CN110453581B - Construction method for treating semi-rigid base asphalt pavement cracks - Google Patents
Construction method for treating semi-rigid base asphalt pavement cracks Download PDFInfo
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- CN110453581B CN110453581B CN201910695254.2A CN201910695254A CN110453581B CN 110453581 B CN110453581 B CN 110453581B CN 201910695254 A CN201910695254 A CN 201910695254A CN 110453581 B CN110453581 B CN 110453581B
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- crack
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
- E01C23/0966—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
- E01C23/0973—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with liquid or semi-liquid materials, e.g. crack sealants
Abstract
The invention provides a construction method for treating semi-rigid base asphalt pavement cracks. The construction method comprises the steps of firstly, accurately detecting crack positions by using a three-dimensional ground penetrating radar, specifically arranging a special grouting pipe according to a detection result of the three-dimensional ground penetrating radar, then sealing the surfaces of cracks, and finally performing penetrating grouting, so that the effects of improving a construction process, shortening a construction period and reducing construction machinery and personnel investment are achieved.
Description
Technical Field
The invention relates to the technical field of constructional engineering, in particular to a construction method for treating semi-rigid base asphalt pavement cracks.
Background
At present, the construction of high-grade roads in China is in a rapid development stage, the mileage of a high-speed kilometer in China exceeds 14 kilometers by 2018, and a semi-rigid base asphalt pavement is used as one of main road structure types of the high-grade roads, is most widely applied to the high-grade roads in China and accounts for more than 80% of the whole high-grade roads. The semi-rigid base asphalt pavement used on the expressway in China generally comprises a semi-rigid base subbase layer, an asphalt pavement and the like, heavy-duty vehicles are increased day by day along with the increasing of road traffic volume, the overload phenomenon of the vehicles is very serious, and the semi-rigid base layer and the asphalt pavement can generate cracks with different degrees and shapes under the influence of various environmental factors such as pavement structure types, climates, landforms, driving loads and the like, wherein the cracks mainly comprise reflection cracks. The third method is to use hot asphalt or self-adhesive tape to treat the surface, and the methods have the characteristics of large influence on traffic interference, long construction period, long traffic sealing time, incomplete treatment and the like.
Disclosure of Invention
The invention aims to provide a construction method for treating semi-rigid base asphalt pavement cracks, which aims to solve the problems in the prior art.
The technical scheme adopted for achieving the aim of the invention is that the construction method for treating the semi-rigid base asphalt pavement cracks comprises the following steps:
1) and cleaning the crack part of the road surface.
2) And detecting the pavement crack part by using a three-dimensional ground penetrating radar, and analyzing the reflection crack in detail by combining the detection result.
And 2.1) detecting the road condition by using a three-dimensional ground penetrating radar in a detection range according to design requirements, and acquiring a detection gray level image of the radar parallel to the road surface and a transverse and longitudinal section detection gray level image.
2.2) determining the plane distribution condition of the pavement cracks at different depths of the road structure layer according to the detection gray level image parallel to the pavement.
And 2.3) determining the trend, the opening and the depth information of the pavement crack according to the detection gray level image parallel to the pavement. And (5) detecting the gray level image by using a transverse and longitudinal section radar to perform secondary judgment on the crack depth.
And 2.4) extracting a normal road structure layer reflection waveform, and recording the maximum amplitude F of the normal road structure layer reflection wave. And extracting radar reflection waveforms along the trend of the crack, analyzing signals at the position of the crack, and extracting crack reflection wave signals of different depths. The maximum amplitude f of the reflected signal is recorded every 1cm in the road depth direction. If F is larger than or equal to F, the maximum depth of the crack is judged, and data are recorded.
3) And (3) distributing a plurality of drill holes at the crack position according to the detection result of the three-dimensional ground penetrating radar in the step 2).
4) And embedding grouting pipes in the drill holes. Wherein the grouting pipe is vertically arranged. The upper end of the body of the grouting pipe is provided with a grouting hole, and the lower end of the body of the grouting pipe is closed. The lower end of the grouting pipe extends to the bottom of the crack. And the pipe wall of the grouting pipe is provided with a plurality of grouting holes.
