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Asphalt warm mixing agent

A technology of warm mixing agent and asphalt, which is applied in the direction of building insulation materials, building components, building structures, etc., can solve the problems of low warm mixing performance and poor viscosity reduction effect, and achieve the effect of improving flow performance and high viscosity reduction performance

Inactive Publication Date: 2018-09-14
张芸
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a kind of asphalt warm mix agent in view of the low warm mix performance of the current asphalt warm mix agent when the dosage is small, and the poor viscosity reduction effect in the high temperature area.

Method used

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Examples

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preparation example Construction

[0021] The preparation method of warm mixing agent base material comprises the steps:

[0022] (4) Take maleic anhydride and add acetone at a mass ratio of 1:5, stir and mix for 20-30 minutes to obtain mixture a, take benzylamine and add acetone at a mass ratio of 1:7, stir and mix for 25-35 minutes to obtain stirred mixture b, Take the stirring mixture b and add it dropwise to the mixture a according to the mass ratio of 5:6, stir and mix at 40~50°C for 50~60min, filter with suction, and take the filter residue;

[0023] (5) In terms of parts by mass, take 15~20 parts of filter residue, 25~30 parts of toluene, 30~40 parts of N,N-dimethylformamide, 2~4 parts of p-toluenesulfonic acid, and heat up to 120~130 Stir and mix for 5~6 hours at ℃ to obtain a stirred mixture. Take the stirred mixture and add deionized water at a mass ratio of 1:10, let it stand for 3~4 hours, and filter with suction. Add ethanol with a mass fraction of 60% according to the mass ratio of 2:5 and mix to...

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Abstract

The invention discloses an asphalt warm mixing agent, and belongs to the field of a road pavement material. A polymer is obtained by using maleic anhydride and benzene methanamine as raw materials, performing substitution reaction by using N,N-dimethyl formamide and adding paratoluenesulfonic acid as a catalyst; waste and old tire rubber powder is used as raw materials; sodium hypochlorite and microwaves are used and combined for treating the raw materials, so that the stability and the high-temperature performance of activated rubber asphalt are more prominent; moisture in zeolite during themixing of the zeolite with hot asphalt and hot aggregates is converted into water vapor, so that the asphalt volume expands to form foam asphalt, so that the asphalt and the aggregates can be mixed and compacted at low temperature. The problems that under the condition of small mixing quantity of the existing asphalt warm mixing agent, the warm mixing performance is low, and the viscosity reduction effect in a high temperature region is poor are solved; the asphalt warm mixing agent is provided.

Description

technical field [0001] The invention belongs to the field of road paving materials, and in particular relates to a preparation method of an asphalt warm mix agent. Background technique [0002] The asphalt mixture used in road engineering in the past is generally divided into two types according to the mixing construction temperature: cold mix asphalt mixture CMA (Cold Mix Asphalt) and hot mix asphalt mixture HMA (Hot Mix Asphalt). Cold-mix asphalt mixture is generally mixed and paved with emulsified asphalt or liquid asphalt and aggregate at room temperature, without heating the aggregate and binder, which can save a lot of energy. However, the initial strength of cold-mix asphalt mixture is low, and it is difficult to meet the requirements of important projects such as expressways and heavy-duty traffic roads. Hot mix asphalt mixture is widely used and has good road performance. However, in the production process of hot mix asphalt mixture, asphalt and stone materials ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L19/00C08L33/10C08K13/06C08K9/02C08K9/04C08K7/26C08K3/32C08K3/02C08K3/36C08K3/22C08F220/18C08F220/56C08F222/38
CPCC08F220/18C08F220/1818C08K2003/023C08K2003/2206C08K2003/222C08K2003/2227C08K2003/2272C08K2003/324C08L19/003C08L95/00C08L2205/03C08L33/26C08K13/06C08K9/02C08K9/04C08K7/26C08K3/32C08K3/02C08K3/36C08K3/22C08F220/56C08F222/38
Inventor 张芸庄文琴胡晓玉
Owner 张芸
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