Construction method of anti-icing asphalt pavement
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-29
- Publication Date
- 2026-08-11
AI Technical Summary
[0004]为此,本发明提供一种防冰沥青路面的施工方法,用以克服现有技术中由于对防冰沥青路面的最大压缩厚度反映出的防冰沥青路面的压实有效性的判定不准确导致施工有效性的降低的问题
[0024]与现有技术相比,本发明的有益效果在于,本发明所述施工方法通过在进行施工试验时对根据路面平均抗压强度对防冰路面施工的准确性进行判定,由于在施工过程中施工设备的放料口堵塞或防冰沥青料温度降低发生粘结导致部分路面施工平整度降低,以至于沥青路面整体抗压效果的下降,通过增大铺设设备的放料速度,克服施工设备的放料口堵塞对施工的影响和增大放料冲击力减小堵塞程度,进一步实现了防冰沥青路面的施工的质量和效率的提高。
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Figure CN117569139B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of road construction technology, and in particular to a construction method for anti-icing asphalt pavement. Background Technology
[0002] Asphalt pavement refers to various types of pavement constructed by incorporating road asphalt materials into mineral materials. Asphalt binders improve the ability of paving aggregates to resist damage to the pavement from traffic and natural factors, resulting in a smooth, dust-free, impermeable, and durable pavement.
[0003] Chinese Patent Publication No. CN114635324A discloses an asphalt pavement and its construction method, including a base layer, a waterproof layer, a drainage layer, a reinforcing layer, and a pavement layer. The pavement layer includes an asphalt layer and a concrete layer from top to bottom. Multiple first reinforcing mechanisms are spaced longitudinally within the concrete layer, and any two adjacent first reinforcing mechanisms are connected by multiple second reinforcing mechanisms spaced laterally. The multiple first and second reinforcing mechanisms divide the concrete layer into multiple non-contacting unit blocks arranged in a matrix. It can be seen that the asphalt pavement and its construction method have the following problems: the inaccurate determination of the compaction effectiveness of the anti-icing asphalt pavement, which is reflected by the maximum compressibility thickness of the anti-icing asphalt pavement, leads to a reduction in construction effectiveness. Summary of the Invention
[0004] Therefore, the present invention provides a construction method for anti-icing asphalt pavement to overcome the problem in the prior art where the determination of the compaction effectiveness of anti-icing asphalt pavement, which is reflected by the maximum compressibility thickness of the anti-icing asphalt pavement, is inaccurate, leading to a reduction in construction effectiveness.
[0005] To achieve the above objectives, the present invention provides a construction method for anti-icing asphalt pavement, comprising: step S1, cleaning the ground surface and setting up asphalt formwork on both sides of the pavement, using paving equipment to lay anti-icing asphalt material on the cleaned pavement, and compacting the anti-icing asphalt material to complete the pavement compressive strength test; step S2, determining the material release speed of the paving equipment when the accuracy of the anti-icing pavement construction is lower than the allowable range based on the average compressive strength of the pavement, or initially determining that the compaction effectiveness of the anti-icing asphalt pavement is lower than the allowable range, and obtaining the maximum compressible thickness of the anti-icing asphalt pavement; step S3, adjusting the speed of the compaction motor when the compaction effectiveness of the anti-icing asphalt pavement is lower than the allowable range based on the maximum compressible thickness of the anti-icing asphalt pavement, or adjusting the tilt angle of the compaction terminal according to the average pressure of the formwork on both sides of the pavement.
[0006] Furthermore, the process for determining the accuracy of the anti-icing pavement construction includes determining that if the average compressive strength of the pavement is less than or equal to a preset second compressive strength, the accuracy of the anti-icing pavement construction is below the allowable range.
[0007] If the average compressive strength of the road surface only meets the preset first strength condition, the material feeding speed of the paving equipment will be adjusted.
[0008] If the average compressive strength of the pavement only meets the preset second strength condition, it is initially determined that the compaction effectiveness of the anti-icing asphalt pavement is below the allowable range, and the compaction effectiveness of the anti-icing asphalt pavement is further determined based on the maximum compressible thickness of the anti-icing asphalt pavement.
[0009] Furthermore, the preset first strength condition is that the average compressive strength of the road surface is less than or equal to the preset first compressive strength; the preset second strength condition is that the average compressive strength of the road surface is greater than the preset first compressive strength and less than or equal to the preset second compressive strength; the preset first compressive strength is less than the preset second compressive strength.
