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Solvent-type cold-patch asphalt liquid and preparation technology therefor

A cold-filling asphalt and solvent-based technology, applied in building components, building insulation materials, buildings, etc., can solve the problems of poor strength, poor viscosity and fluidity of cold-filling asphalt mixture, etc., to improve the reinforcement effect and construction. Good workability and energy saving effect

Active Publication Date: 2016-02-24
CHANGAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cold patching asphalt mixture made of commonly used LBR cold patching additives has poor viscosity and fluidity, and poor strength.

Method used

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  • Solvent-type cold-patch asphalt liquid and preparation technology therefor
  • Solvent-type cold-patch asphalt liquid and preparation technology therefor
  • Solvent-type cold-patch asphalt liquid and preparation technology therefor

Examples

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preparation example Construction

[0027] Preparation technique of the present invention comprises the following steps:

[0028] (1) In parts by weight, heat 100 parts of petroleum asphalt to a molten state, then add 10 to 15 parts of diluent therein, and mix uniformly to make prepolymer A;

[0029] (2) Warm up 10-15 parts of heavy oil to 75-85°C in a reactor, add 1-5 parts of tackifier, mix well to make prepolymer B;

[0030] (3) Heat 10-15 parts of solvent oil to 45-55°C, add 1-5 parts of reinforcing agent, 0.2-0.8 parts of surfactant and 0.5-0.8 parts of anti-stripping agent in sequence, and mix evenly to make a pre- Polymer C;

[0031] (4) Mix prepolymer A, prepolymer B and prepolymer C evenly to make a solvent-based cold patch asphalt liquid.

[0032] The above mixtures are all stirred and mixed by using a high-speed shearing machine, and the rotating speed is 1500~3000r / min, and the step (1), step (2) and step (4) are all stirred for 10min. In the step (3), due to the addition of the additive Too much,...

Embodiment 1

[0036] (1) Preparation of prepolymer A according to the stated parts by weight, heating 100 parts of 70# petroleum asphalt to a molten state, then adding 10 parts of 10# diesel oil to it, and using a rotating speed of 2000r / min to cut the asphalt Dilution time is about 10min to make prepolymer A;

[0037] (2) Preparation of prepolymer B According to the stated parts by weight, heat 10 parts of heavy oil to 80°C in a reactor, add 1 part of coumarone resin, and stir evenly to make prepolymer B. The shearing time is about 10min;

[0038] (3) prepare prepolymer C according to the weight part, with 10 parts of C 1 Aromatic solvent oil is heated to 50°C in a reaction kettle, and 1 part of lignocellulose, 0.2 part of fatty alcohol polyoxyethylene ether and 0.5 part of PA-1 anti-stripping agent are added in sequence in order, and uniformly stirred to prepare For prepolymer C, the shearing time is about 15 minutes;

[0039] (4) Preparation of solvent-based cold asphalt liquid The mi...

Embodiment 2

[0045] (1) Preparation of prepolymer A According to the stated weight parts, heat 100 parts of 90# petroleum asphalt to a molten state, then add 10 parts of 0# diesel oil to it, and use a rotating speed of 2000r / min to cut the asphalt Dilution time is about 10min to make prepolymer A;

[0046] (2) Preparation of prepolymer B According to the stated weight parts, heat 10 parts of heavy oil to 80°C in the reactor, add 1 part of C 5 Aromatic petroleum resin, stir evenly to make prepolymer B, and the shearing time is about 10 minutes;

[0047] (3) prepare prepolymer C according to the weight part, with 13 parts of C 2 Aromatic solvent oil is heated up to 50°C in the reaction kettle, and 3 parts of wollastonite powder, 0.5 part of octadecyltrimethylammonium chloride and 0.5 part of AMR-II type anti-stripping agent are added in sequence, Stir evenly to make prepolymer C, and the shearing time is about 15 minutes;

[0048] (4) Preparation of solvent-based cold asphalt liquid The mix...

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Abstract

The invention relates to a solvent-type cold-patch asphalt liquid and a preparation technology therefor. The solvent-type cold-patch asphalt liquid comprises the following substances, by weight, 100 parts of petroleum asphalt, 10-15 parts of diluents, 10-15 parts of heavy oil, 10-15 parts of solvent naphtha, 1-5 parts of tackifier, 1-5 parts of strengthening agent, 0.2-0.8 part of surfactant and 0.5-0.8 part of anti-stripping agent. The above materials form performed polymers respectively and then are mixed uniformly, thus the obtained cold-patch liquid has good dispersibility, the stability of the obtained cold-patch asphalt liquid is raised, the storage stability is excellent, the employed tackifier, strengthening agent and anti-stripping agent can raise adhesion and strengthening effects of asphalt, and the surfactant can improve fluidity of asphalt substantially. The solvent-type cold-patch asphalt liquid is blended with aggregates when used to prepare cold-patch asphalt mixture for repairing pavement pits, no heating is needed during the blending process, the prepared cold-patch asphalt mixture has good initial and molding intensities and water damage resistance, and the construction workability is good.

Description

【Technical field】 [0001] The invention relates to the field of pavement pothole repair materials, in particular to a solvent-type cold patch asphalt liquid and a preparation process thereof. 【Background technique】 [0002] More than 90% of the highways in our country use asphalt pavement, but with the development of the traffic industry, the traffic volume is increasing day by day, and the road surface will inevitably be damaged by potholes. The past road repair materials mainly include hot mix asphalt mixture, emulsified asphalt mixture and cold recycled mixture. However, these kinds of repairing materials are greatly restricted by seasons and construction conditions. During construction, they need to be heated, pollute the environment and affect the health of construction workers, cannot be stored, and cannot repair road damage in time. Therefore, traditional methods are limited in many ways for road maintenance. [0003] Cold-patch asphalt mixture can repair road pits a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L91/00C08L45/02C08L57/02C08L97/02C08K3/34C08K5/19
Inventor 张争奇王志祥许铖宋亮亮黄方勇成高立尚同羊潘梦罗要飞余昕洁路国栋徐耀辉郭大同
Owner CHANGAN UNIV
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