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Anti-stripping agent for asphalt cold paving materials and preparation method of anti-stripping agent

An anti-stripping agent and cold patching technology, which is applied in the field of road engineering materials, can solve problems such as incomplete strength formation, asphalt and mineral material peeling, and reduce the adhesion performance of asphalt and stone materials, so as to improve the bonding performance and enhance the adhesion. The effect of improving the junction performance and improving the water resistance stability

Inactive Publication Date: 2019-11-12
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The strength of asphalt cold patch is gradually formed with the volatilization of diesel oil. During this process, if it encounters rainwater, because the strength is not fully formed, moisture will easily penetrate into the interior of asphalt cold patch, causing the asphalt and mineral materials to peel off, resulting in water damage. ; In addition, due to the addition of diesel oil, the adhesion between asphalt and stone is also reduced, which further reduces the water stability of asphalt cold patch

Method used

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  • Anti-stripping agent for asphalt cold paving materials and preparation method of anti-stripping agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The asphalt used is No. 70 A-grade road petroleum asphalt, the aggregate is limestone crushed stone, the filler is limestone powder, the diesel is commercially available No. 0 diesel oil, and the cold supplement is fatty acid ammonium cold supplement produced by Xi'an Bowang New Materials Co., Ltd. All other chemical reagents were commercially available.

[0028] 1. Synthesize special cold tonic first

[0029] (1) Select and weigh trichlorosilane, allyl methacrylate, N,N'-di(2-naphthyl)-p-phenylenediamine in a molar ratio of 1:1.01:0.4, and mix trichlorosilane and N , N'-bis(2-naphthyl)-p-phenylenediamine is put into the reactor in proportion and stirred evenly, then titrate allyl methacrylate while stirring, the reaction temperature is 90°C, the titration time is 1h, after the titration is completed , the temperature was raised to 115° C., and the reaction was held for 0.5 h to obtain the product A.

[0030] (2) Put the product A into the reactor, add methanol dropwi...

Embodiment 2

[0044] The asphalt used is No. 70 A-grade road petroleum asphalt, the aggregate is limestone crushed stone, the filler is limestone powder, the diesel is commercially available No. 0 diesel oil, and the cold supplement is fatty acid ammonium cold supplement produced by Xi'an Bowang New Materials Co., Ltd. All other chemical reagents were commercially available.

[0045] 1. Synthesize special cold tonic first

[0046] (1) Select and weigh trichlorosilane, allyl methacrylate, N,N'-di(2-naphthyl)-p-phenylenediamine in a molar ratio of 1:1.005:0.6, and mix trichlorosilane and N , N'-bis(2-naphthyl)-p-phenylenediamine is put into the reactor according to the proportion and stirred evenly, then titrate allyl methacrylate while stirring, the reaction temperature is 100°C, the titration time is 1.3h, and the titration is completed Afterwards, the temperature was raised to 120° C., and the reaction was kept for 0.8 h to obtain the product A.

[0047] (2) Put the product A into the re...

Embodiment 3

[0061] The asphalt used is No. 70 A-grade road petroleum asphalt, the aggregate is limestone crushed stone, the filler is limestone powder, the diesel is commercially available No. 0 diesel, and the cold supplement is a fatty acid ammonium cold supplement produced by Xi'an Bowang New Materials Co., Ltd. All other chemical reagents were commercially available.

[0062] 1. Synthesize special cold tonic first

[0063] (1) Select and weigh trichlorosilane, allyl methacrylate, N,N'-di(2-naphthyl)-p-phenylenediamine in a molar ratio of 1:1.02:0.8, and mix trichlorosilane and N , N'-bis(2-naphthyl)-p-phenylenediamine is put into the reactor according to the proportion and stirred evenly, then titrate allyl methacrylate while stirring, the reaction temperature is 110°C, the titration time is 1.5h, and the titration is completed Afterwards, the temperature was raised to 125° C., and the reaction was kept for 1 h to obtain the product A.

[0064] (2) Put the product A into the reactor...

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Abstract

The invention discloses an anti-stripping-type asphalt cold paving material and a preparation method thereof. The anti-stripping-type asphalt cold paving material is prepared from aggregate, a filler,diesel oil, asphalt, a cold paving agent and a special anti-stripping agent which are mixed, wherein the special anti-stripping agent is prepared in the mode that trichlorosilane, allyl methacrylateand N,N'-bis(2-naphthyl)-p-phenylenediamine react and then are mixed with lime. Aiming at solving the problems that a current cold paving asphalt mixture is poor in water stability and slow in strength formation, a modifier capable of enhancing the asphalt cold paving material mineral aggregate and asphalt bonding property is developed, stripping between asphalt and mineral aggregate in the cold paving material is prevented under the action of water, and the water-resistant stability property of the asphalt cold paving material is improved.

Description

technical field [0001] The invention belongs to the technical field of road engineering materials, and in particular relates to an anti-stripping asphalt cold patch material and a preparation method thereof. Background technique [0002] Before the road reaches its service life, there are often pits, damage and other diseases. In order to maintain the proper trafficability of the road, these parts need to be repaired. Due to the characteristics of small area and scattered locations of the repaired parts of the road, during the maintenance and construction process of hot mix asphalt mixture, the heat of the mixture will be lost rapidly, and the temperature will drop severely, making the road surface difficult to compact; and the amount of mixture used in the maintenance process Mechanized mixing is generally used for hot mix asphalt mixture, and the mixing volume is large, which is easy to cause waste. Therefore, in the process of pavement repair, asphalt cold patch is gener...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B24/42C04B103/60C04B111/72
CPCC04B26/26C04B40/0046C04B2103/60C04B2111/72C04B2201/50C04B24/00C04B24/08C04B24/42C04B14/28C04B14/14C04B14/04C04B22/064C04B22/066
Inventor 黄绍龙沈凡储昭胜黄小霞罗宵李强蔡祥
Owner HUBEI UNIV
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