CN104710803A - Asphalt fire retardant for tunnel pavement - Google Patents
Asphalt fire retardant for tunnel pavement Download PDFInfo
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- CN104710803A CN104710803A CN201510114903.7A CN201510114903A CN104710803A CN 104710803 A CN104710803 A CN 104710803A CN 201510114903 A CN201510114903 A CN 201510114903A CN 104710803 A CN104710803 A CN 104710803A
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Abstract
The invention belongs to the technical field of road material additives and relates to an asphalt fire retardant for a tunnel pavement. The retardant comprises the following ingredients in parts by mass: 5-30 parts of expanded perlite, 5-30 parts of expanded vermiculite, 10-50 parts of expandable graphite, 10-50 parts of nitrogenated fire retardant and 2-10 parts of mineral fiber. Compared with the prior art, the retardant has the following advantages that the retardant is free from halogen and does not generate much smoke or corrosive gas in a combustion process; a low density expansion substance serves as the fire retardant, so that the storage stability of asphalt is improved; the adopted expanded vermiculite, the expanded perlite and the expandable graphite can expand at high temperature; an expansion ratio of the nitrogenated fire retardant can be increased compared with the individual nitrogenated fire retardant, so that the fire retardance is improved; the mineral fire retardant fiber is employed, has a reinforcement effect on an asphalt mixture and can improve the pavement performance in addition to fire retardance; and a preparation method is simple and low in cost and does not require special equipment.
Description
Technical field
The invention belongs to pavement material additive technology field, specifically, relate to the agent of a kind of tunnel road surface asphalt flame-retardant.
Background technology
Along with the enforcement of strategy to develop western regions and Rise of Central Region plan, the motorway of China central and west regions obtains significant progress, and bridge and tunnel occupy an important position in the expressway construction of central and west regions.Asphalt road surface in tunnel, not only contributes to improving road-ability and security, and to reduction noise, effectively avoids visual contrast during access tunnel mouth to have larger improvement result; Therefore, adopting bituminous pavement to carry out mating formation in tunnel is trend of the times.Although tunnel pavement adopts bituminous pavement to have significant advantage.But, pitch is a kind of inflammable material in atmosphere, at high temperature can burn, release a large amount of smog and toxic gas, in addition (spy) long tunnel space relative closure, once presence of fire, poison gas, smog and heat that object inside tunnels and bituminous pavement burning produce are difficult to scatter and disappear, after causing fire failure to occur, personnel escape's difficulty, often causes catastrophic failure, suffers heavy losses.
For these reasons, people be typically employed in pitch add fire retardant way to improve the flame retardant properties of pitch, modifying asphalt, realize the difficult burning of pitch.But current invented asphalt flame-retardant agent is mainly divided into two large classes: the first kind contains the organic fire-retardants such as halogen, and its advantage is that flame retarding efficiency is high, shortcoming can discharge environment and human harmful gas after being burning; Equations of The Second Kind mainly containing aluminium hydroxide, the heavy relatively large inorganics fire retardant of magnesium hydroxide geometric ratio, although this based flame retardant environmental protection, produces without any malicious byproduct during burning, not easily stores because of easy laminated segregation.
Summary of the invention
For solving the problems of the technologies described above, the invention provides and a kind ofly can improve bitumen properties and the tunnel road surface asphalt flame-retardant agent of green non-poisonous environmental protection.
A kind of tunnel road surface asphalt flame-retardant of the present invention agent, described asphalt flame-retardant agent calculates by mass parts, comprises the pearlstone of 5-30 part, the expanded vermiculite of 5-30 part, the expansible black lead of 10-50 part, the nitrogenated flame retardant of 10-50 part, the mineral fibre of 2-10 part.
A kind of tunnel road surface asphalt flame-retardant of the present invention agent, described pearlstone particle diameter is 40-120 order, the expanding volume >=30 times original volume after being heated.
A kind of tunnel road surface asphalt flame-retardant of the present invention agent, the particle diameter of described expanded vermiculite is 40-120 order, the expanding volume >=60 times original volume after being heated.
A kind of tunnel road surface asphalt flame-retardant of the present invention agent, described expansible black lead particle diameter is 40-200 order, the expanding volume >=150 times original volume after being heated.
A kind of tunnel road surface asphalt flame-retardant of the present invention agent, described nitrogenated flame retardant comprises ammonium polyphosphate, tetramethylolmethane and trimeric cyanamide.
