A method of repairing asphalt pavement in rainy day
A technology for asphalt pavement and rainy weather, which is applied in the field of repairing asphalt pavement in rainy days, and achieves the effect of simple construction, reliable quality and good economy
Active Publication Date: 2020-01-07
广东中和正通工程技术有限公司
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Problems solved by technology
[0004] In order to solve the problem that the asphalt pavement can be repaired in rainy days, the present invention provides a method for repairing asphalt pavement in rainy days
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[0017] A method for repairing asphalt pavement in rainy days mainly comprises the following steps:
[0018] (1) 20% to 30% crushed stones with a particle size of 10-13mm, 30% to 40% crushed stones with a particle size of 5-10mm, 8% to 12% crushed stones with a particle size of 3-5mm, and 18% to 25% Stone chips less than 3mm, 4%~8% mineral powder or cement are transported to the mixing tank of the asphalt mixing equipment, and then 4.5%~5% special asphalt is added and mixed according to the conventional modified asphalt mixture process to make a hydrophobic asphalt mixture ;
[0019] (2) Put the hydrophobic asphalt mixture prepared above into a container with a heating device for standby, which can be directly transported to the construction site for use, or can be left to cool naturally, and heated to 175°C to 185°C before use;
[0020] (3) After rain or in light rain, with no ground water flowing as the standard, excavate and remove the diseased asphalt pavement, then heat t...
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The present invention belongs to the technical field of road pavement maintenance, and more particularly relates to a method for repairing asphalt pavement in rainy day. A purpose of the present invention is to solve the problem of asphalt pavement repairing in rainy day. The method comprises: conveying 20-30% of gravel having a particle size of 10-13 mm, 30-40% of gravel having a particle size of 5-10 mm, 8-12% of gravel having a particle size of 3-5 mm, 18-25% of stone chips having a particle size of less than 3 mm, and 4-8% of ore powder or cement to the stirring cylinder of asphalt mixing equipment, adding 4.5-5% of special asphalt, and stirring according to a conventional modified asphalt mixture process to prepare the hydrophobic asphalt mixture. According to the present invention, the hydrophobic asphalt mixture is prepared by stirring with the special asphalt, and the special emulsified asphalt is adopted as the adhesion layer of the old and new interface, such that the advantages of simple construction, reliable quality and good economy are provided, and the method is suitable for the pot hole repairing of the asphalt pavement in the rainy season.
Description
technical field [0001] The invention belongs to the technical field of highway pavement maintenance, in particular to a method for repairing asphalt pavement in rainy days. Background technique [0002] Water damage is a disease that causes the asphalt film to peel off and the asphalt mixture to loosen due to the intrusion of water into the asphalt and aggregate interface to affect the bonding, and finally leads to the formation of pits on the asphalt pavement. It is one of the main diseases of asphalt pavement in rainy areas. Improper mixture ratio design, substandard asphalt or stone quality, and poor construction quality will cause the asphalt pavement to be damaged by water in rainy days, and the weak points will start to loosen, and then pits will form. If they are not repaired in time, the pits will accelerate and expand. Seriously affect road safety. In the rainy season, the number and area of potholes on the pavement increases at an accelerated rate due to continu...
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IPC IPC(8): E01C23/09
CPCE01C23/0966
Inventor 严永华
Owner 广东中和正通工程技术有限公司