SU1031942A1 - Concrete mix - Google Patents

Abstract

CONCRETE MIXTURE, Incorporated Portland Cement, slag aggregate, plastifier additive and water, characterized in that, in order to reduce the coefficient of thermal conductivity and bulk density of concrete. as a slag filler, granulated blast furnace slag with a fraction of 5 mm with a glass phase amount of 98%, molded pshakov crushed stone with a fraction of 5-10 mm with a glass phase number of 5-10%, slag pumice stone with a fraction of 10-20 mm with a glass phase number of 45-80% with the following Ratio of components, vol.%: Portland cement 18.2-21.0 Granulated blast-furnace so 5 mm fractions with the amount of glass Phase J 98% 21.0-28.5 Cast hlakovy i crushed stone fraction 510 mm with the amount of CO glass phase 5-10% 14 , 0-21.5 Shlakova pumice With a fraction of 10-20 mm with an amount of glass S phase 45-80% 23.5-30.5 s iruyushchy additive0,3-0,5 VodyEstalny

Description

with

4: ND The invention relates to concretes used in construction for the manufacture of supporting fencing structures, in particular slabs of coatings, to which increased demands are made to ensure the heat-shielding properties. Known are kostruktsionny concretes on sonov granulated slag and slag rubble f1}. The closest to the technical essence and the achieved result to the proposed is a concrete mix for the manufacture of non-limiting structures, including cement, coarse and fine slag-and-stone aggregate, plasticizing agent and water G2. A disadvantage of known concrete mixtures is a high bulk density and high thermal conductivity. The purpose of the invention is to reduce the thermal conductivity coefficient and the volume of the mass of concrete. The goal is to achieve that the concrete mixture, including port, cement, slag aggregate, plasticizing additive and water, contains granulated blast furnace slag with a fraction of 5 mm with a glass phase of 98%, molten slag crushed stone of a fraction of 5-10 Mm s the amount of glass of the phase is 5-15%, slag pumice stone of the fraction 10-20 mm with the amount of glass phase 4 8p% in the following ratio of components, vol.% J Portland cement 18.2721, Granulated blast furnace slag fraction 5 mm with the amount of glass phase 98% 21.0 -28, Molten slag crushed stone 5–10 mm with a glass phase amount of 5–10% 14.0–21, Shlakova pumice stone of a fraction of 10–20 mm with a glass phase number of 4580% 23, 5–30, Plasticizing agent 0.3–0.5 Water Remaining In laboratory conditions, examples of making concrete mixes according to the invention. Concrete mix was prepared according to the following technology. The forced-reloading concrete mixer was loaded with fillers of fir trees measured by volume in accordance with the accepted ratio, some of the water was added, the aggregates were mixed for 30 seconds, added to the staying, remaining part of water and plasticizing agent (SDBR). The concrete mix was mixed until the breeze mass was obtained for 2-3 minutes. Example 1. Characteristics of the fillers: Grapshak, the content of the glass phase 96% ,. bulk volume (pg) 950 Molten slag crushed stone containing glass phases 5%, volume bulk mass (tooth 1050 Crushability 20%; lacquer pumice, glass phase content 80%, bulk volume mass (wob) 610 kg / m-, compressive strength in the cylinder () O, 8 MPa. composition of concrete, vol.%: Portland cement M 500 19.55. Slag of fraction i 5 Slag crushed stone fraction, .5-10 mm 18 X1lakova pumice fraction 10-20 mm27 Water10 SDB0, 45. Example 2. Characteristics of fillers: Granulated slag, glass phase content is 92%, bulk volume mass (y .. 950 kg / m. Cast slag rubble, glass phase content 10%; volume no-mass of mass (5 1050 crushability 22%. Shlakov pumice, glass phase content 60%} volume-bulk mass (2fo5 compressive strength in the cylinder (Kts) 0.9 MPa., Composition of concrete, oy.%: Portland cement M 500 21 Granulated slag fraction. $ 5 mm 21 Cast slag crushed stone fraction 5-0 mm 21.5 Shlakov pumice fraction 10-20 mm27 water 9 SDB. 0.5 Example 3. Characteristics of aggregators: Granulated slag, glass phase content 97%, bulk volume (Gob kg / m 3, Molten slag crushed stone, glass phase content 10%; bulk density (y,) 1060 m, crushability 22%; Shlakov pumice, glass phase content 70%, volume-bulk mass {og) 610 kg / m-; compressive strength in the cylinder SCZ) 0.9 MPa. The composition of the concrete, vol.%: Portland cement M 500 19.55 Granulated slag fraction 45 mm 28.5, Cast slag and stone fraction 5-0 mm 18

 Shlakov pumice ® 10-20 mm23,5 Water 10 SDB 0.45 Pr. im ep 4. Characteristics of applicants:

Granulated slag, glass phase content 98%, volume-yasypny mass (970kg / m} Cast rubble, glass phase content 15% / volume-filled masse {-jTos) 1080 kg / m-3, crush 3%;

ShlakovsS pumice, glass phase content 45%, bulk filling, lyiacca (Jog) 620 kg / m, compressive strength in the cylinder {RH) 1 MPa.

The composition of concrete, vol.%:

Portland cement M 50018, g

Granulated slag fraction 5. km25

 Cast vshakovy crushed stone fraction 5-10 mm14, Shlakova pumice fraction;

10-20 mm30,5

Water 12:

. SDB, 0.3

In all examples, use porous dapolinkers: finish i 5 w, contamination 3–5%, mpa – v rubble of fractions 5–10 Mhi, impurity 3–5%, slag II 10–20 NM, contamination 3-5%,

The table shows your properties. of the proposed izvecJgnykh betoyaa.G.

50

12

1800 1810 1820 1810

o0, 5 0.51 0.5 0.5

500 500 500 500

Bb bb bb bb

50 50 50

50

13

11.8 12 12.2

2000

300

AT 5

Claims (1)

CONCRETE MIX, including Portland cement ^ slag aggregate, plasticizing additive and water, characterized in that, in order to reduce the thermal conductivity and bulk density of concrete, 18.2-21.0 yuna contains, as a slag aggregate, granular blast furnace slag of a fraction of 5 mm with a glass phase amount of 98%, cast slag crushed stone of a fraction of 5-10 mm with a glass phase amount of 5-10%, a slag pumice fraction of 10-20 mm s the amount of glass phase 45-80% with the following ratio of components, vol. 'Portland cement Granulated blast furnace slag fraction 55 mm with a glass phase quantity of £ 98% Cast slag crushed stone fraction 510 mm with a glass phase 5-10% Slag pumice Fractions 10-20 mm with a glass phase 45-80% Plasticizing Additive Water 21.0-28.5 23.5-30.5 0.3-0.5 Else