SU1244125A1 - Mortar for finishing work - Google Patents

Description

FIELD OF THE INVENTION The invention relates to compositions of building plants for finishing work and may find application in construction.

The aim of the invention is to reduce shrinkage and water resistance.

Set the size of the fractions of sand, choosing, for example, as the largest fraction d 2-4 mm. According to the formula: d

 d „(О, 125-0,156)

 -r h,. - v, 1 .. W /,

find the sizes of the first (d) and second (dj) complementary fractions of sand:

d (2-4) 40.125-0.156) 0.25-0.63 mm, g

d2 (2-4) (0.125-0.156)

 0.3-0.10 mm,

and the mass quantities of each tail coat, and set by the formulas:

t.

m

about

t.

t. 64%

t,

26%, t, 10%.

The sand is fractionated and the desired scrapings are selected in calculated amounts.

The clay is pre-dissolved, it is run through a mixer and a vibrating screen into a container with the calculated amount of water. Then, the greatest complementary sand fractions, cement, and dry mixture are mixed for 2 minutes into the forced-action mixer. To obtain a colored mortar, a calculated amount of pigment is preliminarily introduced into the cement and the mixture is thoroughly homogenized (preferably with vibrating mills). After all the dry components are mixed, the aqueous clay solution is introduced into the mixer and mixed again for 2 minutes. The mortar is ready for use.

In tab. 1 presents examples of the composition of mortars. Composition 4 contains 2 sand fractions, i.e. only one complementary fraction. In this case, the clay content in the mixture should not be lower than 0.4 wt.h. to preserve the connectivity and homogeneity of sol-ora. For the preparation of solutions, we used Spacaportland cement M 400 or Portland white cement M 400 and white quartz sand. For the preparation of composition 6 (by prototype), unfractionated sand was used.

In tab. 2 shows the physico-mechanical and technological characteristics of the solutions obtained. 0 The use of the proposed formulations makes it possible to completely avoid delamination and segregation and to ensure the viability of the mortar in excess of 2.5 hours. The presence in the proposed mortar amounts to 0.10 wt.h. used; pigments do not lead to a decrease in its physico-mechanical and technological characteristics, therefore, 0 in the table. 3 shows only the decorative and cost-effective intervals of the contents of each of the pigments and indicated the experimentally detected reasons, determining 1; the lower 5 limits :: s.

The proposed mortar makes it possible to reduce the water resistance (filtration coefficient) and linear 40 shrinkage after setting, as compared with the known composition. The physicomechanical and technological characteristics of this solution allow it to be used for finishing the exterior walls of living and public buildings 45 by spraying.

Sand fraction 2-4

4 2.8 64% 64%

Ratio of 0.25-0.63 26%

Ratio 0.03-0.1 10%

lina

Oh yeah ,

needle

26% 10%

0.4 0.48 0.75 0.75

26%, 26%

ten%

0.3 -0.4

0,70,7

28%

ten%

0.5

0.9

SurikOleum Jelly Goluzokoki-chromia same-0.1 bout -liptayy lotsi-0.04 anosnyy 0.06 yellow, or red 0.1

output 0.08

Indicators

The mobility of the solution, see precipitation cone

Compressive strength R, ffla

Filtration coefficient, cm / s

Frost resistance coefficient

Linear shrinkage after setting (180 days in air), mm / m

10.6 10.8 12

12.1 10, D 10.8

11.5 14.6 19.6 19

10.4 10.4

9-a-S g 9 -g

9-10 2.5- 10 2. 10 3-10 7-10 6-10

0.79 0.80 0.88 0.8 0.8 0.78 0.76

1.0

1.1

0.8 1.0 1.1 1.5

Table 1

. 2.4

72%

, 26%

0.4

0.7

four

64%

26%

28%

ten%

0.5 0.3

0.9 0.75

output 0.08

Table 2

Composition

12.1 10, D 10.8

10.4 10.4

0.8 1.0 1.1 1.5

Oxide yellow glands

0.05-0.10

Iron oxide red

0.05-0.10

Minium iron 0,04-0,10

Phthalocyan cyan

0.04-0.08

Chrome oxide

0.05-0.10

Soot

0.04-0.10

Editor K. Voloshchuk

Compiled by N. Fedorov

Tehred L.Oleynik Proofreader A, Tsk

Order 3769/25 Circulation 640 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

.Production and printing company, Uzhgorod, Project St., 4

Table 3

Economically impractical

Tone heterogeneity of color

Staining color

Tonova

color heterogeneity

Color Heterogeneity

Staining color

Claims (4)

1. BUILDING SOLUTION FOR FINISHING WORKS, containing, by weight, part 1 Cement 1 Clay 0.3-0.5 Fractionated sand 2.4-4. Water 0.7-0.9, characterized in that, in order to reduce shrinkage and water resistance, it contains sand, the sizes, fractions of which are set by the formula _t df = d ₀ (0.125-0.156) where d _o is the size of the largest sand fraction, d £ is the size of the complementary sand fraction J i is the serial number of the complementary fraction, and the mass quantities of each sand fraction are set by the formulas g ² / ^ml = ^m o ⁺ Z ^m i, = ¹⁰⁰ > where w _about - the amount of the largest fraction of sand to the total amount of sand, wt.%, - the same for the complementary fraction. * from 2. The solution according to p. 1, o, t l and h a-SS, with the fact that the amount of clay when using one complementary fraction of sand is 0.40.5 wt.h. 3. The solution according to paragraphs. 1 and 2, which consists in that, in order to obtain painted surfaces, it additionally contains weather-resistant pigment in an amount of 0.04 0.1 May. hours 4. The solution according to paragraphs. 1-3, characterized in that, as a pigment, it contains iron oxide yellow or iron oxide red, or red iron or phthalocyanine blue, or chromium oxide or soot. SU „„ 1244125 2 ^t 4 ^ ^t About 5 2 ^t about ⁺ 5 ^t o = 64%