CN113774763A - Super-thick cement stabilized macadam double-layer continuous paving construction method - Google Patents
Super-thick cement stabilized macadam double-layer continuous paving construction method Download PDFInfo
- Publication number
- CN113774763A CN113774763A CN202111236045.5A CN202111236045A CN113774763A CN 113774763 A CN113774763 A CN 113774763A CN 202111236045 A CN202111236045 A CN 202111236045A CN 113774763 A CN113774763 A CN 113774763A
- Authority
- CN
- China
- Prior art keywords
- base layer
- layer
- upper base
- double
- lower base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004568 cement Substances 0.000 title claims abstract description 44
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims description 33
- 230000007480 spreading Effects 0.000 claims description 28
- 238000003892 spreading Methods 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 15
- 239000010959 steel Substances 0.000 claims description 15
- 239000010426 asphalt Substances 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 238000005056 compaction Methods 0.000 claims description 9
- 230000036541 health Effects 0.000 claims description 8
- 238000010409 ironing Methods 0.000 claims description 6
- 238000009736 wetting Methods 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 5
- 239000002131 composite material Substances 0.000 claims description 4
- 238000005507 spraying Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000000754 repressing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 143
- 239000011229 interlayer Substances 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 description 10
- 238000009415 formwork Methods 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E01C19/12—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 distributing granular or liquid materials
- E01C19/16—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 distributing granular or liquid materials for applying or spreading liquid materials, e.g. bitumen slurries
-
- 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
- E01C19/22—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 consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
- E01C19/286—Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll
-
- 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
- E01C19/50—Removable forms or shutterings for road-building purposes; Devices or arrangements for forming individual paving elements, e.g. kerbs, in situ
- E01C19/502—Removable forms or shutterings, e.g. side forms; Removable supporting or anchoring means therefor, e.g. stakes
Abstract
The invention discloses a double-layer continuous paving construction method for ultra-large-thickness cement stabilized macadam, which converts the traditional three-layer layered paving mode into two-layer continuous paving, controls the length of each paving section to be 80-100m, ensures that the rolling control of an upper base layer is completed before the water stability initial setting of a lower base layer, continuously paves and forms at one time, improves the interlayer connection quality, changes a water stability structure layer from three layers into one layer, and improves the integral structural strength of the water stability structure layer.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a double-layer continuous paving construction method for ultra-large-thickness cement stabilized macadam.
Background
At present, most of roads and urban roads built in China are of surface layer structures of inorganic binder base layers and asphalt binders, wherein the inorganic binder base layers are mostly cement-stabilized gravel layers. The cement stabilized macadam consists of aggregate, graded macadam, and a mortar volume comprising water and cementitious material consisting of cement and mix. The existing cement stabilized gravel layer is paved by three layers in a layered mode, namely the cement stabilized gravel layer comprises a bottom base layer, a lower base layer and an upper base layer, the bottom base layer, the lower base layer and the upper base layer are paved layer by layer, after paving of each layer is completed, health maintenance cloth covers the bottom base layer, water is sprayed for health maintenance, the health maintenance period is seven days, and the construction period is longer.
Disclosure of Invention
The invention aims to solve the technical problem of providing a double-layer continuous paving construction method for ultra-large-thickness cement stabilized macadam, which changes the traditional three-layer layered paving mode into two-layer continuous paving, so that a water-stable structure layer is changed from three layers into one layer, the integral structural strength of the water-stable structure layer is improved, the construction time is shortened, and the construction efficiency is improved.
