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

A kind of biomass-based modified asphalt mixture and preparation method thereof

A technology for asphalt mixture and biomass, which is applied in the field of biomass-based modified asphalt mixture and its preparation, can solve the problems of high price, low temperature performance and fatigue performance damage of asphalt mixture, uneven quality, etc.

Active Publication Date: 2021-09-28
SHANDONG JIANZHU UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the main problems of the current additive-type high modulus asphalt mixture technology are that there are many types of additives, good and bad, and expensive, and most of the additives will cause damage to the low-temperature performance and fatigue performance of asphalt mixture. The fatigue characteristics of the material itself is a necessary condition to ensure the service life of the high modulus 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
  • A kind of biomass-based modified asphalt mixture and preparation method thereof
  • A kind of biomass-based modified asphalt mixture and preparation method thereof
  • A kind of biomass-based modified asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: A biomass-based high modulus modified asphalt mixture, its preparation method and its evaluation method

[0031] The aggregate is a combination of limestone and basalt, which meets the technical requirements for coarse and fine aggregates in my country's standards; the filler is limestone powder. The design mixture and the design gradation of high modulus asphalt mixture are shown in Table 1.

[0032] Table 1 Design gradation of high modulus asphalt mixture

[0033]

[0034] Based on the calculation of 100 parts of high modulus asphalt mixture, the following components are also included: 90 parts of aggregate, 4.95 parts of base asphalt, 0.27 parts of biomass-based asphalt modifier, and the balance is mineral powder. Its preparation method is as follows: a. First, heat 70# asphalt to 180°C, then add molecular lubricant under low-speed shear (rotation speed 2500r / min), add biomass-based asphalt modifier after shearing for 10 minutes, and shear Adjust the ...

Embodiment 2

[0046] Example 2: A biomass-based high modulus modified asphalt mixture, its preparation method and its evaluation method

[0047] The aggregate is a combination of limestone and basalt, which meets the technical requirements for coarse and fine aggregates in my country's standards; the filler is limestone powder. The designed mixture and the design gradation of high modulus asphalt mixture are shown in Table 4.

[0048] Table 4 Design gradation of biomass-based high modulus asphalt mixture

[0049]

[0050] Based on the calculation of 100 parts of high modulus asphalt mixture, the following components are also included: 90 parts of aggregate, 4.95 parts of base asphalt, 0.3 part of biomass-based asphalt modifier, 1 part of molecular lubricant, 0.05 part of reaction aid, The balance is mineral powder. Its preparation method is as follows:

[0051] a. First heat 90# asphalt to 170°C, then add molecular lubricant under low-speed shearing (speed 2500r / min), add biomass-base...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a biomass-based modified asphalt mixture and a preparation method thereof. The biomass-based high-modulus modified asphalt mixture includes the following components in terms of mass percentage: 75% to 90% of aggregate; 1.5% to 96% of base asphalt; 0.02% to 90.5% of biomass-based asphalt modifier; Molecular lubricant 1% to 4%; reaction additive 0.03% to 0.1%; mineral powder 1.5% to 6%. The biomass-based modified asphalt mixture provided by the present invention is very close to petroleum asphalt as a product obtained by biomass pyrolysis and other processes, and the two have good compatibility and stability in chemical composition, which can ensure that they are used in asphalt To achieve a good dispersion effect, give full play to the role of modified components and realize the anti-fatigue function.

Description

technical field [0001] The invention relates to the field of road engineering materials, in particular to a biomass-based modified asphalt mixture and a preparation method thereof. Background technique [0002] With the development of my country's national economy, the traffic volume has increased rapidly, and the mileage of my country's highways has reached the first place in the world. Because asphalt pavement has the characteristics of good driving comfort, fast construction speed, and convenient maintenance, it is more and more widely used in pavement structures. At the same time, heavy and overloaded road traffic is becoming more and more common. In addition, the frequency of extreme and continuous high-temperature climates in many places is increasing, and the rutting disease of asphalt pavement is becoming more and more serious. It has become the first of several major diseases, directly affecting driving comfort and performance. safety. According to incomplete stat...

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 Patents(China)
IPC IPC(8): C04B26/26G01N33/42
CPCC04B26/26C04B2111/0075G01N33/42C04B14/28C04B14/14C04B2103/008C04B24/283C04B24/42C04B24/40C04B22/068C04B14/026C04B14/024C04B14/30C04B14/06C04B24/00C04B24/128C04B2103/0068
Inventor 任瑞波赵品晖孟伟坤徐强耿立涛王立志周浩李志刚
Owner SHANDONG JIANZHU UNIV