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

Determination method of optimal amount of asphalt in high viscosity and high elastic stress dissipating materials

A technology for the optimal amount of asphalt and the amount of asphalt, which is applied in the field of asphalt and sand and gravel preparation, and can solve the problems of impact and low service life

Active Publication Date: 2016-04-27
BEIJING MUNICIPAL ROAD & BRIDGE BUILDING MATERIALGRP +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bridge deck pavement has become one of the weakest parts of bridge engineering, and its service life is much lower than that of the main structure of the bridge. Although it is an auxiliary project of the bridge, its service quality has a huge impact on the entire bridge and even the entire road network

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
  • Determination method of optimal amount of asphalt in high viscosity and high elastic stress dissipating materials
  • Determination method of optimal amount of asphalt in high viscosity and high elastic stress dissipating materials
  • Determination method of optimal amount of asphalt in high viscosity and high elastic stress dissipating materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A new type of high-viscosity and high-elastic stress dissipation material is composed of the following components in a weight ratio: high-viscosity asphalt binder: aggregate: polyester fiber = 7~11:100:0.03; the aggregate has a particle size of 5~ 8 basalt, machine-made sand with a particle size of 3 to 5, natural sand and mineral powder are composed in a certain ratio; the aggregate ratio is 6:62:30:2.

[0028] Estimate the appropriate amount of asphalt P for asphalt mixture based on engineering experience b The estimation method is equivalent to the method for determining the oil-stone ratio of the hot-mix asphalt mixture. The estimated asphalt consumption is 8.5%. The mixture is formed by rotating compaction 8 times, 50 times and 100 times, and the asphalt consumption is determined to be 7.5%. , 8.0%, 8.5%, 9.0%, 9.5%, the volume index of the mixture to determine the optimal amount of asphalt, where the mixing temperature is 180°C and the compaction temperature is 160°C....

Embodiment 2

[0044] A new type of high-viscosity and high-elastic stress dissipation material is composed of the following components in a weight ratio: high-viscosity asphalt binder: aggregate: polyester fiber = 7~11:100:0.03; the aggregate has a particle size of 5~ 8 basalt, machine-made sand with a particle size of 3 to 5, natural sand and mineral powder are composed in a certain ratio; the aggregate ratio is 7:61:29:3.

[0045] Estimate the appropriate amount of asphalt P for asphalt mixture based on engineering experience b The estimation method is equivalent to the method for determining the oil-stone ratio of the hot-mix asphalt mixture. The estimated asphalt consumption is 8.5%. The mixture is formed by rotating compaction 8 times, 50 times and 100 times, and the asphalt consumption is determined to be 7.5%. , 8.0%, 8.5%, 9.0%, 9.5%, the volume index of the mixture to determine the optimal amount of asphalt, where the mixing temperature is 180°C and the compaction temperature is 160°C....

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
voidageaaaaaaaaaa
Login to View More

Abstract

The invention relates to a method for determining the optimal using amount of asphalt in a high-viscosity high-elasticity stress dissipation material, belonging to the technical field of manufacture of the road asphalt pavement material. The mixture is formed by a rotary compaction method, the voidages VV, the voids in mineral aggregate VMA and the asphalt saturabilities (VFA) of the mixture can be measured respectively under different asphalt using amounts when the mixture is compacted for 8 times, 50 times and 100 times respectively, and the corresponding voidages VV, the voids in mineral aggregate VMA and the asphalt saturabilities (VFA) under different compaction times are within regulated ranges, and the optimal using amount of asphalt is in the range. The property of the asphalt with the optical using amount can meet the pavement engineering requirement, the stress dissipation material has excellent anti-fatigue performance, and the method is reliable, simple and practical.

Description

Technical field [0001] The present invention is a material used for paving and maintenance of asphalt pavement, especially used in bridge deck paving, cement concrete pavement paving asphalt pavement and other projects. The material is made of high-viscosity and high-elastic modified asphalt and sandstone materials. It has the characteristics of excellent fatigue resistance, can dissipate the stress of the structural layer, prevent and delay the bottom-up reflection crack disease, maintain the road performance to the maximum extent and extend the service life of the road surface. It belongs to the technology of road asphalt pavement material manufacturing. field. The invention particularly relates to a method for determining the optimal amount of asphalt in the high-viscosity and high-elastic stress dissipation material. Background technique [0002] In the 1980s, cement pavement developed rapidly across the country due to its high strength, good stability, and low construction ...

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): C04B26/26
CPCC04B26/26C04B14/041C04B14/06C04B18/12C04B16/0683
Inventor 柳浩杨丽英董雨明王建国李振王真李恩光王宝新
Owner BEIJING MUNICIPAL ROAD & BRIDGE BUILDING MATERIALGRP