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Construction method of rut-resisting and spalling-resisting asphalt concrete pavement

A technology of asphalt concrete and construction method, which is applied to the coagulation pavement, roads, roads and other directions of on-site paving, can solve problems such as affecting driving comfort and safety, reducing economic and social benefits, and improving Marshall stability. and freeze-thaw splitting tensile strength, improved adhesion, enhanced interaction and integrity

Active Publication Date: 2018-12-07
中交二航局第一工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only affects the comfort and safety of driving, but also reduces the economic and social benefits, so the prevention and treatment of rutting disease is the primary issue in today's road construction

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A construction method for anti-rutting and anti-stripping asphalt concrete pavement,

[0019] First, prepare anti-rutting agent modified asphalt: add 40 parts of ethyl acetate into the flask, raise its temperature to 50-55°C, add 11 parts of cyclooctane and stir for 8 minutes, raise the temperature to 60°C, drop Add 6 parts of hydroxyl-terminated polybutadiene, stir while adding dropwise, and control the dropping rate at 4 ml / min. After the dropwise addition is completed, adjust the pH value to 6, raise the temperature to 80°C, and finally add polyoxyethylene polyoxypropylene pentaerythritol 5 parts of ether and 1 part of glycidyl methacrylate, stirred for 10 minutes to obtain anti-rutting agent,

[0020] Heat 120 parts of asphalt to 80-85°C, add 7 parts of the obtained anti-rutting agent and stir for 10-15 minutes, then add 30 parts of nano-titanium dioxide and mix evenly, raise the temperature to 130°C, and use a high-speed shearer for stirring and shearing , the sti...

Embodiment 2

[0024] A construction method for anti-rutting and anti-stripping asphalt concrete pavement,

[0025] First, prepare anti-rutting agent modified asphalt: add 46 parts of ethyl acetate into the flask, raise its temperature to 50°C, add 15 parts of cyclooctane and stir for 5-10 minutes, raise the temperature to 65°C, drop Add 4 parts of hydroxyl-terminated polybutadiene, stir while adding dropwise, and control the drop rate at 5 ml / min. After the dropwise addition is completed, adjust the pH value to 6.5, raise the temperature to 75-80°C, and finally add polyoxyethylene polyoxygen 4 parts of propylene pentaerythritol ether and 2 parts of glycidyl methacrylate, stirred for 5-10 minutes to obtain anti-rutting agent,

[0026] Heat 110 parts of asphalt to 80-85°C, add 15 parts of the obtained anti-rutting agent and stir for 10-15 minutes, then add 20 parts of nano-titanium dioxide and mix evenly, raise the temperature to 120°C, and use a high-speed shearer for stirring and shearing ...

Embodiment 3

[0030] A construction method for anti-rutting and anti-stripping asphalt concrete pavement,

[0031] First prepare anti-rutting agent modified asphalt: add 40 parts of ethyl acetate to the flask, raise its temperature to 55°C, add 14 parts of cyclooctane and stir for 5-10 minutes, then raise the temperature to 60-65°C , add 7 parts of hydroxyl-terminated polybutadiene dropwise, stir while adding dropwise, and control the drop rate at 3-5 ml / min. 5 parts of oxyethylene polyoxypropylene pentaerythritol ether and 1 part of glycidyl methacrylate, stirred for 5-10 minutes to obtain anti-rutting agent,

[0032] Heat 140 parts of asphalt to 80-85°C, add 15 parts of the obtained anti-rutting agent and stir for 10-15 minutes, then add 25 parts of nano-titanium dioxide and mix evenly, raise the temperature to 120°C, and use a high-speed shearer for stirring and shearing , the stirring shear time is 15 minutes, the stirring shear speed is 2200rpm, then the temperature is raised to 140-1...

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PUM

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Abstract

The invention relates to a construction method of anti-rutting and anti-stripping asphalt concrete pavement, which comprises the following steps: firstly, preparing modified asphalt of anti-rutting agent: adding 40-50 parts by weight of ethyl acetate into a flask,and increasing the temperature to 50-55 DEG C, adding 10-15 parts of cyclooctane and stirring for 5-10 minutes, increasing the temperature to 60-65 DEG C, dropwise adding 3-7 parts of hydroxyl-terminated polybutadiene with stirring at the same time of dropping, wherein the dropping acceleration is controlled at 3-5 ml / min, that anti-stripping agent of the invention remarkably improve the adhesion performance of the asphalt and other materials of the asphalt concrete, improve the Marshall stability of the asphalt concrete and the tensile strength of freeze-thaw splitting, and improves the service life of the asphalt concrete at the same time.

Description

technical field [0001] The invention relates to a construction method for an anti-rutting and anti-stripping asphalt concrete pavement, and belongs to the technical field of road construction. Background technique [0002] Due to its excellent performance, asphalt pavement occupies a considerable proportion in highways. But in recent years, due to the limitations of the performance of asphalt pavement raw materials and the influence of external factors such as traffic volume, increase of heavy and overloaded vehicles, and deterioration of weather conditions, asphalt pavement is facing severe tests. Many newly built asphalt pavements have early diseases soon after they are opened to traffic, among which rutting has become one of the most serious early diseases that endanger asphalt pavement. The appearance of rutting makes the smoothness of the road surface worse, and causes other diseases, such as mesh cracks, potholes, potholes, etc. This not only affects the comfort and ...

Claims

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Application Information

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IPC IPC(8): E01C7/18E01C7/22E01C7/26C04B28/00
CPCC04B28/00C04B2111/0075E01C7/18E01C7/182E01C7/22E01C7/26E01C7/265C04B24/36C04B18/146C04B24/383C04B14/06C04B2103/0068
Inventor 张学才
Owner 中交二航局第一工程有限公司
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