[0010] Furthermore, the process of adjusting the material feeding speed of the paving equipment is as follows: the material feeding speed of the paving equipment is increased according to the difference between the preset first compressive strength and the average compressive strength of the road surface.
[0011] Furthermore, the secondary determination process for the compaction effectiveness of the aforementioned anti-icing asphalt pavement includes,
[0012] The compressibility thickness of the anti-icing asphalt pavement was tested several times within a unit period to screen out the maximum compressibility thickness of the anti-icing asphalt pavement.
[0013] If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset first thickness condition or the preset second thickness condition, the compaction effectiveness of the anti-icing asphalt pavement is determined to be below the allowable range in the second determination.
[0014] If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset first thickness condition, the speed of the compaction motor is adjusted.
[0015] If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset second thickness condition, it is initially determined that the effectiveness of the compressive force transmission is below the allowable range, and the effectiveness of the compressive force transmission is further determined based on the average pressure of the formwork on both sides of the pavement.
[0016] Furthermore, the preset first thickness condition is that the maximum compressible thickness of the anti-icing asphalt pavement is less than the preset first compressible thickness; the preset second thickness condition is that the maximum compressible thickness of the anti-icing asphalt pavement is greater than the preset first compressible thickness and less than the preset second compressible thickness; the preset first compressible thickness is less than the preset second compressible thickness.
[0017] Furthermore, the rotational speed of the compaction motor is determined by the difference between the preset first compression thickness and the maximum compression thickness of the anti-icing asphalt pavement.
[0018] Furthermore, the process of making a secondary determination on the effectiveness of the compaction force transmission includes: if the average pressure of the formwork on both sides of the road surface is less than the preset pressure, the secondary determination of the effectiveness of the compaction force transmission is lower than the allowable range, and the tilt angle of the compaction terminal is adjusted.
[0019] Furthermore, the tilt angle of the compaction terminal is determined by the difference between the preset pressure and the average pressure of the formwork on both sides of the road surface.
[0020] Furthermore, the compaction terminal includes:
[0021] A control lever, which is connected to the compaction motor, is used to transmit the output power of the compaction motor;
[0022] Find a flat plate, which is connected to the control rod, to compact the anti-icing asphalt material on the road surface;
[0023] An electric knob, which is connected to the control lever and the leveling plate respectively, is used to adjust the tilt angle of the leveling plate.
[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the construction method of the present invention determines the accuracy of the anti-icing pavement construction based on the average compressive strength of the pavement during construction tests. Since the smoothness of some pavement is reduced due to blockage of the discharge port of the construction equipment or adhesion caused by the temperature drop of the anti-icing asphalt material during construction, the overall compressive strength of the asphalt pavement is reduced. By increasing the discharge speed of the paving equipment, the impact of blockage of the discharge port of the construction equipment on construction is overcome, and the impact force of the discharge is increased to reduce the degree of blockage, thereby further improving the quality and efficiency of anti-icing asphalt pavement construction.
[0025] During the trial construction of the construction method described in this invention, the compaction effectiveness of the anti-icing asphalt pavement is determined based on its maximum compressible thickness. A certain distance exists between the compaction motor and the compaction terminal. Due to the instability of the internal structure of the compaction equipment, the output power of the compaction motor is lost during transmission, making it insufficient to support normal compaction operations at the compaction terminal. This results in a smaller maximum compressible thickness, reduced density, and decreased compressive strength of the anti-icing asphalt pavement. By reducing the speed of the compaction motor, the stability of the internal structure of the compaction equipment is increased, further improving the quality and efficiency of the anti-icing asphalt pavement construction.
[0026] During the trial construction, the construction method described in this invention adjusts the inclination angle of the compaction terminal according to the average pressure of the formwork on both sides of the road surface. By increasing the inclination angle of the compaction terminal, the pressure of the compaction terminal on the anti-icing asphalt material on the road surface is increased, thereby reducing the density of the anti-icing asphalt pavement and increasing its compressive strength, thus further improving the quality and efficiency of the construction of anti-icing asphalt pavement. Attached Figure Description
[0027] Figure 1 This is an overall flowchart of the construction method for anti-icing asphalt pavement according to an embodiment of the present invention;
[0028] Figure 2 This is a flowchart illustrating step S2 of the construction method for anti-icing asphalt pavement according to an embodiment of the present invention.
[0029] Figure 3 This is a flowchart illustrating step S3 of the construction method for anti-icing asphalt pavement according to an embodiment of the present invention.
