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

Preparation device and preparation method of asphalt concrete containing modified acidic aggregate

A technology for asphalt concrete and a preparation device, which is applied in the field of anti-seepage of asphalt concrete, can solve problems such as high cost of asphalt concrete, and achieve the effects of enhanced adhesion, good permeability and moderate chemical reaction speed.

Pending Publication Date: 2022-05-13
XIAN UNIV OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation device for asphalt concrete containing modified acidic aggregates, to solve the problem of high cost of producing asphalt concrete in areas lacking alkaline stone materials

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
  • Preparation device and preparation method of asphalt concrete containing modified acidic aggregate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Granite gravel used for the asphalt concrete core wall of a pumped storage power station in Xinjiang is used as the acid aggregate, and Karamay 90#A grade asphalt is used as the asphalt;

[0046] Step 1, pretreating the acidic aggregate: according to the ratio of asphalt concrete, the amount of acidic aggregate with different particle sizes is obtained, and the obtained acidic aggregate with different particle sizes is sieved by an aggregate sifter;

[0047] Step 2, put the screened acidic aggregate into the aggregate box 1, put the first silane emulsion container 5 into the silane emulsion 6, put the first papermaking sludge container 9 into the papermaking sludge ash 10, and open the The upper main conveyor belt 10, the valve 4 on the aggregate box 1, the valve 4 on the first silane emulsion container 5, and the valve 4 on the first papermaking sludge container 9, the acidic aggregate is wetted by the silane emulsion 6 and then Paper-making sludge ash 10 wraps the abd...

Embodiment 2

[0053] The difference from Implementation 1 is that the conveying speed of the lower auxiliary conveyor belt 13 is uniformly increased from 2m / s to 3m / s, and when it reaches 3m / s, it is then uniformly decreased from 3m / s to 2m / s, and so on. , the completion time of each increment and each decrement is 10s, and the spill rate of the first silane emulsion container, the first paper sludge container, the second paper sludge container, and the second silane emulsion container is 4m / s; the heater The heating temperature of 17 was 200°C.

[0054] The Marshall stability of asphalt concrete was evaluated according to the "Hydraulic Asphalt Concrete Test Regulations" (DL / T5362-2009).

Embodiment 3

[0056] The difference from Implementation 1 is that the conveying speed of the lower auxiliary conveyor belt 13 is uniformly increased from 3m / s to 4m / s, and when it reaches 4m / s, it is then uniformly decreased from 4m / s to 3m / s, and so on. , the completion time of each increment and each decrement is 10s, and the spill rate of the first silane emulsion container, the first paper sludge container, the second paper sludge container, and the second silane emulsion container is 6m / s; the heater The heating temperature of 17 was 300°C.

[0057] The Marshall stability of asphalt concrete was evaluated according to the "Hydraulic Asphalt Concrete Test Regulations" (DL / T5362-2009).

[0058] Marshall stability test results are shown in the table below:

[0059] project Comparative example 1 Comparative example 2 Example 1 Example 2 Example 3 Marshall stability 4.75kN 7.93kN 6.77kN 7.02kN 7.34kN

[0060] According to the water stability coeffici...

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 preparation device comprises an upper-layer main conveying belt, an aggregate box, a first silane emulsion container and a first paper mill sludge container are sequentially arranged above the upper-layer main conveying belt in the conveying direction, and a lower-layer auxiliary conveying belt is arranged below the upper-layer main conveying belt. A second papermaking sludge container and a second silane emulsion container are sequentially arranged between the upper-layer main conveying belt and the lower-layer auxiliary conveying belt in the conveying direction of the lower-layer auxiliary conveying belt, a trolley is arranged at the conveying tail end of the lower-layer auxiliary conveying belt, a gravity sensing device is arranged below the trolley, and a stirrer is arranged beside the trolley. A heater is arranged at the bottom of the stirrer. The invention solves the problem of high cost of manufacturing asphalt concrete in areas lacking alkaline stones.

Description

technical field [0001] The invention belongs to the technical field of asphalt concrete anti-seepage, relates to a preparation device for asphalt concrete containing modified acid aggregate, and also relates to a preparation method for asphalt concrete containing modified acid aggregate. Background technique [0002] Asphalt concrete has been widely used in water conservancy and hydropower projects because of its excellent anti-seepage performance, strong ability to adapt to foundation deformation, and easy repair and engineering maintenance once defects occur. From a chemical point of view, in the hot mixing process of asphalt mixture, when combined with acidic asphalt, alkaline aggregate and asphalt will chemically react to form water-insoluble compounds and produce chemical adsorption, while acidic aggregate There is no chemical reaction with acidic asphalt to make the structure more stable. It can only produce physical adsorption such as intermolecular force. The adhesiv...

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): C04B20/12C04B26/26
CPCC04B20/12C04B26/26C04B14/00C04B20/1051C04B20/1018C04B20/126C04B18/103C04B24/42C04B20/023C04B20/1055C04B20/123
Inventor 李炎隆刘云贺李阳周恒李文刚
Owner XIAN UNIV OF TECH