SU1390213A1 - Concrete mix - Google Patents

Description

with so about you

Ico

one

The invention relates to the production of building materials and can be used in the manufacture of chemically resistant concrete for load-bearing building structures operating in aggressive liquid and gaseous media.

The purpose of the invention is to increase the acid tightness and modulus of elasticity.

To prepare a concrete mix, a liquid sodium stele with a density of p 1.45 g / cm and a silicate module M 2.8 is used. Vulcanic water-containing glass - lerlite, obsidian, vitrofir frak-0,0t-0.1 mm. Waste of dinas production (silica Cree902132

(modification) - combat, as well as sub-standard dynas are transferred to waste after the burning stage. It is a low-temperature ui-modification of cristobalite with a core of unchanged quartz, the use of which as a seed yields the greatest effect in the synthesis of feldspar compounds such as albite, orthoclase, which make up the matrix stone of concrete from the proposed mixture. Acid-alkali resistant aggregate - quartz-sand of 0.14-5 mm fraction, granite silt and quartz crushed stone of 5-15 mm fraction.

The compositions of the proposed concrete mix and analogue are given in table 1, known - in table 2.

ten

Liquid glass Perlite Quartz sand

Waste of silica production

Liquid glass Perlite

Quartz sand Granite rubble

Waste of silica production

Liquid glass Obsidian Quartz sand Silica waste

production

Table 1

1.5

Continued table. one

Perlite

Quartz sand Quartz crushed stone

Polyether resin based on dimeterephthalate production wastes

T a b l and 1 d a 2

Components

Content of components, May,%

Liquid sodium glass

Alkaline silica crystalline modification fraction 1.25 mm (tridymite

Ground quartz sand (1000 - 1500)

Quartz sand fraction of 0.14-5 mm

Crushed stone granite fraction 5-15 mm

Water

Samples are prepared as follows.

The withdrawn dry components are mixed for 1.5-2 minutes, then in a continuation of the saw.1

five

0

five

0

five

0

five

d t water glass and mix for 4-5 min. The mass is placed in molds (7-7-7 and 10 10-40 cm), compacted with a vibratory rammer and subjected to heat treatment in closed forms according to the following conditions: lifting up to 170-180 ° С - 6 × shutter speed at 17O – 180 С - 3 h , cooling (up to 20 ° С) - 6 h.

Samples are tested to determine their properties. At the same time, the durability of concrete is determined by the following and me- tus e.

The strength of the sample in the press is determined at a short-term load (for example, P 1000 kg / cm), then the sample is loaded with a load close to the limit (for example C 0.95 P, t, e, GT 950 kg / cm), while fixing the time from loading time before unloading. Further, the intensity of the load for new samples is reduced to b 900, 850, 800 kg / cm, etc., and for each load the time of existence of the samples under load is noted. According to the data obtained (head load 1; 0.95, etc.) and the time of bearing capacity, a graph is drawn, where the extrapolation determines the load limit that ensures an arbitrarily long-term existence of concrete, t, e. its long lasting strength. Determination of long-term strength under the action of aggressive media is similar to that described, but the load levels are taken from the short-term strength of the sample, which was for a long time in an aggressive environment,

713902138

until it is completely water or acidic, Table 3; the properties of the samples from the supply of the mixture, the analogue and the known

The properties of the samples from the proposed mixture are given in Table A. my mixture and analogue are given in

Table 3

EXAMPLE U ak to e. The shrinkage of a drink in the SS of the sample in Examples 1-8 is absent.

The proposed (mscoernie-cTtJii concrete) PO-115 105-i52 14-16 49000-52000 0.7-0.8 0.6-0.65 0.5-0.55

N.-gBestna

(colo-.

concrete concrete) 120 SO, ZV 39000

Proposal; ,

(m aposeo} gh-

St baston) 91-OO 13-16 54000-56000 0 ,, 0.65-0.7, 55

Known

(large a er

standard GGTOK) 125

Dialogue I (fine-grained b tone) 0.98%) 62000, 750.6-0.65 0,

about

(Kpynviosepnpstpg concrete) 100-1 0, 0.95% Zb-Z 380000.7-0,750.65 O, 5-055

Continuation of table 3

Table 4

 ,

0.3

and 2000

oi

0.55 0.36

155

110-145

0.98X 0.98

The simultaneous increase of the modulus of elasticity and acid-tightness achieved by the proposed concrete mix provides an increase in the reliability of operation of reinforced concrete structures 200O-2300

tS

0.65

0.5

0.4

in aggressive environments with a higher degree of loading. This prevents the occurrence of cracks in the concrete and corrosion of steel reinforcement.

Claims (1)

CONCRETE MIXTURE, including liquid glass, finely dispersed acidic volcanic water-containing glass, finely dispersed silicon dioxide of crystalline modification and an acid-alkali-resistant aggregate, characterized in that, in order to increase acid impermeability and modulus of elasticity, it contains dydine waste as a finely dispersed crystalline crystal of crystalline modification in the following ratio of components, May.%: Liquid glass Fine-dispersed acidic volcanic water-soda- 12-13 burning glass Dinas Waste 33-34 production 2-4 Acid Alkali ABOUT persistent filling f carrier rest SU. „, 1390213