CN219045073U - Long-life asphalt pavement paving structure provided with AC-5 anti-fatigue layer - Google Patents
Long-life asphalt pavement paving structure provided with AC-5 anti-fatigue layer Download PDFInfo
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- CN219045073U CN219045073U CN202320113171.XU CN202320113171U CN219045073U CN 219045073 U CN219045073 U CN 219045073U CN 202320113171 U CN202320113171 U CN 202320113171U CN 219045073 U CN219045073 U CN 219045073U
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Abstract
The utility model discloses a long-life asphalt pavement paving structure with an AC-5 anti-fatigue layer, which comprises a graded broken stone layer, an AC-5 asphalt concrete anti-fatigue layer, an EME-20 asphalt concrete lower base layer, an EME-20 asphalt concrete upper base layer, an EME-16 asphalt concrete lower paving layer and an SMA-13 asphalt concrete upper paving layer which are paved from bottom to top, wherein penetrating layer oil is sprayed between the graded broken stone layer and the AC-5 asphalt concrete anti-fatigue layer, and other layers are bonded through a PCR modified emulsified asphalt bonding layer. According to the utility model, the AC-5 asphalt concrete anti-fatigue layer is arranged between the graded broken stone layer and the EME-20 asphalt concrete lower base layer, and the self-bonding force and flexibility of the AC-5 asphalt concrete anti-fatigue layer are utilized, so that the overall road performance and anti-fatigue capability of an asphalt pavement structure are improved, the service life of an asphalt pavement is prolonged, the total thickness of the asphalt layer is reduced, and the construction cost of the asphalt pavement is reduced.
Description
Technical Field
The utility model belongs to the technical field of asphalt pavement engineering, and particularly relates to a long-life asphalt pavement paving structure provided with an AC-5 anti-fatigue layer.
Background
At present, the domestic asphalt pavement structure is usually a semi-rigid base asphalt pavement, and although the whole bearing capacity of the pavement is higher, the semi-rigid base asphalt pavement has higher rigidity and poorer anti-scouring capability, so that the reflection crack problem of the semi-rigid base asphalt pavement is outstanding, the design life of the pavement is short, and the maintenance cost is high. In order to prolong the service life of the asphalt pavement, the rigidity of the asphalt concrete layer or the thickness of the asphalt concrete layer can be increased. Compared with a semi-rigid base asphalt pavement, the fully flexible asphalt pavement structure has a thicker asphalt concrete layer, but the asphalt layer bottom has larger bending tensile strain, the asphalt pavement has shorter fatigue life, and meanwhile, the pavement construction cost is obviously increased due to the larger thickness of the asphalt concrete layer.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a long-service-life asphalt pavement structure provided with an AC-5 anti-fatigue layer. According to the paving structure, the AC-5 asphalt concrete anti-fatigue layer is arranged between the graded broken stone layer and the EME-20 asphalt concrete lower base layer, the self binding force of the AC-5 asphalt concrete anti-fatigue layer is utilized to improve the overall road performance of the asphalt pavement paving structure, the AC-5 asphalt concrete has excellent flexibility, the anti-fatigue capability of the asphalt pavement paving structure is improved, and the service life of the asphalt pavement is prolonged.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a set up long-life bituminous paving structure on anti-fatigue layer of AC-5, its characterized in that includes the gradation rubble layer, the anti-fatigue layer of AC-5 bituminous concrete, EME-20 bituminous concrete lower basic unit, EME-20 bituminous concrete upper basic unit, EME-16 bituminous concrete lower pavement layer and SMA-13 bituminous concrete upper pavement layer of laying down from bottom to top, wherein, spill layer oil between the anti-fatigue layer of gradation rubble layer and the AC-5 bituminous concrete, bond through PCR modified emulsified asphalt adhesive layer between anti-fatigue layer of AC-5 bituminous concrete, EME-20 bituminous concrete lower basic unit, EME-20 bituminous concrete upper basic unit, EME-16 bituminous concrete lower pavement layer and the SMA-13 bituminous concrete upper pavement layer respectively.
The long-life asphalt pavement paving structure provided with the AC-5 anti-fatigue layer is characterized in that the components of the upper paving layer of the SMA-13 asphalt concrete are SMA-13 SBS modified asphalt concrete, and the oil-stone ratio of the SMA-13 SBS modified asphalt concrete is 6.2%.
The long-life asphalt pavement paving structure provided with the AC-5 anti-fatigue layer is characterized in that the EME-16 asphalt concrete lower paving layer comprises EME-16 HMB-W high-modulus asphalt concrete, and the oil-stone ratio of the EME-16 HMB-W high-modulus asphalt concrete is 5.9%.
