SU1316991A1 - Asphalt-concrete mix - Google Patents

Abstract

The invention relates to road construction materials and can be used for road and airfield pavements. The purpose of the invention is to reduce the swelling of asphalt concrete. Asphalt concrete mix contains 2.0-4.5% by weight of waste in the production of gasoline — a heavy pyrolysis resin with a viscosity of 3-5 s, 46.5-49.0% by weight of bitumen-containing rock with a content of 1.5–5%. 4 wt.% With a softening temperature of 101-145 C and the rest of rubble. Swelling of asphalt 0,0-0,2%. 2 tab. from 9 O5 CO UD

Description

The invention relates to road building materials and can be used to cover auto roads and airfields.

The purpose of the invention is to reduce the swelling of asphalt concrete.

The invention is carried out as follows.

The mixture is prepared by mixing on the road. The desired pyrolysis resin is mixed with a bitumen containing rock with a grain size of 0-5 mm, stirred for 3 minutes, and crushed stone is introduced into the resulting mixture.

The temperature of the preparation and laying of the mixture is 15 -.

Heavy pyrolysis resin - waste in the production of gasoline has the following physicochemical characteristics,

Content, wt.% On anhydrous mass: resin 25-30, oil 70-75; indene homologues 20-22. The composition of oils wt.%: The amount of components to naphthalene 25-26; naphthalene 23-25; dimethylindene 8-9; 1,2-methylnaphthalene 9-10 diphenyl 2.5-3.0; dimethylnaphthalene 8-9; acenaphthene 2.0 - 2.5; fluorene 2.0 -2.2; phenanthrene - anthracene 2.7 - 3.0; phenols and bases are absent.

The density of the resin at 20 ° C 1067-1068 kg / m. The flash temperature is 104-105 C. The pour point is -5 C. The viscosity is C IP. 3 - 5 s. The amount of evaporated substances when heated to 50 ° C is 4–5 wt.%, The net with sand and marble is satisfactory.

pyrolysis resin with viscosity

 .

ten

15

20

25

thirty

The quality of bitumen-containing rocks is as follows: bitumen-containing sandstones of the Ust-Voyiskoe deposit with a solid bitumen content of 2.5–4.0 wt.%, Softening temperature of bitumen 101-145 0; bitumen-containing siliceous-carbonate rocks of the Ashinsky field with a solid bitumen content of 1.5–2.5 wt.%, softening temperature of bitumen 110-131 ° C.

Examples of asphalt concrete mixes and the properties of the compositions are given in Tables 1 and 2, respectively.

Asphalt proposed composition has a slight swelling compared with the known.

Claims (1)

Invention Formula Asphalt concrete mixture, including petroleum in burning, bitumen containing rock and crushed stone, characterized in that, in order to reduce asphalt concrete production, it contains as petroleum burning in production of gasoline - heavy pyrolysis resin with viscosity Cjo 3 - 5 s, and bitumen-containing poro5 with bitumen content of 1.5-4 wt.% softening point 101-145 С Do with in the following ratio of components May.%: T resin wand pyrolysis2.0-4.5 Bituminous breed46,5-49,0 Crushed Table 1 3.25 3.25 4.5 Component Bituminous rock with bitumen content of 4% and 49 pt. - - k with a bitumen content of 2.5% and a softening temperature of 145 C - 47.75 - with a bitumen content of 2.5% with a softening temperature of 110 C - - 47.75 with bitumen content of 1.5% with a softening temperature of 131 ° C - - - 46.5 Rubble.49 49 49 49 table 2 Indicators Mix 23 4 Known Water saturation,% by volume 8.1 8.9 9.7 6.52-6.96 Swelling,% by volume 0.0 0.0 0.1 0.2 2.12-2.75 Compressive strength dry samples at 20 ° С, MPa 1.23 1.76 1.47 0.99 13.0-33.6 Coefficient of water resistance 0.97 0.96 1.0 0.84 Compiled by E. Bikbulatova Editor N. Kishtulinets Tehred A. Kravchuk Proofreader V. But Order 2389/21 Circulation 587 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d 4/5 Production and printing company, Uzhgorod, st. Project, 4 Continuation of table 1 The composition of the components in the compositions IZIIZZI