SU1708819A1 - Binder - Google Patents

Abstract

The invention relates to the field of road building materials and can be used for road and airfield pavements. The purpose of the invention of the shadow is to reduce the temperature sensitivity in the holding and to increase the heat, crack and water resistance of asphalt concrete based on it. The slurry contains petroleum tar 22-72 wt.% And shale resin, oxidized to a particle temperature of 52-70 ° C. 28-78 wt.%. The temperature of softening in the presence of 36-59 ° C. Compressive strength at 0 ° C 3.8-12.0 MPa. at 20 '* C 2.4-4.6-MPa. at 50''S 1.6- 2.42 MPa. coefficient of long-term water resistance of 1.0-1.23. Table 4. The invention relates to road building materials and can be used for road and airfield pavements. The purpose of the invention is to reduce the temperature sensitivity of a tandem and increase the heat, crack and water resistance of asphalt concrete on its basis. The tampering is prepared by mixing oil tar oil with an oil shale resin oxidized to a softening temperature of 52-70 ° C. To obtain an oxidized oil shale resin, distilled resins are used from gas generator processing of Estonian combustible shale and Volga shale oil. s (distilled fractions distilled to 320 ° C) distilled from raw shale resins. The properties of distilled) x resins are presented in Table 1. The oxidation of distilled resins is produced at temperatures up to 180 ° C. The properties of oxidized distilled shale resins are presented in tab. 2. As a low-viscous component, oil tar with a softening temperature of 22 * 'C was used. conditional viscosity at 80''C 20 s. at 60 ° C 78 s. The properties of the resulting recipient are presented in table. 3. .-. On the basis of the proposed bushing, asphalt-concrete mixtures of particle size distribution of type B were prepared. The mineral part consisted of dolomite rubble, sand and mineral powder. The content in the tent is 9.5% by weight of the mineral part. The properties of the asphalt concrete obtained are given in Table 4. ~ 4. As can be seen from the above data, the proposed taper has a lower temperature sensitivity, and the asphalt concrete on its basis has increased heat, crack and water resistance. ^

Description

Formula AI 3 about b ete n and v,; including oil gud i oxidized shale resin, which differs from the fact that, in order to reduce its temperature sensitivity and increase the heat, crack and water resistance of asphalt concrete on its basis, it contains shale resin oxidized to a softening temperature of 52- 70 ° C. in the following ratio, wt.%:

Oil oil tar 22-72

Indicated oxidized

shale resin28-78

Table 1

table 2

T a b l and c a 3

Table 4

Claims (1)

Claim Astringent. including oil sludge and oxidized shale resin, characterized in that, in order to reduce its temperature sensitivity and increase the heat, crack, and water resistance of asphalt concrete based on it, it contains shale resin oxidized to a softening temperature of 52-70 ° C. in the following ratio of components, wt.%: Oil tar 22-72 5 Specified oxidized shale resin 28-78 Table 1 Shales The penetration depth of the needle, 0.1 mm, at t °, C Conditional viscosity. C at t, ° C 25 0 60 75 80 Estonian > 360 360 34 17 fifteen Volga region > 500 500 19 8 7 table 2 Raw materials for gas processing Duration of oxidation. g Properties of Oxidized Resins Needle penetration depth at 25 ° C, 0.1 mm Softening Point ° C Penetration index Estonian slans L " tsy 40 40 52 -1.2 Volga region slates 57 6.5 60 -2.5 Estonian slans tsy 48 8 70 ........ tPJ ............ * Example binder The softening temperature of the shale component, ° C The content of the shale component, May. % Oil tar content. wt.% Binder Properties Needle penetration depth at 25 ° C, 0.1 mm Softening point, ° C Penetration index Suggested 1 52 80.0 20.0 76 46.5 -1.2 2 52 78.0 22.0 80 46.5 -1.0 3 52 70.0 30.0 97 46 -0.5 4 52 48.5 51.5 150 40.5 -1.0 5 60 69.0 31,0 42 57 0,0 6 60 53.0 47.0 222 59 6.7 7 70 43.5 56.5 77 fifty 0.0 8 70 thirty 70.0 263 39 1.0 9 70 28 72.0 300 36 0.3 TO 70 26 74.0 400 - - 11 (prototype) 45 42 58 296 33 -1.9 Table 4 Astringent Residual porosity,% Water saturation,% of volume Swelling,% by volume Tensile strength Water resistance coefficient tii MPa, at t, C 0 20 fifty primary long According to the prototype 5.0 3.4 0.4 12.80 3.79 1.22 0.80 0.30 By an example table.Z 9 4.8 2,8 0,0 4.20 2.40 1,60 1.06 1.01 6 4.6 1.2 0,0 3.80 2,50 2.42 1.26 1.23 2 4.7 2,8 0.0 12.0 4.6 1.90 1.02 1.00