The long-life asphalt pavement paving structure provided with the AC-5 anti-fatigue layer is characterized in that the EME-20 asphalt concrete upper base layer comprises EME-20 HMB-W high-modulus asphalt concrete, and the oil-stone ratio of the EME-20 HMB-W high-modulus asphalt concrete is 5.8%.
The long-life asphalt pavement paving structure provided with the AC-5 anti-fatigue layer is characterized in that the EME-20 asphalt concrete lower base layer comprises EME-20 HMB-W high-modulus asphalt concrete, and the oil-stone ratio of the EME-20 HMB-W high-modulus asphalt concrete is 5.8%.
The long-life asphalt pavement paving structure provided with the AC-5 anti-fatigue layer is characterized in that the AC-5 asphalt concrete anti-fatigue layer comprises AC-5 SBS modified asphalt concrete, and the oil-stone ratio of the AC-5 SBS modified asphalt concrete is 8.3%.
The long-life asphalt pavement paving structure provided with the AC-5 anti-fatigue layer is characterized in that the thickness of the graded broken stone layer is 20cm, the thickness of the AC-5 asphalt concrete anti-fatigue layer is 1.5 cm-2.5 cm, the thickness of the EME-20 asphalt concrete lower base layer is 12cm, the thickness of the EME-20 asphalt concrete upper base layer is 12cm, the thickness of the EME-16 asphalt concrete lower paving layer is 6cm, and the thickness of the SMA-13 asphalt concrete upper paving layer is 4cm.
Compared with the prior art, the utility model has the following advantages:
1. according to the utility model, the AC-5 asphalt concrete anti-fatigue layer is arranged between the graded broken stone layer and the EME-20 asphalt concrete lower base layer, a good bonding effect is formed by utilizing the self bonding force of the AC-5 asphalt concrete anti-fatigue layer and the graded broken stone layer at the lower part, the overall road performance of the asphalt pavement structure is improved, meanwhile, the anti-fatigue capability of the asphalt pavement structure is improved by utilizing the excellent flexibility of the AC-5 asphalt concrete, and the service life of the asphalt pavement is prolonged.
2. According to the utility model, the high-modulus asphalt concrete is adopted as the base layer and the lower pavement layer in the asphalt pavement structure, so that the total thickness of the asphalt layer is effectively reduced by utilizing the good load transmission capability and excellent service performance of the asphalt pavement structure, the construction cost of the asphalt pavement is obviously reduced, the consumption of natural resources such as aggregate, asphalt and the like is greatly reduced, and the ecological and environmental protection is facilitated.
3. The thickness of the AC-5 asphalt concrete anti-fatigue layer in the asphalt pavement structure is 1.5 cm-2.5 cm, and the thickness condition meets the requirement of the standard on the minimum thickness of the AC-5 asphalt mixture pavement layer, so that the integral anti-fatigue capability of the asphalt pavement structure is improved, the service life of the asphalt pavement is prolonged, meanwhile, aggregate and asphalt resources are saved, and the ecological environment problem caused by natural resource exploitation is reduced.
The technical scheme of the utility model is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic structural view of a long-life asphalt pavement structure provided with an AC-5 anti-fatigue layer according to the present utility model.
Reference numerals illustrate:
1-an SMA-13 asphalt concrete upper pavement layer; 2-EME-16 asphalt concrete lower pavement layer;
3-EME-20 asphalt concrete upper base layer; 4-EME-20 asphalt concrete lower base layer;
5-AC-5 asphalt concrete anti-fatigue layer; 6-graded crushed stone layer.
Detailed Description
Example 1
As shown in fig. 1, the long-life asphalt pavement paving structure with the AC-5 anti-fatigue layer of the embodiment comprises a graded broken stone layer 6, an AC-5 asphalt concrete anti-fatigue layer 5, an EME-20 asphalt concrete lower base layer 4, an EME-20 asphalt concrete upper base layer 3, an EME-16 asphalt concrete lower paving layer 2 and an SMA-13 asphalt concrete upper paving layer 1 which are paved from bottom to top, wherein penetrating layer oil is sprayed between the graded broken stone layer 6 and the AC-5 asphalt concrete anti-fatigue layer 5, the EME-20 asphalt concrete lower base layer 4, the EME-20 asphalt concrete upper base layer 3, the EME-16 asphalt concrete lower paving layer 2 and the SMA-13 asphalt concrete upper paving layer 1 are respectively bonded through a PCR modified emulsified asphalt adhesive layer.
