Unlock instant, AI-driven research and patent intelligence for your innovation.

Foamed asphalt warm-mixing recycled pavement construction method

A technology of foamed asphalt and recycled pavement, applied in the direction of roads, roads, road repair, etc., can solve the problems of uneven distribution of raw materials, affect product strength, easy fiber agglomeration, etc., and achieve the effect of excellent water stability

Pending Publication Date: 2022-05-31
江西省交通工程集团建设有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the foamed asphalt raw materials used in the existing pavement construction are raw materials such as slag and fibers added to foamed asphalt, and the fibers are easy to agglomerate, resulting in uneven distribution of raw materials, affecting the strength of the product, and the slag contains rare earths, metals and other raw materials, resulting in product raw materials The singleness is poor and cannot be coordinated, which affects the use effect of the product. As the Chinese patent document CN106146028B discloses a foamed asphalt mixture and a preparation method thereof, the foamed asphalt mixture is made of materials comprising the following components: 2.5 parts by weight of foamed asphalt ~8.5 parts by weight; 5 parts by weight to 100 parts by weight of aggregate; 1 part by weight to 15 parts by weight of mineral powder; 0.5 parts by weight to 1.5 parts by weight of lime; 0.1 parts by weight to 0.5 parts by weight of polyester fiber;

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
  • Foamed asphalt warm-mixing recycled pavement construction method
  • Foamed asphalt warm-mixing recycled pavement construction method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0047] The preparation method of the whisker reinforcing agent of the present embodiment is:

[0048]S1: Put 5-10 parts of silicon carbide whiskers into 10-20 parts of hypochlorous acid solution, then add 1-3 parts of hexadecyltrimethylammonium bromide, and stir at a speed of 200-240r / min 10-20min, the stirring is completed, and the silicon carbide whisker solution is obtained;

[0049] S2: Add a total amount of 1-5% rare earth modification solution to the silicon carbide whisker solution, stir at a speed of 500r / min for 45-55min, and the whisker modification solution is obtained after the stirring is completed;

[0050] S3: adding 5-10% carbon nanotubes to the whisker modification solution, ultrasonic treatment, washing with water and drying to obtain the whisker enhancer.

[0051] The mass fraction of the hypochlorous acid solution in this embodiment is 1-5%.

[0052] The preparation method of the rare earth modified liquid of this embodiment is: add the cerium nitrate aqu...

Embodiment 1

[0056] A kind of construction method of foamed asphalt warm-mixed regenerated pavement of the present embodiment comprises the following steps:

[0057] Step 1, preparation of ore composite agent: mix 5 parts of albite, 1 part of potassium feldspar, 1 part of nepheline powder, 1 part of bentonite, and 1 part according to the weight ratio, and send it to 400 ° C for 20 minutes of calcination, and the calcination is completed. Cool to room temperature to obtain the ore compound;

[0058] Step 2, selection of raw materials: 5 parts of foamed asphalt, 1 part of ore compounding agent, 0.6 part of modified aluminum-magnesium hydrotalcite, 0.1 part of whisker reinforcing agent, and 0.2 part of foaming agent;

[0059] Step 3, mixing of raw materials: Add the raw materials of step 2 to the mixer in order for mixing, the mixing speed is 100r / min, the mixing time is 30min, and the mixing is completed to obtain the mixed mixing material;

[0060] Step 4, laying treatment: pave 5 cm of gr...

Embodiment 2

[0078] A kind of construction method of foamed asphalt warm-mixed regenerated pavement of the present embodiment comprises the following steps:

[0079] Step 1, preparation of ore compounding agent: mix 10 parts of albite, 5 parts of potassium feldspar, 4 parts of nepheline powder, 3 parts of bentonite, and 2 parts according to the weight ratio, and send it to 500 ° C for 30 minutes, and the calcination is completed. Cool to room temperature to obtain the ore compound;

[0080] Step 2, selection of raw materials: 10 parts of foamed asphalt, 3 parts of ore compounding agent, 0.8 part of modified aluminum-magnesium hydrotalcite, 0.3 part of whisker reinforcing agent, and 0.6 part of foaming agent;

[0081] Step 3, mixing of raw materials: Add the raw materials of step 2 to the mixer in order for mixing, the mixing speed is 400r / min, the mixing time is 40min, and the mixing is completed to obtain the mixed mixing material;

[0082] Step 4, laying treatment: pave 7cm of gravel wi...

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
Login to View More

Abstract

The invention discloses a construction method of a foamed asphalt warm-mixing regenerated pavement. The construction method comprises the following steps: preparation of an ore complexing agent: mixing 5-10 parts by weight of albite, 1-5 parts by weight of potassium feldspar, 1-4 parts by weight of nepheline powder, 1-3 parts by weight of bentonite and 1-2 parts by weight of bentonite; according to the construction method of the regenerated pavement, foamed asphalt is matched with raw materials such as an ore complexing agent, modified aluminum-magnesium hydrotalcite and a whisker reinforcing agent, a formed laying raw material is laid for 5-7 cm through gravel with the particle size of 25-35 cm, a roadbed layer is formed, then gravel with the particle size of 1-3 cm is laid on the roadbed layer, and the laying thickness is 1-2 cm, so that a middle layer is formed; the mixed stirring material in the third step is poured on the middle layer, the laying thickness is 1-5 cm, a foamed asphalt layer is formed, and finally the pavement formed through rolling has excellent water stability, freeze-thaw splitting residual strength ratio and breaking strain.

Description

technical field [0001] The invention relates to the technical field of pavement construction, in particular to a method for constructing foamed asphalt warm-mixed regenerated pavement. Background technique [0002] In my country, municipal infrastructure refers to various buildings, structures, equipment, etc. that are set up within the planning and construction of urban areas, towns (townships), and provide residents with paid or unpaid public products and services based on government responsibilities and obligations. The construction of various supporting public infrastructures belongs to the category of municipal engineering, such as common urban roads, bridges, subways, underground pipelines, tunnels, rivers, rail transit, sewage treatment, garbage disposal and other projects, which need to be Foamed asphalt is used for pavement construction on the subgrade. [0003] Most of the foamed asphalt raw materials used in the existing pavement construction are raw materials such...

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): E01C7/32E01C19/10C08L95/00C08K3/34C08K9/04C08K9/06C08K3/26C08K7/10C08K9/02C08J9/04
CPCE01C7/32E01C19/1054C08J9/04C08J9/009C08J9/0066C08J9/0085C08J2395/00Y02W30/91
Inventor 邹玉春黄浩波张凯胡星余思敏聂浩袁萍章哲明陈正国熊根贵
Owner 江西省交通工程集团建设有限公司