CN114775359B - Pavement seal layer structure and construction method thereof - Google Patents
Pavement seal layer structure and construction method thereof Download PDFInfo
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- CN114775359B CN114775359B CN202210474438.8A CN202210474438A CN114775359B CN 114775359 B CN114775359 B CN 114775359B CN 202210474438 A CN202210474438 A CN 202210474438A CN 114775359 B CN114775359 B CN 114775359B
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- 239000002245 particle Substances 0.000 claims abstract description 95
- 239000004575 stone Substances 0.000 claims abstract description 61
- 239000002699 waste material Substances 0.000 claims abstract description 18
- 238000004381 surface treatment Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 239000010426 asphalt Substances 0.000 claims description 72
- 239000002131 composite material Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 11
- 125000002091 cationic group Chemical group 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 230000009467 reduction Effects 0.000 abstract description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000035939 shock Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 235000019738 Limestone Nutrition 0.000 description 21
- 239000006028 limestone Substances 0.000 description 21
- 239000010410 layer Substances 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 10
- 238000005054 agglomeration Methods 0.000 description 8
- 230000002776 aggregation Effects 0.000 description 8
- 230000014759 maintenance of location Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000011246 composite particle Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000007480 spreading Effects 0.000 description 4
- 238000003892 spreading Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
- E01C7/358—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with a combination of two or more binders according to groups E01C7/351 - E01C7/356
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention belongs to the field of road engineering, and particularly relates to a pavement sealing layer structure and a construction method thereof. The pavement seal layer structure adopts the rubber particles subjected to surface treatment to replace part of stone as aggregate, so that the original effect of the pavement seal layer can be ensured while the consumption of waste rubber is greatly increased, the rubber performance can be furthest exerted, and the shock absorption and noise reduction capabilities of the pavement are improved. The construction method of the invention does not need large construction equipment, has the characteristics of low construction cost and convenient construction, and has remarkable economic and social benefits.
Description
Technical Field
The invention belongs to the field of road engineering, and particularly relates to a noise-reduction resource-friendly pavement sealing layer structure based on reutilization of waste rubber tires and a construction method thereof.
Background
The broken stone sealing layer of the road pavement is mainly composed of asphalt binder and aggregate embedded above the binder, and is widely applied to countries or regions such as the United states, canada, australia, south Africa, europe and the like.
At present, hundreds of millions of waste rubber tires are produced each year worldwide, and because the waste rubber tires are difficult to compress and contain heavy metals such as lead, chromium, cadmium and the like, the waste rubber tires occupy a large amount of land space resources and are not easy to biodegrade, and a large amount of toxic gases are released after the waste rubber tires are combusted, so that serious pollution is caused to air, water sources, soil and the like, and the recycling of the waste rubber tires is enhanced. In the crushed stone seal road surface structure disclosed in the prior art, rubber powder is generally used as an asphalt modifier for preparing a rubber modified asphalt binder, so that the shock absorption and noise reduction capability and the rutting resistance capability of the crushed stone seal road surface are improved. However, the rubber powder is used as an asphalt modifier, and the following defects still exist: the mixing amount is small, and the recycling efficiency of the waste tires is low; (2) The high damping characteristics, waterproofness and low thermal conductivity of rubber are not utilized and exerted to the greatest extent. Therefore, development of a novel-structure chip seal layer is very necessary, the recycling efficiency of waste rubber can be improved, and the performance of the rubber can be exerted to the greatest extent.
Disclosure of Invention
In view of the above, the technical problem to be solved by the invention is that the existing crushed stone seal layer has low utilization efficiency of the mixing amount and performance of waste rubber, and further provides a pavement seal layer structure which can not only improve the using amount of the waste rubber, but also exert the rubber performance to the greatest extent. According to the modified emulsified asphalt pavement aggregate structure, rubber particles are used for replacing part of stone to serve as a part of a skeleton structure, so that the consumption of waste rubber is greatly increased, and on the other hand, the problem of insufficient adhesion strength between the modified emulsified asphalt and untreated rubber particles in the demulsification process is effectively solved, the retention rate of the whole pavement aggregate, water damage resistance, shock absorption and noise reduction capacity are improved, and the performance of the rubber is furthest exerted.
The invention aims at realizing the following technical scheme:
in a first aspect, the present invention provides a surface treatment method of rubber particles, comprising the steps of:
preheating rubber particles to be treated at 100-120 ℃;
Weighing asphalt by taking the mass of crushed stones with the same volume as the rubber particles to be treated as a reference, wherein the mass ratio of the asphalt to the crushed stones is 0.01-0.015, and preheating the asphalt at 130-165 ℃ until the asphalt reaches a liquid flowing state;
Mixing the preheated rubber particles to be treated with the asphalt, stirring for 90-120 s, and cooling.
