SU1085954A1 - Complex additive for concrete mix - Google Patents

Abstract

COMPLEX ADDITION FOR A CONCRETE MIXTURE based on one stripped off of molasses post-yeast bards, which is intended to increase the plasticity while maintaining strength, additionally contains the condensation product trimethylmelamine-dimethyl-urea sulfate at the following ratio of components, May. %; Evaporated molasses of post-fermented bard 20-50 Condensation product of trime tyololmelamino and dimethylol urea sulfonic acid 50-80

Description

X)

ate: about cd 4; I The invention relates to building materials, in particular, to the composition of complex additives used in the technology of making concrete and mortar mixes. Known complex additive for concrete mix lj, including. by weight of cement: sul4 1 yeast bard 0.03-0, sulphurized condensation product of melamine with formaldehy, 5; ohm The closest to the invention by technical essence to the achievable result is a complex additive 21, including, May. %: Evaporated mepassna of post-seasoned bard 98,8-99 The product of the interaction of alkyl imidazalines with an acid from the group: orthophosphoric, sulfuric, acetic About 8-1.2 Known complex additives to obtain concrete, juice, strength.

HOHoCHNC С I {

N N

NHCH2S05NO Ohchako well-known complex additives are characterized by a lack of concrete mixes. The purpose of the invention is to increase the plasticity of the concrete mixture while maintaining the strength of concrete. This goal is achieved by the fact that the complex additive for concrete CMecii based on one of the evaporated molasses of postpartum stillage contains in addition the condensation product trimethylolmelamine and dimethylol urea sulfate in the following ratio of components; May %: The evaporated molasses afterbirth: 20-50 111 bard grains) one way to the trimethylolmethamino and dimetrolol urea sulfate acid 30-80 II retry ryro additive, injected into the concrete mix with mixing water in a quantity of 053-2.0% masses of cement. The condensation product of trimethylolmel; -l1- and dimethylolurea sulphonic acid is obtained by copolycondene. SaSHTN sodium monosulfotrimetilolkelyayina and monosulfodimetilolm urea schzh 90 100 ° C and

C-NHCHr, -

HOHjCHNC I N

II

N

The ratio of components varies from 1 in the range of 1, 1 2: 1 molar ratios.

The result is a product with mol. May from 1500 to 3000 with a viscosity of 30-40 cP, highly soluble in water:

The concrete mix is ready as follows.

First, cement and aggregates are mixed in the mixer. The proposed complex additive is not introduced into the water gate. The resulting solution is added to a dry mixture of cement and aggregates.

and pergmep -slip to obtain a homogeneous composition.

Co:; woof concrete mix: cement: pegok; tseoen 1M ,, 93: 3,39 with cement consumption 350 kg / m at. Additive consumption: and Oj6% by weight of cement.

The composition of 51 additives and physical-mechatical methods of spruce are shown in the table.

The proposed complex additive allows not only to obtain highly plastic concrete mixtures, but also with a reduced consumption of the noBbiCHTb mixing water, concrete strength by 20-30%.

Offer

Notes: Examples 6 and 7 are given to justify the chosen ratio of components.

Claims (1)

COMPLEX ADDITIVE FOR CONCRETE MIX on the basis of one-off molasses post-yeast stillage vinasse, characterized in that, in order to increase ductility while maintaining strength, it additionally contains the condensation product of trimethylolmelamino and dimethylolurea sulfosulphonic acid in the following ratio of components, May. 7: One stripped molasses post-yeast bard 20-50 The condensation product of trimethylmelamine dimethylolurea urea sulfonic acid 50-80