The technical scheme of the invention is as follows:
a double-layer continuous paving construction method for ultra-large-thickness cement stabilized macadam specifically comprises the following steps:
(1) calculating the mixing proportion of the cement stabilized macadam mixture, mixing the components of the cement stabilized macadam mixture to obtain a homogeneous cement stabilized macadam mixture, and then performing construction lofting on a lower bearing layer;
(2) the template comprises an upper base layer side template and a lower base layer side template, wherein the lower base layer side template is firstly installed and fixedly connected with a plurality of side template supporting stand columns driven into a lower bearing layer;
(3) and paving a lower base layer: the width of the water-stable base layer of the lower base layer is 11.12 meters, two super-thick spreading machines are adopted to combine and jointly spread, the length of each spreading section is controlled to be 80-100m, the loose spreading thickness of the lower base layer is 36.4cm, the rotating speed of the two super-thick spreading machines is controlled to be 1000 r/min-1200 r/min, the amplitude is adjusted to be 5mm, and the spreading speed is controlled to be 1.5-2 m/min;
(4) and rolling the lower base layer: the lower base layer rolling comprises initial pressing, re-pressing and final pressing, wherein the initial pressing adopts a double-steel-wheel roller to perform static pressure after an ultra-thick paver, the initial pressing rolling speed is controlled to be 1.5-1.7 km/h, the re-pressing adopts a 26t single-steel-wheel vibration roller, the re-pressing rolling speed is controlled to be 1.8-2.2 km/h, the final pressing adopts a rubber-wheel roller to perform rolling and surface folding, the rolling speed is controlled to be 1.5-1.7 km/h, the final pressing is used for closing surface microcracks and loosening, the roller in three stages ensures that wheel tracks are overlapped 1/2, and the length of a rolling section is controlled to be 30-40 m;
(5) after the section of the lower base layer repressing area is completely rolled, erecting an upper base layer side template on the lower base layer, supporting the upper base layer side template and the lower base layer side template by using the same side template supporting upright post, then after all rolling work of the lower base layer, namely the step (4), is completed, starting to move back to an upper base layer paving starting position, namely a position reserved for a seam with the upper construction base layer section, and repeatedly carrying out the step (3) on the two super-thick pavers to pave the upper base layer, wherein the loose paving thickness of the upper base layer is 35.1 cm;
(6) repeating the step (4) to perform the rolling operation of the upper base layer, and completing the control of the paving and rolling of the upper base layer before the initial setting of the cement of the lower base layer;
(7) after the upper base layer is rolled, spreading the emulsified asphalt permeable layer oil on the surface of the upper base layer before the surface of the upper base layer becomes dry and is not hardened, and preserving, wherein the spreading amount is not less than 1.5kg/m2。
The construction lofting in the step (1) specifically comprises the operations of measurement lofting, lower bearing layer cleaning, lower bearing layer water spraying wetting and lofting line hanging.
The upper base layer side template and the lower base layer side template are both made of 25# b channel steel, the waist thickness of the channel steel is 9mm, and 2cm square steel is welded at the upper part of the channel steel to meet the thickness requirement; the side form supporting upright column is selected
The steel pipe stand, among a plurality of side form support posts, the interval between two adjacent side form support posts is 2 m.
The ironing plates of the two super-thick pavers are respectively a six-meter double-vibration reinforced ironing plate and a five-meter double-vibration reinforced ironing plate.
The two super-thick pavers are creep RP953T super-thick pavers, the rated power is 213KW, the maximum paving thickness is 500mm, the basic paving width is 2.5m, the maximum paving width is 12m, and the hopper capacity is 15 t.
The initial pressure in the step (4) is subjected to static pressure once by adopting a Danaike CC6200 double-steel-wheel road roller; the composite pressing is performed in a echelon mode by adopting two creep XS263 single-steel-wheel vibratory rollers, the composite pressing is performed firstly for weak vibration and then for strong vibration for four times, the working weight of the creep XS263 single-steel-wheel vibratory roller is 26 tons, the compaction width is 2.13m, and the maximum exciting force is 405 KN; the final pressure is achieved by adopting a creep XP303 rubber-wheel road roller for rolling and compacting, the maximum working weight of the creep XP303 rubber-wheel road roller is 30.3t, the front four and the rear five of tires are arranged, and the compacting width is 2.36 m.
After the lower base layer is rolled and formed, cement paste is sprayed on the surface of the lower base layer, the cohesiveness of the upper base layer and the lower base layer is improved, the integrity of the pavement base layer is ensured, the water cement ratio of the cement paste is 1:1, and the upper base layer is paved and rolled after the cement paste is sprayed.
And after the upper base layer is rolled, before the emulsified asphalt permeable layer is sprayed with oil and is kept in health, carrying out vaporific watering wetting on the upper base layer.
