Bituminous pavement pit slot cold supplementing liquid based on unsaturated polyester resin and preparation method of bituminous pavement pit slot cold supplementing liquid

A technology of polyester resin and asphalt pavement, applied in building components, building insulation materials, buildings, etc., can solve the problems of inconvenient cold rehydration construction and no holding time.

Pending Publication Date: 2022-05-13
CHANGAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the viscosity of the existing water-based unsaturated polyester resin increases rapidly in the gel phase after the ind

Method used

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  • Bituminous pavement pit slot cold supplementing liquid based on unsaturated polyester resin and preparation method of bituminous pavement pit slot cold supplementing liquid
  • Bituminous pavement pit slot cold supplementing liquid based on unsaturated polyester resin and preparation method of bituminous pavement pit slot cold supplementing liquid
  • Bituminous pavement pit slot cold supplementing liquid based on unsaturated polyester resin and preparation method of bituminous pavement pit slot cold supplementing liquid

Examples

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preparation example Construction

[0028] A kind of preparation method of the asphalt pavement pothole cold replenishment fluid based on unsaturated polyester resin of the present invention, comprises the following steps:

[0029] Step 1: Mix the water-based unsaturated polyester resin, initiator, and polymerization inhibitor uniformly in proportion to obtain component A;

[0030] Step 2: Mix emulsified asphalt and compatibilizer according to the proportion, stir for 10-20 minutes to mix evenly, and obtain component B;

[0031] Step 3: Mechanically stir and shear the A component obtained in step 1 and the B component obtained in step 2. The preparation equipment is a high-speed shearing machine, the rotation speed is set to 5000r, the shearing time is 30min, and the temperature is room temperature, that is Get cold make-up fluid for asphalt pavement potholes.

[0032] 1. Determination of the dosage of polymerization inhibitor

Embodiment 1

[0034] Determination of component A in an asphalt pavement pothole cold replenishment material based on unsaturated polyester resin, prepared according to the following ratio:

[0035] According to the ratio of water-based unsaturated polyester resin: initiator: polymerization inhibitor = 100: 1.5: 0.2. The water-based unsaturated polyester resin is bisphenol A type water-based unsaturated polyester resin, the initiator is AWP, and the polymerization inhibitor is tert-butylcatechol.

[0036] The Rockfield viscometer (Brookfield, referred to as Brookfield viscometer) rotation method was used to measure the influence of different polymerization inhibitors on the viscosity of the aqueous UP at room temperature, and the stirring was continued at a stirring speed of 500 rap / s. It is known that the gel period reaches 3000mPa·s, which is still suitable for construction, so the residence time between the two is used as the evaluation index.

Embodiment 2

[0038] The difference between Example 2 and Example 1 lies in the ratio of water-based unsaturated polyester resin:initiator:polymerization inhibitor=100:1.5:0.3.

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Abstract

The invention provides an unsaturated polyester resin-based asphalt pavement pit slot cold repair liquid and a preparation method thereof, the raw materials comprise a component A and a component B, the mass ratio of the component A to the component B is 1: (5-10); wherein the component A comprises waterborne unsaturated polyester resin, an initiator and a polymerization inhibitor, and the polymerization inhibitor is tert-butylcatechol; the component B comprises emulsified asphalt and a compatilizer. And the addition of tert-butylcatechol enables the cold-patch liquid to have enough holding time, so that the construction quality safety is ensured, and the phenomenon that the viscosity is rapidly increased in the gel period after the induction period of the water-based UP is overcome.

Description

technical field [0001] The invention belongs to the field of patching materials for asphalt pavement potholes, and in particular relates to a cold replenishment liquid for asphalt pavement potholes based on unsaturated polyester resin and a preparation method thereof. Background technique [0002] The "2019 National Toll Road Statistical Bulletin" released by the Ministry of Transport in 2020 shows that by the end of 2019, the total mileage of national highways reached 5.0125 million kilometers, and the national toll road mileage reached 171,100 kilometers. With the increase of national highway mileage, highway maintenance has transitioned from the original "emergency repair era" to today's "comprehensive maintenance era". As of the end of 2019, the mileage of highway maintenance in my country has reached 495.31 kilometers, accounting for 98.8% of the total highway mileage. Therefore, in order to better protect the country's economic construction, we must pay more attention...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L67/06C08K5/13
CPCC08L95/005C08L67/06C08K5/13Y02A30/60
Inventor 张洪亮吕文江王琛锐孙梦青杨云杰王军礼钟岂涵刘彤魏同军
Owner CHANGAN UNIV
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