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A cement concrete bridge deck waterproof bonding layer and preparation method thereof

A waterproof adhesive layer and cement concrete technology, applied in the direction of adhesives, adhesive types, asphalt material adhesives, etc., can solve the problems of expensive water-based epoxy resin, complicated production process, and difficulty in large-scale promotion, and achieve Conducive to popularization and application, simple production process and low price

Active Publication Date: 2016-08-24
南京交科瑞路技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, water-based epoxy resin is expensive, and the production process is complicated, and the molding strength is slow, so it is difficult to promote it on a large scale

Method used

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  • A cement concrete bridge deck waterproof bonding layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The asphalt-based emulsion in this example is selected from the NTTSS-1H low-grade asphalt emulsion produced by Blacklidge Emulsion Company. The Saybolt viscosity at 25°C is 43s, the evaporation residue content is 50%, the penetration is 12dmm, and the softening point is 68 ℃; the rubber-based emulsion adopts cationic styrene-butadiene latex (purchased in the market), and its solid content is 65%.

[0028] Weigh the above two emulsions by the following weight

[0029] NTTSS-1H 90kg

[0030] SBR latex 10kg

[0031] Heat the weighed NTTSS-1H and styrene-butadiene latex to 55°C, add the styrene-butadiene latex while the emulsified asphalt is stirring, the addition of the styrene-butadiene latex is to add the styrene-butadiene latex evenly within 40 minutes, and carry out 1 hour at a constant temperature After stirring, the waterproof adhesive layer material of this embodiment can be obtained.

Embodiment 2

[0033] The asphalt-based emulsion in this embodiment is selected from the NTCQS-1hLM low-grade asphalt emulsion produced by Asphalt emulsion company. The asphalt-based emulsion has a Saybolt viscosity of 35s at 25°C, an evaporation residue content of 52%, and a penetration of 11dmm. The softening point is 70.6°C; the rubber-based emulsion is a mixed rubber emulsion formed by mixing natural rubber emulsion and isoprene latex, and its solid content is 65%.

[0034] Weigh the above two emulsions by the following weight

[0035] NTCQS-1hLM 50kg

[0036] Isoamyl Latex 25kg

[0037] Natural rubber latex 25kg

[0038] Heat the weighed NTCQS-1hLM, isoprene latex, and natural rubber emulsion to 55°C, and add the mixed rubber emulsion under the stirring state of NTCQS-1hLM. The mixed rubber emulsion is added slowly within 1 hour. After stirring for 2 hours, the waterproof adhesive layer material of this embodiment can be obtained.

Embodiment 3

[0040] The asphalt-based emulsion in this example is made from a self-made hard emulsified asphalt, and the emulsified asphalt is obtained through the following steps.

[0041] The first is the preparation of intermediate materials. Select: No. 30 petroleum asphalt as low-grade asphalt, with a penetration of 15dmm and a softening point of 93°C; polyphosphoric acid with a H3PO4 content of 105% as an emulsifying additive; Polyethylene wax is used as a modifier; the asphalt emulsifier is fast-cracking and fast-setting type, and the cationic asphalt emulsifier EM44 from Akzo Nobel Company is used in this example; orthophosphoric acid is used as the acid-base regulator. Above-mentioned each material and water are weighed by following weight:

[0042] No. 30 petroleum asphalt 60kg

[0043] Polyphosphoric acid with H3PO4 content of 105% 1kg

[0044] Polyethylene wax with a melting point of 135°C 3kg

[0045] EM44 0.2kg

[0046] Orthophosphoric acid 0.2kg

[0047] Water 35.6kg

...

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Abstract

The invention relates to a waterproof tack coat material of a cement concrete bridge floor. The waterproof tack coat material is composed of asphalt base emulsion and rubber base emulsion, wherein the asphalt base emulsion accounts for 60-90% of the total mass, and the balance is the rubber base emulsion. The emulsified asphalt prepared by the waterproof tack coat material has the advantages that formation speed is high, and resultantly construction efficiency is improved; bonding strength is high and equal to that of water-borne epoxy resin asphalt; cost is low and equal to a half of that of the water-borne epoxy resin asphalt; production process is simple and popularization and application are facilitated.

Description

technical field [0001] The invention relates to a waterproof bonding material, in particular to a cement concrete bridge deck waterproof bonding layer and a preparation method thereof. Background technique [0002] From top to bottom, the bridge deck pavement system includes the lower bearing deck, the waterproof adhesive layer and the upper layer of asphalt mixture pavement. Bridge deck pavement is an important part of the bridge structure, and it is the extension of the road surface on the bridge to meet its functional requirements. The quality of the pavement directly affects the driving safety, comfort, durability and economic and social benefits of investment. Among them, the waterproof bonding layer is an important part of the cement concrete bridge deck pavement. The waterproof layer not only needs to achieve the purpose of waterproofing, but also needs to achieve the role of interlayer bonding. Due to the important role of the bridge deck waterproof adhesive layer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/00C09J195/00C09J107/02C09J109/10C09J109/08C09J109/04C09J123/22C09J111/02C09J123/16C09J133/00
Inventor 王文峰吴春颖刘伟牛晓伟
Owner 南京交科瑞路技术有限公司