Construction waste recycled concrete and preparing method thereof

A technology for recycled concrete and construction waste, applied in the field of building materials, can solve the problems of large dispersion of recycled concrete strength, low elastic modulus, large total volume of mortar, etc., and achieve the effects of improving quality performance, reducing emissions, and reducing costs.

Inactive Publication Date: 2019-09-27
内蒙古巨华集团大华建筑安装有限公司
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional method of preparing recycled concrete is mainly to regard recycled aggregate as a homogeneous overall material, and use recycled aggregate to replace natural aggregate by equal volume or equal quality; since recycled aggregate is composed of natural aggregate and its surface adhesion The mortar composition simply replaces natural aggregates, and the total volume of mortar in recycled concrete is too large, resulting in a decrease in elastic modulus. Moreover, due to the different sources and processing methods of recycled aggregates, there are differences in their quality and surface mortar content. Make the dispersion of recycled concrete strength too large

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
  • Construction waste recycled concrete and preparing method thereof
  • Construction waste recycled concrete and preparing method thereof
  • Construction waste recycled concrete and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0036] combine Figure 1 to Figure 6 , a construction waste recycled concrete provided in this embodiment and its preparation method are mainly based on the equal volume mortar method (ie: EMV method), by establishing the residual mortar volume replacement formula, and analyzing and comparing the physical properties of the raw materials As well as a large amount of creative experimental data, the most practical recycled concrete mix ratio is obtained to meet the needs of practical engineering applications while improving the quality and performance of recycled concrete. details as follows:

[0037] 1. Comparison of physical properties of raw materials

[0038] 1. Comparison of basic physical properties of coarse aggregate

[0039] Comparing recyc...

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 building materials, in particular to construction waste recycled concrete and a preparing method thereof. The construction waste recycled concrete is prepared from, by weight, 225-350 parts of P O42.5 cement, 85-95 parts of II-class coal ash, 0-85 parts of S95 mineral powder, 658-1047 parts of natural fine aggregate, 741-988 parts of recycled coarse aggregate, 9-10.5 parts of an additive and 160-192 parts of water, wherein the fineness modulus of the natural fine aggregate is 2.6, and the granularity of the recycled coarse aggregate is 5-31.5 mm. On the basis of an equal mortar volume method (namely EMV method), by establishing a residual mortar volume replacement formula and analyzing and comparing physical performance of the raw materials, through a large number of creative experimental data, the most practical recycled concrete mix proportion is obtained, the quality performance of the recycled concrete is improved, and meanwhile the actual engineering application requirement is met.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a construction waste recycled concrete and a preparation method thereof. Background technique [0002] Recycled concrete is a kind of concrete prepared by partially or completely replacing natural aggregates with recycled aggregates obtained from waste concrete after cleaning, crushing, grading, and matching with each other in a certain proportion. Performance adjustment is carried out to improve the strength of recycled concrete, so that it has good mechanical properties and durability after hardening. The application of recycled aggregates is conducive to reducing the use and development of natural aggregates and enabling limited resources to be recycled. [0003] The traditional method of preparing recycled concrete is mainly to regard recycled aggregate as a homogeneous overall material, and use recycled aggregate to replace natural aggregate by equal volume or eq...

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): C04B28/04C04B18/16
CPCC04B28/04C04B18/08C04B18/16C04B14/068C04B24/023C04B22/068C04B24/04C04B24/06C04B24/10C04B18/141Y02W30/91
Inventor 徐俊平茫来贾玉琦
Owner 内蒙古巨华集团大华建筑安装有限公司
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