CN114214895A - Construction process of water-stable base course in large-temperature-difference area - Google Patents
Construction process of water-stable base course in large-temperature-difference area Download PDFInfo
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- CN114214895A CN114214895A CN202111474427.1A CN202111474427A CN114214895A CN 114214895 A CN114214895 A CN 114214895A CN 202111474427 A CN202111474427 A CN 202111474427A CN 114214895 A CN114214895 A CN 114214895A
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- 238000010276 construction Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000008569 process Effects 0.000 title claims abstract description 22
- 239000000203 mixture Substances 0.000 claims abstract description 49
- 239000004568 cement Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000003892 spreading Methods 0.000 claims abstract description 14
- 230000007480 spreading Effects 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 63
- 238000005096 rolling process Methods 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000006641 stabilisation Effects 0.000 claims description 9
- 238000011105 stabilization Methods 0.000 claims description 9
- 239000003365 glass fiber Substances 0.000 claims description 7
- 239000010426 asphalt Substances 0.000 claims description 5
- 238000007667 floating Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000008602 contraction Effects 0.000 description 9
- 201000010099 disease Diseases 0.000 description 6
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 6
- 239000011384 asphalt concrete Substances 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 230000000087 stabilizing effect Effects 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 208000019749 Eye movement disease Diseases 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
- E01C19/4806—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing
- E01C19/4826—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with solely rollers for consolidating or finishing the materials being aggregate mixed with binders
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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
- E01C23/02—Devices for making, treating or filling grooves or like channels in not-yet-hardened paving, e.g. for joints or markings; Removable forms therefor; Devices for introducing inserts or removable insert-supports in not-yet-hardened paving
- E01C23/025—Making or working grooves or like channels in laid paving, e.g. smoothing groove edges
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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
- E01C23/03—Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The application relates to a construction process of a cement stabilized base layer in a large temperature difference area, which comprises the following steps: the method comprises the following steps: s1: construction preparation: measuring and paying off, arranging a guide beam of the paver, and testing and determining the mixture ratio in a laboratory; s2: mixing and transporting the mixture: preparing materials according to the mixture ratio provided by a laboratory, producing a mixture, and then transporting the mixture to a construction site; s3: spreading the mixture: paving the mixture on the roadbed by a paver; s4: compacting the mixture by a road roller; s5: quality inspection: unqualified, repeating S4, and after qualified, beginning water-stable base course curing; s6: after the curing is finished, constructing the expansion joint; s61: transversely cutting the cement stabilized base layer along the highway to form expansion joints, wherein the expansion joints are uniformly distributed along the length direction of the highway; s62: cleaning the expansion joint; s63: filling and filling the expansion joint; s7: after the construction of the water-stable base layer is finished, the expansion and shrinkage conditions of the water-stable base layer in the extreme environment can be reduced.
Description
Technical Field
The application relates to the field of pavement construction, in particular to a construction process of a cement stabilized base layer in a large temperature difference area.
Background
With the acceleration of highway construction pace in China, highway construction in remote areas is gradually achieved in all directions, and in rainy and humid areas, a water stabilizing base layer which is more stable and taken into consideration is required to stabilize rainwater. The cement stabilized base course is a base of a road or an airport runway and can be divided into a cement stabilized macadam base course and a cement stabilized gravel base course, and the cement stabilized macadam is generally adopted as a material of the cement stabilized macadam base course and is formed by tiling and compacting.
The general construction process of the water stable base layer comprises the following steps: construction lofting, mixture blending and transportation, mixture paving, rolling, maintenance and the like. The cement stabilized macadam takes graded macadam as aggregate, adopts a certain amount of cementing materials and enough mortar volume to fill the gap of the aggregate, and is paved and compacted according to the embedding and extruding principle. After the construction of the cement stabilized base is finished, the cement stabilized base is not muddy in rain after being formed, has high initial strength, better impermeability and frost resistance and solid surface, and is an ideal base material for high-grade pavements.
According to the related technology, after the normal construction of the cement stabilized base layer is completed, contraction joints and expansion joints with different degrees can appear under the reasons of expansion with heat and contraction with cold, and the expansion and contraction joints are extremely obvious in plateau, alpine and desert gobi areas, so that the construction quality of roads is influenced.
