RU1770302C - Raw mixture for preparation of laying solution - Google Patents

Description

The invention relates to the building materials industry and can be used in the manufacture of mortar for masonry walls from blocks based on fogizol in areas with high seismicity.

Known mortar, including the following components, wt.%: Portland cement9

lime10

silica sand 81.

A disadvantage of the known solution is the low adhesion to the fogizol blocks, which prevents the use of this solution in masonry for areas with increased seismicity.

The closest in technical essence and the achieved result is a composition comprising wt.% Lime 2-10, silica-containing material 1-25, phosphogypsum - the rest.

A disadvantage of the known composition is the low adhesion strength of the fogizol blocks.

An object of the invention is to increase the adhesion of fogizol blocks.

Example of a specific embodiment of the invention.

To produce the raw material mixture, ash is used - entrainment of the following chemical composition:

p.p.p. 1.09

SI0250.5

A120z „21.38

RedOz11.88

ZY2akt-13.60

CaO9.18

MdO1.63

TU20.84

80s0.92

AlzOa Act 8.57

N3200 69

KaO1.64

299.55

N | J O W O U

The ash of the active components SiQa and A1203 respectively contains 13.60% and 8.57%.

In the proposed composition, phosphogypsum is used without preliminary heat treatment, in its natural state.

The chemical composition of phosphogypsum is the following,%

p.p.p. - 12.18 CaO -28.58 TJa-0.2 P20b -2.02 Alz03-0.73 MgO-traces of Na.0 -0.11 F-0.17 Re20z-0.35 80z-40.5 K20-0.08 2- 99.52.

Phosphogypsum up to 84-90% consists of gypsum CaSCto 2H20,

Mortar was prepared in the following sequence. The calculated amount of water was poured into the mixer, 46-0.49 / then phosphogypsum was loaded, mixed for 1-2 minutes, after which fly ash, lime and aluminum powder were loaded. All raw materials were mixed for 2-3 minutes until a homogeneous mixture was obtained. Fogizol stones were bonded using mortars of the appropriate composition to determine the normal adhesion according to GOST 24992-81 and the obtained values corresponded to seismic conditions.

Table 1, 2, 3 shows the composition of the raw mix and the properties of the mortar.

From the above data it follows that the proposed masonry mortar has a higher adhesion of fogizol blocks and can be used for masonry in seismically hazardous areas.

Claims (1)

SUMMARY OF THE INVENTION A raw material mixture for the preparation of a masonry mortar, including lime, phosphogypsum and a silica-containing material, which, in order to increase the adhesion strength, as a silica-containing material, it contains fly ash and additionally aluminum powder in the following ratio of components, wt.% .: lime - 10-12; phosphogypsum - 30-40; fly ash - 47.98-59.975; aluminum powder - 0.02-0.025. The composition of the mixtures, weight. % Table 1 table 2