[0030] Figure 4 This is a schematic diagram of the connection structure between the compaction terminal and the paving equipment in the construction method of anti-icing asphalt pavement according to an embodiment of the present invention.
[0031] Explanation of reference numerals in the attached diagram: 1-Laying equipment; 2-Compactor motor; 3-Control lever; 4-Electric knob; 5-Finding plate. Detailed Implementation
[0032] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.
[0033] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.
[0034] Please see Figure 1 , Figure 2 , Figure 3 as well as Figure 4 The diagrams shown are, respectively, an overall flowchart of the construction method for anti-icing asphalt pavement according to an embodiment of the present invention, a detailed flowchart of step S2, a detailed flowchart of step S3, and a schematic diagram of the connection structure between the compaction terminal and the paving equipment. The present invention provides a construction method for anti-icing asphalt pavement, comprising:
[0035] Step S1: Clean the ground surface and set up asphalt formwork on both sides of the road. Use paving equipment to lay anti-icing asphalt material on the cleaned road surface and compact the anti-icing asphalt material to complete the road compressive strength test.
[0036] Step S2: If the accuracy of the anti-icing pavement construction is lower than the allowable range based on the average compressive strength of the pavement, determine the material release speed of the paving equipment; or, preliminarily determine that the compaction effectiveness of the anti-icing asphalt pavement is lower than the allowable range, and obtain the maximum compressive thickness of the anti-icing asphalt pavement.
[0037] Step S3: If the compaction effectiveness of the anti-icing asphalt pavement is determined to be lower than the allowable range based on the maximum compressibility thickness of the anti-icing asphalt pavement, the speed of the compaction motor is adjusted; or, the tilt angle of the compaction terminal is adjusted according to the average pressure of the formwork on both sides of the pavement.
[0038] Specifically, the dynamic force plate method can be used to test the strength of anti-icing asphalt pavement by applying a dynamic load to the pavement and measuring the pavement's response to the load.
[0039] Specifically, the formula for calculating the average compressive strength of the road surface is:
[0040]
[0041] Where P is the average compressive strength of the pavement, p v Let be the compressive strength of the v-th test area, and n be the number of test areas, where n is a natural number greater than or equal to 1.
[0042] Specifically, the maximum compressible thickness of anti-icing asphalt pavement is the difference between the pavement height after the anti-icing asphalt material is laid and the pavement height after the anti-icing asphalt material has dried.
[0043] Specifically, a first pressure sensor and a second pressure sensor are respectively installed on the asphalt formwork on both sides of the road surface, and the average pressure of the formwork on both sides of the road surface is the average value of the pressure detected by the first pressure sensor and the second pressure sensor.
[0044] Specifically, the tilt angle of the compaction terminal refers to the angle formed between the flat plate and the ground, and the tilt angle of the compaction terminal is adjusted by adjusting the electric knob.
[0045] Specifically, step S2 includes the following steps:
[0046] Step S21: If the average compressive strength of the road surface meets the preset first strength condition or the preset second strength condition, it is determined that the accuracy of the anti-icing road surface construction is lower than the allowable range.
[0047] Step S22: Under the preset first strength condition, adjust the material feeding speed of the paving equipment; under the preset second strength condition, obtain the compression thickness of the anti-icing asphalt pavement within a unit cycle, and screen out the maximum compression thickness of the anti-icing asphalt pavement.
[0048] Specifically, step S3 includes the following steps:
[0049] Step S31: If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset first thickness condition or the preset second thickness condition, the compaction effectiveness of the anti-icing asphalt pavement is determined to be lower than the allowable range.
[0050] Step S32: Adjust the speed of the compaction motor under the preset first thickness condition; detect the average pressure of the formwork on both sides of the road surface under the preset second thickness condition;
[0051] Step S33: If the average pressure of the formwork on both sides of the road surface is less than the preset pressure, the tilt angle of the compaction terminal is adjusted.
[0052] Please continue reading. Figure 2 As shown, the process for determining the accuracy of the anti-icing pavement construction includes: if the average compressive strength of the pavement is less than or equal to the preset second compressive strength, the accuracy of the anti-icing pavement construction is determined to be below the allowable range.
[0053] If the average compressive strength of the road surface only meets the preset first strength condition, the material feeding speed of the paving equipment will be adjusted.
