CN111304992A - Coiled material type adhesive layer and preparation and construction methods thereof - Google Patents
Coiled material type adhesive layer and preparation and construction methods thereof Download PDFInfo
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- CN111304992A CN111304992A CN202010147549.9A CN202010147549A CN111304992A CN 111304992 A CN111304992 A CN 111304992A CN 202010147549 A CN202010147549 A CN 202010147549A CN 111304992 A CN111304992 A CN 111304992A
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- 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
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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Abstract
The invention discloses an asphalt pavement, which comprises an asphalt base layer and an asphalt surface layer, wherein coiled material type binding materials are filled between the asphalt base layer and the asphalt surface layer as well as between the asphalt surface layers to bind the surface layers. The binding material is prepared from matrix asphalt or modified asphalt, can be directly paved during asphalt pavement construction, and then is heated to melt and bind various layers by virtue of a hot-mixed asphalt mixture on the upper layer of the construction. The asphalt pavement has the advantages of uniform and stable bonding of all layers, long service life of the pavement structure, convenient construction and short construction period.
Description
Technical Field
The invention relates to a building material for asphalt pavement construction, which is applied to asphalt pavement construction of roads, bridges and tunnels.
Background
The asphalt pavement has the characteristics of good flatness, no joint, convenience for maintenance and repair and the like, and occupies an irreplaceable position in the road field of China. The construction quality of the asphalt pavement is the premise of ensuring the expected service life of the asphalt pavement. The general asphalt pavement is mainly divided into an asphalt base course and an asphalt surface course, wherein the asphalt base course requires enough compressive strength and is generally constructed by materials such as broken stone, gravel, lime soil or various industrial waste residues. The asphalt overlay is selected based on the desired pavement properties and results, typically one or more of the hot mix asphalt mixes, including two-layer and three-layer.
In order to prevent the asphalt pavement base layer and the surface layer from slipping, the surface layer slips, and bonding oil is sprayed between the asphalt pavement base layer and the surface layer and between the asphalt pavement base layer and the surface layer. Because the materials of the asphalt base layer and the asphalt surface layer are different, currently, the base layer and the surface layer are bonded by using permeable layer oil, and the surface layer are bonded by using adhesive layer oil. And secondly, the sticky layer oil is also used in the following cases, if the asphalt layer below the double-layer or three-layer hot-mix hot-laid asphalt mixture pavement is polluted before the upper layer is laid, or the asphalt layer is additionally laid on the old asphalt pavement or the cement concrete pavement, or the side surfaces of a curb, a rainwater inlet and an inspection well which are in contact with the newly laid asphalt mixture.
Most of the current penetrating oil is sprayed with liquid petroleum asphalt, emulsified asphalt and kerosene asphalt, and the viscous layer oil is sprayed with emulsified asphalt or modified emulsified asphalt, so that the good bonding effect between an asphalt base layer and a surface layer is not caused due to uneven spraying in the construction process of the penetrating oil and the viscous layer oil, and the service life of a pavement structure is shortened. And when the emulsified asphalt is used as the permeable stratum oil or the viscous stratum oil, the construction may be affected by weather, the demulsification is not timely, the construction period is prolonged, and economic loss is caused. And the curing time is required to be 24 hours after the penetrating layer oil is sprayed, so that unnecessary time cost is increased.
Patent CN107338874A discloses an asphalt coiled material, which is mainly used for building walls, roofs, tunnels, highways, and landfill sites, and the coiled material mainly comprises the work of resisting external rainwater and groundwater infiltration, and the asphalt coiled material mainly solves the problem of water resistance. Patent CN104210170A discloses a self-adhesive asphalt waterproof coiled material, which is mainly exposed on the roof to solve the problem of water and fire prevention. The existing asphalt coiled material mainly solves the problems of water resistance, moisture resistance and fire resistance in a way of a finished product with a complex structure, and does not play a role in bonding pavements and other building constructions.
Disclosure of Invention
In view of the above, an object of the present invention is to provide an asphalt pavement, wherein a coiled material type adhesive layer is filled between each layer of the asphalt pavement to achieve a bonding effect, the asphalt pavement is convenient to construct, the bonding effect is uniform, and the pavement structure has a long service life.
In order to achieve the purpose, the technical scheme of the invention is as follows:
bituminous paving generally divide into bilayer formula and three laminar according to the surface course, bilayer formula surface course structure bituminous paving, its characterized in that, including the coiled material formula adhesive layer that asphalt base layer, surface course lower floor and surface course upper strata and asphalt base layer and surface course lower floor were filled, the coiled material formula adhesive layer that surface course lower floor and surface course upper strata were filled, coiled material formula adhesive layer is formed by the viscous material preparation that can liquefy by being heated.
