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A durable sealing layer for pavement or bridge deck and preparation method thereof

A bridge deck paving and durable technology, applied in the field of road or bridge deck pavement durable seal layer, road or bridge deck pavement durable seal layer and its preparation field, can solve the bonding performance between base layer and asphalt surface layer, The problem of poor crack resistance and waterproof performance can improve the initial anti-skid performance, good waterproof performance and good durability.

Active Publication Date: 2020-06-16
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects and deficiencies in the prior art, the present invention provides a durable sealing layer for pavement or bridge deck and its preparation method, which overcomes the problems of bonding performance between base and asphalt pavement, crack resistance and The defect of poor waterproof performance

Method used

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  • A durable sealing layer for pavement or bridge deck and preparation method thereof
  • A durable sealing layer for pavement or bridge deck and preparation method thereof
  • A durable sealing layer for pavement or bridge deck and preparation method thereof

Examples

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preparation example Construction

[0035] The preparation method of the above-mentioned durable sealing layer for road or bridge deck pavement specifically includes the following steps:

[0036] Step 1: Cut the waste ultra-high molecular weight polyethylene sheet into 10cm and boil it in 0.4% sodium carbonate boiling water solution for 30min. After washing and drying, extract with acetone in a Soxhlet extractor for 24h to remove After surface organic attachment, dry to constant weight in oven;

[0037] Step 2, soak the ultra-high molecular weight polyethylene sheet obtained in the above step 1 in a solution containing 0.5% V-50 initiator, under 400W microwave conditions, rise from room temperature to 80°C for 20 minutes at a constant temperature, and then pass through it once Padding (0.3MPa, 1m / min) to remove the initiator remaining on the surface, transfer the ultra-high molecular weight polyethylene sheet with the initiator to the aqueous solution containing water-based polyurethane monomer, and carry out th...

Embodiment 1

[0046] The present embodiment provides a durable sealing layer for road or bridge deck pavement, which is made of the following raw materials in parts by weight: 100 parts of mineral material, 15 parts of grafted ultra-high molecular weight polyethylene-waterborne polyurethane, emulsified 25 parts of asphalt, the grafted ultra-high molecular weight polyethylene-water-based polyurethane in the present embodiment, in parts by weight, is made of the following raw materials: 100 parts of ultra-high molecular weight polyethylene, 10 parts of water-based polyurethane, 3 parts of initiator . The emulsified asphalt in this embodiment is made of the following raw materials in parts by weight: 55 parts of asphalt, 2 parts of emulsifier, 3 parts of stabilizer, and 100 parts of water. A method for preparing a durable sealing layer for road or bridge deck pavement, specifically comprising the following steps:

[0047] Step 1: Cut the waste ultra-high molecular weight polyethylene sheet in...

Embodiment 2

[0055] The present embodiment provides a durable sealing layer suitable for road or bridge deck pavement, which is made of the following raw materials in parts by weight: 100 parts of mineral material, 15 parts of grafted ultra-high molecular weight polyethylene-waterborne polyurethane , 25 parts of emulsified asphalt, the grafted ultra-high molecular weight polyethylene-water-based polyurethane in the present embodiment, in parts by weight, is made of the following raw materials: 100 parts of ultra-high molecular weight polyethylene, 15 parts of water-based polyurethane, initiator 3 copies. The emulsified asphalt in this embodiment is made of the following raw materials in parts by weight: 55 parts of asphalt, 2 parts of emulsifier, 3 parts of stabilizer, and 100 parts of water. A method for preparing a durable sealing layer for road or bridge deck pavement, specifically comprising the following steps:

[0056] Step 1: Cut the waste ultra-high molecular weight polyethylene s...

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Abstract

The invention discloses a road or bridge deck pavement durable sealing layer and a preparation method thereof. The road or bridge deck pavement durable sealing layer is prepared by the following raw materials by weight: 100 parts of mineral aggregate, 10-25 parts of grafted ultra-high molecular weight polyethylene-waterborne polyurethane, 20-30 parts of emulsified asphalt, wherein the grafted ultra-high molecular weight polyethylene-waterborne polyurethane is prepared by the following raw materials by weight: 100 parts of ultra-high molecular weight polyethylene, 10-25 parts of waterborne polyurethane, 2.5-4.5 parts of an initiator, and the emulsified asphalt is prepared by the following raw materials by weight: 100 parts of water, 40-70 parts of asphalt, 2-5 parts of an emulgator, and 3-4parts of a stabilizer. The prepared modified emulsified asphalt has the good shock resistance, high adhesive property and good waterproof property, and other pavement performance is good. In addition, the waterborne polyurethane used by the composite material is superior to the solvent-type polyurethane obviously, so the composite material can be dispersed in the emulsified asphalt well and is not easily separated according to the hydrophilic property of the composite material.

Description

technical field [0001] The invention belongs to the field of road materials, and relates to a durable sealing layer for road or bridge deck, in particular to a durable sealing layer for road or bridge deck and a preparation method thereof. Background technique [0002] At present, most of the early diseases of pavement and bridge decks in my country are caused by poor interlayer contact or substandard performance of interlayer materials. For example, during the bridge deck paving process, there are generally poor interlayer adhesion and poor waterproof performance between the pavement layer and the bridge deck. The problem is that the former causes the surface layer to cause diseases such as pushing, crowding, waves, rutting, and even bridge deck tearing and peeling, while the latter causes water infiltration to cause looseness, potholes, and even direct corrosion of the beam body; semi-rigid base layers are common on asphalt pavements The problem of poor bonding performance, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C08G81/02C04B111/20
CPCC04B26/26C04B2111/20C04B2201/50C08G81/024C04B2103/0068C04B24/383C04B24/282C04B14/02C04B14/04
Inventor 王朝辉杨雪陈宝杨国林王新岐张勇强李林张套军李彪陈渊召高志伟
Owner CHANGAN UNIV
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