In the embodiment, the AC-5 asphalt concrete anti-fatigue layer 5 is arranged between the graded broken stone layer 6 in the asphalt pavement structure and the EME-20 asphalt concrete lower base layer 4, and the bonding force of the AC-5 asphalt concrete anti-fatigue layer and the graded broken stone layer 6 at the lower part are utilized to form a good bonding effect, so that the overall road performance of the asphalt pavement structure is improved, meanwhile, the AC-5 asphalt concrete has higher oil-stone ratio and excellent flexibility, the anti-fatigue capability of the asphalt pavement structure is improved, road diseases are limited on the surface layer, and the service life of the asphalt pavement is prolonged. In addition, in the embodiment, through sprinkling penetrating layer oil between the graded broken stone layer 6 and the AC-5 asphalt concrete anti-fatigue layer 5 to enhance the bonding performance of the graded broken stone layer 6 and the AC-5 asphalt concrete anti-fatigue layer, through adopting PCR modified emulsified asphalt bonding layers for bonding between other layers, the bonding performance between the layers is improved, thereby improving the bonding strength between the layers of an asphalt pavement structure, and further being beneficial to prolonging the service life of the asphalt pavement.
Further, in this embodiment, the SMA-13 asphalt concrete upper pavement layer 1 comprises SMA-13 type SBS modified asphalt concrete, and the oil-stone ratio of the SMA-13 type SBS modified asphalt concrete is 6.2%. The SMA-13 type SBS modified asphalt concrete with the oil-stone ratio has excellent high-temperature performance, low-temperature performance, water stability and anti-skid performance, and ensures that the SMA-13 type SBS modified asphalt concrete meets the performance requirements of a functional layer on the surface of an asphalt pavement.
Further, in this embodiment, the component of the EME-16 asphalt concrete lower pavement layer 2 is EME-16 HMB-W high modulus asphalt concrete, and the oil-stone ratio of the EME-16 HMB-W high modulus asphalt concrete is 5.9%. The EME-16 type high-modulus asphalt concrete with the oil-stone ratio has excellent high-temperature performance, low-temperature performance and water stability, and ensures that the EME-16 asphalt concrete meets the performance requirements of a pavement layer in an asphalt pavement.
Further, the component of the EME-20 asphalt concrete upper base layer 3 in this embodiment is EME-20 HMB-W high modulus asphalt concrete, and the oil-stone ratio of the EME-20 HMB-W high modulus asphalt concrete is 5.8%.
Further, the component of the EME-20 asphalt concrete lower base layer 4 in this embodiment is EME-20 HMB-W high modulus asphalt concrete, and the oil-stone ratio of the EME-20 HMB-W high modulus asphalt concrete is 5.8%.
The EME-20 type high-modulus asphalt concrete with the oil-stone ratio has excellent high-temperature performance, low-temperature performance, water stability and fatigue resistance, and ensures that the EME-20 asphalt concrete meets the performance requirements of an asphalt pavement base layer.
Further, in this embodiment, the component of the AC-5 asphalt concrete anti-fatigue layer 5 is AC-5 SBS modified asphalt concrete, and the oil-stone ratio of the AC-5 SBS modified asphalt concrete is 8.3%. The AC-5 type SBS modified asphalt concrete with higher oil-stone ratio has excellent flexibility, further improves the overall road performance and fatigue resistance of an asphalt pavement structure, prolongs the service life of the asphalt pavement, saves aggregate and asphalt resources, and reduces the ecological environment problem caused by natural resource exploitation.
Further, in this embodiment, the thickness of the graded crushed stone layer 6 is 20cm, the thickness of the AC-5 asphalt concrete anti-fatigue layer 5 is 1.5cm to 2.5cm, the thickness of the EME-20 asphalt concrete lower base layer 4 is 12cm, the thickness of the EME-20 asphalt concrete upper base layer 3 is 12cm, the thickness of the EME-16 asphalt concrete lower pavement layer 2 is 6cm, and the thickness of the SMA-13 asphalt concrete upper pavement layer 1 is 4cm. The thickness of each layer in the pavement structure meets the current standard requirements, is favorable for controlling the total thickness of the thinned asphalt layer, particularly the AC-5 asphalt concrete anti-fatigue layer 5 with the thickness meets the minimum thickness requirement of the standard on the AC-5 asphalt mixture pavement layer, not only improves the integral anti-fatigue capability of the asphalt pavement structure, realizes the prolongation of the service life of the asphalt pavement, but also saves aggregate and asphalt resources and reduces the ecological environment problem caused by natural resource exploitation.