The invention has the advantages that:
(1) the traditional three-layer layered paving mode is changed into two-layer continuous paving, the length of each paving section is controlled to be 80-100m, the rolling control of an upper base layer is ensured to be completed before the water stability of a lower base layer is initially set, the continuous paving and forming are carried out once, and the interlayer connection quality is improved, so that the water stability structure layer is changed into one layer from three layers, and the integral structural strength of the water stability structure layer is improved;
(2) the invention reduces the sprinkling maintenance work of the bottom base layer and the lower base layer for covering the geotextile, and saves the maintenance cost;
(3) the upper base layer and the lower base layer are paved and formed at one time, so that the no-load working time of continuous transition of construction machinery is saved;
(4) the paver of the invention selects a creep RP953T super-thick paver, the maximum paving thickness of which is 50cm and 36.4cm, proves the paving feasibility of the water-stable large thickness, and the power of the paver is improved by about 57.3 percent compared with the three-layer layered paving;
(5) the invention adopts a creep XS263 single-steel-wheel vibratory roller for re-compaction, the working weight is 26t, the maximum exciting force can reach 405KN, the mechanical performance can meet the requirements of key quality control points such as large-thickness paving compaction and the like, and the water stabilizing compaction quality is ensured;
(6) the emulsified asphalt prime coat oil is adopted to spray the surface of the upper base layer, the emulsified asphalt prime coat oil is mainly used for ensuring that the inside of the base layer has enough moisture after the emulsified asphalt is demulsified, and an asphalt oil film is formed after the emulsified asphalt is mainly used for demulsification, so that a good water sealing effect is achieved, the self-moisture content of the inside of the water-stabilized base layer is used for self-maintenance, the traditional covering water spraying maintenance of the upper base layer and the lower base layer is replaced, and the hidden quality danger of the water-stabilized maintenance caused by untimely manual maintenance and insufficient covering is avoided;
(7) the cement paste is spread between the upper base layer and the lower base layer, so that the cohesiveness of the upper base layer and the lower base layer is enhanced, and the integrity of the pavement base layer is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the template of the present invention.
Reference numerals: 1-upper base layer side formwork, 2-lower base layer side formwork, 3-side formwork supporting upright posts, 4-upper base layer and 5-lower base layer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A double-layer continuous paving construction method for ultra-large-thickness cement stabilized macadam specifically comprises the following steps:
(1) calculating the mixing proportion of the cement stabilized macadam mixture, mixing the components of the cement stabilized macadam mixture to obtain a homogeneous cement stabilized macadam mixture, and then sequentially performing construction lofting operations such as measurement lofting, lower bearing layer cleaning, lower bearing layer water spraying wetting, lofting hanging and the like on a lower bearing layer;
(2) the template is installed, the template comprises an upper base layer side template 1 and a lower base layer side template 2, the lower base layer side template 2 is installed firstly and is fixedly connected with a plurality of side template supporting upright posts 3 which are driven into a lower bearing layer (see figure 1); the upper base layer side formwork 1 and the lower base layer side formwork 2 both adopt 25# b channel steel, the waist thickness of the channel steel is 9mm, and 2cm square steel is welded at the upper part of the channel steel to meet the thickness requirement; the support upright post 3 of the side form is selected
The steel tube column is characterized in that the distance between two adjacent side mold support columns 3 in the plurality of side mold support columns 3 is 2 m;
(3) and paving a lower base layer: the width of the water-stable base layer of the lower base layer is 11.12 meters, two creep RP953T super-thick spreading machines are adopted to combine double-machine combined spreading, the screed plates of the two super-thick spreading machines are respectively a six-meter double-vibration reinforced screed plate and a five-meter double-vibration reinforced screed plate, the rated power of the two super-thick spreading machines is 213KW, the maximum spreading thickness is 500mm, the basic spreading width is 2.5m, the maximum spreading width is 12m, the hopper capacity is 15t, the length of each spreading section is controlled to be 80-100m, the loose spreading thickness of the lower base layer is 36.4cm (the compaction thickness is 28cm and the loose spreading coefficient is 1.3), the rotating speeds of the two super-thick spreading machines are controlled to be 1000 r/min-1200 r/min, the amplitude is adjusted to be 5mm, and the spreading speed is controlled to be 1.5-2 m/min;
(4) and rolling the lower base layer: the rolling of the lower base layer comprises primary pressing, secondary pressing and final pressing, wherein the primary pressing adopts a Danaike CC6200 double-steel-wheel roller for static pressing once, the primary pressing rolling speed is controlled to be 1.5-1.7 km/h, the secondary pressing adopts two creep XS263 single-steel-wheel vibratory rollers for rolling in a echelon, the secondary pressing firstly carries out weak vibration once and then carries out strong vibration four times, the working weight of the creep XS263 single-steel-wheel vibratory roller is 26 tons, and the compaction width is 2.13m, the maximum exciting force is 405KN, the re-pressing rolling speed is controlled to be 1.8-2.2 km/h, the final pressing is performed by adopting a creep XP303 rubber-wheel road roller to roll and recover the surface, the maximum working weight of the creep XP303 rubber-wheel road roller is 30.3t, the front four and the rear five of the tire and the compaction width are 2.36m, the rolling speed is controlled to be 1.5-1.7 km/h, the final pressing is used for closing surface microcracks and loosening, the road roller in three stages ensures wheel track overlapping 1/2, and the length of the rolling section is controlled to be 30-40 m;