5) And (5) pasting a sealing strip along the pavement crack.
6) And injecting permeable slurry into the grouting pipe. The permeable slurry permeates, diffuses and cements the road material.
7) And (4) plugging the grouting holes by using hot asphalt.
Further, in the step 6), the permeable slurry is weighed according to the following raw materials in parts by weight: 100 parts of Portland cement, 25 parts of selected quartz sand, 35 parts of water, 1 part of alkali activator and 10 parts of adhesive are mixed to obtain the permeable slurry.
Further, step 1) has a related step of cleaning the crack slot by using a high-power blower.
Further, step 7) is followed by an associated step of cleaning the road surface.
Further, in the step 3), the drill holes are arranged at intervals along the trend of the pavement crack, and the center distance between every two adjacent drill holes is 30 cm.
Further, step 7) is preceded by a related step of curing for 30 minutes.
The technical effects of the invention are undoubted:
A. the conventional treatment method is changed, and the construction process is improved;
B. the construction period is shortened, the influence of construction on traffic is reduced, and the investment of construction machinery equipment and the cooperation of labor force are reduced;
C. the overall construction quality is improved.
Drawings
FIG. 1 is a schematic view of a grouting pipe;
fig. 2 is a schematic diagram of a borehole arrangement.
In the figure: grouting pipe 1, grouting hole 101, mud jacking hole 102.
Detailed Description
The present invention is further illustrated by the following examples, but it should not be construed that the scope of the above-described subject matter is limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the conventional methods are mostly technologies of excavation type maintenance, additional paving of overlay or pavement regeneration and the like, the traffic needs to be interrupted, the construction period is long, and the treatment effect is poor. The embodiment provides a construction method for treating semi-rigid base asphalt pavement cracks, which comprises the following steps:
1) and cleaning the crack part of the road surface, and cleaning the crack slot by using a high-power blower.
2) And detecting the pavement crack part by using a three-dimensional ground penetrating radar, and analyzing the reflection crack in detail by combining the detection result. The detection contents of the three-dimensional ground penetrating radar are the position and the size of the crack and the disease condition of the part below the base layer. The three-dimensional ground penetrating radar gray level image can show the horizontal and vertical section of road surface and be on a parallel with the radar image of the different degree of depth of road surface, through the integrated analysis to three direction testing results, can judge road surface crack width and development horizon.
And 2.1) detecting the road condition by using a three-dimensional ground penetrating radar in a detection range according to design requirements, and acquiring a detection gray level image of the radar parallel to the road surface and a transverse and longitudinal section detection gray level image.
2.2) determining the plane distribution condition of the pavement cracks at different depths of the road structure layer according to the detection gray level image parallel to the pavement.
And 2.3) determining the trend, the opening and the depth information of the pavement crack according to the detection gray level image parallel to the pavement. And (5) detecting the gray level image by using a transverse and longitudinal section radar to perform secondary judgment on the crack depth.
And 2.4) extracting a normal road structure layer reflection waveform, and recording the maximum amplitude F of the normal road structure layer reflection wave. And extracting radar reflection waveforms along the trend of the crack, analyzing signals at the position of the crack, and extracting crack reflection wave signals of different depths. The maximum amplitude f of the reflected signal is recorded every 1cm in the road depth direction. And (4) comparing the maximum amplitude F of the reflection signal at the crack position with the reflection amplitude F of the normal road structure layer. If F is not more than F, the maximum crack depth is judged here, and data is recorded.
3) And (4) according to the detection result of the three-dimensional ground penetrating radar in the step (2), arranging drill holes at the crack positions. Referring to fig. 2, the drill holes are arranged at intervals along the direction of the pavement crack, and the distance between the centers of the adjacent drill holes is 30 cm.
4) The grouting pipes 1 are buried in the respective drilled holes. Wherein the grouting pipe 1 is arranged vertically. Referring to fig. 1, the body of the grouting pipe 1 has grouting holes 101 at the upper end and is closed at the lower end. The lower end of the grouting pipe 1 extends to the bottom of the crack. In actual production, grouting holes 102 are formed in two sides of the pipe wall of the grouting pipe 1. The opening direction of the grout holes 102 is the same as the crack propagation direction.