Disclosure of Invention
In order to reduce the expansion and contraction condition of the water stable base layer in the extreme environment, the application provides a construction process of the water stable base layer in a large temperature difference area.
The application provides a construction process of a cement stabilized base layer in a large temperature difference area, which comprises the following steps:
s1: construction preparation: measuring and paying off, arranging a guide beam of the paver, and testing and determining the mixture ratio in a laboratory;
s2: mixing and transporting the mixture: preparing materials according to the mixture ratio provided by a laboratory, producing a mixture, and then transporting the mixture to a construction site;
s3: spreading the mixture: paving the mixture on the roadbed by a paver;
s4: compacting the mixture by a road roller;
s5: quality inspection: unqualified, repeating S4, and after qualified, beginning water-stable base course curing;
s6: after the curing is finished, constructing the expansion joint;
s61: transversely cutting the cement stabilized base layer along the highway to form expansion joints, wherein the expansion joints are uniformly distributed along the length direction of the highway;
s62: cleaning the expansion joint;
s63: filling and filling the expansion joint;
s7: and finishing the construction of the cement stabilized base.
Through adopting above-mentioned technical scheme, when steady basic unit construction of water, in the great construction site area of difference in temperature round clock, through transversely setting up the expansion joint, can adapt to expend with heat and contract with cold to steady basic unit's influence of water, can effectual steady basic unit of reduction water because expansion joint and the contraction joint that the temperature arouses, owing to set up horizontal expansion joint at steady basic unit of water, reduce road surface structure layer and appear the disease, thereby avoid handling the extra expense that causes owing to the road surface disease.
Optionally, glass fiber gratings are symmetrically laid on the top wall of the cement stabilized base layer around the expansion joint.
By adopting the technical scheme, the glass fiber grating is arranged by adopting the warp-knitted directional structure, so that the glass fiber grating has good tensile strength, tear strength and creep resistance, is arranged at the expansion joint, protects the expansion joint, reduces the deformation caused by expansion and contraction joint under the condition of high temperature or low temperature, strengthens the connection of two adjacent sections of water stabilization base layers, and ensures the relative position of the two sections.
Optionally, in S63, the expansion joint is filled with hot asphalt.
Through adopting above-mentioned technical scheme, adopt hot pitch, can protect expansion joint department, become the connecting medium, bond into whole with two adjacent water stabilization base course, increase intensity and reinforcing road surface resist the ability that the driving destroyed to make the road surface have water resistance, improve the wholeness of water stabilization base course.
Optionally, the S1 includes:
s11: leveling the road surface, and removing floating soil, accumulated water and the like on the surface of the construction road section;
s12: measuring and paying off;
s13: two sides of a road are driven into steel rods at certain intervals along the length direction, and the top ends of the steel rods are connected by using steel wire ropes to form a guide beam;
s14: the watering cart sprays water regularly to keep the ground moist.
Through adopting above-mentioned technical scheme, to the road surface clearance before the construction, improve construction quality, through the wire rope that sets up the drill rod and connect the drill rod, for the paver leads, carries on spacingly to the both sides of the steady basic unit of water, and the width of the steady basic unit of control water simultaneously through the height control of wire rope height control steady basic unit of water.
Optionally, in S2, the moisture content of the mixture during production is greater than the optimal moisture content, and during transportation, the mixture is covered with tarpaulin.
Through adopting above-mentioned technical scheme, the water content of mixture is greater than best water content when production, is convenient for offset the water yield of mixture loss in the transportation for the mixture is close to best water content when arriving the construction position, covers through the tarpaulin, avoids sunshine directly projecting in the transportation, reduces the loss rate of water content.
Optionally, the S3 includes:
s31: a slip form of the paver is placed on a guide beam, the paver is started, the guide beam guides the paver and controls the construction height of the cement stabilized base layer;
s32: the paved water stable base layer is eliminated by a specially-assigned person, and local coarse materials are shoveled and filled;
s33: rolling the paved cement stabilized base layer;
s34: and (5) performing seam treatment, and repeating S31-S33 until the construction of the water-stable base layer is completed.
