SU814938A1 - Asphalt-concrete mixture - Google Patents

Description

(54) ASPHALT CONCRETE MIXTURE

I

The invention relates to asphalt materials and can be used for lining canals, pools, screens and diaphragms of dams and dams.

An asphalt concrete mix is known, including crushed stone, mineral powder, sand and bitumen 1.

Asphalt concrete mix 2, which includes crushed stone, crushed aggregate less than 5 mm, mineral filler, fibrous filler, medium-grained sand and petroleum bitumen in the following ratio of components, wt.%, is closest to the proposed technical essence and the achieved result.

Crushed Stone 10-25

Stone crumbs of fraction Less than 5 mm 40-65 Mineral filler15-20 Fiber filler1-3 Medium-grained sand 15-25 Oil bitumen (over 100%) 7-10

The disadvantage of the known compositions; is their low strength and heat resistance.

The purpose of the invention is to increase the strength and heat resistance of the resulting asphasto concrete.

The goal is achieved by the fact that asphalt concrete mixture, including crushed stone, stone crumb fraction

o less than 5 mm, mineral filler and bituminous, additionally contains natural gravel-sand mixture fraction less than 10 ml, as a mineral filler - waste

5 cement plant - baking ga: sh, and as a bituminous bitumen-emulsion paste, with the following ratio of components, wt.%:

Rubble10-18

Kamenna a crumb of fraction less than 5 mm13-17

Cement Plant Waste - Baked Dust8-13

Bituminous Pasta12-15

Natural gravel-sand mixture of fraction less than 10 mm42-52 Moreover, bitumen-emulsion paste contains bitumen, lime, loess and water at a slypopets ratio of components, wt.%: Bitumen45 Lime-8 Less9 Water38 with lime, loess and water. Baked dust (waste cement plant) fraction less than 0.63 mm has the following composition: CaO 44.64; MgO 1.5; SiOj, 15.52; SOul 5; FeaO-j4.14f AijOj 4.38; ppt 28.32. The natural gravel-sand mixture of the Beeke open-pit mine is crushed stone.

Stone crumb fraction less than 5 mm

Dust baked

Bituminous Emulsion Paste

Natural gravel-sand mixture, fraction less than 10 mm Compressive strength limit; - Pa 16-10 39,8pri () with (Rgj,) 6 .10 Heat resistance coefficient Water resistance coefficient when tested under vacuum r “I.II ..- ТГ, . RSO

Elasticity coefficient

2.0-4.0 Residual porosity,% 6-20

Water absorption under

5-18 vacuum%

ten

18

17

13

15

17

13

ten

12

15

13

52

45

42 13,72, 41 2,3 2,33 13,0 9,7 7,0

5.67

Claims (2)

9.7 8.4 volume of weathering of igneous rocks, mainly granite.j Asphalt concrete mixture is prepared by mixing cold bitumen emulsion paste with mineral part, moistened to a moisture content of 57%. The resulting asphalt mix is laid in a cold state. The content of components in the proposed 1F1X compositions of the asphalt concrete mixture is given in Table 1. Comparative results isgalta-. The scientific research institute of a mix of a known composition and offered are given in table 2. The asphalt concrete of the proposed composition has increased strength and heat resistance, and laying in the cold state greatly simplifies the technology of the device facing. Table 1 0 51.0-105 41.18105 0 21.0-10 15.7 10 0.76 0.8 Claim 1. Asphalt concrete mixture, including crushed stone, stone crumb fraction less than 5 mm, minerfill and bituminous in It is characterized by the fact that, for the purpose of increased strength and heat resistance, it additionally contains a natural facet sand mixture fraction less than 10 mm, as a mineral filler - waste cement plant, sintering dust, and bitumen-emulsion paste in the following ratio of components, wt.%: Crushed stone 10-18 Stone crumb fraction and - less than 5 13-17 Waste of cement plant baked dust 8-13 Bitumen-emulsion paste 12-15 Natural gravel-sand mixture fraction less than 10 mm 42-32 2. Asphalt concrete mixture according to claim 1, characterized in that bitumen-emulsion paste contains bitumen, lime, and loess. water in the following ratio of components. wt.% Bitum45 Lime8. . Less9 Zoda38 Sources of information taken into account during the examination 1.Rybyev I.A. Asphalt concretes. M., VS, 1E69, p.354. 2. Notes on the design and installation of monolithic asphalt concrete linings of hydraulic structures, VSN-17-68, L., Energie 1968, p.19.