that, with the aim of eliminating salt formation and increasing the corrosion resistance of reinforcement in concrete, it contains as the chloride-containing additive is a by-product of the production of IZPROPHYLPHENIUM PARAPHENylenediamine - salt and additionally an alkaline runoff of caprolactam production and a sand-gravel mixture in the following ratio of components, wt.%: Fly ash from burning brown coal 3.64-39.30 Crushed stone 27.0-31.7 Solut 0.54-0.61 Alkaline runoff of caprolactam production '0.05-0.06 Sand and gravel mix 25.0-27.3 Water Else. Table: The content in the mixture, wt.% 1ΞΙΞΈΞΙΞΖΙΞΞΙΞ. Components Fly ash from the burning of brown coal; Secondary product of isopropylphenylparaphenylenediamine production 'Chain runoff production,. va caprolactam Sand and gravel Crushed stone Water 30.00 31,3'4 35.26 38.07 32.86 39.30 A 0.50 0.60 .0,60 0.61 ’ 0.55 Ο, δΑ 0.5A 0.6A 0.06 0.06 0.06 0.06 0.06 0.06 0,07 28.59 27.3 27.27 26, About 25.89 25.03 2A.75 32.93 31.70 28.20 27.12 31.66 27.07 2D, 9A 7.82 9.00 8.60 8.1 "· 9.00 8.00 9.10 Indicators .. Mixture GTTT'P Those blitz 2 Mechanical compressive strength at the age of 28 days, MPa: Samples, natural hardening 5.95 Samples subjected to thermal-moisture image. bot 7.9 Frost resistance, cycles (freezing-settling) 10.46 12.0 11.16 15.1 25.0 35.6 '30, 0 44.0 11.9 20,0 6.35 9.46 Tabl 3 /ΐ/'ί://.'· U ¹⁴ ''' Metal samples The resistance of metals on a 12-point scale (after 500 hours of testing), point according to the invention (Solut **) prototype Steel 0 (St0) 5 3 Steel 2 (St2) ·.. 5 · ’3 Steel 3 (StZ) ·- '5 3 Steel 20 (Sp20)  . 5 4 Gray Cast Iron  ' 5 4 Malleable cast iron (CZK) 5 4 * The higher the score, the metal is more resistant to corrosion *. * The content of chlorine ions in the composition of the working solution of Solut does not exceed 0.01 wt.% (By weight of fly ash).