Further, three laminar surface course structures, bituminous paving's surface course lower floor and surface course upper strata between still have the surface course middle level, surface course lower floor and surface course middle level have coiled material formula adhesive layer, there is coiled material formula adhesive layer between surface course middle level and the surface course upper strata.
Further, the viscous material liquefiable by heat includes one or more of base asphalt, rubber modified asphalt, SBS modified asphalt, SBR modified asphalt and high viscosity modified asphalt. The base asphalt is generally divided into bitumen and tar asphalt, and the bitumen is divided into lake asphalt, rock asphalt and seabed asphalt, namely natural asphalt and petroleum asphalt; the tar pitch is classified into coal pitch and wood pitch. The high-viscosity modified asphalt is prepared by adding a high-viscosity modifier into base asphalt.
Further, the thickness of the coiled material type adhesive layer is 1.5-4mm, the width is 5-8 m, and the lap joint length is more than or equal to 20 cm.
The second purpose of the invention is to provide a construction method of the asphalt pavement, which has short construction period and simple construction method.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the construction method comprises the following steps:
after the construction of the lower layer of the construction layer A is finished, rolling;
b, laying a coiled material type adhesive layer on the upper layer;
c, laying and rolling the upper layer of the upper construction layer, and finishing construction.
Further, the construction layer lower layer in the step A comprises one or more of an asphalt base layer, a surface layer lower layer and a surface layer middle layer. Further, the lower layer of the construction layer in the step A also comprises one or more of a polluted asphalt layer, an old asphalt road and a cement concrete road. The coiled material type adhesive layer not only plays a role in bonding in the construction of a common asphalt pavement structure, but also can be used for bonding by additionally paving an asphalt layer on the renovation of an asphalt pavement or a cement concrete pavement or paving an asphalt layer on a polluted asphalt surface layer again.
And C, further, the upper layer of the construction layer in the step C is a hot-mixed asphalt mixture, the hot-mixed asphalt mixture is used as the upper layer of the construction layer, and the coiled material type bonding layer is melted in the construction process, so that the lower construction layer and the upper construction layer are bonded.
Further, between the step B and the step C, after the construction of the step B is completed, the step C is preferably implemented immediately without the need of curing time.
The invention also aims to provide a preparation method of the coiled adhesive layer, which has the advantages of easy obtainment of the needed base material, simple and easy operation and contribution to industrial production.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the preparation method of the coiled adhesive layer comprises the following steps:
a, determining the using amount of a viscous material according to the specification of the coiled viscous layer;
b, heating the viscous material with the determined dosage to be in a liquid state to obtain a liquid viscous material;
and C, spraying, cooling, compacting and sealing the obtained liquid viscous material to obtain the coiled viscous layer.
Further, the method for determining the dosage of the viscous material from the coil type adhesive layer specification comprises the following steps: 1) determining the volume of the bonding material of 1m2 according to the thickness of the coiled material; 2) 1M was calculated from p ═ M/V, p being the density of the binder used, V the volume of the binder2The amount of the required bonding material used; 3) the total amount of adhesive material used is determined by the size of the roll adhesive layer.
Further, the specification in the step A comprises the material, thickness, width and overlapping length of the roll type adhesive layer. And C, the processes of spraying, cooling, compacting and roll sealing in the step C are completed by a whole set of asphalt coil equipment.
The invention has the beneficial effects that:
(1) the invention provides an asphalt pavement, each layer of the asphalt pavement structure is filled with coiled material type adhesive layer for bonding, the bonding is uniform and stable, the service life of the pavement structure is long, the maintenance time is not needed, and the construction period is short.
(2) The coiled material type adhesive layer between each layer of the asphalt pavement realizes the bonding effect after the coiled material type adhesive layer is heated and melted by the hot-mixed asphalt mixture on the upper layer of the asphalt construction layer.
(3) The coiled material type adhesive layer provided by the invention has low requirements on base materials, low manufacturing cost, obvious adhesive effect and simple preparation process, and is beneficial to industrial production.
Drawings
FIG. 1 is a schematic view of a double-faced asphalt pavement
FIG. 2 is a schematic view of a three-layer surface asphalt pavement structure
FIG. 3 is a schematic view of a construction structure for renovating an old asphalt pavement
Detailed Description
The examples are given for the purpose of better illustration of the invention, but the invention is not limited to the examples. Therefore, those skilled in the art should make insubstantial modifications and adaptations to the embodiments of the present invention in light of the above teachings and remain within the scope of the invention.