5) And (5) pasting a sealing strip along the pavement crack.
6) The slurry pipe 1 is filled with a permeable slurry. The permeable slurry permeates, diffuses and cements the road material. Wherein the permeable serous fluid is weighed according to the following raw materials in parts by weight: 100 parts of Portland cement, 25 parts of selected quartz sand, 35 parts of water, 1 part of alkali active agent and 10 parts of adhesive are mixed to obtain permeable slurry; .
7) And (5) maintaining for 30 minutes, and plugging the grouting holes 101 by using hot asphalt.
8) And cleaning the road surface.
Example 2:
the embodiment provides a construction method for treating a semi-rigid base asphalt pavement crack on a foundation, which comprises the following steps:
1) and cleaning the crack part of the road surface.
2) And detecting the pavement crack part by using a three-dimensional ground penetrating radar, and analyzing the reflection crack in detail by combining the detection result.
And 2.1) detecting the road condition by using a three-dimensional ground penetrating radar in a detection range according to design requirements, and acquiring a detection gray level image of the radar parallel to the road surface and a transverse and longitudinal section detection gray level image.
2.2) determining the plane distribution condition of the pavement cracks at different depths of the road structure layer according to the detection gray level image parallel to the pavement.
And 2.3) determining the trend, the opening and the depth information of the pavement crack according to the detection gray level image parallel to the pavement. And (5) detecting the gray level image by using a transverse and longitudinal section radar to perform secondary judgment on the crack depth.
And 2.4) extracting a normal road structure layer reflection waveform, and recording the maximum amplitude F of the normal road structure layer reflection wave. And extracting radar reflection waveforms along the trend of the crack, analyzing signals at the position of the crack, and extracting crack reflection wave signals of different depths. The maximum amplitude f of the reflected signal is recorded at intervals along the depth of the road. If F is not more than F, the maximum crack depth is judged here, and data is recorded.
3) And (3) distributing a plurality of drill holes at the crack position according to the detection result of the three-dimensional ground penetrating radar in the step (2).
4) The grouting pipes 1 are buried in the respective drilled holes. Wherein the grouting pipe 1 is arranged vertically. The upper end of the body of the grouting pipe 1 is provided with a grouting hole 101, and the lower end is closed. The lower end of the grouting pipe 1 extends to the bottom of the crack. And grouting holes 102 are formed in the pipe wall of the grouting pipe 1. The special grouting pipe 1 can enable the permeation grouting material to diffuse along the transverse direction, and road cracks can be well filled.
5) And (5) pasting a sealing strip along the pavement crack.
6) The slurry pipe 1 is filled with a permeable slurry. The permeable slurry permeates, diffuses and cements the road material.
7) The grout holes 101 are plugged with hot asphalt.
It is worth to be noted that the embodiment changes the conventional treatment method for treating the semi-rigid base asphalt pavement cracks, thereby achieving the effects of improving the construction process, shortening the construction period and reducing the investment of construction machinery and personnel.
Example 3:
the main steps of this example are the same as example 2, wherein, in step 6), the permeable slurry is weighed according to the following raw materials in parts by weight: 100 parts of Portland cement, 25 parts of selected quartz sand, 35 parts of water, 1 part of alkali activator and 10 parts of adhesive are mixed to obtain the permeable slurry. The permeable slurry has low viscosity and good permeability, and can well permeate, diffuse and bond road materials.
Example 4:
the main steps of this example are the same as example 2, wherein, in step 1), the related step of cleaning the crack slot by using a high-power blower is also provided.
Example 5:
the main steps of this example are the same as example 2, wherein step 7) is followed by the relevant steps of cleaning the road surface.
Example 6:
the main steps of the embodiment are the same as those of embodiment 2, wherein in step 3), the drill holes are arranged at intervals along the trend of the pavement crack, and the center distance between the adjacent drill holes is 30 cm.
Example 7:
the main steps of this example are the same as example 2, wherein step 7) is preceded by the steps associated with curing for 30 minutes.
