[0027] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it with reference to the description.
[0028] like Figure 1 to Figure 3 As shown, the present invention provides an asphalt pavement construction method, comprising:
[0029] Step 1. Clean the gaps in the asphalt pavement to be repaired;
[0030] Step 2: Heating the asphalt pavement to be repaired that has been cleaned in step 1, then cutting and crushing the gaps on the asphalt pavement to be repaired, adding an asphalt rejuvenating agent to the gaps while cutting and crushing to restore the crushed asphalt to fill gaps;
[0031] Step 3. After the crushing work in Step 2 is completed, continue to add asphalt repairing agent to the gap, and further fill the gap of the asphalt pavement to be repaired;
[0032] Step 4: After the gap in Step 3 is filled with asphalt repairing agent, the repaired road surface is rolled by a road roller, and then a composite fiber cloth is laid on the rolled road surface.
[0033] In the above technical solution, the repair operation for the gap of the asphalt pavement to be repaired mainly includes four parts:
[0034] Step 1. Clean the gap of the asphalt pavement to be repaired. Here, the debris and garbage in the gap can be blown out by a high-pressure air gun.
[0035] In step 2, the hot air circulation heating is performed on the asphalt pavement to be repaired that has been cleaned in step 1 until the asphalt mixture on the surface layer of the asphalt pavement to be repaired can be loosened, and then the gaps on the asphalt pavement to be repaired are raked. For cutting and crushing, add asphalt rejuvenating agent to the gap while cutting and crushing; the asphalt regenerating agent can re-aggregate the broken and aged asphalt and fill the gap to a certain extent. The heating operation here can be realized by a hot air circulating oven, cutting The crushing operation can be achieved by cutting machines, and the asphalt rejuvenating agent can be added to the gaps manually or mechanically.
[0036] Step 3. After the cutting and crushing work in Step 2 is completed, continue to add asphalt repairing agent to the gap, and further fill the gap of the asphalt pavement to be repaired; because the asphalt rejuvenating agent and the broken and aged asphalt can only fill a part of the gap space Therefore, it is necessary to further fill the gap with an asphalt repair agent. The asphalt repair agent here can be completely composed of asphalt raw materials, or it can be based on the asphalt raw materials. Some other agents with a promoting effect, such as tackifiers, etc., can be added.
[0037] Step 4: After the gap in Step 3 is filled with asphalt repairing agent, the repaired road surface is rolled by a road roller, and then a composite fiber cloth is laid on the rolled road surface. The composite fiber cloth can be removed after 2 to 3 hours after laying it on, and all the work of asphalt pavement repair is completed.
[0038] In another technical solution, in the asphalt pavement construction method, the asphalt rejuvenating agent comprises 10 parts by weight of base asphalt, 70 parts of corn oil or lubricating oil, 10 parts of zinc ricinoleate, 5 parts of dicyclopentadiene petroleum resin. The asphalt rejuvenating agent in this scheme can re-aggregate the aged asphalt and improve the utilization rate of resources.
[0039]In another technical solution, in the asphalt pavement construction method, the asphalt repair agent comprises 100 parts by weight of base asphalt, 10 parts of furfural extraction oil, 5 parts of perchlorinated vinyl resin, 5 parts of methyl alcohol Etherified hexamethylol melamine resin and 3 parts of isooctyl alcohol. The asphalt repair agent in this scheme is mainly composed of matrix asphalt, which is used to fill the gaps of the road surface to be repaired. In addition to the matrix asphalt, the aforementioned asphalt repair agent also adds furfural extraction oil, perchlorinated vinyl resin, methyl etherified hexamethylol Active substances such as base melamine resin and isooctanol, among which perchlorinated vinyl resin improves the high temperature resistance of asphalt repair agent, methyl etherified hexamethylol melamine resin improves the viscosity of asphalt repair agent, furfural extraction oil and isooctanol have a higher performance. High compatibility can improve the mutual solubility of asphalt repairing agent and other substances, so the asphalt repairing agent provided in this technical solution can achieve excellent fusion with the aged asphalt in step 2 and the added asphalt rejuvenating agent and other materials. effect, thereby improving the stability of the pavement structure.
[0040] In another technical solution, in the asphalt pavement construction method, the composite fiber cloth is one of non-woven fabric, glass fiber cloth or polyester fiber cloth. The function of the composite fiber cloth is to maintain the repaired asphalt pavement and prevent the newly repaired asphalt pavement from being damaged.