A kind of tunnel road surface asphalt flame-retardant of the present invention agent, described mineral fibre length is 0.5-5mm, for Miber III fiber is or/and basalt fibre.
Compared with prior art, a kind of tunnel road surface asphalt flame-retardant of the present invention agent has the following advantages: not halogen-containing, can not produce a large amount of smog and corrosive gases in combustion, has striven for the quality time to rescue and relief work; Abandon the high-density based flame retardants such as oxyhydroxide and adopt low-density expansion class material as fire retardant, bituminous pitch storing stability is increased; The expanded vermiculite adopted, pearlstone, expansible black lead at high temperature volume can expand, and for independent nitrogenated flame retardant, greatly can improve the rate of expansion of nitrogenated flame retardant, thus improve flame retardant resistance; Adopt mineral fire-retardant fibre, not only there is flame-retarding characteristic, also to asphalt mixture, there is reinforced action simultaneously, can pavement performance be improved; Preparation method is simple, and cost is low, does not need specific installation.
Embodiment
Below in conjunction with specific embodiment, tunnel road surface asphalt flame-retardant of the present invention agent is described further, but protection scope of the present invention is not limited to this.
Embodiment 1
A kind of tunnel road surface asphalt flame-retardant agent, described asphalt flame-retardant agent calculates by mass parts, comprises the pearlstone of 13 parts, the expanded vermiculite of 17 parts, the expansible black lead of 35 parts, the nitrogenated flame retardant of 33 parts, the mineral fibre of 2 parts; Described pearlstone particle diameter is 40-60 order, the expanding volume >=30 times original volume after being heated; The particle diameter of described expanded vermiculite is 40-60 order, the expanding volume >=60 times original volume after being heated; Described expansible black lead particle diameter is 40-80 order, the expanding volume >=150 times original volume after being heated; Described nitrogenated flame retardant comprises the trimeric cyanamide of the ammonium polyphosphate of 16 parts, the tetramethylolmethane of 7 parts and 10 parts; Described mineral fibre length is 0.5-1mm, is Miber III fiber.
Asphalt flame-retardant agent is obtained by after above-mentioned raw materials mix and blend.The product getting gained adds in pitch, and addition is 10%, carries out the test of pitch softening point, penetration degree, ductility, dynamic stability and limiting oxygen index(LOI) after stirring.
Embodiment 2
A kind of tunnel road surface asphalt flame-retardant agent, described asphalt flame-retardant agent calculates by mass parts, comprises the pearlstone of 15 parts, the expanded vermiculite of 15 parts, the expansible black lead of 32 parts, the nitrogenated flame retardant of 36 parts, the mineral fibre of 3 parts; Described pearlstone particle diameter is 60-80 order, the expanding volume >=30 times original volume after being heated; The particle diameter of described expanded vermiculite is 60-80 order, the expanding volume >=60 times original volume after being heated; Described expansible black lead particle diameter is 80-120 order, the expanding volume >=150 times original volume after being heated; Described nitrogenated flame retardant comprises the trimeric cyanamide of the ammonium polyphosphate of 18 parts, the tetramethylolmethane of 8 parts and 10 parts; Described mineral fibre length is 1-2mm, is basalt fibre.
Asphalt flame-retardant agent is obtained by after above-mentioned raw materials mix and blend.The product getting gained adds in pitch, and addition is 10%, carries out the test of pitch softening point, penetration degree, ductility, dynamic stability and limiting oxygen index(LOI) after stirring.
Embodiment 3
A kind of tunnel road surface asphalt flame-retardant agent, described asphalt flame-retardant agent calculates by mass parts, comprises the pearlstone of 10 parts, the expanded vermiculite of 20 parts, the expansible black lead of 30 parts, the nitrogenated flame retardant of 38 parts, the mineral fibre of 2 parts; Described pearlstone particle diameter is 80-100 order, the expanding volume >=30 times original volume after being heated; The particle diameter of described expanded vermiculite is 80-100 order, the expanding volume >=60 times original volume after being heated; Described expansible black lead particle diameter is 120-160 order, the expanding volume >=150 times original volume after being heated; Described nitrogenated flame retardant comprises the trimeric cyanamide of the ammonium polyphosphate of 18 parts, the tetramethylolmethane of 8 parts and 12 parts; Described mineral fibre length is 2-3mm, is Miber III fiber.
Asphalt flame-retardant agent is obtained by after above-mentioned raw materials mix and blend.The product getting gained adds in pitch, and addition is 10%, carries out the test of pitch softening point, penetration degree, ductility, dynamic stability and limiting oxygen index(LOI) after stirring.
