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Epoxy resin base fast repairing material and preparation method thereof

A technology of epoxy resin and repairing materials, which is applied in building maintenance, bridge maintenance, pavement details, etc., can solve the problems of environmental pollution, low strength, high viscosity of epoxy resin, etc., and achieves easy preparation and operation, moderate strength in the later stage, Early intensity high effect

Inactive Publication Date: 2008-02-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of cement mortar as a repair material has the following problems: (1) The bond between cement mortar and concrete body is not good; (2) The early strength is not high; (3) The construction period is long
But there are also some shortcomings in epoxy resin mortar: (1) the late strength of mortar is too high
As a repair material, it only needs to meet the requirements of the project. Too high strength is actually a waste, and too high local strength is harmful to the engineering structure; (2) The price of epoxy resin mortar is relatively high, and one square meter The cost of epoxy emulsion cement mortar is about 10,000 yuan; (3) the viscosity of epoxy resin is high, and the epoxy resin must be heated to a certain temperature in a water bath before construction in winter to prepare the slurry; (4) some raw materials are toxic. Harm to human health and pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: the basic formulation of the epoxy resin-based quick repair material that adopts is as table 1:

[0022] Table 1 Epoxy resin-based quick repair material formula (kg)

[0023] raw material

[0024] The epoxy resin-based quick repair material is prepared according to the method of the invention.

Embodiment 2

[0025] Embodiment 2: the basic formulation of the epoxy resin-based quick repair material that adopts is as table 2:

[0026] Table 2 Epoxy resin-based quick repair material formula (kg)

[0027] Numbering

[0028] The epoxy resin-based quick repair material is prepared according to the method of the invention.

Embodiment 3

[0029] Embodiment 3: with reference to the test method specified in GB / T 1767-1999 "Cement Mortar Strength Test Method (ISO Method)", according to the formula in Table 1 and Table 2, the epoxy resin-based quick repair material is prepared into mortar The samples were tested for compressive strength, and the experimental results of compressive strength are shown in Table 3.

[0030] Table 3 Compressive strength of epoxy resin-based quick repair materials

[0031]

[0032] In the above test, with reference to the provisions of the national standard, three samples of 40×40×160mm were prepared for each age in each formula, a total of 96 samples, and after curing to the age, the compressive test was carried out on a press to obtain 192 experimental data of compressive strength were obtained (among them, there were 3 invalid data). The dispersion of the experimental data is very small, which shows that the uniformity of the material is relatively good. The data listed in...

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Abstract

The invention provides an epoxy resin-based rapid repair material and a preparation method thereof. The epoxy resin-based rapid repair material is made of sand, talcum powder, epoxy resin, polyamide and thinner. The preparation method comprises:) uniformly mixing epoxy resin and diluent, adding polyamide and stirring uniformly to form epoxy slurry; mixing sand and talc powder uniformly; stirring epoxy slurry evenly with the mixture of sand and talc powder; Oxygen resin-based rapid repair materials can achieve moderate cost, early strength (3d can reach 60MPa) but moderate later strength, good bonding, convenient construction, short construction period, and no need to close traffic. It can be used for repairing concrete buildings such as bridges, tunnels, roads and houses.

Description

technical field [0001] The invention relates to civil engineering, in particular to an epoxy resin-based quick repair material. Background technique [0002] Due to the impact of heavy traffic loads, changes in the environment and other external conditions, the concrete structure is prone to cracks. If these concrete components are not repaired in time, their performance will decline rapidly, affecting the use function, structural safety and transportation safety. . Moreover, for a long time, people tend to focus on strength (safety) and neglect use (durability) in the research on engineering structure performance and design, which makes the durability of buildings very prominent, and the maintenance cost has also increased sharply. In order to restore the use function of concrete buildings such as bridges, roads and houses in service, it is hoped that repairs can be completed quickly after the damage of important traffic facilities such as bridges, so that they can be rest...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08K3/36E04G23/02E01D22/00E01C11/00C08L77/00
Inventor 郭文瑛黄培彦
Owner SOUTH CHINA UNIV OF TECH
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