[0054] If the average compressive strength of the pavement only meets the preset second strength condition, it is initially determined that the compaction effectiveness of the anti-icing asphalt pavement is below the allowable range, and the compaction effectiveness of the anti-icing asphalt pavement is further determined based on the maximum compressible thickness of the anti-icing asphalt pavement.
[0055] The first preset strength condition is that the average compressive strength of the road surface is less than or equal to the first preset compressive strength; the second preset strength condition is that the average compressive strength of the road surface is greater than the first preset compressive strength and less than or equal to the second preset compressive strength; and the first preset compressive strength is less than the second preset compressive strength.
[0056] Please continue reading. Figure 2 As shown, the process of adjusting the material feeding speed of the paving equipment is to increase the material feeding speed of the paving equipment according to the difference between the preset first compressive strength and the average compressive strength of the road surface.
[0057] Specifically, the average compressive strength of the road surface is denoted as P, the preset first compressive strength is denoted as P1, the preset second compressive strength is denoted as P2, the difference between the preset first compressive strength and the average compressive strength of the road surface is denoted as ΔP, ΔP is set to P1 - P, and the preset compressive strength difference is denoted as ΔP0.
[0058] If △P≤△P0, the material feeding speed V of the laying equipment is adjusted using the preset first speed adjustment coefficient α1;
[0059] If △P>△P0, the material feeding speed V of the laying equipment is adjusted using the preset second speed adjustment coefficient α2;
[0060] Where 0 < α1 < α2 < 1, the adjusted material feeding speed of the laying equipment V' = V × (1 + αi), αi is the preset speed adjustment coefficient of the i-th speed, and i = 1, 2 is set.
[0061] Specifically, the material feeding speed of the laying equipment can be adjusted by adjusting the travel speed of the laying equipment.
[0062] The construction method described in this invention determines the accuracy of anti-icing pavement construction based on the average compressive strength of the pavement during construction tests. Since blockage at the discharge port of the construction equipment or adhesion caused by a drop in the temperature of the anti-icing asphalt material during construction can reduce the smoothness of some sections of the pavement, thus decreasing the overall compressive strength of the asphalt pavement, the method overcomes the impact of blockage at the discharge port by increasing the discharge speed of the paving equipment and reduces the degree of blockage by increasing the impact force of the discharge, thereby further improving the quality and efficiency of anti-icing asphalt pavement construction.
[0063] Please continue reading. Figure 3 As shown, the secondary determination process for the compaction effectiveness of the anti-icing asphalt pavement includes,
[0064] The compressibility thickness of the anti-icing asphalt pavement was tested several times within a unit period to screen out the maximum compressibility thickness of the anti-icing asphalt pavement.
[0065] If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset first thickness condition or the preset second thickness condition, the compaction effectiveness of the anti-icing asphalt pavement is determined to be below the allowable range in the second determination.
[0066] If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset first thickness condition, the speed of the compaction motor is adjusted.
[0067] If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset second thickness condition, it is initially determined that the effectiveness of the compressive force transmission is below the allowable range, and the effectiveness of the compressive force transmission is further determined based on the average pressure of the formwork on both sides of the pavement.
[0068] The first preset thickness condition is that the maximum compressible thickness of the anti-icing asphalt pavement is less than the first preset compressible thickness; the second preset thickness condition is that the maximum compressible thickness of the anti-icing asphalt pavement is greater than the first preset compressible thickness and less than the second preset compressible thickness; and the first preset compressible thickness is less than the second preset compressible thickness.
[0069] Please continue reading. Figure 3 As shown, the rotational speed of the compaction motor is determined by the difference between the preset first compression thickness and the maximum compression thickness of the anti-icing asphalt pavement.
[0070] Specifically, the maximum compressible thickness of the anti-icing asphalt pavement is denoted as H, the preset first compressible thickness is denoted as H1, the preset second compressible thickness is denoted as H2, the difference between the preset first compressible thickness and the maximum compressible thickness of the anti-icing asphalt pavement is denoted as ΔH, ΔH is set to H1 - H, and the preset compressible thickness difference is denoted as ΔH0.
[0071] If △H≤△H0, the speed Z of the compaction motor is adjusted using the preset first speed adjustment coefficient β1;
[0072] If ΔH>ΔH0, the speed Z of the compaction motor is adjusted using the preset second speed adjustment coefficient β2;
[0073] Where 1 < β1 < β2, the adjusted compaction motor speed Z' = Z × βj, βj is the preset speed adjustment coefficient for the j-th speed, and j = 1, 2 is set.