Through adopting above-mentioned technical scheme, the paver is when being under construction, and the workman directly inspects and repairs in the highway section of having been under construction completion, rolls the shaping in the highway section of accomplishing the repair, and three group's actions are gone on in proper order and segmentation simultaneous working for paver, repair and roll and accomplish the construction in proper order, and the biggest utilization time improves the efficiency of construction.
Optionally, the number of the pavers is equal to that of the pavers, and when the number of the pavers is larger than one, the pavers are provided with middle guide beams along the length direction, and the number of the areas, into which the pavers are divided, of the middle guide beams and the guide beams is equal to that of the pavers; and two adjacent spreading machines work in a staggered manner from front to back, and the mixture is spread in an overlapped manner.
Through adopting above-mentioned technical scheme, the paver can stand alone one shot forming, and the stable basic unit of water is stronger more stable along horizontal wholeness, and when the road surface broad, the common construction of a plurality of pavers can provide the efficiency of construction, and does not influence each other to compensate each other.
Optionally, in S33, rolling is performed by a road roller, and pressure stabilization, light vibration, heavy ballast, and pressure stabilization face rolling are performed sequentially in a manner of first light weight, heavy weight, slow speed, and fast speed, and from low to high, and the width of 1/2 wheels is overlapped during rolling.
Through adopting above-mentioned technical scheme, when rolling steady basic unit of water, the vibration makes the granule more closely knit, from weak to strong mode, and the effect that rolls is better, avoids simultaneously causing the damage to steady basic unit of water, strengthens connecting through the compaction, improves the stability of steady basic unit of water.
Optionally, the S34 includes:
s341: cutting a new cross section along the road surface in the transverse direction;
s342: starting paving from the new cross-section position;
s343: and transversely rolling the joints by adopting a road roller.
Through adopting above-mentioned technical scheme, the handing-over cross-section surpasss after the certain time and contacts with the air and solidify at first, through cutting the handing-over cross-section again, is convenient for fuse with new mixture and is connected, reduces the gap that the handing-over produced.
In summary, the present application includes at least one of the following beneficial technical effects:
when steady basic unit of water is under construction, in the great construction site area of difference in temperature round clock, through transversely setting up the expansion joint, can adapt to expend with heat and contract with cold to the influence of steady basic unit of water, can effectual reduction steady basic unit of water because expansion joint and the contraction joint that the temperature arouses, owing to set up horizontal expansion joint at steady basic unit of water, the disease appears in the reduction road surface structure layer, thereby avoid because the extra expense that road surface disease handled and causes.
The glass fiber grating is arranged, adopts a warp knitting directional structure, has good tensile strength, tear strength and creep resistance, is arranged at the expansion joint, protects the expansion joint, reduces the deformation caused by expansion and contraction joint under the condition of high temperature or low temperature, strengthens the connection of two adjacent sections of water-stable base layers, and ensures the relative position between the two sections;
adopt hot pitch 6, can protect expansion joint department, become the connecting medium, bond into whole with two adjacent water stabilization base courses, increase intensity and reinforcing road surface resist the ability of driving destruction to make the road surface have water resistance, improve the wholeness of water stabilization base course.
Drawings
Fig. 1 is a cross-sectional view of a road surface along the longitudinal direction according to an embodiment of the present application.
Reference numerals: 1. a road bed 1; 2. a natural gravel sub-base 2; 3. a cement stabilized gravel base layer 3; 4. coarse-grained asphalt concrete 4; 5. medium grain SBS modified asphalt concrete 5; 6. 6, hot asphalt; 7. a glass fiber grid 7.
Detailed Description
The present application is described in further detail below with reference to fig. 1.
Example 1:
the embodiment of the application discloses a construction process of a water-stable base layer in a large temperature difference area.
Referring to fig. 1, the pavement structure comprises a roadbed 1, a cement stabilized gravel base layer 2 with the height of 20cm and a cement stabilized gravel base layer 3 with the height of 36cm from bottom to top, a lower sealing layer and a concrete layer from bottom to top, wherein the concrete layer comprises coarse grain type asphalt concrete 4 with the thickness of 7cm and medium grain type SBS modified asphalt concrete 5 with the thickness of 5cm from bottom to top.