Embodiment 4
A kind of tunnel road surface asphalt flame-retardant agent, described asphalt flame-retardant agent calculates by mass parts, comprises the pearlstone of 18 parts, the expanded vermiculite of 12 parts, the expansible black lead of 35 parts, the nitrogenated flame retardant of 32 parts, the mineral fibre of 3 parts; Described pearlstone particle diameter is 100-120 order, the expanding volume >=30 times original volume after being heated; The particle diameter of described expanded vermiculite is 100-120 order, the expanding volume >=60 times original volume after being heated; Described expansible black lead particle diameter is 160-200 order, the expanding volume >=150 times original volume after being heated; Described nitrogenated flame retardant comprises the trimeric cyanamide of the ammonium polyphosphate of 15 parts, the tetramethylolmethane of 8 parts and 9 parts; Described mineral fibre length is 4-5mm, is basalt fibre.
Asphalt flame-retardant agent is obtained by after above-mentioned raw materials mix and blend.The product getting gained adds in pitch, and addition is 10%, carries out the test of pitch softening point, penetration degree, ductility, dynamic stability and limiting oxygen index(LOI) after stirring.
Embodiment 5
A kind of tunnel road surface asphalt flame-retardant agent, described asphalt flame-retardant agent calculates by mass parts, comprises the pearlstone of 13 parts, the expanded vermiculite of 17 parts, the expansible black lead of 35 parts, the nitrogenated flame retardant of 33 parts, the mineral fibre of 2 parts; Described pearlstone particle diameter is 40-60 order, the expanding volume >=30 times original volume after being heated; The particle diameter of described expanded vermiculite is 40-60 order, the expanding volume >=60 times original volume after being heated; Described expansible black lead particle diameter is 40-80 order, the expanding volume >=150 times original volume after being heated; Described nitrogenated flame retardant comprises the trimeric cyanamide of the ammonium polyphosphate of 16 parts, the tetramethylolmethane of 7 parts, O-(1-glycerol base)-O-(the 2-choline base) phosphorodithioate (be separated from nigella glandulifera Freyn) of 1 part and 9 parts; Described mineral fibre length is 0.5-1mm, is Miber III fiber.
Asphalt flame-retardant agent is obtained by after above-mentioned raw materials mix and blend.The product getting gained adds in pitch, and addition is 10%, carries out the test of pitch softening point, penetration degree, ductility, dynamic stability and limiting oxygen index(LOI) after stirring.
Embodiment 1-5 medium pitch three norms and Asphalt Mixture Experiment are tested according to " highway engineering pitch and Asphalt Mixture Experiment code " (JTG E20-2011); Judgement criteria is the technical indicator according to regulation in " standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004).The limiting oxygen index(LOI) measuring method of pitch and flame-retardant pitch measures according to " asphalt combustion performance mensuration-oxygen index method " (NB/SH/T 0815-2010) method, and evaluation index is the technical indicator according to regulation in " road road fire-resistant asphalt concrete " (GB/T 29051-2012).The results are shown in mark 1 to show.As can be seen from Table 1, the asphalt flame-retardant agent of invention is when volume is 10%, and the three norms of pitch meets code requirement, combustionproperty exceedes flame-retardant pitch concrete standard, adding simultaneously because of anti-fire-retardant fibre, dynamic stability improves, and Rut resistance is strengthened.
Table 1: the asphalt performance test result of adding and not adding fire retardant described in embodiment 1-5
Compared with prior art, a kind of tunnel road surface asphalt flame-retardant of the present invention agent has the following advantages: not halogen-containing, can not produce a large amount of smog and corrosive gases in combustion, has striven for the quality time to rescue and relief work; Abandon the high-density based flame retardants such as oxyhydroxide and adopt low-density expansion class material as fire retardant, bituminous pitch storing stability is increased; The expanded vermiculite adopted, pearlstone, expansible black lead at high temperature volume can expand, and for independent nitrogenated flame retardant, greatly can improve the rate of expansion of nitrogenated flame retardant, thus improve flame retardant resistance; Adopt mineral fire-retardant fibre, not only there is flame-retarding characteristic, also to asphalt mixture, there is reinforced action simultaneously, can pavement performance be improved; Preparation method is simple, and cost is low, does not need specific installation.
Claims (6)
1. a tunnel road surface asphalt flame-retardant agent, it is characterized in that, described asphalt flame-retardant agent calculates by mass parts, comprises the pearlstone of 5-30 part, the expanded vermiculite of 5-30 part, the expansible black lead of 10-50 part, the nitrogenated flame retardant of 10-50 part, the mineral fibre of 2-10 part.