[0041] In another technical solution, in the asphalt pavement construction method, during the process of repairing the road surface to be repaired, the road surface repair device is used for repairing, and the road surface repair device includes:
[0042] repair car 1;
[0043] The cutting mechanism 2 includes a vertical rod, a telescopic arm, a telescopic rod, a motor and a cutting blade, the vertical rod is vertically arranged on the upper surface of the repair vehicle 1, and one end of the telescopic arm is horizontally aligned with the vertical The top of the rod is connected, the lower surface of the other end of the telescopic arm is connected with the top of the telescopic rod, the motor is arranged at the bottom end of the telescopic rod, and the cutting blade is coaxially sleeved on the output of the motor On the shaft, the axis of the cutting blade is perpendicular to the axis of the telescopic rod, and the cutting blade is used for cutting and breaking the gap 5 on the asphalt pavement to be repaired in step 2;
[0044] The first spray mechanism includes a pair of first spray pipes 31 , a first electric heater 32 , a first oil pressure pump 33 and a first asphalt tank 34 , the first electric heater 32 and the first oil pressure pump 33 And the first asphalt tank 34 is arranged on the repair vehicle 1, and a pair of the first spray pipes 31 are symmetrically arranged on both sides of the cutting blade 25 along the radial direction of the cutting blade 25. The bottom of the pipe 31 is provided with a first nozzle 311, the first nozzle 311 is in the shape of a slit, the spray direction of the first nozzle 311 is toward the bottom of the cutting blade 25, and the spray surface of the first nozzle 311 is the same as that of the cutting blade 25. The surfaces of the cutting blades 25 are located on the same level, and the first nozzle 31 is communicated with the first electric heater 32 , the first oil pump 33 and the first asphalt tank 34 in sequence. Asphalt regeneration agent is installed, and the first injection mechanism is used to add asphalt regeneration agent to the gap 5 of the road to be repaired. The heater 32 and the first oil pressure pump 33, the first oil pressure pump 33 pumps the asphalt regenerant in the first asphalt tank 34 into the first electric heater 32, and the asphalt regenerant passes through the After the first electric heater 32 is heated, it enters the first nozzle 31, and is sprayed into the gap 5 of the road to be repaired by the first nozzle 311;
[0045] The second spray mechanism 4 includes a second spray pipe 41 , a third spray pipe 42 , a second electric heater 43 , a second oil pump 44 , a second asphalt tank 45 and a high-pressure hot air blower 46 . A heater 43 , a second hydraulic pump 44 , a second asphalt tank 45 and a high-pressure hot air blower 46 are arranged on the repair vehicle, the second nozzle 41 is a cylinder, and both ends of the second nozzle 41 Closed, one end of the second nozzle 41 is provided with a second nozzle, the second nozzle is in the shape of a slit, the third nozzle 42 is annular, and the third nozzle 42 is coaxially sleeved On the outer periphery of the second nozzle 41, a plurality of third nozzles are opened on the side wall of the third nozzle 42 facing the second nozzle, and the other end of the second nozzle 41 is connected to the second nozzle through a conduit. The second electric heater 43 , the second hydraulic pump 44 and the second asphalt tank 45 are connected in sequence, the second asphalt tank 45 is filled with asphalt repairing agent, and the third nozzle 42 is connected to the high-pressure hot air blower 46 The second injection mechanism is used to add asphalt repairing agent to the gap 5 of the road to be repaired. After the cutting and crushing work in step 2 is completed, the second electric heater 43 and the second oil pressure are activated. Pump 44, the second hydraulic pump 44 pumps the asphalt repairing agent in the second asphalt tank 45 into the second electric heater 43, after the asphalt repairing agent is heated by the second electric heater 43, Entering the second nozzle 41, the second nozzle is sprayed into the gap 5 of the road surface to be repaired, and the high-pressure hot air blower 46 is started while adding the asphalt repairing agent, and the high-pressure hot air blower 46 generates The hot air is injected around the injection surface of the second nozzle through the third nozzle 42, so as to increase the temperature of the asphalt repair agent.
[0046] As shown in the above technical solutions, in order to improve the repairing effect of the road surface, the present invention provides a road surface repairing device for repairing the gap 5 on the road surface to be repaired. The pavement repairing device in this design scheme mainly includes four parts, namely a repairing vehicle 1 , a cutting mechanism 2 , a first spraying mechanism and a second spraying mechanism 4 .
[0047] Among them, the repair vehicle 1 can be realized by an ordinary truck; the cutting mechanism 2 is mainly used to cut the aging asphalt pavement around the gap 5, and the cutting mechanism 2 here includes a vertical rod 21, a telescopic arm 22, a telescopic rod 23, a motor 24 and a cutting blade 25. The vertical rod 21 is vertically arranged on the upper surface of the repairing vehicle 1, the top of the vertical rod 21 is connected with one end of the telescopic arm 22 in the horizontal direction, the telescopic rod 23 is located under the telescopic arm 22, and the top of the telescopic rod 23 is connected to the telescopic arm. The other end of 22 is connected, the motor 24 is arranged at the bottom end of the telescopic rod 23, the cutting blade 25 is circular, and is coaxially sleeved on the output shaft of the motor 24 and can be rotated under the driving of the motor 24, the axis of the cutting blade 25 is perpendicular to the axis of the telescopic rod. The cutting blade 25 is mainly used for cutting and breaking the gap 5 on the asphalt pavement to be repaired in step 2. In the specific cutting work, the position of the cutting blade is first adjusted by the telescopic arm 22 and the telescopic rod 23, and the cutting blade 25 Align the edge of the gap 5, and then start the motor 24 to drive the cutting blade 25 to rotate, so that the aged asphalt pavement around the gap 5 can be broken.
