SU1231042A1 - Compound for impregnating concrete - Google Patents

Description

eleven

The invention relates to construction materials, in particular, compositions intended for the installation of steam and waterproofing coatings in the manufacture of reinforced concrete structures, such as roofing slabs.

The purpose of the invention is to increase the shelf life of the composition and reduce the vapor permeability of concrete,

In tab. 1 shows the proposed cocta compositions.

Table

28 65

2

thirty

67.5

2.5

32 70 3

Shelf life without stratification, days

Durability (according to accelerated climatic testing), years

Vapor permeability coefficient

x10 g / (m.h-Pa)

Filtration coefficient, U cm / s

The depth of penetration of the composition into concrete mm, with

M 200

M 600

Frost resistance, cycles

31042I

The proposed composition is prepared I. as follows.

First, bitumen is dissolved in white-spirit in any available way (holding pieces of bitumen in white-spirit for 5-6 hours or feeding hot bitumen into a solvent). Then, dispense ethyl silicates and mineral spirits with merchants of 2–3 liter, alternately 10, pour them into the mixer and mix thoroughly for 4–5 minutes to obtain a uniform color mass. The storage time of the impregnating composition

not less than 6 months, as bitzgm, which is a stabilizing additive, does not allow the composition to exfoliate.

The tar of silicates (TU 6-02-5- -9-81) is a mixture of orthosilicic acid polyesters and has the formula {Si - (° Ms) «e.

In tab. Figure 2 shows comparative data of concrete impregnated with the proposed and known compositions.

Table 2

180 180 180

90

86

0.750.8

1.51.0

54

1.1

6.0

300

300

300

312310424

As can be seen from the table. 2, concrete, protect- The use of concrete construction

Schenny proposed composition, i-designs, impregnated offer

em is smaller compared with the known composition, in rooms with a higher vapor permeability coefficient, a different humidity (60-75%) provides

filtration of water, and durability for reliable protection of reinforcement of concrete and

compressing the impregnated concrete does not reduce the insulation from steam penetration and

shagas .wlagi.

The introduction of bitumen increases the time. The use of bitumen as stabilizing the composition up to 180 days, which allows the

It is ready to prepare the intended formulations io preparation, delivery and application

centrally and stored in stock. Compositions on the construction site,

Claims (2)

ί (5 7) A COMPOSITION FOR IMPREGATING BE'TON, including an organosilicon compound and a solvent, due to the fact that, in order to increase the shelf life of the composition and reduce the vapor permeability of concrete, it contains as an organosilicon compounds of ethyl silicate resin, and as a solvent white spirit and additionally bitumen in the following ratio of components, parts by weight: Resin ethyl silicate of white spirit Bitumen 28-32 65-70 2-3