SU1146291A1 - Asphalt-concrete mix - Google Patents

Abstract

ASPHALT-CONCRETE MIXTURE, including organic sticking, mineral powder, sand and crushed stone, characterized in that, in order to reduce water saturation and increase the strength of asphalt concrete at 20 ° C, it contains synthetic fatty acid residues, and as a mineral powder-fly ash in the following ratio of components, wt.%: The bottoms of synthetic fatty acids 7-8 Fly ash 25-30 Sand8-10 RubbleOstal

Description

The invention relates to road construction and can be used in the device pavement.

Asphalt concrete is known for a mixture comprising organic seeding waste from the production of sebacic acid from castor oil, consisting, wt.%: A mixture of fatty acids 9-9.5, slaked lime 1.2-1.4 and mineral filler - the rest is l.

The closest in technical essence and the achieved result is asphalt concrete mix J2J, including, by weight%:

The product of heat treatment of waste production of sebacic acid from castor oil 7-8.5 Dolomite powder 3-13.7 Crushed stone or sand 77.8-88 The disadvantages of the known mixtures are low pizzochnost at 20 C and high saturation.

The purpose of the invention is to reduce water saturation and increase the strength of asphalt concrete at 20 C.

The goal is achieved by the fact that the asphalt-concrete mixture, which includes organic, mineral powder, sand and crushed stone, contains synthetic fatty acids (KOSHK) as stubble, and as mineral powder, fly ash in the following ratio of components, May. %:

KOSHK7-8

Fly Ash 25-30 Sand8-10

Crushed

: HFCS is a waste of the petrochemical industry, which is

Acid number, mg KOH Number of saponification, mg KOH Fatty acid mixture content,% Non-extractable content

substances (resins),% Content of mechanical, impurities,% Content-water,%

It is produced by distillation of synthetic fatty acids according to the intensity of the oxidation of paraffin wax and is a dark brown paste that turns into a liquid at 60 ° C.

Properties KOSZHK presented in Table. one,

Fly ash is the product of burning coal, oil shale or peat; it is a fine gray material. The chemical composition of calcined ash, includes,%:

SiO 42-60,5

, 9.98-34.2

FejO, 3; 20-13,5

CaO 3.20-28.3

MgO 1.2-4.3

SO, 0.2-5.82 + Chicken Footprints - 3.04

The technology for preparing the proposed warm asphalt mix is as follows.

COSMC is first dehydrated and then heated to a bituminous boiler. The mixture of sol-ash and mineral filler is also heated to 160 ° C. Then KOSZHK served in the mixer and at the same time in the mixer serves fly ash, gravel and sand. All components of the mixture are thoroughly mixed. Prepared asphalt mixture is placed in the road surface at a temperature not lower than 80 ° C.

The compositions of the proposed mixture are presented in table. 2

After testing the proposed mixtures, the results presented in Table 2 are obtained. 3

Asphalt mixture of the proposed composition has a high strength at 20 ° C and low water saturation.

Table 1

Indicators

72-107 106

86-86.5 12.7-13.0

0.3-0.5 0.5 31146291 Components. COSLCO Fly ash Sand Crushed stone fraction 5-10 mm Properties Compressive strength, MPa at temperatures. С: 2073 5023.4 О104 Water saturation, vol.% 1.2 I I table 2 iiirz :. 78 2530 108 5854. T a b l and c a 3 m C is known 6741.5-51 2218.4-44 9858-85 1.21.8-2.7

Claims (1)

ASPHALT CONCRETE MIXTURE, including an organic binder, mineral powder, sand and crushed stone, characterized in that, in order to reduce water pressure and increase the strength of asphalt concrete at 20 ° C, it contains distillation residues of synthetic fatty acids, and as a mineral powder - fly ash in the following ratio of components, wt.%: VAT residues of synthetic fatty acids 7-8 Fly ash Sand Rubble 25-30 8-10 Rest 3 ω from th h ©