SU620495A1 - Mix for road pavement and method of preparing same - Google Patents

Description

one

The invention relates to road construction, in particular, to a mixture dp of a paving device and a method for its preparation.

A mixture of dp paving devices is known, including bitumen and mineral materials {l.

The most important to the invention by its technical essence and the achieved effect is the mixture for the pavement device, including bitumen binder, epoxy resin, curing and stone material 2J.

However, lime mixtures have insufficient water resistance obtained on the basis of their pavements, as well as a short period of easy-to-treat.

The purpose of the invention is to increase the water resistance of the coating and increase the period of workability.

This is achieved in that the mixture for the pavement device, the bitumen bond, the epoxy resin, the hardener, and the stone material.

2

additionally contains an aqueous solution of hydrochloric acid in the following ratio of components, wt.%:

Bituminous Binder6,4-8,1

Epoxy resin, 6-0.8

Hardener, 2-O, 3

Aqueous solution of hydrochloric acid 0.2-0.6 Stone material The rest of which, the mixture contains a 1% aqueous solution of hydrochloric acid, and as a bitumen binder, the mixture contains: cation-active bitumen emulsion corresponding to wt.%:

Bitum45, Q-5O, 0

Emulsifier1.5-1.8

WaterEverything

The mixture as an emulsifier contains the product of the reaction of the diethenylpolyamine with the carboxylic acids.

A known method of preparing a mixture for a pavement device includes mixing epoxide, 5mols, and a bitumen binder, followed by

an introduction to the resulting stone material. ...

The difference in the way in which the proposed mixture is prepared to be prepared is that an aqueous solution of hydrochloric acid is first introduced into the epoxy resin, together with a hardener, after which it is mixed with a bituminous binder and then with a stone material.

The moisture content of the stone material can vary from 0 to 5%. The components of the mixture are mixed to a uniform state without heating. The introduction of a 1% solution of hydrochloric acid into the epoxy resin slows down the epoxy resin hardening reaction, due to which it is possible to extend the period of workability of the mixture compared to the prototype 3-4 times. A new order of operations and the use of bitumen emulsion instead of bitumen and bitumen emulsion allows combining, without heating, a viscous epoxy resin with a viscous oil bitumen and processing bitumen-epoxy in a cold wetting stone material. Examples Three of the most characteristic mixtures were prepared with the predicted values of the ingredients at a ratio of 1% aqueous solution of hydrochloric acid and hardener 1: 1 and 2: 1. The mixture was prepared in a mixed installation using the described sequence of technopological operations. Easy to process

The mixtures were evaluated by the coefficient of compactibility of the samples formed at regular intervals after mixing. The capacity factor was calculated by dividing the density of the samples, 40

prepared from mixtures and aged in air at 20 ° C. Specified time for the density indicator of samples prepared immediately after mixing the ingredients. The properties of the mixtures vary smoothly without extreme values as the ratio of ingredients changes within the specified limits.

Table 1 shows the composition of the samples.

The moisture content of the stone material in the manufacture of mixtures in compositions 1-3 by heating and drying materials, as well as shortening the mixture preparation cycle, has the effect that in monetary terms will be approximately 5OO1000 rubles. for each lOQQ m coverage. Table. 5%, in a known composition - O. In table. 2 shows the properties of the compositions of the samples. Extending the period of workability of mixtures allows to mechanize the process of work on the device coatings and the preparation of mixtures. In addition, it is possible to increase the range of transportation of mixtures, which creates favorable conditions for their centralized preparation using high-performance mixers. The mixture can be prepared in any concrete mixers equipped with paddles for forced mixing. Due to the presence of water in the wet stone material, the mixture does not stick to the walls of the container and the blade. The use of wet stone materials without heating and drying helps to improve sanitary working conditions, since no dust is generated. Fuel economy, liquidation operations

Table 2.