A flame-retardant heat-insulating asphalt concrete and its preparation method

An asphalt concrete and asphalt technology, which is applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of less research on pavement materials and technologies in tunnels, and poor improvement in the flame retardant performance of asphalt concrete. , mass casualties and property losses, etc., to achieve the effect of reducing hydrophilicity, low price and low production cost

Active Publication Date: 2015-10-21
王朝辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tunnel construction technology has achieved comprehensive development, but research on pavement materials and technology in tunnels is still relatively small
Although asphalt pavement has the advantages of comfortable driving, low noise, good skid resistance, and easy maintenance, but because asphalt is a flammable material, a fire on the asphalt pavement of a tunnel will often cause greater casualties and property losses
Nowadays, road flame retardants are mainly used to improve the flame retardant performance of asphalt pavement. There are many kinds of road flame retardants, which can be divided into two categories: organic flame retardants and inorganic flame retardants. Although organic flame retardants can To a certain extent, it plays the role of flame retardant and smoke suppression, but at the same time, it also has the disadvantages of high toxicity of decomposition products and large smoke; and the commonly used inorganic flame retardants have poor effect on improving the flame retardant performance of asphalt concrete.

Method used

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  • A flame-retardant heat-insulating asphalt concrete and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The environment-friendly flame-retardant asphalt in this embodiment is made of the following raw materials in mass percentage: mineral aggregate 94.8%, asphalt 5.04%, rectorite 0.15%, coupling agent 0.01%; the sum of raw material mass percentage is 100%; the coupling The agent solution is prepared by mixing the silane coupling agent and the solvent at a mass ratio of 1:3, and the solvent is ethanol.

[0026] Said parts by weight can be weight measurement units such as gram, liang, jin, kilogram, ton.

[0027] The preparation method of the environment-friendly flame-retardant asphalt of the present embodiment comprises the following steps:

[0028] Step 1, drying, pulverizing and sieving rectorite to obtain rectorite powder;

[0029] Step 2, adding the crushed and sieved rectorite powder into the coupling agent solution to stir, and then placing it in a drying oven to dry the rectorite powder;

[0030] Step 3: Heat the asphalt to 140°C and add it to the mineral materia...

Embodiment 2

[0032] The environment-friendly flame-retardant asphalt of this embodiment is made of the following raw materials in parts by weight: 94.2% of ore material, 4.27% of asphalt, 1.51% of rectorite, and 0.02% of coupling agent; the coupling agent solution is composed of silane coupling agent and solvent It is prepared by mixing at a mass ratio of 1:4, and the solvent is ethanol. Said parts by weight can be weight measurement units such as gram, liang, jin, kilogram, ton.

[0033] The preparation method of the environment-friendly flame-retardant asphalt of the present embodiment comprises the following steps:

[0034] Step 1, drying, pulverizing and sieving rectorite to obtain rectorite powder;

[0035] Step 2, adding the crushed and sieved rectorite powder into the coupling agent solution to stir, and then placing it in a drying oven to dry the rectorite powder;

[0036] Step 3: After heating the asphalt to 150°C, add it to the mineral material at 190°C and mix for 90 seconds, ...

Embodiment 3

[0038] The environment-friendly flame-retardant asphalt of this embodiment is made of the following raw materials in parts by weight: mineral aggregate 92.3%, asphalt 5.26%, rectorite 2.4%, coupling agent 0.04%; the coupling agent solution is composed of silane coupling agent and solvent It is made by mixing at a mass ratio of 1:5, and the solvent is ethanol.

[0039] The parts by mass can be weight measurement units such as gram, liang, jin, kilogram, ton.

[0040] The preparation method of the environment-friendly flame-retardant asphalt of the present embodiment comprises the following steps:

[0041] Step 1, drying, pulverizing and sieving rectorite to obtain rectorite powder;

[0042] Step 2, adding the crushed and sieved rectorite powder into the coupling agent solution to stir, and then placing it in a drying oven to dry the rectorite powder;

[0043] Step 3: Heat the asphalt to 160°C and add it to the mineral material at 200°C and mix for 90 seconds, then add rectori...

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Abstract

The invention provides flame-retardant heat insulation bituminous concrete and a preparation method thereof. The flame-retardant heat insulation bituminous concrete is prepared from the following raw materials in percentage by mass: 90-95 percent of mineral aggregate, 3-6 percent of bitumen, 0.1-5 percent of rectorite and 0.01-0.1 percent of coupling agent, wherein a coupling agent solution is prepared by mixing a silane coupling agent and a solvent according to a mass ratio of 1:3-6; the solvent is ethanol; the sum of the mass percentage of the raw materials is 100 percent. The invention also provides the preparation method of the flame-retardant heat insulation bituminous concrete. The flame-retardant heat insulation bituminous concrete has the obvious advantages of flame retardance, smoke suppression, simple preparation method, low production cost and the like, the flame retardant property of the bituminous mixture can be obviously improved, and the safety performance of bituminous pavement of tunnel can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of road materials, and in particular relates to a flame-retardant and heat-insulating asphalt concrete and a preparation method thereof. Background technique [0002] With the rapid development of domestic highways, more and more highway tunnels are built. Tunnel construction technology has achieved comprehensive development, but the research on pavement materials and technology in tunnels is still relatively little. Although asphalt pavement has the advantages of comfortable driving, low noise, good skid resistance, and easy maintenance, but because asphalt is a flammable material, a fire on the asphalt pavement of a tunnel will often cause greater casualties and property losses. Nowadays, road flame retardants are mainly used to improve the flame retardant performance of asphalt pavement. There are many kinds of road flame retardants, which can be divided into two categories: organic flame retardants and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B26/26C04B18/12
CPCY02W30/91
Inventor 王朝辉孙晓龙郭滕滕高志伟冯炜王新岐李彦伟
Owner 王朝辉
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