Epoxy-polyurethane blending grouting material used for road engineering maintenance

A technology for road engineering and grouting materials, which is applied in the field of epoxy-polyurethane blended grouting materials, which can solve problems such as uneven stress, insufficient bearing capacity, and large pouring volume, so as to achieve little impact on traffic and reduce porosity , the effect of strengthening the roadbed

Inactive Publication Date: 2012-07-25
湖北省京珠高速公路管理处 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During construction and maintenance, vehicles have to bypass maintenance areas, which is unacceptable on very heavy traffic roads that require quick repairs, and this method is also expensive
Polyurethane grouting materials are not as good as epoxy resin grouting materials in terms of mechanical properties (such as compressive strength and bonding strength). Suitable for expressway subgrade repair
Altho

Method used

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  • Epoxy-polyurethane blending grouting material used for road engineering maintenance
  • Epoxy-polyurethane blending grouting material used for road engineering maintenance
  • Epoxy-polyurethane blending grouting material used for road engineering maintenance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022]

[0023] The preparation method comprises the following steps:

[0024] In a reaction kettle equipped with a condenser and agitator, mix polyurethane foam polyether YC-4110 and trimethylolpropane for rigid foam, start stirring evenly and heat up to 80°C, then add water, silicon -Carbon bond non-hydrolyzable foam stabilizer SD-601 and triethylamine are kept warm for one hour, and after cooling down, add epoxy resin curing agent T-31 and stir evenly to recover component A;

[0025] Mix polyphenyl polymethylene polyisocyanate (PAPI) and bisphenol A epoxy resin E-51 (epoxy value 0.51) uniformly at room temperature to obtain component B;

[0026] Stir and mix components A. and B evenly at room temperature.

[0027] The volume began to expand after 50s, and the gel solidified after 120s; the mechanical properties test results showed that the tensile shear strength was 2.3MPa, and the T-peel strength was 0.93 N / mm.

Embodiment 2

[0029]

[0030] The preparation method comprises the following steps:

[0031] In a reaction kettle equipped with a condenser and agitator, mix polyurethane foam polyether YC-4110 and pentaerythritol for rigid foam, start stirring evenly and heat up to 80°C, then add water, silicon-carbon bond Hydrolyzed foam stabilizer SD-601, dibutyltin dilaurate and triethylamine are kept warm for one hour, after cooling down, add epoxy resin curing agent 593 and stir evenly to recover component A;

[0032] Mix polyphenyl polymethylene polyisocyanate (PAPI) and bisphenol A epoxy resin E-51 (epoxy value 0.51) uniformly at room temperature to obtain component B;

[0033] Stir and mix components A. and B evenly at room temperature.

[0034] The volume began to expand after 50s, and the gel solidified after 100s; the mechanical properties test results showed that the tensile shear strength was 2.5MPa, and the T-peel strength was 0.99 N / mm.

Embodiment 3

[0036]

[0037] The preparation method comprises the following steps:

[0038]In a reaction kettle equipped with a condenser and agitator, mix polyurethane foam polyether YC-4110 and pentaerythritol for rigid foam, start stirring evenly and heat up to 80°C, then add water, silicon-carbon bond Hydrolyzed foam stabilizer SD-601 and dibutyltin dilaurate are kept warm for one hour, and after cooling down, add epoxy resin curing agent JA-1 and stir evenly to recover component A;

[0039] Mix polyphenyl polymethylene polyisocyanate (PAPI) and bisphenol A epoxy resin E-51 (epoxy value 0.51) uniformly at room temperature to obtain component B;

[0040] Stir and mix components A. and B evenly at room temperature.

[0041] The volume began to expand after 50s, and the gel solidified after 100s; the mechanical properties test results showed that the tensile shear strength was 2.8MPa, and the T-peel strength was 0.88 N / mm.

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Abstract

The invention relates to an epoxy-polyurethane blending grouting material used for road engineering maintenance, which is formed by blending a component A and a component B, wherein the component A comprises polyurethane white material and modified polyamine at a mass ratio of 100:1-20:1; the component B comprises phenyl methylene polyisocyanate and bisphenol-A epoxy resin at a mass ratio of 20:1-1:1 in the; and the use amount of the modified polyamine is 0.5%-10% the mass of the bisphenol-A epoxy resin. According to the invention, the epoxy-polyurethane blending grouting material can foam and expand and has excellent bonding performance, so that the using durability of a road is expected to be improved. Compared with a waterborne epoxy resin grouting material, the epoxy-polyurethane blending grouting material has foam expansion performance, can extrude a flabby substrate densely and has a better strengthening effect; and the using amount of the grouting material is saved, and the cost is greatly reduced.

Description

technical field [0001] The invention relates to an epoxy-polyurethane blended grouting material used for road engineering maintenance. Background technique [0002] With the rapid increase of highway traffic flow, the increase of vehicle load and the increase of service life, road surface diseases are becoming more and more obvious, especially the road surface pumping disease is particularly serious. Under the frequent action of heavy wheel loads, the base layer is out of contact with the surface layer due to the accumulation of plastic deformation, and the water seeps down along the joints and accumulates in the empty gaps. The wetted fine material is mixed into a slurry, which is splashed out along the joints, which is called "slurry". Moisture and pavement loading are the main causes of pumping disease. The generation of pavement disease not only affects the comfort and safety of driving, but also the expansion of cracks and water seepage make the degree of road damage ...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L63/02C08G59/50C08G18/66C08G18/48C08G101/00
Inventor 王凡昌李杰李满来舒鄂南张良均胡国祥尹梅马银卫谭勇钟昕葛新民张智伟李娜刘洋
Owner 湖北省京珠高速公路管理处
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