The paving process of the long-life asphalt pavement paving structure provided with the AC-5 anti-fatigue layer comprises the following steps: according to the requirements of asphalt pavement construction technical specifications, firstly paving graded broken stone to form a graded broken stone layer 6, cleaning the surface of the graded broken stone layer 6 until floating dust is free, and spraying penetrating oil, wherein the penetrating oil is usually of a road type cationic emulsified asphalt PC-2 type, and the spraying amount is 1.1kg/m 2 And placing for 4-6 hours; then mixing the AC-5 asphalt concrete mixture and transporting to the site, spreading on the surface of the graded broken stone layer 6 and rolling to form an AC-5 asphalt concrete anti-fatigue layer 5; SBR emulsified asphalt according to 0.2kg/m 2 ～0.4kg/m 2 Spraying the sprayed amount of the modified emulsified asphalt to the surface of the AC-5 asphalt concrete anti-fatigue layer 5 and standing for 4-6 hours to form an SBR modified emulsified asphalt adhesive layer; mixing EME-20 asphalt concrete mixture and transporting to the site, spreading the mixture on the surface of the AC-5 asphalt concrete anti-fatigue layer 5 in two layers to form an EME-20 asphalt concrete lower base layer 4 and an EME-20 asphalt concrete upper base layer 3, and bonding the EME-20 asphalt concrete lower base layer 4 and the EME-20 asphalt concrete upper base layer 3 through an SBR modified emulsified asphalt bonding layer; SBR emulsified asphalt according to 0.2kg/m 2 ～0.4kg/m 2 Spraying the mixture on EME-20 on the surface of the upper base layer 3 of asphalt concrete and placing for 4-6 h to form an SBR modified emulsified asphalt adhesive layer, then spreading and rolling the mixed EME-16 asphalt concrete mixture on the surface of the SBR modified emulsified asphalt adhesive layer to form a lower paving layer 2 of EME-16 asphalt concrete, and continuously spreading the SBR emulsified asphalt according to the weight of 0.2kg/m 2 ～0.4kg/m 2 Spraying the spraying amount of (2) on the surface of the EME-16 asphalt concrete lower pavement layer, standing for 4-6 hours to form an SBR modified emulsified asphalt adhesive layer, and finally paving and rolling the well-mixed SMA-13 asphalt concrete mixture on the surface of the SBR modified emulsified asphalt adhesive layer to form an SMA-13 asphalt concrete upper pavement layer 1; the rolling process in the paving process refers to the conventional rolling process of SBS modified asphalt concrete.
The above description is only of the preferred embodiments of the present utility model, and is not intended to limit the present utility model. Any simple modification, variation and equivalent variation of the above embodiments according to the technical substance of the utility model still fall within the scope of the technical solution of the utility model.
Claims (2)
1. The utility model provides a set up long-life bituminous paving structure on anti-fatigue layer of AC-5, its characterized in that includes the grading rubble layer (6) that lays from bottom to top, AC-5 bituminous concrete anti-fatigue layer (5), EME-20 bituminous concrete lower basic unit (4), EME-20 bituminous concrete upper basic unit (3), EME-16 bituminous concrete lower pavement layer (2) and SMA-13 bituminous concrete upper pavement layer (1), wherein, spill layer oil between grading rubble layer (6) and AC-5 bituminous concrete anti-fatigue layer (5), EME-20 bituminous concrete lower basic unit (4), EME-20 bituminous concrete upper basic unit (3), EME-16 bituminous concrete lower pavement layer (2) and SMA-13 bituminous concrete upper pavement layer (1) are respectively through PCR modified emulsified asphalt adhesive layer bonding.
2. The long-life asphalt pavement paving structure provided with the AC-5 anti-fatigue layer according to claim 1, wherein the thickness of the graded crushed stone layer (6) is 20cm, the thickness of the AC-5 asphalt concrete anti-fatigue layer (5) is 1.5 cm-2.5 cm, the thickness of the EME-20 asphalt concrete lower base layer (4) is 12cm, the thickness of the EME-20 asphalt concrete upper base layer (3) is 12cm, the thickness of the EME-16 asphalt concrete lower paving layer (2) is 6cm, and the thickness of the SMA-13 asphalt concrete upper paving layer (1) is 4cm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320113171.XU CN219045073U (en) | 2023-01-18 | 2023-01-18 | Long-life asphalt pavement paving structure provided with AC-5 anti-fatigue layer |
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| CN202320113171.XU CN219045073U (en) | 2023-01-18 | 2023-01-18 | Long-life asphalt pavement paving structure provided with AC-5 anti-fatigue layer |
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