Waste wood and plastic coated recycled aggregate bituminous concrete and preparation method and application thereof

A technology of asphalt concrete and recycled aggregates, applied in roads, road repairs, construction, etc., can solve problems such as insufficient bonding strength, no significant reduction in water strength, and underutilization, etc., to reduce costs and process energy consumption , huge economic and environmental benefits, avoiding the effect of high crushing index value

Active Publication Date: 2018-11-06
QINGDAO TECHNOLOGICAL UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the following problems still exist: (1) In the actual application and promotion of recycled concrete and other products, there are complex sources and large fluctuations in strength levels, insufficient bond strength at the interface between new slurry and old aggregate, large porosity of recycled aggregate, High water absorption rate and high crushing index value; (2) After waste plastics are processed into granules, only their appearance and shape have been changed, and their chemical properties have not been significantly changed. , the advantages of good toughness, the above advantages have not been fully utilized; (3) The leftover scraps from wood processing in furniture factories, MDF factories, and multi-layer board factories also need to be effectively utilized as idle waste.
At present, there is still a lack of an engineering application that can simultaneously realize traffic construction waste, waste plastics, and waste wood powder on asphalt pavement

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
  • Waste wood and plastic coated recycled aggregate bituminous concrete and preparation method and application thereof
  • Waste wood and plastic coated recycled aggregate bituminous concrete and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The specific steps of the waste wood-plastic coated recycled aggregate asphalt concrete preparation process are as follows:

[0025] S1: Firstly, waste ethylene-vinyl acetate copolymer-based agricultural plastic greenhouse film and reinforced concrete-based building demolition concrete were respectively used in "Recycling Method for Recycling Waste Plastics After Industry" and "A Method for Using Waste Concrete to Prepare High-quality Recycled Fine Aggregate" "Method" and other technologies well known in the art for collection, classification, processing, crushing and granulation to produce recycled plastic particles with a particle size of 10-30mm, and recycled plastic particles with a nominal particle size between 2.36mm≤particle size≤26.5mm Materials, nominal maximum particle size ≤ 0.6mm regenerated mineral powder; waste wood powder is the remaining corner waste from wood processing using a wood powder crusher through crushing, screening, drying, powder making and ot...

Embodiment 2

[0032] The preparation process and structure of the waste wood-plastic-coated recycled aggregate asphalt concrete are the same as in Example 1. The difference is: the waste plastic used is polyvinyl chloride plastic, and the corresponding viscous temperature is 160°C; the recycled aggregates all replace ordinary aggregates; the application site is changed to a municipal park square.

[0033] The rheological viscosity coefficient of viscous fluid polyvinyl chloride measured by rotational viscometer is 6.7×10 3 mPa·s; The specific surface area of ​​the recycled aggregate measured by the vapor adsorption method is 2.79m 2 / kg; Combined with the surface tension tester, the surface coverage rate of the corresponding waste wood powder / waste polyvinyl chloride wood-plastic thin layer partially coated recycled aggregate is 33.5%.

[0034] The stability, flow value, and residual stability of asphalt concrete samples coated with waste wood-plastic thin layer coated recycled aggregates ...

Embodiment 3

[0036] The preparation process and structure of the waste wood-plastic-coated recycled aggregate asphalt concrete are the same as in Example 1. The difference is: the waste plastics used are high-density polyethylene plastics, and the recycled aggregates are recycled traffic aggregates and recycled traffic mineral powders processed from waste traffic waste generated by intermediate traffic roads; the application site is changed to a basement parking lot .

[0037] The rheological viscosity coefficient of viscous flow high-density polyethylene measured by rotational viscometer is 2.2×10 3mPa s; The specific surface area of ​​the recycled traffic aggregate measured by the vapor adsorption method is 2.34m 2 / kg; Combined with the surface tension tester, the surface coverage rate of the corresponding waste wood powder / high-density polyethylene thin layer partially coated recycled traffic aggregate is 31.5%.

[0038] The stability, flow value, and residual stability of asphalt co...

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 sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to waste wood and plastic coated recycled aggregate bituminous concrete and a preparation method and application thereof and belongs to the technical field of solid waste recycling and building materials. The waste wood and plastic coated recycled aggregate bituminous concrete mainly comprises waste plastics, waste wood powder, recycled aggregate, bitumen and regenerated mineral powder, particularly 1 part of bitumen, 0-1 part of regenerated mineral powder and 20-25 parts of waste wood and plastic coated recycled aggregate. By the hot extrusion preparing process, molten waste plastics and a good amount of waste wood powder are mixed to obtain waste wood and plastic hot aggregate, the surface of the recycled aggregate prepared from traffic and building wastes is coatedby the waste wood and plastic hot aggregate partially, the waste wood and plastic coated recycled aggregate completely or partly substitutes general aggregate; by the bituminous concrete preparationprocess, the waste wood and plastic coated recycled aggregate is mixed with molten bitumen finally and then spread to form bituminous concrete pavement. Thus, the solid wastes such as traffic and building wastes, waste plastics, waste wood powder are recycled through bituminous adhesion, and great economic and environmental protection benefits are achieved.

Description

technical field [0001] The invention relates to asphalt concrete wrapped with waste wood plastics and its preparation process and application, and belongs to the technical field of solid waste recycling and building materials. Background technique [0002] The unprecedented rapid development of the transportation construction industry consumes a large amount of construction materials, resulting in: (1) the increasing shortage of transportation construction raw materials, which has caused serious damage to the natural environment; The increasing trend of traffic construction waste is obvious. [0003] The existing asphalt pavement is a pavement surface layer formed by mixing aggregates, mineral powder and asphalt of various different sizes of particles in an appropriate proportion, after heating to a certain temperature, and then paving and compacting. ZL201310013640 discloses a "Hot Mix Recycled Fine Aggregate Asphalt Concrete". By designing the recycled fine aggregate asph...

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): C04B26/26C04B20/10E01C19/02
CPCC04B20/1029C04B26/26E01C19/02C04B18/16C04B18/12
Inventor 罗健林李秋义张春巍王保林张纪刚高嵩诸雪青
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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