(5) after the lower base layer is rolled and formed, cement paste is sprayed on the surface of the lower base layer, so that the cohesiveness of the upper base layer and the lower base layer is improved, the integrity of the pavement base layer is ensured, the water cement ratio of the cement paste is 1:1, and the upper base layer is paved and rolled after the cement paste is sprayed;
(6) and paving a lower base layer: erecting an upper base layer side template 1 on a lower base layer 5, supporting the upper base layer side template 1 and a lower base layer side template 2 by using the same side template supporting upright post 3 (see figure 1), then after all rolling work of the lower base layer, namely step (4), is completed, starting to retreat to an upper base layer paving starting position, namely a joint reserved position with a previous construction base layer section, and repeatedly carrying out upper base layer paving by the two super-thick pavers in step (3), wherein the loose paving thickness of the upper base layer 4 is 35.1cm (the compaction thickness is 27cm and the loose paving coefficient is 1.3);
(7) repeating the step (4) to perform the rolling operation of the upper base layer, and completing the control of the paving and rolling of the upper base layer before the initial setting of the cement of the lower base layer;
(8) after the upper base layer is rolled, the upper base layer is subjected to vaporific watering and wetting to avoid high temperatureThe emulsified asphalt may carry away the water necessary for hydration heat during emulsion breaking, and then spreading and curing the emulsified asphalt permeable layer oil before the surface of the upper base layer becomes dry slightly and is not hardened, wherein the spreading amount is not less than 1.5kg/m2；
(9) Traffic control and maintenance: immediately closing traffic after the step (8), and strictly prohibiting sharp turning or sharp braking, wherein the traffic can be limited by a construction vehicle after the health-preserving period is ended, and the speed is less than 15 km/h; and (4) closing traffic during the health preserving period, setting a warning sign, and forbidding any vehicle to pass during the health preserving period.
Coring after seven days of health preservation, complete core sample, good two-layer connection effect (same core), tight and firm combination and improvement of the overall performance of the pavement structure.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A double-layer continuous paving construction method for ultra-large-thickness cement stabilized macadam is characterized by comprising the following steps: the method specifically comprises the following steps:
(1) calculating the mixing proportion of the cement stabilized macadam mixture, mixing the components of the cement stabilized macadam mixture to obtain a homogeneous cement stabilized macadam mixture, and then performing construction lofting on a lower bearing layer;
(2) the template comprises an upper base layer side template and a lower base layer side template, wherein the lower base layer side template is firstly installed and fixedly connected with a plurality of side template supporting stand columns driven into a lower bearing layer;
(3) and paving a lower base layer: the width of the water-stable base layer of the lower base layer is 11.12 meters, two super-thick spreading machines are adopted to combine and jointly spread, the length of each spreading section is controlled to be 80-100m, the loose spreading thickness of the lower base layer is 36.4cm, the rotating speed of the two super-thick spreading machines is controlled to be 1000 r/min-1200 r/min, the amplitude is adjusted to be 5mm, and the spreading speed is controlled to be 1.5-2 m/min;
(4) and rolling the lower base layer: the lower base layer rolling comprises initial pressing, re-pressing and final pressing, wherein the initial pressing adopts a double-steel-wheel roller to perform static pressure after an ultra-thick paver, the initial pressing rolling speed is controlled to be 1.5-1.7 km/h, the re-pressing adopts a 26t single-steel-wheel vibration roller, the re-pressing rolling speed is controlled to be 1.8-2.2 km/h, the final pressing adopts a rubber-wheel roller to perform rolling and surface folding, the rolling speed is controlled to be 1.5-1.7 km/h, the final pressing is used for closing surface microcracks and loosening, the roller in three stages ensures that wheel tracks are overlapped 1/2, and the length of a rolling section is controlled to be 30-40 m;
(5) after the section of the lower base layer repressing area is completely rolled, erecting an upper base layer side template on the lower base layer, supporting the upper base layer side template and the lower base layer side template by using the same side template supporting upright post, then after all rolling work of the lower base layer, namely the step (4), is completed, starting to move back to an upper base layer paving starting position, namely a position reserved for a seam with the upper construction base layer section, and repeatedly carrying out the step (3) on the two super-thick pavers to pave the upper base layer, wherein the loose paving thickness of the upper base layer is 35.1 cm;
(6) repeating the step (4) to perform the rolling operation of the upper base layer, and completing the control of the paving and rolling of the upper base layer before the initial setting of the cement of the lower base layer;
(7) after the upper base layer is rolled, spreading the emulsified asphalt permeable layer oil on the surface of the upper base layer before the surface of the upper base layer becomes dry and is not hardened, and preserving, wherein the spreading amount is not less than 1.5kg/m2。
2. The double-layer continuous paving construction method for the ultra-large-thickness cement stabilized macadam according to claim 1, which is characterized in that: the construction lofting in the step (1) specifically comprises the operations of measurement lofting, lower bearing layer cleaning, lower bearing layer water spraying wetting and lofting line hanging.
