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Interface treating agent of unsaturated polyester mortar as concrete repairing material

A technology of interface treatment agent and repair material, applied in the direction of building insulation materials, building components, etc., can solve the problems of curing shrinkage and thermal deformation performance difference, debonding, affecting application, etc., achieve good deformation performance and improve bond strength Effect

Inactive Publication Date: 2003-01-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the difference in the composition and structure of UP and cement concrete, there are large differences in curing shrinkage and thermal deformation properties between the two. At the same time, due to the polycondensation reaction that occurs during the curing of unsaturated polyester resin, when When resin mortar (UPM) is used for repair, it will be constrained by the cement concrete base and produce a lot of internal stress. If it is not handled properly, it will often cause cracking or debonding, which greatly affects the use of UP in the field of concrete repair. application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] UPM repair material adopts the following formula (see UPM concrete repair material and its preparation method):

[0031] Unsaturated polyester resin 307# (UP) 100g

[0032] Dibutyl phthalate (DBP) 50g

[0033] 50% cyclohexanone peroxide slurry solution 2g

[0034] Cobalt naphthenate solution in styrene containing 2% cobalt metal 4g

[0035] Silane coupling agent KH-570 1g

[0036] Cement (Silicone 425) 175g

[0037] Quartz sand (0.15-1.25mm) 525g

[0038] The formula of the interface treatment agent is as follows:

[0039] Epoxy resin E-51 100g

[0040] Dibutyl phthalate 15g

[0041] Epoxy curing agent 650 35g

[0042] Silane coupling agent KH-570 2.0g

[0043] Silicone Rubber 107 10g

[0044] Light calcium carbonate 50g

[0045] Quartz sand (0.15-0.6mm) 200g Prepare the interface treatment agent according to the aforementioned process steps. After the coating of the interface treatment agent, the bond strength (7 days) between the old concrete and the UPM r...

Embodiment 2

[0047] The formula of UPM repair material is the same as Example 1

[0048] The formula of the interface treatment agent is as follows:

[0049] Epoxy resin E-51 100g

[0050] Dibutyl phthalate 10g

[0051] Epoxy curing agent 593 18g

[0052] Silane coupling agent KH-570 1.5g organosilicon rubber 107 30g cement (common silicon 425) 100g quartz sand (0.15-0.6mm) 250g Prepare the interface treatment agent according to the aforementioned process steps. After the interface treatment agent coating treatment, the bond strength (7 days) between the old concrete and the UPM repair material was 8.7MPa.

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PUM

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Abstract

An interface treating agent of unsaturated polyester mortar (UPM) for repairing concrete is prepared from EP as primary cemonting agent, organic silica rubber as modifier, plastisizer, coupling agent, epoxy solidifying agent and filler. It can greatly increase the adhesion between concrete and repairing material.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a concrete interface treatment agent prepared with polymer as a main raw material, which can be used together with unsaturated polyester mortar concrete repair materials. Background technique [0002] Concrete is the most widely used and applied material in today's building materials. It can be formulated into various buildings with different strengths, different performances and different shapes. However, due to the influence of the environmental conditions of the building, poor construction quality or improper design, various diseases often occur, reduce the quality of the structure, and shorten the service life. Therefore, when the concrete structure is damaged to a certain extent, it must be refurbished or repaired, and the quality of the concrete repair material and its construction quality also directly affect the service life of the concrete project...

Claims

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Application Information

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IPC IPC(8): C08L63/00E04B1/62
Inventor 杨钱荣
Owner TONGJI UNIV
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