Flame-retarding asphalt and preparation method thereof

Abstract

The invention belongs to the technical field of preparation of novel materials for roads and in particular relates to flame-retarding asphalt and a preparation method thereof. The preparation method comprises the following steps: enabling petroleum asphalt to react with vinyltrimethoxysilane and an initiator; then adding a solvent and carrying out ultrasonic dispersion; then reacting with a photoinitiator and mercaptoacetic acid to obtain a product; carrying out ultrasonic dispersion on the product and a cobalt acetate solution; then stirring and drying to obtain modified petroleum asphalt; then heating and stirring the petroleum asphalt, nano carbon black, calcium alginate, a coupling agent and a smoke suppressant; finally, naturally cooling to room temperature to obtain the flame-retarding asphalt. The flame-retarding asphalt prepared by the preparation method has relatively good smoke suppression and flame-retarding effects; meanwhile, smoke generated in a combustion process of the flame-retarding asphalt does not cause dangers to human bodies and environment, so that the flame-retarding asphalt is an ideal pavement materials for the roads.

Description

technical field

[0001] The invention belongs to the technical field of preparation of new road materials, and in particular relates to a flame-retardant asphalt and a preparation method thereof. Background technique

[0002] With the development of high-grade highways, the number of highway tunnels continues to increase. The rigid cement concrete pavement commonly used in tunnels is gradually replaced by smooth, wear-resistant and low-noise flexible asphalt concrete pavement. During the use of tunnel asphalt pavement, the fire safety of asphalt concrete pavement has attracted more and more attention. Because asphalt is a flammable material, and the ventilation conditions in the tunnel are poor, if a traffic accident causes the asphalt pavement to catch fire, the fire will develop rapidly and people will not be able to evacuate in time, resulting in large casualties, which will inevitably cause unnecessary damage to the safety of life and property. loss. In addition, when ...

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