[0074] During the trial construction of the construction method described in this invention, the compaction effectiveness of the anti-icing asphalt pavement is determined based on its maximum compressible thickness. A certain distance exists between the compaction motor and the compaction terminal. Due to the instability of the internal structure of the compaction equipment, the output power of the compaction motor is lost during transmission, making it insufficient to support normal compaction operations at the compaction terminal. This results in a smaller maximum compressible thickness, reduced density, and decreased compressive strength of the anti-icing asphalt pavement. By reducing the speed of the compaction motor, the stability of the internal structure of the compaction equipment is increased, further improving the quality and efficiency of the anti-icing asphalt pavement construction.
[0075] Please continue reading. Figure 3 As shown, the process of making a secondary judgment on the effectiveness of the compaction force transmission includes: if the average pressure of the formwork on both sides of the road surface is less than the preset pressure, the secondary judgment is that the effectiveness of the compaction force transmission is lower than the allowable range, and the tilt angle of the compaction terminal is adjusted.
[0076] Please continue reading. Figure 3 As shown, the tilt angle of the compaction terminal is determined by the difference between the preset pressure and the average pressure of the formwork on both sides of the road surface.
[0077] Specifically, the average pressure of the formwork on both sides of the road surface is denoted as F, the preset pressure is denoted as F0, the difference between the preset pressure and the average pressure of the formwork on both sides of the road surface is denoted as ΔF, ΔF = F0 - F, and the difference between the preset pressure and ΔF0 is denoted as ΔF0.
[0078] If △F≤△F, the tilt angle A of the compaction terminal is adjusted using the preset first angle adjustment coefficient ζ1;
[0079] If △F>△F, the tilt angle A of the compaction terminal is adjusted using the preset second angle adjustment coefficient ζ2;
[0080] Where 1 < ζ1 < ζ2, the tilt angle A' of the adjusted compaction terminal is A × ln(1 + ζg), ζg is the preset adjustment coefficient for the g-th angle, and g is set to 1, 2.
[0081] During the trial construction, the construction method described in this invention adjusts the inclination angle of the compaction terminal according to the average pressure of the formwork on both sides of the road surface. By increasing the inclination angle of the compaction terminal, the pressure of the compaction terminal on the anti-icing asphalt material on the road surface is increased, thereby reducing the density of the anti-icing asphalt pavement and increasing its compressive strength, thus further improving the quality and efficiency of the construction of anti-icing asphalt pavement.
[0082] Please continue reading. Figure 4 As shown, the compaction terminal includes:
[0083] A control lever, which is connected to the compaction motor, is used to transmit the output power of the compaction motor;
[0084] Find a flat plate, which is connected to the control rod, to compact the anti-icing asphalt material on the road surface;
[0085] An electric knob, which is connected to the control lever and the leveling plate respectively, is used to adjust the tilt angle of the leveling plate.
[0086] Specifically, the anti-icing asphalt material used in the anti-icing pavement layer includes: 70%–85% crushed stone, 5%–12% modified emulsified asphalt, 1%–3% mineral powder, and 1%–2% de-icing salt material.
[0087] Example 1
[0088] In Embodiment 1 of this invention, the dynamic force plate method was used to test the strength of the anti-icing asphalt pavement. The average compressive strength of the asphalt pavement was calculated to be P = 3.9 MPa. A preset first compressive strength P1 = 4 MPa, a preset second compressive strength P2 = 6 MPa, and a preset compressive strength difference ΔP0 = 0.07 MPa were calculated. The difference between the preset first compressive strength and the average compressive strength of the pavement was calculated to be ΔP = 0.1 MPa.
[0089] If △P>△P0, the material feeding speed V=100kg / h of the laying equipment is adjusted using the preset second speed adjustment coefficient α2=0.3;
[0090] The adjusted material feeding speed of the laying equipment is V' = 100 kg / h × (1 + 0.3) = 130 kg / h.
[0091] The construction method of the present invention determines that when the accuracy of anti-icing pavement construction is below the allowable range based on the average compressive strength of the asphalt pavement, the material discharge speed of the paving equipment is adjusted to reduce the impact of material discharge port blockage on construction, thereby further improving the quality and efficiency of anti-icing asphalt pavement construction.
[0092] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.
