SU701974A1 - Concrete mixture - Google Patents

Description

(54) CONCRETE MIXTURE

The invention relates to construction materials and can be used in the manufacture of products and the manufacture of structures and structures with high sulphate resistance.

Concrete mixtures based on portland cement and aggregates are known. The disadvantage of these concrete mixtures is the use of special; sulphate-resistant portland cement.

A concrete mix is also known for the manufacture of sulphate-resistant products, including a non-sulphate-resistant por1 and 15–15% cement, fine sulphate and cue aggregate 45–75% and water 2.

This mixture is the closest to the invention in its technical essence and the achieved result.

A disadvantage of the known mixture is the relatively low sulfate resistance at the age of more than one year.

The aim of the invention is to increase the sulphate resistance of concrete.

The goal is achieved by the fact that a concrete mix for making sulphate-resistant products, including portland cement, fine sulphate-resistant aggregate and water, contains fine sulfate-resistant primer and augite-albite aggregate , wt.%:

Portland Cement14-19

Fine sulphate resistant

augate placeholder and

albite26-30

s

Large sulphate resistant

augate placeholder and

albite46-48

Ek) Other

0

As Portland cement, it is advisable to use medium aluminate Portland cements with a content of tri-calcium aluminate at 11% each.

: The chemical composition of the mountain progroup from augite and albite is represented by sodium, calcium, iron, and magnesium aluminosilicates and vice-silicates with continuous chains and frameworks of tetrahedra in the crystalline structures of silicon oxides of silicon and aluminum.

Example. An ethereal mixture is prepared from the Middle Aminatum Portland cement of the Bakhchsarai Cement Plant with a content of OA 8%, crushed stone sand, semi-finished

Port; first cement of the Bakhchsarai cement plant

Aluminosilicate sand and augite and albite

Crushed aluminosilicate of augite and albite

Carbonate sand water

The coefficient of sulfate resistance of concrete with a test period of 1 month.

12

24

From the data of the table, an increase in the sulfate resistance of the proposed concrete with a test period of more than a year c. the time of manufacture of the concrete as compared with that of the known concrete mix.

Claims (2)

Invention Formula Concrete mix for making sulphate-resistant products, including jordlanddement, fine sulphate-resistant crushing of mountain rock of Crimea, containing albite, and chlorite of sodium, calcium, magnesium and iron aluminosilicates. Test samples for sules and resistance are conducted according to GOST 4798-69 when the content of sul Lat-ion is Yu g / l in sul- phatoaggressive environment. The compositions of the concrete mix and sulphate resistance of concrete samples are given in the table. 14 ten zo 26 48 46 eight 9 1, OO 1.06 0.98 0.98 aggregate and water, characterized in that, in order to increase the sulfate resistance of concrete, it contains as a fine sulfate-resistant aggregate aggregate from augite and albite and additionally a large sulfate-resistant aggregate from augite and albite in the following ratio of components, wt.%. : Portland Cement 14-j. 9 Fine sulphate resistant augate placeholder and albite2 6-3 О5 coarse sulfate resistant aggregate of augite and albite 46-48 the rest.,. Sources of information taken into account in the examination of 70: R74L;, .. m ,,,, „„ „, (., Corrollations. Ptp ,,. IM., Gosizdat but ctpoUT..n stpa, lur. y s, 17-75. -io., 2. Lrav R.I. Enhancing the resistance of concrete to sulfate5 by producing sanding RnnfinHnTuuiv, Gkaronatny sands. Construction materials, № 1О, 1976,