Alternatively, the particle size of the individual rubber particles to be treated is 4.75mm to 7.1mm.
Optionally, the rubber particles to be treated are formed by granulating waste rubber serving as a raw material by a normal temperature method, namely, rubber particles formed by cutting waste rubber tires under normal temperature conditions.
Optionally, the preheating time of the rubber particles to be treated is 1-2 hours.
Optionally, the crushed stone is alkaline stone, and the particle size of each crushed stone is 4.75-7.1 mm.
In a second aspect, the present invention provides a composite rubber particle produced by the surface treatment method of the rubber particle of the present invention.
In a third aspect, the invention provides a pavement seal structure, which comprises an asphalt bonding layer and aggregate embedded on the surface of the asphalt bonding layer, wherein the aggregate is crushed stone and composite rubber particles.
Optionally, the volume ratio of the composite rubber particles to the crushed stone is 1: (1-3).
Optionally, the composite rubber particles are uniformly distributed on the surface of the asphalt bonding layer.
Optionally, the aggregate has an average thickness of no more than 10mm.
In a fourth aspect, the present invention provides a construction method of the pavement seal layer structure, which includes the following steps:
uniformly mixing the composite rubber particles with crushed stone to form aggregate, synchronously paving the aggregate and emulsified asphalt on a pavement, and rolling and flattening.
Optionally, the emulsified asphalt is modified cationic emulsified asphalt, and the sprinkling amount of the emulsified asphalt is unit mass when asphalt residues climb to the height of 60-70% of the average particle size of the aggregate after demulsification.
Optionally, the spreading amount of the mixture is determined according to the stone amount in annex B of the technical Specification for synchronous chip seal construction (DB 61/T914-2014).
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. according to the surface treatment method for the rubber particles, provided by the embodiment of the invention, the surface roughness of the rubber particles is sufficiently considered to be smaller than that of stone, electrons are not carried on the surface in a normal state, the capillary action and the electrostatic action are weaker, and if broken stone is directly replaced as a pavement seal structure skeleton, the durability is poor due to insufficient adhesiveness with asphalt, so that a proper amount of asphalt is adopted to carry out surface treatment on the rubber particles in advance, so that the adhesive strength between the rubber particles and an asphalt binder in the pavement seal structure is improved, the retention rate of pavement seal aggregate is improved, the service life of a pavement is prolonged, meanwhile, the surface treated rubber particles cannot have adverse effect on the overall construction depth of the pavement seal, and the pavement is excellent in skid resistance.
2. According to the pavement sealing structure provided by the embodiment of the invention, the rubber particles subjected to surface treatment are adopted to replace part of stone to serve as a part of a pavement sealing framework, so that the consumption of waste rubber is greatly improved, the consumption of natural stone resources is reduced, the engineering cost is obviously reduced, the pavement sealing structure can be used for maintenance of high-grade pavement and can also be used as a low-grade pavement surface layer structure, and the pavement sealing structure has the characteristics of simple structure and convenience in construction, and has obvious economic and social benefits. On the other hand, compared with pavement seal aggregate made of stone materials, the rubber particles are softer in texture and higher in damping property, and radial vibration and stick-slip vibration can be reduced to the greatest extent when the rubber particles are in direct contact with pavement tires, so that noise generated by pavement driving is effectively reduced, and noise pollution of the pavement is reduced while the driving comfort is improved. Therefore, the invention not only can improve the consumption of waste rubber and reduce the consumption of natural stone resources, but also can ensure the original efficacy of the pavement sealing layer, can exert the performance of the rubber to the greatest extent, and improves the shock absorption and noise reduction capability of the pavement.
3. The construction method of the pavement seal structure provided by the embodiment of the invention only needs to uniformly mix the composite rubber particles and the broken stone and then synchronously lay the composite rubber particles and the broken stone on the pavement with emulsified asphalt, and the pavement seal structure is rolled and leveled, and large-scale construction equipment is not needed, so that the construction method has the characteristics of low construction cost and convenience in construction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a pavement seal structure provided by the invention.
Wherein reference numerals are as follows:
1-composite rubber particles, 2-broken stone, 3-emulsified asphalt bonding layers and 4-existing pavement structures.
Detailed Description
The following examples are provided for a better understanding of the present invention and are not limited to the preferred embodiments described herein, but are not intended to limit the scope of the invention, any product which is the same or similar to the present invention, whether in light of the present teachings or in combination with other prior art features, falls within the scope of the present invention.
