Process for preparing concrete with recycled coarse aggregates prepared by waste concrete

A technology of recycled coarse aggregate and recycled aggregate, applied in the field of concrete, can solve the problems of low tensile strength, compressive strength and slump, and achieve the effect of improving compressive strength and slump performance

Inactive Publication Date: 2017-01-11
LANGFANG RONGSHENG CONCRETE
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in order to solve the problems existing in the above-mentioned background technology, provide an improved concrete prepared by using waste concrete as recycled coarse aggregate, and solve the problem of the tensile strength of recycled concrete compared with natural aggregate concrete. , Compressive strength and slump are relatively low

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 Construction

[0006] Using waste concrete as recycled coarse aggregate to prepare concrete, the preparation process is as follows: collect waste concrete for testing; record the mixing ratio of recycled waste concrete incoming materials; transport the waste concrete to the crusher for crushing, and analyze the particle size distribution of waste concrete, and the recycled aggregate stones The sieving results are: the square sieve hole sizes are 31.5, 25, 20, 16, 10, 5mm and less than 5mm respectively, and the sieve residues are respectively 0, 4.48%, 27.82%, 18.59%, 28.72%, 13.72%, 16.67% %; The mix ratio design for the preparation of recycled aggregate concrete is firstly based on the premise of achieving workability requirements (such as slump of 180mm), a certain water-binder ratio, by selecting admixtures and appropriately increasing the amount of cement slurry (5%~ 10%) to meet the workability requirements, according to the mix ratio of CA0 concrete produced by the mixing station, the c...

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 the technical field of concrete and particularly relates to a process for preparing concrete with recycled coarse aggregates prepared by waste concrete; the preparing process of the concrete is as follows: collecting waste concrete for testing; recycling proportioning records of waste concrete incoming materials; conveying the waste concrete to a crusher for being crushed and analyzing waste concrete granularity distribution. The concrete prepared with recycled coarse aggregates prepared by waste concrete is added with superfine silica powder and a high-efficiency water reducer, is dramatically improved in tensile strength, compression strength and slump performance, and has approximate performance with and even exceeds natural concrete.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to preparing concrete by using waste concrete as recycled coarse aggregate. Background technique [0002] Improving the recycling of building material resources and the comprehensive utilization of construction waste in my country's construction industry is an extremely important link to achieve energy conservation, emission reduction, and environmental protection. Based on the research on the use of waste concrete on the construction site as recycled aggregate, it is an objective need for technology development and resource conservation to propose new concrete optimization application technologies, especially the design method and technology of the mix ratio. The composition system of traditional concrete has been developed by using waste concrete from the construction site as recycled aggregate, and the preparation and control methods have also changed accordingly, which will aff...

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): C04B28/00C04B18/16
CPCC04B18/16C04B28/00C04B18/08C04B18/141C04B22/0046C04B14/06C04B14/02C04B2103/302C04B18/146Y02W30/91
Inventor 刘进辉
Owner LANGFANG RONGSHENG CONCRETE
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