EXAMPLE 1 double-faced asphalt pavement construction
SBS modified asphalt coiled material formula adhesive layer, specification: thickness of 0.8mm, width of 8m, no overlap joint, and asphalt consumption of 0.6kg/m2。
SBR modified asphalt coiled material type adhesive layer, specification: thickness of 1mm, width of 12m, lap length of 30cm, and asphalt consumption of 0.9kg/m2。
Referring to fig. 1,1 is an asphalt base layer, 512 is an SBS modified asphalt coiled material type adhesive layer, 2 is a surface layer lower layer, 523 is an SBR modified asphalt coiled material type adhesive layer, and 3 is a surface layer upper layer, and the specific implementation steps are as follows:
(1) after the construction of the asphalt base layer 1 is finished, rolling and cleaning are carried out, so that no dust and sundries exist, an asphalt interlayer is removed, and sundries such as stones and the like do not exist on the section;
(2) then laying an SBS modified asphalt coiled material type adhesive layer 512;
(3) paving and rolling the lower layer 2 of the surface layer, and cleaning;
(4) paving an SBR modified asphalt coiled material type adhesive layer 523;
(5) and then paving and rolling the upper layer 3 of the surface layer, and finishing construction.
Example 2 construction of three-layer surface asphalt pavement
SBS modified asphalt coiled material formula adhesive layer, specification: thickness of 0.8mm, width of 8m, no overlap joint, and asphalt consumption of 0.6kg/m2。
SBR modified asphalt coiled material formula adhesive layer, coiled material formula adhesive layer specification: thickness of 1mm, width of 12m, lap length of 30cm, and asphalt consumption of 0.9kg/m2。
Referring to fig. 1 and 2, the difference between the three-layer surface layer and the two-layer surface layer lies in that there are more layer middle layers between the layer lower layer and the layer upper layer, referring to fig. 2, 1 is an asphalt base layer, 512 is an SBS modified asphalt coiled material type adhesive layer, 2 is a layer lower layer, 524 is an SBR modified asphalt coiled material type adhesive layer, 4 is a layer middle layer, 543 is an SBR modified asphalt coiled material type adhesive layer, and 3 is a layer upper layer.
The implementation steps are as follows:
(1) after the construction of the asphalt base layer 1 is finished, rolling and cleaning are carried out, so that no dust and sundries exist, an asphalt interlayer is removed, and sundries such as stones and the like do not exist on the section;
(2) then laying an SBS modified asphalt coiled material type adhesive layer 512;
(3) paving and rolling the lower layer 2 of the surface layer, and cleaning;
(4) paving an SBR modified asphalt coiled material type adhesive layer 524;
(5) paving a surface layer middle layer 4, rolling and cleaning;
(6) laying and paving an SBR modified asphalt coiled material type bonding layer 543;
(7) and then paving and rolling the upper layer 3 of the surface layer, and finishing construction.
Example 3 construction of New asphalt pavement for old asphalt pavement
Coil-type adhesive layer: SBR modified asphalt coiled material type adhesive layer
Specification of coiled material type adhesive layer: thickness of 1mm, width of 12m, lap length of 30cm, and asphalt consumption of 0.9kg/m2。
Referring to fig. 3,6 is an old asphalt pavement, 567 is an SBR modified asphalt coiled material type adhesive layer, and 7 is a newly laid asphalt layer. The specific implementation steps are as follows:
(1) cleaning the old asphalt pavement 6 to ensure that no dust or sundries exist, removing an asphalt interlayer and ensuring that no sundries such as stones exist on the section;
(2) then paving an SBR modified asphalt coiled material type adhesive layer 567;
(3) laying and rolling a new asphalt layer 7, and finishing construction.
Example 4 SBS modified asphalt coil type adhesive layer preparation
(1) Determining the specification of the coiled material type adhesive layer: thickness of 0.8mm, width of 8m, no overlap joint, and asphalt consumption of 0.6kg/m2；
(2) Liquefying quantitative SBS modified asphalt according to the amount of asphalt;
(3) spraying, cooling, compacting and sealing the liquefied SBS modified asphalt to obtain an SBS modified asphalt coiled material type adhesive layer;
EXAMPLE 5 SBR-modified asphalt coil type tack coat preparation
(1) Determining the specification of the coiled material type adhesive layer: thickness of 1mm, width of 12m, lap length of 30cm, and asphalt consumption of 0.9kg/m2；
(2) Liquefying quantitative SBR modified asphalt according to the using amount of the asphalt;
(3) spraying, cooling, compacting and sealing the liquefied SBR modified asphalt to obtain an SBR modified asphalt coiled material type adhesive layer;
finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. Bituminous paving, its characterized in that, including the coiled material formula viscous layer that bituminous base layer, surface course lower floor and surface course upper strata and bituminous base layer and surface course lower floor were filled, the coiled material formula viscous layer that surface course lower floor and surface course upper strata were filled, coiled material formula viscous layer is formed by the preparation of the viscous material that can liquefy by being heated.
