Asphalt mixture for heavy traffic roads and preparation method thereof

An asphalt mixture, heavy traffic technology, applied in building insulation materials, building components, buildings, etc., can solve the problems of anti-wear and anti-rutting effects, etc., and achieve great social significance and industry value, little change in asphalt, Excellent anti-rutting performance

Active Publication Date: 2017-12-05
郑卫忠 +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many kinds of these additives, which have certain anti-wear and anti-rutting effects, but there are still problems that the anti-wear and anti-rutting effects are not very ideal.

Method used

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  • Asphalt mixture for heavy traffic roads and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042]An asphalt mixture for heavy traffic roads, comprising the following raw materials in parts by weight: 50 parts of asphalt, 200 parts of mineral powder, 50 parts of aggregate, 5 parts of inorganic fiber, 10 parts of ultra-high molecular weight polyethylene, and 20 parts of rubber powder , 10 parts of diatomaceous earth.

[0043] Among them, the asphalt technical indicators used are as follows:

[0044] (1) The penetration of a load of 100 grams sinking into a grease sample at 25°C within 5 seconds is 2-4 mm; the penetration index is ≥ -0.4;

[0045] (2) Kinematic viscosity at 135°C≤2.8Pa·s; dynamic viscosity at 60°C≥4500Pa·s;

[0046] (3) Viscosity and toughness≥5N·m; toughness≥2.5N·m; flash point≥230℃; solubility≥99%; softening point≥60℃;

[0047] (4) During the storage stability segregation test, the softening point difference after storage for 48 hours is ≤2.5°C;

[0048] (5) Elastic recovery at 25°C ≥ 70%;

[0049] (6) Dynamic shear at 35°C ≥ 1000kPa, dynamic she...

Embodiment 2

[0060] An asphalt mixture for heavy traffic roads, comprising the following raw materials in parts by weight: 60 parts of asphalt, 230 parts of mineral powder, 60 parts of aggregate, 6 parts of inorganic fiber, 12 parts of ultra-high molecular weight polyethylene, and 25 parts of rubber powder , 12 parts of diatomaceous earth.

[0061] Wherein, the technical index of described asphalt is as follows:

[0062] (1) The penetration of a load of 100 grams sinking into a grease sample at 25°C within 5 seconds is 2-4 mm; the penetration index is ≥ -0.4;

[0063] (2) Kinematic viscosity at 135°C≤2.8Pa·s; dynamic viscosity at 60°C≥4500Pa·s;

[0064] (3) Viscosity and toughness≥5N·m; toughness≥2.5N·m; flash point≥230℃; solubility≥99%; softening point≥60℃;

[0065] (4) During the storage stability segregation test, the softening point difference after storage for 48 hours is ≤2.5°C;

[0066] (5) Elastic recovery at 25°C ≥ 70%;

[0067] (6) Dynamic shear at 35°C ≥ 1000kPa, dynamic she...

Embodiment 3

[0078] An asphalt mixture for heavy traffic roads, comprising the following raw materials in parts by weight: 80 parts of asphalt, 250 parts of mineral powder, 80 parts of aggregate, 8 parts of inorganic fiber, 15 parts of ultra-high molecular weight polyethylene, and 30 parts of rubber powder , 15 parts of diatomaceous earth and 3 parts of phosphorus-containing organic matter.

[0079] Wherein, the technical index of described asphalt is as follows:

[0080] (1) The penetration of a load of 100 grams sinking into a grease sample at 25°C within 5 seconds is 2-4 mm; the penetration index is ≥ -0.4;

[0081] (2) Kinematic viscosity at 135°C≤2.8Pa·s; dynamic viscosity at 60°C≥4500Pa·s;

[0082] (3) Viscosity and toughness≥5N·m; toughness≥2.5N·m; flash point≥230℃; solubility≥99%; softening point≥60℃;

[0083] (4) During the storage stability segregation test, the softening point difference after storage for 48 hours is ≤2.5°C;

[0084] (5) Elastic recovery at 25°C ≥ 70%;

[00...

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Abstract

The invention discloses an asphalt mixture for a heavy traffic road. The asphalt mixture is prepared from the following raw materials in parts by weight: 50-100 parts of asphalt, 200-350 parts of mineral powder, 50-100 parts of aggregate, 5-10 parts of inorganic fiber, 10-20 parts of ultrahigh molecular weight polyethylene, 20-40 parts of rubber powder and 10-20 parts of kieselguhr. The asphalt mixture disclosed by the invention has high stability and obviously low needle penetration and is a harder asphalt mixture while the dynamic viscosity is lower than that of common asphalt. Therefore, the asphalt mixture disclosed by the invention has better constructability and higher viscosity and toughness and shows stronger mechanical strength; and moreover, the asphalt mixture has good elastic recovery property and shows perfect high-temperature stability.

Description

technical field [0001] The invention belongs to the field of road construction, and in particular relates to an asphalt mixture used for heavy traffic roads and a preparation method thereof. Background technique [0002] Heavy traffic roads have the following phenomena: overweight vehicles and large traffic volume lead to heavy loads on the road, and the road surface will be damaged after several years of road use. [0003] With the development of the national economy and highway transportation, the proportion of heavy-duty freight vehicles in the transportation vehicles continues to increase, the total load quality and axle load quality of vehicles continue to increase, and they are becoming larger and larger, and the replacement speed is very fast. Heavy-duty vehicles with single axle exceeding 10t, double axle exceeding 18t, and double axle exceeding 22t have become the main body of transportation. Moreover, due to the improvement of road grades and the drive of high pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C04B26/26
CPCC04B26/26C04B2111/0075C04B18/12C04B14/08C04B14/4631C04B18/22C04B24/003
Inventor 郑卫忠代卫东李晓勇梅兴民黄小凯张云龙王闯安许东朱忠丽张新民雷景民金松灿蒋利萍
Owner 郑卫忠
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