Example 8:
the main steps of this example are the same as example 2, wherein the detection range in step 2.1) is within 1.5m before and after the crack.
Claims (7)
1. A construction method for treating semi-rigid base asphalt pavement cracks is characterized by comprising the following steps:
1) cleaning a pavement crack part;
2) detecting the pavement crack part by using a three-dimensional ground penetrating radar, and analyzing the reflection crack in detail by combining the detection result;
2.1) detecting the road condition by using a three-dimensional ground penetrating radar in a detection range according to design requirements, and acquiring a detection gray level image of the radar parallel to the road surface and a transverse and longitudinal section detection gray level image;
2.2) determining the plane distribution condition of the pavement cracks at different depths of the road structure layer according to the detection gray level image parallel to the pavement;
2.3) determining the trend, the opening and the depth information of the pavement crack according to the detection gray level image parallel to the pavement; detecting a gray image by using a horizontal and vertical section radar to perform secondary judgment on the crack depth;
2.4) extracting a normal road structure layer reflection waveform, and recording the maximum amplitude F of a normal road structure layer reflection wave; extracting radar reflection waveforms along the trend of the crack, analyzing signals at the position of the crack, and extracting crack reflection wave signals at different depths; recording the maximum amplitude f of the reflected signal at intervals along the depth direction of the road; if F is not more than F, judging that the maximum crack depth is the maximum crack depth, and recording data;
3) according to the detection result of the three-dimensional ground penetrating radar in the step 2), arranging a plurality of drill holes at the crack part;
4) embedding grouting pipes (1) in the drill holes; wherein the grouting pipes (1) are arranged vertically; the upper end of the body of the grouting pipe (1) is provided with a grouting hole (101), and the lower end of the body is closed; the lower end of the grouting pipe (1) extends to the bottom of the crack; the pipe wall of the grouting pipe (1) is provided with a plurality of grouting holes (102);
5) pasting a sealing tape along the pavement crack;
6) injecting permeable slurry into the grouting pipe (1); the permeable slurry permeates, diffuses and cements the road material;
7) and (4) plugging the grouting holes (101) by using hot asphalt.
2. The construction method for treating cracks of a semi-rigid base asphalt pavement according to claim 1, wherein the construction method comprises the following steps: in the step 6), the permeable serous fluid is weighed according to the following raw materials in parts by weight: 100 parts of Portland cement, 25 parts of selected quartz sand, 35 parts of water, 1 part of alkali activator and 10 parts of adhesive are mixed to obtain the permeable slurry.
3. The construction method for treating cracks of a semi-rigid base asphalt pavement according to claim 1, wherein the construction method comprises the following steps: in step 1), the related step of cleaning the crack slot by using a high-power blower is also provided.
4. The construction method for treating cracks of a semi-rigid base asphalt pavement according to claim 1, wherein the construction method comprises the following steps: step 7) is followed by the relevant step of cleaning the road surface.
5. The construction method for treating cracks of a semi-rigid base asphalt pavement according to claim 1, wherein the construction method comprises the following steps: in the step 3), the drill holes are arranged at intervals along the trend of the pavement crack, and the center distance between every two adjacent drill holes is 30 cm.
6. The construction method for treating cracks of a semi-rigid base asphalt pavement according to claim 1, wherein the construction method comprises the following steps: step 7) was preceded by the relevant step of curing for 30 minutes.
7. The construction method for treating cracks of a semi-rigid base asphalt pavement according to claim 1, wherein the construction method comprises the following steps: the detection range in the step 2.1) is within 1.5m before and after the crack.
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| CN111893826A (en) * | 2020-08-05 | 2020-11-06 | 沈阳工业大学 | Construction method for treating roadbed damage and grouting |
| CN112684440A (en) * | 2020-12-17 | 2021-04-20 | 江苏中路工程技术研究院有限公司 | Crack evaluation method based on three-dimensional ground penetrating radar detection |
| CN112626994A (en) * | 2020-12-23 | 2021-04-09 | 河南长安交通科技发展有限公司 | Chemical treatment method for road semi-rigid base cracks |
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