Treatment agent of recycled aggregate of waste concrete and treatment method

A waste concrete and recycled aggregate technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve problems such as resource waste, increased environmental burden, and impact on sustainable development

Active Publication Date: 2010-01-13
WUHAN UNIV OF TECH
View PDF0 Cites 29 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If waste concrete is not utilized, it will increase the burden on the environment on the one hand, and waste resources on the other hand, which will affect sustainable development

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

Embodiment 1

[0021] Prepare the silicone waterproofing agent according to the ratio of silicone resin: penetrating agent: ethanol + water = 20:15:65. Soak the recycled aggregate in the above silicone water repellent solution for 48 hours, wash and dry at 50°C for 10 hours.

Embodiment 2

[0023] Prepare the silicone water repellent according to the ratio of silicone resin: penetrating agent: ethanol + water = 40:15:45. Soak the recycled aggregate in the above silicone water repellent solution for 48 hours, wash and dry at 55°C for 12 hours.

Embodiment 3

[0025] Prepare the silicone water repellent according to the ratio of silicone resin: penetrating agent: ethanol + water = 60:15:25. Soak the recycled aggregate in the above silicone water repellent solution for 48 hours, wash and dry at 60°C for 13 hours.

[0026] Table 1 is the comparison of water absorption, firmness, crushing value, etc. before and after the treatment of waste concrete recycled aggregates with the organosilicon waterproofing agent prepared in the examples. It can be seen from Table 1 that the silicone waterproofing agent can effectively reduce the water absorption rate of waste concrete recycled aggregate, improve its own strength, and further improve the working performance of recycled concrete. The performance of recycled aggregate treated with silicone waterproofing agent is close to or exceeds that of natural aggregate.

[0027] For the test methods used in Table 1, please refer to the relevant ASTM specifications.

[0028] schedule

[0029] Table 1...

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 relates to treatment agent of recycled aggregate of waste concrete and a treatment method. The treatment agent is organic silicon waterproof agent, which comprises silicon resin solution, penetrating agent and dispersing agent, and the contents of the components are 20 to 60 percent of silicon resin solution, 15 percent of penetrating agent and 25 to 65 percent of dispersing agent according to weight. The treatment method comprises the steps of recycled aggregate dipping treatment, cleaning and drying, wherein, in the dipping treatment step the regenerative aggregate is dipped by adopting penetrating organic silicon waterproof agent to reduce the water absorption rate of the regenerative aggregate and improve the strength of the regenerative aggregate; in the cleaning and drying steps impurity and treatment agent are removed through cleaning method, and treated regenerative aggregate is obtained under drying condition. The treatment method of the recycled aggregate from waste concrete has the advantages that the operation is simple, and the prepared treatment agent of recycled aggregate of waste concrete can effectively improve the regenerative strength of the regenerative aggregate and the operating performance of regenerative concrete.

Description

technical field [0001] The invention relates to a concrete aggregate treatment agent and the field of treatment thereof, in particular to a treatment agent and a treatment method for waste concrete recycled aggregate. Background technique [0002] As a large number of old concrete engineering structures and buildings reach their service life, a large amount of cement-based solid waste such as waste concrete is generated during the demolition and reconstruction process. Abandoned concrete is the largest amount of waste discharged by the construction industry. Except for some used for construction site leveling and landfill in low-lying areas, most of them are exposed to suburban landfills. The weakly alkaline waste slag deactivates large areas of soil. If waste concrete is not utilized, it will increase the burden on the environment on the one hand, and waste resources on the other hand, which will affect sustainable development. With the huge demand for national constructio...

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 Applications(China)
IPC IPC(8): C04B18/16
CPCC04B20/1051C04B18/167C04B24/42C04B2103/65Y02W30/91C04B20/02C04B20/04C04B20/1022C04B2103/408
Inventor 吴少鹏刘杰胜米轶轩陈美祝庞凌林振华张涛刘至飞钟进军张吉哲孙艺涵林俊涛姜睆
Owner WUHAN UNIV OF TECH
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