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A kind of solvent-type cold patch asphalt liquid and its preparation process

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. The effect of good workability and excellent high temperature stability

Active Publication Date: 2018-10-19
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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  • A kind of solvent-type cold patch asphalt liquid and its preparation process
  • A kind of solvent-type cold patch asphalt liquid and its preparation process
  • A kind of solvent-type cold patch asphalt liquid and its preparation process

Examples

Experimental program
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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 process thereof, comprising the following materials in parts by weight: 100 parts of petroleum asphalt, 10-15 parts of diluent, 10-15 parts of heavy oil, 10-15 parts of solvent oil, 1-5 parts of tackifier, 1-5 parts of reinforcing agent, 0.2-0.8 parts of surfactant and 0.5-0.8 parts of anti-peeling agent. The above substances form prepolymers and mix evenly, so that the obtained cold replenishment fluid has good properties. The dispersibility is beneficial to improve the stability of the obtained cold-patched asphalt liquid, and the storage stability is excellent. The tackifier, reinforcing agent and anti-stripping agent used in it can improve the adhesion and reinforcing effect of asphalt. Surfactant It can significantly improve the fluidity of asphalt, and can be directly mixed with aggregates to prepare cold-patch asphalt mixture for repairing road surface pits. No heating is required during the mixing process, and the cold-patch asphalt mixture prepared has very good properties. It has excellent initial and forming strength, water damage resistance, and its construction workability is also 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 Patents(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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