Method for preparing road base material

A technology of road base and boring materials, which is applied in the field of road construction materials, can solve the problems of unfavorable application and development of waste concrete recycled aggregates, increase the production cost of recycled coarse aggregates, and waste recycled aggregate resources, so as to improve long-term road use performance, solve the shortage of sand and gravel, and reduce the cost

Inactive Publication Date: 2018-12-14
CHINA THREE GORGES UNIV +1
View PDF7 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, this wastes part of the recycled aggregate resources, and at the same time increases the production cost of the recycled coarse aggregate. On the other hand, it also causes a certain degree of environmental pollution, which is not conducive to the application of waste concrete recycled aggregates in the road base. And 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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing road base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of road base material, each raw material and mass percentage are as follows:

[0019] 40% recycled fine aggregate with a particle size of ~5mm, 29.1% recycled coarse aggregate with a particle size of 5~20mm, 21.8% recycled coarse aggregate with a particle size of 20~30mm, 3% cement, and 6.1% fly ash; is the mass percentage.

[0020] The optimal water consumption of the compound is 10%, and the percentages mentioned are all mass percentages.

[0021] The P.O42.5 cement is used, the fly ash is grade II and above, the fineness modulus of the regenerated fine aggregate is between 3.1-3.7, and the crushing value of the regenerated coarse aggregate is Not more than 35%.

[0022] A preparation method of cement fly ash comprehensive stable recycled aggregate road base material is as follows:

[0023] Mix and stir the recycled aggregates with particle sizes of 0~5mm, 5~20mm, and 20~30mm according to the mass percentages of 40%, 29.1%, and 21.8% respectively, and then a...

Embodiment 2

[0025] A kind of road base material, each raw material and mass percentage are as follows:

[0026] 38.3% recycled fine aggregate with a particle size of ~5mm, 27.8% recycled coarse aggregate with a particle size of 5~20mm, 20.9% recycled coarse aggregate with a particle size of 20~30mm, 2.6% cement, and 10.4% fly ash; is the mass percentage.

[0027] The optimal water consumption of the compound is 9.8%, and the percentages are all mass percentages.

[0028] The P.O42.5 cement is used, the fly ash is grade II and above, the fineness modulus of the regenerated fine aggregate is between 3.1-3.7, and the crushing value of the regenerated coarse aggregate is Not more than 35%.

[0029] A preparation method of cement fly ash comprehensive stable recycled aggregate road base material is as follows:

[0030] Mix and stir the recycled aggregates with particle diameters of 0~5mm, 5~20mm, and 20~30mm according to the mass percentages of 38.3%, 27.8%, and 20.9% respectively, and then...

Embodiment 3

[0032] A kind of road base material, each raw material and mass percentage are as follows:

[0033] 37.4% recycled fine aggregate with a particle size of ~5mm, 27.2% recycled coarse aggregate with a particle size of 5~20mm, 20.4% recycled coarse aggregate with a particle size of 20~30mm, 2.5% cement, and 12.5% ​​fly ash; is the mass percentage.

[0034] The optimal water consumption of the compound is 9.8%, and the percentages are all mass percentages.

[0035] The P.O42.5 cement is used, the fly ash is grade II and above, the fineness modulus of the regenerated fine aggregate is between 3.1-3.7, and the crushing value of the regenerated coarse aggregate is Not more than 35%.

[0036] A preparation method of cement fly ash comprehensive stable recycled aggregate road base material is as follows:

[0037] Mix and stir the recycled aggregates with particle diameters of 0~5mm, 5~20mm, and 20~30mm according to the mass percentages of 37.4%, 27.2%, and 20.4% respectively, and th...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention relates to a method for preparing a road base material. Cement and fly ash are used as inorganic binders, and waste and old concrete recycled aggregates are used as stabilized materials.The mixture contains 30% to 40% of recycled fine aggregate of 0 to 5mm, 20% to 35% of recycled coarse aggregate of 5 to 20mm, 18% to 25% of recycled coarse aggregate of 20 to 30mm, 2% to 4% of cementand 5% to 15% of fly ash. The optimum water consumption ratio of the mixture is 9.6% to 10.5%, and the maximum dry density is 1.965 to 1.986 g/cm<3>. The 7d unconfined compressive strength of the base material is 4 to 5MPa. The method fully utilizes recycled aggregate resources, utilizes regenerated fine aggregate to replace natural sand, completely uses recycled aggregate as the stabilized material, utilizes cement and fly ash as binders for comprehensive stabilization, prepares road base materials meeting the requirements, saves natural stone resources, saves engineering costs, alleviates the shortage of natural stone resources to a certain extent and is conducive to environmental protection.

Description

technical field [0001] The invention relates to a road base material and a preparation method thereof, in particular to a preparation method of cement fly ash comprehensive and stable recycled aggregate road base material, belonging to the field of road building materials. Background technique [0002] With the development of economy and society, urban infrastructure renewal and reconstruction process is accelerated, and more and more waste concrete is produced accordingly. If it is not effectively disposed and utilized, it will bring environmental pollution, land occupation, waste of resources and other problems. On the other hand, with the continuous investment in infrastructure construction, the use of building materials such as cement concrete in my country is also increasing, and the production of building materials requires the mining of a large amount of natural resources, which poses a major threat to the ecological environment and natural resources. Therefore, the u...

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): C04B28/04
CPCC04B28/04C04B2111/0075C04B2201/20C04B2201/50C04B18/08C04B18/167
Inventor 彭艳周王华锋徐港史宏宇陈洁钟颂
Owner CHINA THREE GORGES UNIV
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