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Waterproof material for high-speed rail

A waterproof material and high-speed rail technology, applied in the field of coatings, can solve the problems of reducing the bearing area of ​​steel bars, reducing the utilization rate of steel bars in bridges, and aggravating the freeze-thaw damage of concrete, achieving excellent mechanical properties, simple and stable construction process, and low cost. Effect

Inactive Publication Date: 2017-01-04
王斐芬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the existence of these cracks in use, rainwater or bridge water can easily enter the concrete, thereby aggravating the freeze-thaw damage of the concrete, especially in the northern region, the method of sprinkling salt and melting snow often used in winter will cause ice and salt water to enter the steel bars Corrosion of steel bars in the process reduces the load-bearing area of ​​the steel bars, which is equivalent to reducing the steel bar utilization rate of the bridge, and eventually damages the bridge

Method used

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  • Waterproof material for high-speed rail
  • Waterproof material for high-speed rail

Examples

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Effect test

Embodiment 1

[0036] For high-speed iron waterproof materials, the mass ratio of component A and component B is 1:1. Raw materials of component A (parts by weight): 100 parts of polyether DL-2000D, 5 parts of triisooctyl phosphite, 14 parts of 4,4'-methylene bis(phenylisocyanate), graphene / methanesulfonate 10 parts of acid solution, 6 parts of triethyl citrate. Component B raw materials (parts by weight): 66 parts of amino-terminated polyether, 30 parts of amine chain extender.

[0037] The amino-terminated polyether is obtained by uniformly stirring and mixing amino-terminated polyether D2000, amino-terminated polyether D400, and amino-terminated polyether T403 at a mass ratio of 1:1:1.

[0038] The amine chain extender is composed of 4,4'-diamino-3,3'-dichlorodiphenylmethane, 1,3-diaminomethylcyclohexane, and diethyltoluenediamine in a mass ratio of 1:1:1 Stir and mix to get even.

[0039] Preparation of high-speed rail waterproof material:

[0040] (1) Add polyether DL-2000D and tri-...

Embodiment 2

[0044] It is basically the same as Example 1, except that the amino-terminated polyether is obtained by stirring and mixing the amino-terminated polyether D400 and the amino-terminated polyether T403 at a mass ratio of 1:1. . Obtain the high-speed iron waterproof material of embodiment 2.

Embodiment 3

[0046] It is basically the same as Example 1, except that the amino-terminated polyether is obtained by stirring and mixing the amino-terminated polyether D2000 and the amino-terminated polyether T403 at a mass ratio of 1:1. . Obtain the high-speed iron waterproof material of embodiment 3.

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Abstract

The invention discloses a waterproof material for high-speed rail. The waterproof material for the high-speed rail comprises a component A and a component B, wherein the component A is prepared from, by weight, 98-102 parts of polyether polyol, 1-10 parts of plasticizer, 10-20 parts of 4, 4'- methylene bis (phenyl isocyanate), 4-28 parts of graphene / methane sulfonic acid solution and 6-48 parts of addition agent; the component B is prepared from, by weight, 52-78 parts of amine-terminated polyether and 22-38 parts of amines chain extender. The waterproof material for the high-speed rail is simple and stable in construction technology, low in cost, and has excellent mechanical performance, waterproofness and weather resistance, and can be applied to protection of the concrete for the high-speed rail.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a high-speed rail waterproof material. Background technique [0002] With the rapid development of the high-speed railway industry and the high-standard requirements for high-speed railways, there are more and more bridges and viaducts for high-speed railways. The high-speed rail bridge adopts the structural form of simply supported beams used in urban bridges, and the bridge is made of reinforced concrete. Therefore, the negative bending moment of reinforced concrete in the high-speed rail bridge and the concrete bridge deck are subject to high-speed vibration caused by repeated loads from trains. , tensile shear and huge impact, and after the shrinkage and expansion caused by temperature and humidity caused by the climate change of the external environment, the concrete bridge will produce some fine cracks, although these cracks cannot be reduced in a short period of time. Th...

Claims

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Application Information

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IPC IPC(8): C08G18/10C08G18/66C08G18/48C08G18/50C08K13/02C08K5/521C08K5/11C08K3/04C08K5/42C08K3/26C08K3/34
CPCC08G18/10C08G18/4804C08G18/5024C08G18/6651C08G18/6662C08K3/04C08K3/26C08K3/34C08K5/11C08K5/42C08K5/521C08K13/02C08K2003/265C08K2201/014
Inventor 王斐芬
Owner 王斐芬
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