Thermal regenerant for asphalt concrete pavement and preparation method thereof

Abstract

The invention discloses a thermal regenerant for an asphalt concrete pavement, which is prepared form the following components in parts by weight: 40 to 60 parts of tung oil, 0.15 to 0.25 part of anhydrous AlCl3 and 2 to 4 parts of dimethyl phthalate. The invention also discloses a preparation method of the thermal regenerant, comprising the following steps: firstly dissolving the anhydrous AlCl3with anhydrous ethanol; adding the dissolved anhydrous AlCl3 into the tung oil and uniformly stirring to obtain the tung oil mixed solution; and finally, adding DOP into the tung oil mixed solution, carrying out reaction under 240 DEG C for 15 min to obtain the thermal regenerant. The invention overcomes the disadvantages of low utilization ratio, long construction period, low construction quality, poor stability of regenerant and high processing cost of an old asphalt pavement in the prior pavement regeneration technology.

Description

technical field [0001] The invention relates to the technical field of asphalt concrete pavement thermal regeneration, in particular to a thermal regeneration agent for asphalt concrete pavement and a preparation method thereof. Background technique [0002] At present, there are two main methods of traditional asphalt pavement maintenance technology, one is to mill and remove the old asphalt pavement, and then pave new asphalt concrete. The other is to cold regenerate the old asphalt pavement as the subbase of the pavement. The main disadvantages of the above technologies are: [0003] ① A large amount of old asphalt mixture is discarded, causing a great waste of stone and asphalt, and polluting the environment; [0004] ②In terms of construction period, traditional asphalt pavement maintenance and repair methods have many procedures and long construction time, which affects the normal traffic of the road; [0005] ③ In terms of construction quality, when the traditional...

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Problems solved by technology

[0003] ① A large amount of old asphalt mixture is discarded, causing a great waste of stone and asphalt, and polluting the environment;

[0004] ②In terms of construction period, traditional asphalt pavement maintenance and repair methods have many procedures and long construction time, which affects the normal traffic of the road;

[0005] ③ In terms of construction quality, when the traditional asphalt pavement maintenance method is used for construction, the hot asphalt mixture is paved on the cold underlayment, and the contact interface with the surrounding is cold mixture, which causes the layer to be weak Interface and longitudinal cold joints, the compaction of these parts is difficult to meet the requirements during construction

[0007] ①The regenerant is unstable and easy to volatilize;

[0008] ②The processing technology is relatively complicated, the cost is high, and it is not easy to produce in large quantities

[0009] ③The effect of restoring old asphalt performance is poor, and the amount of additives is relatively large

[0010] ④The properties are relatively viscous and difficult to construct

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