A construction process of a water stable base layer in a large temperature difference area comprises the following steps:
s1: construction preparation: measuring and paying off, arranging a guide beam of the paver, and testing and determining the mixture ratio in a laboratory;
s11: leveling the road surface by a bulldozer, and removing floating soil, accumulated water and the like on the surface of the construction road section by the bulldozer to level the road surface;
s12: measuring and paying off;
s13: according to the width requirement of the cement stabilized base, steel rods are driven into the two sides of the road at intervals of 10m along the length direction of the road, the top ends of the steel rods are connected by using steel wire ropes to form a guide beam, and the height of the steel rods is the height of the cement stabilized base;
s14: watering by a watering cart at regular time to keep the ground wet;
s2: mixing and transporting the mixture: preparing materials according to the mixture ratio provided by a laboratory, producing a mixture, and then transporting the mixture to a construction site;
s21: the mixing materials are stirred in a mixing station, the mixing process is checked at regular time, and the water quantity is controlled, so that the water content of the mixing materials is larger than the optimal water content, and the water content is slightly higher than the optimal water content by 1%;
s22: the large-tonnage dumper is adopted for dumping materials, and the vehicle moves forwards and backwards during charging, so that the vehicle is convenient to fill, and the separation of mixed materials is avoided;
s23: the mixture is transported by a large-tonnage dumper, and the mixture is covered by tarpaulin in the transportation process, so that the water loss is reduced;
s3: spreading the mixture: spreading the mixture on the roadbed 1 by a spreading machine;
s31: a slip form of the paver is placed on a guide beam, the paver is started to move and move forward at a constant speed, the guide beam guides the paver and controls the construction height of the cement stabilized base layer;
s32: the paved water stable base layer is eliminated by a specially-assigned person, and a worker shovels local coarse materials and fills the coarse materials by using a mixture;
s33: rolling the paved cement stabilized base layer by a road roller, setting a separation mark, rolling in sections, sequentially stabilizing pressure, slightly vibrating, heavily ballasting and stabilizing pressure in a mode of firstly light weight and heavy weight, firstly slow speed and then fast speed, and from low to high, wherein when the road roller is used for carrying out eye rolling, the rolling position is overlapped with the last rolling position for 1/2 wheel widths;
s34: performing seam treatment, and repeating S31-S33 until the construction of the water-stable base layer is completed;
s341: cutting a new cross section along the road surface transversely, cutting the finished road section for 3m and cleaning;
s342: the spreading machine starts spreading from the position of the new cross section;
s343: transversely rolling the joints by a road roller;
s4: rolling the whole mixture again by a road roller;
s5: carrying out quality inspection on the finished pavement, unqualified inspection, repeating S4, after the inspection is qualified, starting the maintenance of the cement stabilized base layer, manually covering the geotextile above the rolled cement stabilized base layer, sprinkling water by a sprinkler at regular time, normally maintaining within at least seven days and 28 days, and forbidding vehicles to pass;
s6: after the curing is finished, constructing the expansion joint;
s61: determining the distance between expansion joints, transversely marking the expansion joints along the highway by lime, and cutting the cement stabilized base layer by a hand-push type cutting machine to form the expansion joints, wherein the expansion joints with the width of 2cm are uniformly distributed along the length direction of the highway;
s62: cleaning the mixture in the expansion joint by matching a forest fire extinguisher with the high-field water cavity;
s63: filling and filling the expansion joint with hot asphalt 6;
s64: glass fiber gratings 7 of 2m are symmetrically laid on the top wall of the cement stabilized base layer around the expansion joint and fixed through hot asphalt 6;
s7: and finishing the construction of the cement stabilized base.
The implementation principle of the construction process of the water stable base course in the large temperature difference area is as follows: this application is in when the great construction site area of difference in temperature round clock, sets up expansion joint and contraction joint that the steady basic unit of water can effectual reduction steady basic unit of water arouses because the temperature owing to set up horizontal expansion joint at steady basic unit of water, reduces the disease and appears in the road surface structure layer to avoid handling the extra expense that causes owing to the road surface disease.
