Common high-solid-content medium temperature pitch and preparing method thereof

Abstract

The invention discloses common high-solid-content medium temperature pitch and a preparing method thereof. The common high-solid-content medium temperature pitch comprises 75-82 parts of matrix pitch, 1-3 parts of common medium-temperature modifying agent and 16-23 parts of water. The common medium-temperature modifying agent comprises, by mass, 5-10 parts of 18 / 16 tertiary amine, 5-12 parts of cationic additive, 1-5 parts of methyl alcohol, 40-50 parts of emulsifying agent, 1-3 parts of calcium chloride and 5-20 parts of deionized water, wherein the cationic additive is selected from 3-chlorine-2-hydroxypropyl-trimethylammonium chloride and trimethyl-dodecylammonium chloride; the emulsifying agent is selected from styrene-butadiene-styrene, butadiene styrene rubber, polyethylene, acrylonitrile-butadiene-styrene copolymer and high-polymer polypropylene and polystyrene. The pitch prepared with the method is wide in construction temperature range, construction can be carried out under the weather condition of being higher than -5 DEG C, and the requirement of road maintenance at the low temperature is met.

Description

technical field [0001] The invention relates to the preparation technology of asphalt in the field of road engineering, in particular to a common medium-temperature asphalt with high solid content, and also relates to a preparation method of the common medium-temperature asphalt with high solid content. Background technique [0002] Base asphalt is used to produce modified asphalt, which is modified by adding asphalt modifier. If it is petroleum asphalt obtained by exploiting and refining oil, it is also the base petroleum asphalt. For example, specifically, No. 70 Grade A asphalt is a common paving material. No. 70 A-grade asphalt is a natural substance extracted from petroleum. It is heated and mixed with aggregate to form asphalt mixture during construction. During construction, the heating temperature of No. 70 A-grade asphalt is 155-165°C. Asphalt will continue to age when heated for a long time, and it will begin to age when the temperature reaches 100°C. [0003] ...

AI Technical Summary

Problems solved by technology

[0006] 2. Aging during transportation, storage and heating

[0014] How to prevent the aging of asphalt during construction has always been a difficult problem recognized by those skilled in the art and the direction of hard exploration, but so far no satisfactory technical solutions have come out

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