The specific experimental procedures or conditions are not noted in the examples and may be followed by the operations or conditions of conventional experimental procedures described in the literature in this field. The reagents or apparatus used were conventional reagent products commercially available without the manufacturer's knowledge.
As shown in fig. 1, the invention provides a pavement seal layer structure which is paved on the surface of an existing pavement structure 4, wherein the pavement seal layer structure is of a single-layer structure and comprises an emulsified asphalt bonding layer 3 and aggregate uniformly embedded on the surface of the emulsified asphalt bonding layer, the aggregate is broken stone 2 and composite rubber particles 1, and the volume ratio of the broken stone 2 to the composite rubber particles 1 is (1-3): 1, wherein the average thickness of the aggregate is not more than 10mm.
Wherein, the composite rubber particles are formed by surface treatment of rubber particles, and the specific method comprises the following steps:
granulating waste rubber tires serving as raw materials by a normal temperature method to obtain rubber particles with the particle size of 4.75-7.1 mm, and preheating the rubber particles in a baking oven with the temperature of 100-120 ℃ for 1-2h;
Weighing asphalt by taking the mass of alkaline stones with equal volumes of rubber particles as a reference, wherein the mass ratio of the asphalt to the alkaline stones is 0.01-0.015, and placing the asphalt in an oven with the temperature of 130-165 ℃ for preheating until the asphalt reaches a liquid flowing state;
Preheating the mixing pot to 130-165 ℃, adding the preheated rubber particles to be treated and the asphalt, stirring for 90-120 s, and cooling to obtain the asphalt.
The invention also provides a construction method of the pavement seal layer structure, which comprises the following steps:
uniformly mixing the composite rubber particles with crushed stone to form aggregate, synchronously paving the aggregate and the modified cationic emulsified asphalt on a pavement, and grinding to be smooth. The spreading amount of the mixture is determined according to the stone amount in annex B of the technical Specification for synchronous chip seal construction (DB 61/T914-2014), and can be 7.91kg/m 2, and the spreading amount of the modified cationic emulsified asphalt is the unit mass when asphalt residues climb to the height of 60-70% of the average particle size of the aggregate after demulsification, and can be 2.23kg/m 2.
The asphalt type used for preparing the composite rubber particles can be the same as or different from the asphalt type used in the pavement seal structure.
In order to observe the asphalt coating condition on the surface of the rubber particles, limestone with the same particle size is adopted to replace the rubber particles with the particle size of 4.75-7.1 mm for surface treatment.
Experimental example 1
Firstly, cleaning limestone stones, and putting the limestone stones into a baking oven at 100-120 ℃ for preheating;
Taking the mass of limestone stones as a reference, weighing asphalt accounting for 1.0% of the mass of the limestone stones, and placing the asphalt into a baking oven at 130-165 ℃ for preheating until the flowing state of liquid is achieved;
Preheating the mixing pot to 130-165 ℃, then adding the limestone stones and asphalt which are preheated, and stirring for 90s; and then taken out for cooling.
Experimental example 2
The procedure of experimental example 1 was repeated except for the following.
The amount of asphalt was 1.5% of the mass of limestone stones.
Experimental example 3
The procedure of experimental example 1 was repeated except for the following.
The amount of asphalt was 0.5% of the mass of limestone stones.
Experimental example 4
The procedure of experimental example 1 was repeated except for the following.
The amount of asphalt was 2.0% of the mass of limestone stones.
Experimental examples 1-4 were observed for the asphalt coating condition and the agglomeration fluidity condition on the limestone surface after cooling, and the results are shown in Table 1:
TABLE 1
| Project | Wrapping condition | Agglomeration and fluidity |
| Experimental example 1 | Bare drain | No agglomeration and good fluidity |
| Experimental example 2 | Bare drain | No agglomeration and good fluidity |
| Experimental example 3 | The bare drain area is larger | No agglomeration and good fluidity |
| Experimental example 4 | Bare drain | Partial agglomeration and poor flowability |
As can be seen from table 1, when the amount of asphalt is 1.0% and 1.5% of the stone mass, the stone surface is free of bare leakage and agglomeration; when the asphalt consumption is 0.5% of the stone mass, no agglomeration exists, the fluidity is good, but a large exposed area exists; when the asphalt consumption is 2.0% of the stone mass, the stone is not exposed, but is partially agglomerated, and the fluidity is poor. Therefore, it is preferable to use 1.0 to 1.5% of the mass of the stone material having the same particle size as the coating pitch for the rubber particles and to surface-treat the rubber particles.