Example 2:
the embodiment of the present application differs from embodiment 1 in that: the paver is provided with two pavers, wherein a middle guide beam is arranged on the pavement along the length direction, and the middle guide beam and the guide beam divide the pavement into two areas; the two spreading machines are respectively arranged in two areas, the two adjacent spreading machines work in a staggered mode from front to back, the mixture is overlapped and spread, and workers can repair the middle seams.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. A construction process of a water stable base layer in a large temperature difference area is characterized by comprising the following steps: the method comprises the following steps:
s1: construction preparation: measuring and paying off, arranging a guide beam of the paver, and testing and determining the mixture ratio in a laboratory;
s2: mixing and transporting the mixture: preparing materials according to the mixture ratio provided by a laboratory, producing a mixture, and then transporting the mixture to a construction site;
s3: spreading the mixture: spreading the mixture on the road bed (1) by a spreading machine;
s4: compacting the mixture by a road roller;
s5: quality inspection: unqualified, repeating S4, and after qualified, beginning water-stable base course curing;
s6: after the curing is finished, constructing the expansion joint;
s61: transversely cutting the cement stabilized base layer along the highway to form expansion joints, wherein the expansion joints are uniformly distributed along the length direction of the highway;
s62: cleaning the expansion joint;
s63: filling and filling the expansion joint;
s7: and finishing the construction of the cement stabilized base.
2. The construction process of the water stable base layer in the large temperature difference area according to claim 1, characterized in that: glass fiber gratings (7) are symmetrically laid on the top wall of the cement stabilized base layer on the peripheral sides of the expansion joints.
3. The construction process of the water stable base layer in the large temperature difference area according to claim 1, characterized in that: and in the S63, hot asphalt (6) is adopted to fill and fill the expansion joint.
4. The construction process of the water stable base layer in the large temperature difference area according to claim 1, characterized in that: the S1 includes:
s11: leveling the road surface, and removing floating soil, accumulated water and the like on the surface of the construction road section;
s12: measuring and paying off;
s13: two sides of a road are driven into steel rods at certain intervals along the length direction, and the top ends of the steel rods are connected by using steel wire ropes to form a guide beam;
s14: the watering cart sprays water regularly to keep the ground moist.
5. The construction process of the water stable base layer in the large temperature difference area according to claim 2, characterized in that: and S2, the water content of the mixture is greater than the optimal water content during production, and the mixture is covered by tarpaulin during transportation.
6. The construction process of the water stable base layer in the large temperature difference area according to claim 3, characterized in that: the S3 includes:
s31: a slip form of the paver is placed on a guide beam, the paver is started, the guide beam guides the paver and controls the construction height of the cement stabilized base layer;
s32: the paved water stable base layer is eliminated by a specially-assigned person, and local coarse materials are shoveled and filled;
s33: rolling the paved cement stabilized base layer;
s34: and (5) performing seam treatment, and repeating S31-S33 until the construction of the water-stable base layer is completed.
7. The construction process of the water stable base layer in the large temperature difference area according to claim 6, wherein the construction process comprises the following steps: the paving machine is provided with at least one machine, when the number of the machines is more than one, a middle guide beam is arranged on the road surface along the length direction, and the number of the areas, which are divided by the middle guide beam and the guide beam, of the road surface is the same as that of the machines; and two adjacent spreading machines work in a staggered manner from front to back, and the mixture is spread in an overlapped manner.
8. The construction process of the water stable base layer in the large temperature difference area according to claim 1, characterized in that: in the step S33, rolling is performed through a road roller, the modes of firstly light weight, heavy weight, firstly slow speed, then fast speed and from low to high are followed, pressure stabilization, light vibration, heavy weight and pressure stabilization are performed in sequence, and 1/2 wheel widths are overlapped during rolling.
9. The construction process of the water stable base layer in the large temperature difference area according to claim 1, characterized in that: the S34 includes:
s341: cutting a new cross section along the road surface in the transverse direction;
s342: starting paving from the new cross-section position;
s343: and transversely rolling the joints by adopting a road roller.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115717348A (en) * | 2022-11-28 | 2023-02-28 | 中交第四航务工程局有限公司 | Construction method for highway pavement in southern Xinjiang desert area |
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