2. a kind of tunnel road surface asphalt flame-retardant according to claim 1 agent, is characterized in that, described pearlstone particle diameter is 40-120 order, the expanding volume >=30 times original volume after being heated.
3. a kind of tunnel road surface asphalt flame-retardant according to claim 1 agent, is characterized in that, the particle diameter of described expanded vermiculite is 40-120 order, the expanding volume >=60 times original volume after being heated.
4. a kind of tunnel road surface asphalt flame-retardant according to claim 1 agent, is characterized in that, described expansible black lead particle diameter is 40-200 order, the expanding volume >=150 times original volume after being heated.
5. a kind of tunnel road surface asphalt flame-retardant according to claim 1 agent, is characterized in that, described nitrogenated flame retardant comprises ammonium polyphosphate, tetramethylolmethane and trimeric cyanamide.
6. a kind of tunnel road surface asphalt flame-retardant according to claim 1 agent, is characterized in that, described mineral fibre length is 0.5-5mm, for Miber III fiber is or/and basalt fibre.
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| CN201510114903.7A CN104710803B (en) | 2015-03-16 | 2015-03-16 | A kind of asphalt flame-retardant agent of tunnel road surface |
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| CN201510114903.7A CN104710803B (en) | 2015-03-16 | 2015-03-16 | A kind of asphalt flame-retardant agent of tunnel road surface |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181330A (en) * | 2018-10-09 | 2019-01-11 | 山东高速路用新材料技术有限公司 | A kind of road asphalt fire retardant and its preparation method and application |
| CN109810523A (en) * | 2019-01-29 | 2019-05-28 | 刘建军 | Pitch reinforcing agent and its application in modified heavy traffic paving asphalt |
| CN109825098A (en) * | 2019-01-29 | 2019-05-31 | 刘建军 | Modified heavy traffic paving asphalt and preparation method thereof |
| CN110669346A (en) * | 2019-09-29 | 2020-01-10 | 四川科路泰交通科技有限公司 | Asphalt composite flame retardant and application thereof |
| CN115926484A (en) * | 2022-12-14 | 2023-04-07 | 湖北工业大学 | Preparation method of high-viscosity graphite tailing modified asphalt |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062855A (en) * | 2007-04-13 | 2007-10-31 | 东南大学 | Environment-friendly type flame-proof asphalt mastic stone mixture for tunnel |
| CN102173631A (en) * | 2011-02-21 | 2011-09-07 | 山西省交通科学研究院 | Flame retardant for tunnel asphalt pavement |
-
2015
- 2015-03-16 CN CN201510114903.7A patent/CN104710803B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101062855A (en) * | 2007-04-13 | 2007-10-31 | 东南大学 | Environment-friendly type flame-proof asphalt mastic stone mixture for tunnel |
| CN102173631A (en) * | 2011-02-21 | 2011-09-07 | 山西省交通科学研究院 | Flame retardant for tunnel asphalt pavement |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109181330A (en) * | 2018-10-09 | 2019-01-11 | 山东高速路用新材料技术有限公司 | A kind of road asphalt fire retardant and its preparation method and application |
| CN109181330B (en) * | 2018-10-09 | 2021-04-27 | 同济大学 | Asphalt flame retardant for roads and preparation method and application thereof |
| CN109810523A (en) * | 2019-01-29 | 2019-05-28 | 刘建军 | Pitch reinforcing agent and its application in modified heavy traffic paving asphalt |
| CN109825098A (en) * | 2019-01-29 | 2019-05-31 | 刘建军 | Modified heavy traffic paving asphalt and preparation method thereof |
| CN109825098B (en) * | 2019-01-29 | 2021-04-27 | 常德金牛通达沥青有限公司 | Modified heavy traffic asphalt and preparation method thereof |
| CN110669346A (en) * | 2019-09-29 | 2020-01-10 | 四川科路泰交通科技有限公司 | Asphalt composite flame retardant and application thereof |
| CN115926484A (en) * | 2022-12-14 | 2023-04-07 | 湖北工业大学 | Preparation method of high-viscosity graphite tailing modified asphalt |
| CN115926484B (en) * | 2022-12-14 | 2024-02-02 | 湖北工业大学 | Preparation method of high-viscosity graphite tailing modified asphalt |
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| CN104710803B (en) | 2018-01-02 |
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