SU885391A1 - Asphalt-concrete mix - Google Patents

Description

I

The invention relates to road building materials and can be used in the construction of roads.

An asphalt concrete mix is known, including bitumen, crushed stone, sand, mineral powder and organic fl.

Closest to the proposed technical essence and the achieved result is asphalt concrete mix 2J, which includes black organic sticking - coal tar, bleach, mineral powder, sand and crushed stone in the following ratio of components, weight. %;

Coal

five,

tar 2,

Lime chlorine Mineral Po8-12 powder

Crushed stone granite 35-45 ny Else Sand

These mixtures are characterized by inadequate water resistance of the resulting asphalt tone.

The purpose of the invention is to increase the water resistance.

The goal is achieved by the fact that the asphalt-concrete mixture, including black organic sticking, lime, mineral powder, crushed stone and sand, contains as black organic sticking tar, lime slaked, and crushed stone fraction 315 mm with the following ratio of components, wt.%:

Gudron5,0-5,5

Lime is grated 1, 0-2.0

Mineral powder9, 5-11 Crushed stone of fraction 3-15 mm46-50 Sand Else The asphalt-concrete mixture is prepared as follows.

Lime and tar are loaded into the mixer and mixed for 2-3 minutes. Then the resulting substance is mixed with mineral powder, sand and rubble.

In tab. I shows the mixtures of components prepared for the tests, in table. 2 - the results of these tests in comparison with the known composition.

Table 1

Continued table. one

5.5 5.0

5.2

ga2, 0 1.0

1.5

Bulk weight, g / cm 2.31

The porosity of the mineral composition, vol.% 18

Residual porosity.

Asphalt of the proposed formulations has a higher resistance compared with the known.

table 2

2.31

2.30

2.30

nineteen

18 Crushed stone of fraction 3–15 mm46–50 Sand Other Sources of information taken into account for expert examination 1. USSR author's certificate No. 571491, cl. From 08 L 95/00, 1976 .. 2. USSR Copyright Certificate No. 623373, cl. C 08 L 95/00, 1976.

Claims (2)

Claim Asphalt-concrete mixture, including black organic binder, lime, mineral powder, crushed stone and sand, characterized in that, in order to increase water resistance, it contains black organic tar, black lime and crushed stone fraction 3-15 mm in the following ratio components, wt.%: Tar Slaked lime Mineral Powder 5.0-5.5 1.0-2.0 9.5-11 Crushed stone fractions 3-15 mm 46-50 Sand rest Sources of information taken into account during the examination 1. USSR author's certificate No. 571491, cl. C 08 L 95/00, 1976- 2. USSR copyright certificate J No. 623373, cl. C 08 L 95/00, 1976.