2. The asphalt pavement according to claim 1, wherein a surface middle layer is further disposed between the surface lower layer and the surface upper layer, a coil adhesive layer is filled between the surface lower layer and the surface middle layer, and a coil adhesive layer is filled between the surface middle layer and the surface upper layer.
3. The asphalt pavement according to claim 1 or 2, wherein the viscous material liquefiable by heat comprises one or more of base asphalt, rubber modified asphalt, SBS modified asphalt, SBR modified asphalt and high viscosity modified asphalt.
4. The asphalt pavement according to claim 1 or 2, wherein the coil-type bond coat has a thickness of 1.5-4 mm.
5. The method of constructing an asphalt pavement according to any one of claims 1 to 4, comprising the steps of:
after the construction of the lower layer of the construction layer A is finished, rolling;
b, laying a coiled material type adhesive layer on the upper layer;
c, laying and rolling the upper layer of the upper construction layer, and finishing construction.
6. The construction method according to claim 5, wherein the construction layer lower layer in the step A comprises one or more of an asphalt base layer, a surface layer lower layer and a surface layer middle layer.
7. The construction method according to claim 5, wherein the lower construction layer in the step A further comprises one or more of a polluted asphalt layer, an old asphalt road and a cement concrete road.
8. The construction method according to claim 5, wherein the upper layer of the construction layer in the step C is a hot-mix asphalt mixture.
9. The construction method according to claim 5, wherein between the step B and the step C, the step C is performed immediately after the step B is completed.
10. A method for preparing a coil adhesive layer according to any one of claims 1 to 4, comprising the steps of:
a, determining the using amount of a viscous material according to the specification of the coiled viscous layer;
b, heating the viscous material with the determined dosage to be in a liquid state to obtain a liquid viscous material;
c, spraying, cooling, compacting and sealing and rolling the obtained liquid viscous material to obtain a coiled material type adhesive layer;
the method for determining the using amount of the viscous material according to the specification of the coiled viscous layer in the step A comprises the following steps: 1) determination of 1m from the thickness of the coil2The volume of bonding material of (a); 2) from p ═ M/V, p being the density of the binder used, V the volume of the binder, 1M was calculated2The amount of the required bonding material used; 3) the total amount of adhesive material used is determined by the size of the roll adhesive layer.
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| CN202010147549.9A CN111304992A (en) | 2020-03-05 | 2020-03-05 | Coiled material type adhesive layer and preparation and construction methods thereof |
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| CN202010147549.9A CN111304992A (en) | 2020-03-05 | 2020-03-05 | Coiled material type adhesive layer and preparation and construction methods thereof |
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| CN105985656A (en) * | 2015-02-13 | 2016-10-05 | 上海龙孚材料技术有限公司 | Aqueous epoxy resin modified emulsified asphalt, and preparation method and application thereof |
| CN108797257A (en) * | 2017-05-04 | 2018-11-13 | 镇江港和新型建材有限公司 | A kind of public affairs service asphalt concrete |
| CN209482144U (en) * | 2019-01-23 | 2019-10-11 | 山西省交通科学研究院有限公司 | A kind of anti-radiation slit formation cold-regenerated road surface structure layer suitable for heavy traffic |
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2020
- 2020-03-05 CN CN202010147549.9A patent/CN111304992A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105985656A (en) * | 2015-02-13 | 2016-10-05 | 上海龙孚材料技术有限公司 | Aqueous epoxy resin modified emulsified asphalt, and preparation method and application thereof |
| CN108797257A (en) * | 2017-05-04 | 2018-11-13 | 镇江港和新型建材有限公司 | A kind of public affairs service asphalt concrete |
| CN209482144U (en) * | 2019-01-23 | 2019-10-11 | 山西省交通科学研究院有限公司 | A kind of anti-radiation slit formation cold-regenerated road surface structure layer suitable for heavy traffic |
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| 毛笑笑等: ""地毯式铺装路面施工技术及其发展趋势"", 《西部交通科技》 * |
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