Unlock instant, AI-driven research and patent intelligence for your innovation.

Surface repair method of prefabricated concrete components

A technology of surface repair and prefabricated concrete, which is applied in the direction of surface layering devices, manufacturing tools, climate sustainability, etc., can solve problems such as surface defects, achieve the effects of reducing peeling force, improving wear resistance, and improving wear resistance

Active Publication Date: 2022-08-09
东莞市建安集团有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to improve the problem that the surface of the refilled concrete is prone to produce new surface defects when the formwork is removed, this application provides a surface repair method for prefabricated concrete components

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Surface repair method of prefabricated concrete components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The present embodiment discloses a method for repairing the surface of a prefabricated concrete member, wherein the treatment of holes with a depth of more than 100 mm specifically includes the following steps:

[0058] (1a) Use an impact drill or hammer to dig around the holes of the prefabricated concrete members, and then remove the loose concrete.

[0059] (2a) Clean the inner surface of the prefabricated concrete member with clean water, air-dry for 3 minutes, and then evenly apply the anti-leakage agent, and then proceed to the next step after the surface of the anti-leakage agent is dry. In the present embodiment, the preparation method of anti-leakage agent is as follows:

[0060] Mix the white mortar and water in a volume ratio of 1.5:1, and then stir evenly to obtain a leak-proof agent.

[0061](3a) A layer of barrier paint with a thickness of 0.5mm is evenly coated on the surface of the template. After the barrier paint is cured, a special template is obtain...

Embodiment 2

[0076] The difference between the surface repair method of prefabricated concrete member and Example 1 is:

[0077] The ratio of the raw materials of the barrier coating is different, as follows:

[0078] 40kg of acrylic resin was added to 90kg of butyl acrylate, and stirred to dissolve the acrylic resin in ethyl acetate to obtain a film-forming substance;

[0079] Add 2kg of polyester fiber with a length of 6mm, a breaking strength of 4CN / detx, 6kg of quartz sand with a particle size range of 20-40nm, and 3kg of KH560 into the film-forming substance, and stir until uniformly dispersed to obtain a barrier coating.

Embodiment 3

[0081] The difference between the surface repair method of prefabricated concrete member and Example 1 is:

[0082] In the preparation of the release coating, 6.1 kg of maleic anhydride modified rosin glyceride was also mixed in step S2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
thicknessaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The present application relates to the field of repairing the surface of concrete members, in particular to a method for repairing the surface of prefabricated concrete members. , apply anti-leakage agent; apply isolation paint on the surface of the template, after the isolation paint is cured, a special template is obtained, and then fix the special template on the chiseled position of the prefabricated concrete member; go to the chiseled position on the prefabricated concrete member Pour in the concrete and compact it; continue curing for a period of time after the concrete is solidified, until the concrete reaches a certain strength, remove the special formwork, check the flatness of the chiseled position, and fill the remaining position with filling material after meeting the requirements. Slide to original size; after filling is completely dry, sand the repaired surface smooth. The present application can improve the problem that the re-filled concrete surface is prone to new surface defects when the formwork is removed.

Description

technical field [0001] The present application relates to the field of repairing surface defects of concrete members, in particular to a method for repairing the surface of prefabricated concrete members. Background technique [0002] Prefabricated concrete components are prefabricated concrete component products for on-site assembly, such as prefabricated slabs used as floor slabs. [0003] Among them, the forming of the prefabricated concrete components is inseparable from the support of the formwork. After the hardening and maintenance of the prefabricated concrete components is completed, the outer side of the prefabricated concrete components is removed to shape the concrete components. The formwork can be obtained. Concrete components. [0004] However, due to the fluctuation of the quality of the raw materials used, the measurement error or the insufficient stirring, etc., it is easy to cause the fresh concrete to have the characteristics of segregation, bleeding, dr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B28B7/38B28B19/00B28D1/00C09D133/04C09D7/65C09D7/61
CPCB28B7/384B28B19/00B28D1/00C09D133/04C09D7/65C09D7/61C09D7/70C08L2205/16C08L67/00C08L91/00C08L93/04C08K3/36Y02W30/91
Inventor 吴继东朱凤敏刘沛祺黄沛均商玉宽韦林清
Owner 东莞市建安集团有限公司