Example 1
A surface treatment method of rubber particles, comprising the steps of:
Firstly cleaning rubber particles with the particle size of 4.75-7.1 mm, and putting the rubber particles into a baking oven with the temperature of 100-120 ℃ for preheating for 1-2 h;
Taking the mass of limestone with equal volume of rubber particles as a reference, weighing asphalt accounting for 1.0% of the mass of the limestone, and placing the asphalt into a baking oven at 130-165 ℃ for preheating until the liquid flowing state is achieved;
preheating the mixing pot to 130-165 ℃, then adding the preheated rubber particles and asphalt, and stirring for 90s; and then taking out the rubber composite particles after cooling the rubber composite particles to obtain the composite rubber particles.
Example 2
A surface treatment method of rubber particles, comprising the steps of:
Firstly cleaning rubber particles with the particle size of 4.75-7.1 mm, and putting the rubber particles into a baking oven with the temperature of 100-120 ℃ for preheating for 1-2 h;
Taking the mass of limestone with equal volume of rubber particles as a reference, weighing cationic SBR modified emulsified asphalt accounting for 1.5% of the mass of the limestone, and placing the emulsified asphalt into a baking oven at 130-165 ℃ for preheating;
Preheating a mixing pot to 130-165 ℃, then adding the preheated rubber particles and the cationic SBR modified emulsified asphalt, and stirring for 90s; and then taking out the rubber composite particles after cooling the rubber composite particles to obtain the composite rubber particles.
Example 3
Clean and dry limestone with the particle size of 4.75-7.1 mm and the composite rubber particles prepared in the example 2 are prepared, and a chip seal test piece is manufactured on asphalt felt. Uniformly spraying a layer of cationic SBR modified emulsified asphalt according to the using amount of asphalt of 2.23kg/m 2, weighing limestone stones with corresponding mass according to the using amount of aggregate of 7.91kg/m 2, replacing 25% of the limestone stones by using composite rubber particles according to the principle of equal volume, uniformly spreading the aggregate (limestone and composite rubber particles) in the modified emulsified asphalt, then rolling and flattening by using a steel wheel to ensure that the aggregate is fully contacted with the cationic SBR modified emulsified asphalt, then putting the mixture into a baking oven at 50 ℃ to be baked to constant weight, taking out a test piece, and cooling and curing for 24 hours at normal temperature.
Example 4
The procedure of example 3 was repeated except for the following.
The composite rubber particles were used to replace 50% by volume of limestone stones.
Comparative example 1
The procedure of example 3 was repeated except for the following.
The pre-coating surface treatment of the rubber particles is canceled.
Comparative example 2
The procedure of example 3 was repeated except for the following.
The composite rubber particles were used to replace 75% by volume of the limestone stones.
Comparative example 3
The procedure of example 3 was repeated except for the following.
The aggregate is composed of limestone and contains no rubber particles.
Aggregate fall-off rate, road noise, and skid resistance were evaluated for examples 3 and 4 and comparative examples 1 and 2. Wherein the anti-slip performance evaluation refers to a manual sanding method and a pendulum friction meter method in the on-site test procedure of highway subgrade and pavement (JTG 3450-2019); the aggregate shedding rate is measured through a small acceleration loading test, the grounding pressure of a test tire is 0.7MPa, the loading frequency is 7200 times/hour, and meanwhile, the road noise during driving simulation is measured by a decibel meter in the test process. The results are shown in Table 2 below:
TABLE 2
As can be seen from examples 3,4 and comparative example 2 in table 2, when the composite rubber particles replace stone by no more than 50%, the aggregate retention rate is better under the conditions of low temperature, normal temperature, high temperature and water immersion, and the construction depth is correspondingly increased with the increase of the replacement ratio of the composite rubber particles, and the surface treatment process of the rubber particles has no obvious adverse effect on the anti-skid performance compared with comparative example 1; as is clear from example 3 and comparative example 1, when untreated rubber particles are used for the chipped seal layer to replace part of stone, the overall aggregate falling rate is greatly increased, and the aggregate falling rate is also increased under the conditions of low temperature and high temperature; as is clear from examples 4 and comparative example 2, when the rubber particle replacement ratio is increased to 75%, the depth of the structure is slightly increased, but the aggregate retention rate of the aggregate of the whole aggregate of the crushed stone seal layer under the conditions of high temperature, normal temperature, low temperature and water immersion is greatly reduced; as is clear from examples 3 and 4 and comparative examples 1 and 2, the soaking time has less influence on the retention rate of the aggregate, and has better water damage resistance. As is clear from examples 3,4 and comparative examples 1 to 3, the noise was greatly reduced as the substitution ratio of the rubber particles was increased.