3. The double-layer continuous paving construction method for the ultra-large-thickness cement stabilized macadam according to claim 1, which is characterized in that: the upper base layer side template and the lower base layer side template are both made of 25# b channel steel, the waist thickness of the channel steel is 9mm, and 2cm square steel is welded at the upper part of the channel steel to meet the thickness requirement; the side form supporting upright column is selected
The steel pipe stand, among a plurality of side form support posts, the interval between two adjacent side form support posts is 2 m.
4. The double-layer continuous paving construction method for the ultra-large-thickness cement stabilized macadam according to claim 1, which is characterized in that: the ironing plates of the two super-thick pavers are respectively a six-meter double-vibration reinforced ironing plate and a five-meter double-vibration reinforced ironing plate.
5. The double-layer continuous paving construction method for the ultra-large-thickness cement stabilized macadam according to claim 1, which is characterized in that: the two super-thick pavers are creep RP953T super-thick pavers, the rated power is 213KW, the maximum paving thickness is 500mm, the basic paving width is 2.5m, the maximum paving width is 12m, and the hopper capacity is 15 t.
6. The double-layer continuous paving construction method for the ultra-large-thickness cement stabilized macadam according to claim 1, which is characterized in that: the initial pressure in the step (4) is subjected to static pressure once by adopting a Danaike CC6200 double-steel-wheel road roller; the composite pressing is performed in a echelon mode by adopting two creep XS263 single-steel-wheel vibratory rollers, the composite pressing is performed firstly for weak vibration and then for strong vibration for four times, the working weight of the creep XS263 single-steel-wheel vibratory roller is 26 tons, the compaction width is 2.13m, and the maximum exciting force is 405 KN; the final pressure is achieved by adopting a creep XP303 rubber-wheel road roller for rolling and compacting, the maximum working weight of the creep XP303 rubber-wheel road roller is 30.3t, the front four and the rear five of tires are arranged, and the compacting width is 2.36 m.
7. The double-layer continuous paving construction method for the ultra-large-thickness cement stabilized macadam according to claim 1, which is characterized in that: after the lower base layer is rolled and formed, cement paste is sprayed on the surface of the lower base layer, the cohesiveness of the upper base layer and the lower base layer is improved, the integrity of the pavement base layer is ensured, the water cement ratio of the cement paste is 1:1, and the upper base layer is paved and rolled after the cement paste is sprayed.