[0048] While cutting the aged asphalt pavement, it is also necessary to fill the pavement to be repaired, so a pavement filler is required. Since the scheme designed here is to achieve the effect of saving material resources in the operation of filling the pavement gap, so The pavement filling agent here mainly includes two parts, the asphalt rejuvenating agent and the asphalt repairing agent. The functions of the asphalt rejuvenating agent and the asphalt repairing agent have been described in detail above, so they will not be repeated. In the past construction work of pavement repair, asphalt rejuvenating agent and asphalt repairing agent are often applied to the gap manually, which affects the effect of pavement filling agent to a great extent. For this reason, this technical solution designs a first injection mechanism and a second injection mechanism 4 for the operation of applying the asphalt rejuvenating agent and the asphalt repairing agent in view of the aforementioned problems.
[0049] As mentioned above, the first spray mechanism in this solution mainly includes a pair of first spray pipes 31 , a first electric heater 32 , a first oil pump 33 and a first asphalt tank 34 . In order to apply the asphalt rejuvenating agent into the gap 5 while the cutting work is in progress, a pair of first nozzles 31 for spraying the asphalt rejuvenating agent designed here are symmetrically arranged on both sides of the cutting blade 25 and along the direction of the cutting blade 25 . For the radial arrangement, in order to improve the stability of the first nozzle 31 , the first nozzle 31 can be fixed on the lower end of the telescopic rod 23 by connecting tools such as connecting rods. Further, the bottom of the first nozzle 31 is provided with a first nozzle 311, the first nozzle 311 is in the shape of a slit and the spraying direction is toward the bottom of the cutting blade 25. In addition, in order to improve the spraying effect, the spraying surface of the first nozzle 311 should be The surface of the cutting blade 25 is on the same level, so as to ensure that all the asphalt rejuvenating agent is sprayed on the broken and aged asphalt in the gap, so as to restore the aged asphalt to active asphalt, and play the role of constructing the road again. .
[0050] In order to cooperate with the spraying operation of the first nozzle 31, the scheme further designs the corresponding first electric heater 32, the first hydraulic pump 33, the first asphalt tank 34 and other mechanisms. The first nozzle 31 and the first electric heating The device 32, the first hydraulic pump 33, and the first asphalt tank 34 are connected in sequence, and the first asphalt tank 34 is used to install the asphalt rejuvenating agent. The electric heater 32 and the first hydraulic pump 33, the first hydraulic pump 33 can pump the asphalt regeneration agent in the first asphalt tank 34 into the first electric heater 32, and the asphalt regeneration agent is heated by the first electric heater After the heater 32 is heated, it enters the first nozzle 31, and is then sprayed into the gap of the road surface to be repaired by the first nozzle 311; The heating of the heater effectively ensures the effect of the asphalt rejuvenating agent.
[0051] After the cutting work is completed, the gap 5 has been partially filled under the action of the asphalt rejuvenating agent. At this time, further repair work needs to be started—that is, the technical points described in the third step. In order to complete the further filling work in step 3, this is achieved by spraying the asphalt repairing agent through the second spraying mechanism 4 . The second spray mechanism 4 includes a second spray pipe 41 , a third spray pipe 42 , a second electric heater 43 , a second hydraulic pump 44 , a second asphalt tank 45 and a high-pressure hot air blower 46 , and the second spray pipe 41 is cylindrical One end of the second nozzle 41 is provided with a second nozzle 411, which is similar to the first nozzle 311. In order to match the shape of the slit, the second nozzle is also designed as a slit; the other side of the second nozzle 41 One end is connected to the second electric heater 43, the second hydraulic pump 44 and the second asphalt tank 45 in turn through a conduit, and the second asphalt tank 45 is equipped with an asphalt repair agent. Move the second nozzle 41 to the gap 5, align the second nozzle with the gap, then start the second electric heater 43 and the second oil pump 44, the second oil pump 44 will put the second asphalt tank 45 into the The asphalt repairing agent is pumped into the second electric heater 43, and after being heated by the second electric heater 43, the asphalt repairing agent enters the second nozzle 41, and is sprayed into the gap of the road surface to be repaired from the second nozzle. The function of the second electric heater 43 here is similar to that of the first electric heater 32 described above, and is provided to increase the temperature of the asphalt repair agent. Because the effect of the asphalt repair agent varies greatly with temperature, it must maintain better fluidity at a higher temperature. Therefore, in order to solve this problem, the third nozzle 42 is added in this design scheme. The third nozzle 42 is an annular shape and is coaxially sleeved with the outer circumference of the second nozzle 41. The side wall of the third nozzle 42 facing the second nozzle is provided with a plurality of third nozzles, and the third nozzle 42 is communicated with the high-pressure hot air blower. When adding the asphalt repairing agent, start the high-pressure hot air blower 46, and the hot air generated in the high-pressure hot air blower 46 can be sprayed toward the gap 5 of the road surface to be repaired through the third nozzle, which improves the temperature and effect of the asphalt repairing agent to a certain extent. Effect.
[0052] In another technical solution, in the asphalt pavement construction method, the temperature of the hot air injected in the third nozzle 42 is 300-400°C, and the hot-air pressure is 4-5kg/cm 2.
