Special asphalt mixture for sand-containing fog seal

A technology of asphalt mixture and fog seal layer, which is applied in the field of special asphalt materials, can solve problems such as impracticability, and achieve the effects of increasing service life, increasing anti-aging, and improving internal structure

Active Publication Date: 2015-07-15
NANJING ROAD KEEPER TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Most of the asphalt materials that play a bonding role in the sand mist seal layer are modified emulsified asphalt, but the modified asphalt in the prior art still has certain d

Method used

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  • Special asphalt mixture for sand-containing fog seal
  • Special asphalt mixture for sand-containing fog seal
  • Special asphalt mixture for sand-containing fog seal

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the embodiments, so that those skilled in the art can implement it with reference to the description.

[0023] This case proposes a special asphalt mixture used in a sand mist seal layer, which includes the following materials in parts by weight:

[0024]

[0025] Wherein, the accelerator is thioacetamide or sulfolane.

[0026] Emulsified asphalt is a prior art, and it is composed of base asphalt, emulsifier and water, and the specific components of emulsified asphalt are not limited. The extender oil can preferably be selected from engine oil, heavy oil or a combination thereof, and the requirement of the extender oil is not high, and waste recycled engine oil or heavy oil can be used.

[0027] Polyurethane resins and polysiloxane resins are both thermosetting resins. Polyurethane resin can improve the toughness, wear resistance, aging resistance, high stability and bonding perform...

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Abstract

The invention discloses a special asphalt mixture for a sand-containing fog seal. The special asphalt mixture comprises the following materials by weight: emulsified asphalt, polyurethane resin, polysiloxane resin, carbon fiber, an accelerant, butadiene-styrene rubber liquid and extending oil, wherein the accelerant is thioacetamide or sulfolane. According to the invention, through optimization of the formula for the special asphalt mixture, the internal structure of the special asphalt mixture is microscopically improved; the added polyurethane resin and polysiloxane resin can effectively improve weatherability, bonding strength and toughness of the asphalt mixture; the added carbon fiber can enhance the structural strength and resistance to low temperature and high temperature of the asphalt mixture; the added accelerant has higher thermal stability compared with traditional sulfur powder, amine and imidazole accelerants; and the added metal oxide or sinter can improve ageing resistance, corrosion resistance and cracking resistance of the asphalt mixture and greatly prolongs the service life of an asphalt pavement.

Description

technical field [0001] The invention relates to a special asphalt material, in particular to a special asphalt mixture used in a sand-mist seal layer. Background technique [0002] The sand mist seal layer is composed of special asphalt, fine aggregates, polymer modifiers and catalysts, etc., which can penetrate into the aggregate joints, flow into the pores, and "transfuse" the road surface, thereby restoring the asphalt viscosity of the road surface. Adhesion, fill tiny cracks and gaps, prevent water seepage from the road surface, and the fine aggregate sprayed at the same time provides good anti-skid ability. As a preventive pavement maintenance technology, the sand mist sealant can prevent various diseases caused by peeling of the asphalt film on the pavement, and play a role in beautifying the pavement. Most of the asphalt materials that play a bonding role in the sand mist seal layer are modified emulsified asphalt, but the modified asphalt in the prior art still has ...

Claims

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Application Information

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IPC IPC(8): C04B26/26C04B111/72
Inventor 覃勉赵泽徐啸
Owner NANJING ROAD KEEPER TECH
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