SU1291585A1 - Foamer for making concrete mix porous - Google Patents

Abstract

The invention relates to building materials and can be used in the manufacture of concrete mixtures. The aim of the invention is to increase the multiplicity of the foam and its stability in cement paste. The foaming agent contains components in the following ratio, wt.%: Alkyl-: sulfates FR. l 0-ZO, higher fatty alcohols fr. C ,, - C, g 0.5–5.0, urea 10–30, butanol 5–15, water up to 100. Thanks to the high performance / lm of properties of technical foam, the fusion of the structure of ceram is provided. zitopenobetona. 3 tab. a (lu (x) sp 00 ate

Description

The invention relates to building materials and can be used in the manufacture of concrete mixtures, in particular for the expanded clay concrete.

The purpose of the invention is to enhance. the multiplicity of foam and its durability in cement paste.

The foaming agent of the proposed composition increases the foam multiplicity due to the content of alkyl sulfates of the C, p-C, C fraction and the stability of the foam in the cement paste due to the content of higher fatty alcohols of the fraction - C. The urea content contributes to the mutual solubility of the components and their solubility in water, and butanol increases the shelf life of the frother, prevents the precipitation of sodium sulfate from it, and also improves the solid form of the frother.

The compositions of the blowing agents are given in Table 1 (compositions 1-3 proposed compositions, 4-5 with foreign values)

The technology for producing keramzitopenobeton using the proposed frother is carried out in the following stages: first — preparation, foam in the foam generator, and the second — mixing foam with porcelain stoneware.

Table 2 shows the properties of the foam obtained using the proposed and known compositions, as well as compositions with foreign values (compositions 4-5).

As follows from Table 2, the addition of the C, –C fraction in the composition of alkyl sulfates in an amount below the lower limit leads to a sharp deterioration in the multiplicity and durability of the technical foam. Also to the deterioration of the properties of the foam is entering into the composition of higher fatty alcohols fraction Q | j below the lower limit. Increasing the number of components (above the upper limit) does not significantly affect the foaming

0

five

0

five

thirty

35

40

properties frother and economically impractical.

Table 3 shows the physicomechanical properties of expanded clay of open concrete with the use of the proposed and known foaming agents (compositions 4 and 5 with foreign values).

As can be seen from Table 3, to obtain 1 m of claydite foam concrete from the proposed foaming agent, it is consumed by 12% less cement, the density is 4.5% lower in comparison with the claydite foam concrete from a known foam former.

Due to the high properties of the technical foam of the proposed foaming agent, the structure of claydite foam concrete is fused, provided that it is properly transported, laid, and formed into a clay jelly foam mixture.

Thus, the foam obtained from the proposed blowing agent, compared with the foam obtained from the known blowing agent, has a Bbmie ratio of up to 25%, and the resistance coefficient is in. cement paste 10-12% more.

Claims (1)

Invention Formula A foaming agent for the porisation of a concrete mix, including alkyl sulfates, an additive and water, is enough because it contains alkyl sulfates of the С-С fraction to increase the foam multiplicity and durability in the cement paste. and as an additive higher fatty alcohols of fractions C, 2, urea and butanol in the following ratio, wt.%: five 0 Alkylsulphates of fraction-C, C Higher fatty alcohols of the С, 2 -C, g operation Urea Buganol Water 10-30 0.5-5.0 10-30 5-15 Else Alkyl sulphates fraction C. O-C, W Higher fat alcohol fractions 2030 35 table 2 250 245 1.15 1.15 , 930 925 0,69 0,59 Editor N. Gunke Compiled by O. Motorina Tehred A. Kravchuk Order 2021/28 Circulation 588 Subscription VNIISH1 USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Table 3 230 220 250 220 1.15 1.15 1.15 1.15 915 890 935 905 0.52 0.39 0.61 0.44 Corrector G, Reshetnik