8. The double-layer continuous paving construction method for the ultra-large-thickness cement stabilized macadam according to claim 1, which is characterized in that: and after the upper base layer is rolled, before the emulsified asphalt permeable layer is sprayed with oil and is kept in health, carrying out vaporific watering wetting on the upper base layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236045.5A CN113774763A (en) | 2021-10-22 | 2021-10-22 | Super-thick cement stabilized macadam double-layer continuous paving construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111236045.5A CN113774763A (en) | 2021-10-22 | 2021-10-22 | Super-thick cement stabilized macadam double-layer continuous paving construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113774763A true CN113774763A (en) | 2021-12-10 |
Family
ID=78873411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111236045.5A Pending CN113774763A (en) | 2021-10-22 | 2021-10-22 | Super-thick cement stabilized macadam double-layer continuous paving construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113774763A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210095485A1 (en) * | 2019-09-30 | 2021-04-01 | Carrol Distributing & Construction Supply, Inc. | Quick curb bracket |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020141822A1 (en) * | 2001-03-28 | 2002-10-03 | Sterner Carl L. | Apparatus and method for cold paving |
| CN205637522U (en) * | 2016-03-12 | 2016-10-12 | 中天建设集团有限公司 | A side form support system for terrace construction |
| CN106758641A (en) * | 2016-12-05 | 2017-05-31 | 中铁五局集团有限公司 | The big thickness cement stabilized macadam subbase construction method of big width |
| CN208151819U (en) * | 2018-03-28 | 2018-11-27 | 杭州江润科技有限公司 | Base even spreads formwork system |
| CN211006269U (en) * | 2019-10-30 | 2020-07-14 | 中交基础设施养护集团有限公司 | Side form supporting device for pavement base construction |
| CN112695584A (en) * | 2020-12-25 | 2021-04-23 | 中铁八局集团建筑工程有限公司 | Construction method for paving two sides of cement-stabilized gravel layer for one-step forming |
-
2021
- 2021-10-22 CN CN202111236045.5A patent/CN113774763A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020141822A1 (en) * | 2001-03-28 | 2002-10-03 | Sterner Carl L. | Apparatus and method for cold paving |
| CN205637522U (en) * | 2016-03-12 | 2016-10-12 | 中天建设集团有限公司 | A side form support system for terrace construction |
| CN106758641A (en) * | 2016-12-05 | 2017-05-31 | 中铁五局集团有限公司 | The big thickness cement stabilized macadam subbase construction method of big width |
| CN208151819U (en) * | 2018-03-28 | 2018-11-27 | 杭州江润科技有限公司 | Base even spreads formwork system |
| CN211006269U (en) * | 2019-10-30 | 2020-07-14 | 中交基础设施养护集团有限公司 | Side form supporting device for pavement base construction |
| CN112695584A (en) * | 2020-12-25 | 2021-04-23 | 中铁八局集团建筑工程有限公司 | Construction method for paving two sides of cement-stabilized gravel layer for one-step forming |
Non-Patent Citations (1)
| Title |
|---|
| 平国超: "水泥稳定碎石基层双层连续摊铺施工工艺与质量控制", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210095485A1 (en) * | 2019-09-30 | 2021-04-01 | Carrol Distributing & Construction Supply, Inc. | Quick curb bracket |
| US11802382B2 (en) * | 2019-09-30 | 2023-10-31 | Tuf-N-Lite, LLC | Quick curb bracket |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106120524B (en) | A kind of road construction method on pavement and non-motorized lane intersection | |
| CN106592368A (en) | Asphalt pavement paving no-cutting construction method | |
| CN105256689A (en) | Construction method of water retaining and cooling asphalt pavement | |
| CN111809474A (en) | Garden road color asphalt pervious concrete construction method | |
| CN110258236A (en) | A kind of high-performance steel slag road surface and its construction method | |
| CN108867231A (en) | A kind of antiskid type asphalt pavement construction technique | |
| CN110565469B (en) | Rapid overlapping and paving method of road delayed coagulation type cement stable aggregate | |
| CN113774763A (en) | Super-thick cement stabilized macadam double-layer continuous paving construction method | |
| US3625121A (en) | Apparatus for producing supporting layers or road surfaces | |
| CN104631266B (en) | Normal-temperature asphalt pavement cold-mixed and cold-paved construction technology | |
| CN105948595A (en) | Anti-segregation skeleton compactness cement-stabilized macadam mixture and application and paving methods thereof | |
| CN114016430B (en) | Asphalt concrete bridge deck pavement method | |
| CN106245546A (en) | A kind of corrugated steel Pipe rack | |
| CN215405359U (en) | Lane pavement structure | |
| CN206591384U (en) | Bituminous concrete prefabricated section and assembly type road surface | |
| CN109468904A (en) | A kind of pitch composite seal coat construction method for road in airport | |
| CN112095394A (en) | Composite pavement with excellent drainage function and construction method thereof | |
| CN211171471U (en) | High-performance steel slag pavement | |
| CN112195710A (en) | Construction method for medium-grained asphalt concrete upper layer in Gobi desert area | |
| CN216999138U (en) | Compound ultra-thin top facing structure of mating formation | |
| CN107858896A (en) | A kind of electric plane shakes press | |
| CN111794026B (en) | Construction method of main body structure of underpass of expressway | |
| CN111455766B (en) | Regenerated asphalt concrete structure for road and construction process thereof | |
| CN114808586B (en) | Construction method for asphalt pavement anti-cracking in severe cold region | |
| CN218951888U (en) | Colored permeable whole pavement paving device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211210 |
|
| RJ01 | Rejection of invention patent application after publication |