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A kind of flame retardant asphalt mixture and preparation method thereof

A technology of asphalt mixture and mixture, which is applied in the field of pavement asphalt materials, can solve the problems of accelerating asphalt pavement damage, etc., and achieve the effects of strengthening bonding ability, good anti-rutting ability, and increasing adhesion

Active Publication Date: 2020-11-24
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, due to frequent vehicle braking, slow vehicle speed, and strict canalized traffic in the tunnel, the asphalt pavement will suffer greater damage. Therefore, increasing the amount of flame retardant will undoubtedly accelerate the destruction of the asphalt pavement.

Method used

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  • A kind of flame retardant asphalt mixture and preparation method thereof
  • A kind of flame retardant asphalt mixture and preparation method thereof
  • A kind of flame retardant asphalt mixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Weigh 15.86 parts by mass of 6mm polyimide fiber, 280 parts by mass of base asphalt, 880 parts by mass of diabase with particle size ≤ 4mm, 294 parts by mass of diabase with particle size ≤ 7mm, and 294 parts by mass with diabase with particle size ≤ 7mm, and diabase with particle size ≤ 7mm 1468 parts by mass of diabase of ≤11mm, 1957 parts by mass of diabase of 11mm

[0052] Heat the base asphalt until the temperature reaches 160°C, slowly add rubber powder, and stir while heating. The rubber powder is added in three times on average, and the rubber powder is added in the previous time and stirred evenly before adding. The whole process of adding rubber powder takes about 5 minutes. Complete; after adding rubber powder, continue heating and stirring at 185°C for about 1.2h; then add diabase and weighed fibers together in the mixing pot and stir for 90s, and finally add miner...

Embodiment 2

[0054] Weigh 15.94 parts by mass of 3mm polyimide fiber, 310 parts by mass of base asphalt, 893 parts by mass of diabase with particle size ≤ 4mm, 298 parts by mass of diabase with particle size ≤ 7mm, and 298 parts by mass of diabase with particle size ≤ 7mm, and diabase with particle size ≤ 7mm 1489 parts by mass of diabase of ≤11mm, 1985 parts by mass of diabase of 11mm

[0055] The preparation steps are the same as in Example 1, and a flame-retardant asphalt mixture is prepared.

Embodiment 3

[0066] Weigh 11 parts by mass of 6mm polyimide fiber, 270 parts by mass of base asphalt, 860 parts by mass of diabase with a particle size of ≤4mm, 290 parts by mass of diabase with a particle size of 4mm

[0067] Heat the base asphalt until the temperature reaches 160°C, slowly add rubber powder, and stir while heating. The rubber powder is added in three times on average, and the rubber powder is added in the previous time and stirred evenly before adding. The whole process of adding rubber powder takes about 5 minutes. Complete; after adding rubber powder, continue heating and stirring at 180°C for about 1.5 hours; then add diabase and weighed fibers together in the mixing pot and stir for 90 seconds, and finall...

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Abstract

The invention relates to a flame-retardation asphalt mixture and a preparation method thereof. The flame-retardation asphalt mixture comprises the following components in parts by mass: 270-320 partsof matrix asphalt, 11-17 parts of polyimide fiber, 4435-4815 parts of aggregates, 285-310 parts of ore powder, and rubber powder accounting for 20% of mass of the matrix asphalt. The method is characterized in that the matrix asphalt is preheated, the rubber powder is added to obtain the rubber asphalt, the aggregates and the polyimide fiber are added and uniformly mixed, and the ore powder is added. The steps are simple, the prepared asphalt mixture has high flame retardation efficacy, can obviously reduced the combustibility of the asphalt in flame, has good flame retardancy and self-extinguishing character, and can improve the performance of the asphalt mixture for roads.

Description

technical field [0001] The invention belongs to the technical field of pavement asphalt materials, and in particular relates to a flame-retardant asphalt mixture and a preparation method thereof. Background technique [0002] In recent years, the main battlefield of expressway construction has gradually shifted from plains to mountainous areas, and the proportion of road tunnels is also increasing. Asphalt pavement has the advantages of high flatness, low noise, no joints, and good mechanical properties. It is widely used as a pavement material, but asphalt is a flammable material, and the space in the tunnel is narrow and the ventilation is not smooth. Once a fire breaks out, it is difficult to control the fire, and it will produce a large amount of harmful gas. In severe cases, it may even cause casualties and property loss. Therefore, the tunnel pavement requires asphalt materials to have good road performance, good flame retardancy, and low harmful gas emissions. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B111/28
CPCC04B26/26C04B2111/00724C04B2111/0075C04B2111/28C04B16/0691C04B14/041C04B18/141C04B18/22
Inventor 申爱琴吴寒松蒙洁
Owner CHANGAN UNIV
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