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A Design Method of Drainage Asphalt Mixture Proportion Based on Volume Parameters

A technology of drainage asphalt and mix ratio design, which is applied to coagulation pavements, roads, roads and other directions paved on site to achieve the effects of good repeatability, short time consumption, and harmonization of durability and functionality.

Active Publication Date: 2017-05-10
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can make up for the deficiencies of the existing technology and solve the problems encountered in the design of the proportion of drainage asphalt mixture. It is a more convenient and easy-to-operate method of proportion design

Method used

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  • A Design Method of Drainage Asphalt Mixture Proportion Based on Volume Parameters
  • A Design Method of Drainage Asphalt Mixture Proportion Based on Volume Parameters
  • A Design Method of Drainage Asphalt Mixture Proportion Based on Volume Parameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] to combine figure 1 In this embodiment, the design method of drainage asphalt mixture based on volume parameters includes the following steps:

[0034] Step 1. Prepare raw materials:

[0035] a. Asphalt: select high-viscosity modified asphalt for use, and the performance index of the high-viscosity modified asphalt is shown in Table 1;

[0036] b. Aggregate: choose aggregates with hard texture, rough surface and good adhesion (good adhesion means that the adhesion level between aggregate and asphalt is not less than 4);

[0037]The performance index of table 1 embodiment 1 high-viscosity modified asphalt

[0038]

[0039] Step 2. Design grading:

[0040] Step 201. Determine the design void ratio VV according to the climate zone of the asphalt pavement 设 , the VV 设 Meet: 18%≤VV 设 ≤22%;

[0041] In this embodiment, the VV 设 = 18%;

[0042] Step 202, the design void ratio VV has been determined in step 201 设 On the basis of , determine the design aggregate gap...

Embodiment 2

[0066] combine figure 1 In this embodiment, the design method of drainage asphalt mixture based on volume parameters includes the following steps:

[0067] Step 1. Prepare raw materials:

[0068] a. Asphalt: select high-viscosity modified asphalt for use, and the performance index of the high-viscosity modified asphalt is shown in Table 4;

[0069] b. Aggregate: choose aggregates with hard texture, rough surface and good adhesion (good adhesion means that the adhesion level between aggregate and asphalt is not less than 4);

[0070] The performance index of table 4 embodiment 2 high-viscosity modified asphalt

[0071]

[0072]

[0073] Step 2. Design grading:

[0074] Step 201. Determine the design void ratio VV according to the climate zone of the asphalt pavement 设 , the VV 设 Meet: 18%≤VV 设 ≤22%;

[0075] In this embodiment, the VV 设 = 21%;

[0076] Step 202, the design void ratio VV has been determined in step 201 设 On the basis of , determine the design agg...

Embodiment 3

[0099] to combine figure 1 In this embodiment, the design method of drainage asphalt mixture based on volume parameters includes the following steps:

[0100] Step 1. Prepare raw materials:

[0101] a. Asphalt: select high-viscosity modified asphalt, and the performance index of the high-viscosity modified asphalt is shown in Table 7;

[0102] b. Aggregate: choose aggregates with hard texture, rough surface and good adhesion (good adhesion means that the adhesion level between aggregate and asphalt is not less than 4);

[0103] Table 7 Example 3 Performance Index of High Viscosity Modified Asphalt

[0104]

[0105]

[0106] Step 2. Design grading:

[0107] Step 201. Determine the design void ratio VV according to the climate zone of the asphalt pavement 设 , the VV 设 Meet: 18%≤VV 设 ≤22%;

[0108] In this embodiment, the VV 设 = 22%;

[0109] Step 202, the design void ratio VV has been determined in step 201 设 On the basis of , determine the design aggregate gap r...

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Abstract

The invention provides a method for designing the mixing ratio of drainage asphalt mixture based on volume parameters, comprising the following steps: 1. preparing raw materials; 2. designing gradation; 3. calculating the asphalt ratio; Void ratio analysis; Sixth, road performance verification, to obtain the target mix ratio of drainage asphalt mixture. The invention can make up for the deficiencies of the prior art, solve the problems encountered in the design of the proportion of the drainage asphalt mixture, and is a more convenient and easy-to-operate design method for the proportion of the mixture. This method fully considers the engineering reality, and can optimize the aggregate gradation in the early stage of mix ratio design, design a gradation with excellent performance, greatly reduce the blindness and workload of the mix ratio design stage, and significantly improve engineering efficiency.

Description

technical field [0001] The invention belongs to the technical field of highway and urban road design, and in particular relates to a design method of drainage asphalt mixture ratio based on volume parameters. Background technique [0002] Since the drainage asphalt pavement began to be used in Germany in the 1960s, it has formed a relatively mature application technology abroad. Since the first attempt to lay drainage asphalt pavement in my country in 1997, it has been used for more than 10 years. During this period, our research on drainage asphalt mixture is also deepening. At present, most of the design methods of drainage asphalt mixture in China have absorbed and borrowed from the design methods of the United States and Japan. However, due to the different actual conditions of various countries, especially In terms of mix ratio design, there are still the following problems: (1) The various mix ratio design methods after optimization are all based on a large number of e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26E01C7/18
Inventor 刘红瑛张铭铭陈治君徐金枝王春汪海年
Owner CHANGAN UNIV