SU1449557A1 - Binder for road=making mixtures - Google Patents

Description

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The invention relates to construction materials, in particular, compositions for road mixtures, used for the construction of roads, ploads, etc.

The aim of the invention is to increase the strength and water resistance, and also to reduce water saturation and swelling of the hardened road mixture.

Tetraethoxysilane (additive) is hydrolyzed under alkaline conditions to form polysilicon esters and Silicic acid gel. Further hydro- biz on the ethoxy groups of polyesters leads to the formation of solid products. At the same time, there is an interaction of tetraethoxysilane and the products of its hydrolysis with the hydroxyl-containing components of Portland cement. Finally, polyethers and silica gel acquire hydrophobic properties, clog the pores and capillaries in the hardened road mixture, and also form a hydrophobic film on the surface.

Milonaph, which is dissolved in the bottoms of chlorfinil production, additionally increases the hydrophobicity of the hardened road mixture, which ensures its working properties.

The binder is prepared in a specific manner.

First, the bottoms residue of vinyl chloride production is mixed with furfural and the aqueous emulsion of tetraethoxysilane prepared in advance on the high-speed emulsifier is introduced into this mixture and mixed. Then, the mixture of fatty acid distillation and mylonaph is successively introduced into this mixture, mixed, and the required amount is added.

stir for another 3-5 minutes until a homogeneous mass is obtained.

After that, the binder is introduced into the aggregate (black crushed stone, sand, soil) and stirred for 5 minutes until a homogeneous mass is obtained. The binder is injected in black crushed stone in the amount of 15-25% of its mass, and in the sand and soil in the amount of 8-12%.

The binder compositions on which the road mixtures were prepared for testing are listed in the table below. one.

The tests were carried out on sample cylinders with a diameter and height of 50 mm according to standard methods.

The compositions of the road mixtures on the proposed second gear and the results of their tests are presented in Table. 2

Claims (1)

Invention Formula Binder for road mixes, including Portland cement, furfural, vat residue of the distillation of fatty acids and vat residue from the production of vinyl chloride, characterized in that, in order to increase strength and water resistance, as well as reduce the water content and swell the hardened road mixture, additionally contains tetraethoxysilane and mylonaph in the following ratio, wt.%: five 0 five Portland Cement Furfural Vat residue from the distillation of fatty acids Vat residue from the production of vinyl chloride Tetraethoxysilane Mylonaft 30-40 1.0-2.0 16-20 28-32 0.5-4.5 11.5-14.5 Table 1 Portland Cement Furfural Fatty acid bottoms residue VAT residue production of vinyl chloride 30354040.4635.8947.0 1.51.0 2.01.151.033.0 20161818,516,4125 29.5. 322837,032,8225 Component Tetraethoxysilane No. Shonaft The content of components, wt.%, In the composition  L J I I 1 famous, 5 2.5 0.5 2.89 14.5 13.5 11, 5 - 13.85 Continuation of table 1 Continued table. 2 H49557 8 Extension of Table 2