High-weather-resistant bare concrete protection agent and application method thereof

A technology of fair-faced concrete and protective agent, applied in the field of fair-faced concrete protective agent, can solve the problems of reduced durability, water absorption, discoloration, etc., and achieve the effects of no post-treatment, improved durability, and simple production equipment

Inactive Publication Date: 2018-04-13
CCCC FOURTH HARBOR ENG INST +1
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the disadvantages of existing fair-faced concrete affected by the environment, such as water abs

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1

[0020] A kind of high-weather-resistant fair-faced concrete protective agent is prepared by the following method:

[0021] After mixing the composite inorganic filler (200g), add it into water and disperse at a high speed of 3500 rpm for 40 minutes, then reduce the dispersion speed to 250 rpm, and then add silicone emulsion BS45 (250g) and silicone acrylic emulsion A-79 in turn (B) (280g), thickener hydroxypropyl methylcellulose (10g), leveling agent 203 (8g), preservative (11g), etc., stir for 20 minutes, and then the protection of fair-faced concrete with high weather resistance can be obtained agent.

[0022] The proportion of composite inorganic fillers is as follows in Table 1:

[0023] Table 1

[0024] name

[0025] Performance Testing

[0026] The exposed concrete protective agent with high weather resistance was coated on the surface of concrete with an age of 28 days and the surface was dry, and the water absorption rate (48h) was 91% ...

Example Embodiment

[0027] Example 2

[0028] A kind of high-weather-resistant fair-faced concrete protective agent is prepared by the following method:

[0029] After mixing the composite inorganic filler (260g), add it into water and disperse at a high speed of 4200 r / min for 40 minutes, then reduce the dispersion speed to 300 r / min, and then add silicone emulsion BS43N (200g), silicone acrylic emulsion A-79 ( B) (240g), thickener hydroxypropyl methylcellulose (12g), leveling agent 203 (10g), preservative (9g), etc., stir for 20 minutes, and then a clear concrete protective agent with high weather resistance can be obtained .

[0030] Performance Testing

[0031] Coated on the concrete surface, the water absorption rate (48h) is 86% lower than that of the reference specimen; the artificial climate resistance (5500h) is apparently intact; the water resistance (192h) is apparently intact; the contact angle is 121°, and the artificial climate resistance (5500h) ) with a rear contact angle of 98...

Example Embodiment

[0035] Example 3

[0036] A kind of high-weather-resistant fair-faced concrete protective agent is prepared by the following method:

[0037] After mixing the composite inorganic filler (255g), add it into water and disperse at a high speed of 5000 rpm for 40 minutes, then reduce the dispersion speed to 350 rpm, and then add silicone emulsion BS45 (260g) and silicone acrylic emulsion A-79 in turn. (B) (320g), thickener hydroxyethyl cellulose (16g), leveling agent 2020 (13g), preservative (12g), etc., stir for 20 minutes, and then a high weather-resistant fair-faced concrete protective agent can be obtained.

[0038] Performance Testing

[0039] Coated on the concrete surface, the water absorption rate (48h) is 92.8% lower than that of the benchmark specimen; the artificial climate resistance (6000h) is apparently intact; the water resistance (192h) is apparently intact; the contact angle is 132°, and the artificial climate resistance (6000h) ), the rear contact angle is 107°...

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

No PUM Login to view more

Abstract

The invention discloses a high-weather-resistant bare concrete protection agent which comprises, in weight percent, 20-45% of composite inorganic fillers, 15-30% of organic silicone emulsion, 10-30% of silicone acrylic emulsion, 1-3% of thickening agents, 0.2-1.5% of flatting agents and 0.5-2.0% of preservatives. The composite inorganic fillers are compounds of sericite, calcium carbonate, kaolin,hydrophilic air-phase silicon dioxide and titanium dioxide. The bare concrete protection agent is applied to protection of bare concrete has the advantages that the protection agent is good in waterproof and breathable effect and resistant in ultraviolet irradiation, durability of the bare concrete can be remarkably improved, and discoloring and falling of protection layers are omitted. Production devices of the bare concrete protection agent are simple and less in energy consumption, green and environmentally friendly, by-products are avoided, and post-treatment is omitted.

Description

technical field [0001] The invention relates to the field of fair-faced concrete protective agents. Background technique [0002] With the vigorous development of infrastructure, concrete has played an increasingly important role in ports, docks, and urban roads. In recent years, with the rapid development of modern concrete technology, fair-faced concrete has received more and more attention because of its concrete qualities. However, due to the characteristics of its material structure, concrete is easy to absorb water, and the color will change due to mildew on the surface due to the attachment of microorganisms, losing the true color of fair-faced concrete. At the same time, due to the entry of water, the mechanical strength of concrete will also change. Therefore need to coat a kind of protective agent on the surface of clear-water concrete, reduce the water absorption of clear-water concrete, improve its durability. [0003] Publication No. CN106193338A discloses a c...

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
IPC IPC(8): C04B41/68
CPCC04B41/5041C04B41/68C04B41/5037C04B41/5035C04B41/501C04B41/5027C04B41/495C04B41/4803C04B41/4539
Inventor 唐诗王胜年张夏虹范志宏熊建波岑文杰
Owner CCCC FOURTH HARBOR ENG INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap