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Method for preparing and using foaming epoxy resin base grouting material for treating concrete floor empty drum

A technology of epoxy resin and grouting materials, which is applied in construction, building maintenance, building construction, etc., can solve problems that have not been seen yet, achieve good perfusion effects, save perfusion materials, and have good adhesion

Inactive Publication Date: 2009-10-07
BEIJING FUHEJIN BUILDING REPAIR TECH CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has been no relevant research report on the use of foamed epoxy resin-based grouting materials for the treatment of concrete floor voids in China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Weigh according to the mass ratio: bisphenol A epoxy resin E44 is 100, diglycidyl ether reactive diluent is 12, ethanol diluent is 10, polyamide curing agent is 50, and aluminum powder foaming agent is 0.1, saturated NaOH solution is 0.5, stir and mix evenly, make grouting material for later use.

[0023] 2. Use electric hammer and other drilling tools to drill holes in the hollow and cracks on the ground, install grouting nozzles in the drilled holes, and seal the cracks to avoid leakage during filling.

[0024] 3. Pour the grouting material prepared according to 1 into the storage tank of the pressure grouting equipment, and use the pressure grouting equipment to pour the grouting material into the hollow and cracks of the concrete floor through the grouting nozzle. The pouring sequence starts from one end, and the single holes continue one by one. When the adjacent holes begin to produce grouting, keep the pressure for 3-5 minutes to stop the grouting of this hole and...

example 1

[0025] The foamed material obtained in Example 1 was cured into a closed-cell material with uniform foam density, a volume expansion rate of 11%, a compressive strength of 22.5 MPa, a tensile strength of 10.2 MPa, and a steel-steel tensile shear strength of 5.2 MPa.

Embodiment 2

[0027] The material and mass ratio of step 1 is changed to: bisphenol A epoxy resin E51 is 100, phenyl glycidyl ether reactive diluent is 15, ethanol diluent is 8, triethylenetetramine curing agent is 12, aluminum powder The foaming agent is 0.2, and the saturated NaOH solution is 0.5. Stir and mix evenly to make a grouting material. The obtained grouting material is cured into a closed-cell material with uniform foam density, a volume expansion rate of 17%, a compressive strength of 18.5MPa, a tensile strength of 5.7MPa, and a steel-steel tensile shear strength of 4.8MPa.

[0028] Precautions

[0029] 1. Master the setting time of epoxy resin material, thinner and curing agent at different temperatures, and correctly control the amount of foaming agent, so as to avoid the grouting material from condensing before the filling is completed, resulting in unusable and wasted materials.

[0030] 2. The ambient temperature of the construction shall not be lower than 5℃. If the construct...

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Abstract

The present invention relates to a method for preparing and using architectural materials. The invention discloses a method for preparing and using a foaming epoxy resin base grouting material for treating the concrete floor empty drum. The material is composed of epoxy resin, diluting agent, firming agent, foaming agent and adjuvant according to proportioning. By means of pressure grouting equipment, it is capable of injecting the foaming expansion epoxy resin base grouting material into a concrete floor empty drum position to fill, to make the empty drum position to be compact, so as to repair the concrete floor. The foaming magnification of the material is from 5% to 100%, and is capable of pouring the concrete empty drum position to satiate; the material after solidifying has well water resistance, chemical resistance and certain strength. The raw material is easy to be obtained, operation is simple, construction is easy, and an operable method for repairing the concrete floor empty drum is provided.

Description

Technical field [0001] The invention belongs to the technical field of building materials, and specifically relates to a preparation method and a use method of a foamed epoxy resin-based grouting material for treating hollow concrete floors. Background technique [0002] A large number of buildings, workshops, garages, and storage centers all use concrete as the ground, but the concrete floor often has quality problems such as hollowing due to the poor combination of surface and base. The traditional method is to cut the hollow part with a cutting machine and then chisel off, and re-surface construction. Such a treatment method has caused a great delay in the construction period. It is not only labor-intensive and time-consuming, but also because it is difficult to ensure that the new surface and base layer will not be empty again, the success rate is not high, and the effect is not ideal. Therefore, it is of great significance to develop a material and use method for treating ho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/02C08K5/17C08J9/04E04G23/02
Inventor 金祖强徐娟王丽娜
Owner BEIJING FUHEJIN BUILDING REPAIR TECH CENT
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