Claims
1. A construction method for anti-icing asphalt pavement, characterized in that, include: Step S1: Clean the ground surface and set up asphalt formwork on both sides of the road. Use paving equipment to lay anti-icing asphalt material on the cleaned road surface and compact the anti-icing asphalt material to complete the road compressive strength test. Step S2: If the accuracy of the anti-icing pavement construction is lower than the allowable range based on the average compressive strength of the pavement, determine the material release speed of the paving equipment; or, preliminarily determine that the compaction effectiveness of the anti-icing asphalt pavement is lower than the allowable range, and obtain the maximum compressive thickness of the anti-icing asphalt pavement. Step S3: If the compaction effectiveness of the anti-icing asphalt pavement is determined to be lower than the allowable range based on the maximum compressibility thickness of the anti-icing asphalt pavement, the speed of the compaction motor is adjusted, or the tilt angle of the compaction terminal is adjusted according to the average pressure of the formwork on both sides of the pavement. The process for determining the accuracy of the anti-icing pavement construction includes determining that if the average compressive strength of the pavement is less than or equal to the preset second compressive strength, the accuracy of the anti-icing pavement construction is below the allowable range. If the average compressive strength of the road surface only meets the preset first strength condition, the material feeding speed of the paving equipment will be adjusted. If the average compressive strength of the pavement only meets the preset second strength condition, it is initially determined that the compaction effectiveness of the anti-icing asphalt pavement is below the allowable range, and the compaction effectiveness of the anti-icing asphalt pavement is further determined based on the maximum compressible thickness of the anti-icing asphalt pavement. The secondary determination process for the compaction effectiveness of the aforementioned anti-icing asphalt pavement includes... The compressibility thickness of the anti-icing asphalt pavement was tested several times within a unit period to screen out the maximum compressibility thickness of the anti-icing asphalt pavement. If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset first thickness condition or the preset second thickness condition, the compaction effectiveness of the anti-icing asphalt pavement is determined to be below the allowable range in the second determination. If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset first thickness condition, the speed of the compaction motor is adjusted. If the maximum compressible thickness of the anti-icing asphalt pavement is within the preset second thickness condition, it is initially determined that the effectiveness of the compressive force transmission is below the allowable range, and the effectiveness of the compressive force transmission is further determined based on the average pressure of the formwork on both sides of the pavement. The process of making a secondary determination of the effectiveness of the compaction force transmission includes: if the average pressure of the formwork on both sides of the road surface is less than the preset pressure, the secondary determination of the effectiveness of the compaction force transmission is lower than the allowable range, and the tilt angle of the compaction terminal is adjusted.
2. The construction method for anti-icing asphalt pavement according to claim 1, characterized in that, The first preset strength condition is that the average compressive strength of the road surface is less than or equal to the first preset compressive strength; the second preset strength condition is that the average compressive strength of the road surface is greater than the first preset compressive strength and less than or equal to the second preset compressive strength. The preset first compressive strength is less than the preset second compressive strength.
3. The construction method for anti-icing asphalt pavement according to claim 2, characterized in that, The process of adjusting the material feeding speed of the paving equipment is as follows: the material feeding speed of the paving equipment is increased according to the difference between the preset first compressive strength and the average compressive strength of the road surface.
4. The construction method for anti-icing asphalt pavement according to claim 3, characterized in that, The preset first thickness condition is that the maximum compressible thickness of the anti-icing asphalt pavement is less than the preset first compressible thickness. The preset second thickness condition is that the maximum compressible thickness of the anti-icing asphalt pavement is greater than the preset first compressible thickness and less than the preset second compressible thickness. The preset first compression thickness is less than the preset second compression thickness.
5. The construction method for anti-icing asphalt pavement according to claim 4, characterized in that, The rotational speed of the compaction motor is determined by the difference between the preset first compression thickness and the maximum compression thickness of the anti-icing asphalt pavement.
6. The construction method for anti-icing asphalt pavement according to claim 5, characterized in that, The tilt angle of the compaction terminal is determined by the difference between the preset pressure and the average pressure of the formwork on both sides of the road surface.
7. The construction method for anti-icing asphalt pavement according to claim 6, characterized in that, The compaction terminal includes: A control lever, which is connected to the compaction motor, is used to transmit the output power of the compaction motor; Find a flat plate, which is connected to the control rod, to compact the anti-icing asphalt material on the road surface; An electric knob, which is connected to the control lever and the leveling plate respectively, is used to adjust the tilt angle of the leveling plate.
Citation Information
Patent Citations
Asphalt pavement and construction method thereof
CN114635324A
System and method for laying down and compacting an asphalt layer
CN102747673A