In summary, the surface treatment of the rubber particles can improve the retention rate of the aggregate of the waste rubber crushed stone seal, and when the replacement proportion of the rubber particles is not more than 50%, the aggregate of the crushed stone seal and the asphalt binder have stronger binding force, excellent anti-skid performance, water damage resistance and pavement noise reduction capability at different temperatures.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (7)
1. The pavement seal layer structure comprises an asphalt bonding layer and aggregate embedded on the surface of the asphalt bonding layer, and is characterized in that the aggregate is broken stone and composite rubber particles; the volume ratio of the composite rubber particles to the crushed stone is 1: (1-3); the composite rubber particles are prepared by a surface treatment method of the rubber particles;
The surface treatment method of the rubber particles comprises the following steps:
preheating rubber particles to be treated at 100-120 ℃;
Weighing asphalt by taking the mass of crushed stones with the same volume as the rubber particles to be treated as a reference, wherein the mass ratio of the asphalt to the crushed stones is 0.01-0.015, and preheating the asphalt at 130-165 ℃ until the asphalt reaches a liquid flowing state;
Mixing the preheated rubber particles to be treated with the asphalt, stirring for 90-120 s, and cooling.
2. A pavement seal structure according to claim 1, wherein the individual rubber particles to be treated have a particle size of 4.75mm to 7.1mm; and/or the number of the groups of groups,
The rubber particles to be treated are prepared by granulating waste rubber serving as a raw material by a normal temperature method.
3. A pavement sealing structure according to claim 1 or 2, wherein said crushed stone is alkaline stone and the particle size of the crushed stone alone is 4.75mm to 7.1mm.
4. The pavement seal structure of claim 1 wherein said composite rubber particles are uniformly distributed on the surface of said asphalt binder layer.
5. The pavement seal structure of claim 1 wherein the aggregate has an average thickness of no more than 10mm.
6. A method of constructing a pavement seal structure as claimed in any one of claims 1 to 5, comprising the steps of:
uniformly mixing the composite rubber particles with crushed stone to form aggregate, synchronously paving the aggregate and emulsified asphalt on a pavement, and rolling and flattening.
7. The construction method according to claim 6, wherein the emulsified asphalt is modified cationic emulsified asphalt, and the sprinkling amount is a unit mass when asphalt residues climb to a height of 60-70% of the average particle size of the aggregate after demulsification.
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| WO2003031723A1 (en) * | 2001-10-05 | 2003-04-17 | Acoustic Control Ab | A road surfacing for reducing rolling noise |
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| FR2580658B1 (en) * | 1985-04-22 | 1987-06-05 | Beugnet Sa | COATING COMPOSITION BASED ON BITUMEN AND RECOVERY RUBBER POWDER |
| JP3059566B2 (en) * | 1992-02-14 | 2000-07-04 | 大林道路株式会社 | Paving method |
| JPH09241516A (en) * | 1996-03-12 | 1997-09-16 | Toagosei Co Ltd | Improver for adhesion between hardened asphalt and rubber particle |
| JP4121622B2 (en) * | 1998-07-07 | 2008-07-23 | 大林道路株式会社 | Pavement construction method |
| AU2003903954A0 (en) * | 2003-07-30 | 2003-08-14 | Pollard Bros Pty Limited | Asphalt surface treatment |
| JP4502834B2 (en) * | 2005-02-01 | 2010-07-14 | 株式会社Ｎｉｐｐｏ | Construction method of asphalt pavement with improved noise reduction |
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| GB0910956D0 (en) * | 2009-06-25 | 2009-08-05 | Brilliant Idea Ltd | Water management system |
| CN102704366A (en) * | 2012-02-01 | 2012-10-03 | 华南理工大学 | High-performance rubberized asphalt composite seal coat and construction method thereof |
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| CN212656063U (en) * | 2020-05-06 | 2021-03-05 | 北京中地交科新材料技术研究有限公司 | Road surface joint tape with waterproof, anti-skid, high-toughness and anti-cracking performances |
| CN114349457B (en) * | 2022-01-25 | 2022-12-20 | 浙江鼎峰科技股份有限公司 | Rubber particle modified sound insulation mortar for building and preparation method thereof |
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| JPH10140510A (en) * | 1996-11-08 | 1998-05-26 | Obayashi Road Corp | High-functional asphalt paving method and high-functional asphalt paving structure |
| WO2003031723A1 (en) * | 2001-10-05 | 2003-04-17 | Acoustic Control Ab | A road surfacing for reducing rolling noise |
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