CN113250030A - Perfusion and blade coating type semi-flexible pavement and construction method - Google Patents
Perfusion and blade coating type semi-flexible pavement and construction method Download PDFInfo
- Publication number
- CN113250030A CN113250030A CN202110612108.6A CN202110612108A CN113250030A CN 113250030 A CN113250030 A CN 113250030A CN 202110612108 A CN202110612108 A CN 202110612108A CN 113250030 A CN113250030 A CN 113250030A
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- Prior art keywords
- pavement
- mortar
- asphalt mixture
- slurry
- pouring
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- 238000000576 coating method Methods 0.000 title claims abstract description 23
- 239000011248 coating agent Substances 0.000 title claims abstract description 22
- 238000010276 construction Methods 0.000 title claims abstract description 17
- 230000010412 perfusion Effects 0.000 title claims description 9
- 239000010426 asphalt Substances 0.000 claims abstract description 47
- 239000002002 slurry Substances 0.000 claims abstract description 40
- 239000000203 mixture Substances 0.000 claims abstract description 31
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 28
- 238000007790 scraping Methods 0.000 claims abstract description 10
- 239000011159 matrix material Substances 0.000 claims abstract description 8
- 239000011083 cement mortar Substances 0.000 claims description 9
- 239000011800 void material Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 2
- 239000008199 coating composition Substances 0.000 claims description 2
- 239000003086 colorant Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000004043 dyeing Methods 0.000 abstract description 9
- 239000000428 dust Substances 0.000 abstract description 8
- 239000010410 layer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Classifications
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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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/182—Aggregate or filler materials, except those according to E01C7/26
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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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/26—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders mixed with other materials, e.g. cement, rubber, leather, fibre
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a pouring and scraping type semi-flexible pavement, wherein a matrix asphalt mixture with a large gap is paved on the pavement, slurry inside the pavement is poured on the pavement, and mortar is scraped on the surface of the pavement. Simultaneously discloses a construction method of the pavement: paving a large-gap asphalt mixture pavement on a construction road section; pouring internal slurry into the paved large-gap asphalt mixture; coating mortar on the surface of the pavement; and after the pavement is maintained, the traffic is opened. The invention solves the problems of early dust emission, overhigh dyeing cost and uneven surface structure caused by the fact that the traditional pouring type semi-flexible pavement is poured with single-variety slurry to the road surface. The surface mortar and the internal slurry are bonded before initial setting to form a whole, and the surface of the mortar almost has no floating ash, so that no dust is raised after traffic is opened. If the dyeing requirement exists, only the surface mortar needs to be dyed, and the dyeing cost is reduced by more than 90%. The mortar does not flow, is not sensitive to the slope of the road surface, and the surface structure can be comprehensively and uniformly realized.
Description
Technical Field
The invention relates to a semi-flexible asphalt pavement and a construction method of the asphalt pavement, in particular to a perfusion and blade coating type semi-flexible pavement and a construction method.
Background
The pouring type semi-flexible pavement is a composite material pavement formed by pouring a cement-based slurry material into a matrix of a large-gap asphalt mixture. The road surface has the advantages of both asphalt road surface and cement road surface, and is mainly used for special road sections such as road level intersections, BRT lanes, long and large longitudinal slopes and the like.
According to technical regulations on road pouring type semi-flexible pavements (T \ CECS G: D51-01-2019), pouring type semi-flexible pavements are divided into single-layer structures and double-layer structures, wherein the single-layer structures are formed by pouring single variety of slurry to a road surface at one time, the double-layer structures are formed by paving and rolling two layers of parent large-gap asphalt materials, and the single variety of slurry is poured to the road surface at one time after the two layers of asphalt materials are formed. The following problems exist in pouring a single variety of grout into a road surface:
the slurry surface floating slurry can cause serious dust raising after the traffic is opened, thereby causing environmental pollution;
for items where there is a special demand for the color of the pulp, the cost of pulp dyeing is too high.
Due to the high fluidity of the slurry, the road surface structure is not uniform after construction, the slurry on the surface of a high point of the road surface is not full enough, the surface structure is too large, and the asphalt material is easy to peel off; the road surface has too much low-point slurry, too small surface structure and insufficient skid resistance.
Disclosure of Invention
In order to better solve the problems of the existing pouring type semi-flexible pavement, the invention provides a pouring and blade coating type semi-flexible pavement and a construction method thereof, which can solve the problems of early dust emission, overhigh dyeing cost and uneven surface structure caused by pouring single variety of slurry into a road surface of the traditional pouring type semi-flexible pavement.
The technical scheme for realizing the purpose of the invention is as follows: pour into + blade coating formula semi-flexible pavement, its characterized in that: the large-gap matrix asphalt mixture is paved on a road surface, the internal slurry is poured into the large-gap asphalt mixture, and the surface of the road surface is coated with mortar.
The porosity of the large-void matrix asphalt mixture is 22-28%, the coarse aggregate is basalt or diabase, and the asphalt is SBS modified asphalt, high-viscosity asphalt or rubber asphalt.
The internal slurry is sulphoaluminate cement mortar, the fluidity is 10-16 s, the initial setting time is less than 1h, the 3-hour compressive strength is greater than 10MPa, and the 3-d dry shrinkage rate is not more than 0.3%.
The surface mortar is sulphoaluminate cement mortar, and different colors are dyed according to requirements.
The surface mortar is sulphoaluminate cement mortar, the slump expansion degree is 160-180 mm, the initial setting time is less than 1h, the 3-hour compressive strength is greater than 10MPa, and the 3d shrinkage rate is not more than 0.3%.
The invention relates to a construction method of a perfusion and blade coating type semi-flexible pavement, which comprises the following steps:
paving a large-gap asphalt mixture pavement on a construction road section;
and 4, opening traffic after pavement maintenance.
Further, in the step 2, the pouring of the internal slurry is carried out after the temperature of the large-gap asphalt mixture is reduced to the ambient temperature, the slurry is poured from the lowest point of the large-gap asphalt mixture road surface to the highest point, and the height difference from the lowest slurry point liquid level to the road surface is 1 cm.
And further, scraping and coating the surface of the large-gap asphalt mixture pavement which is filled with the internal slurry in the step 3, wherein the scraping and coating of the mortar are carried out before the initial setting of the internal slurry, and then brushing the surface structure.
Further, the paving of the large-gap asphalt mixture is carried out by carrying out static pressure on a double steel wheel for 3-5 times.
Further, the pavement curing time is 2-3 hours.
The invention solves the problems of early dust emission, overhigh dyeing cost and uneven surface structure caused by the fact that the traditional pouring type semi-flexible pavement is poured with single-variety slurry to the road surface. The surface mortar and the internal slurry are bonded before initial setting to form a whole, and the surface of the mortar almost has no floating ash, so that no dust is raised after traffic is opened. If the dyeing requirement exists, only the surface mortar needs to be dyed, and the dyeing cost is reduced by more than 90%. The mortar does not flow, is not sensitive to the slope of the road surface, and the surface structure can be comprehensively and uniformly realized.
Drawings
FIG. 1 is a cross-sectional view of a poured and knife-coated semi-flexible pavement according to the present invention. In the figure: mark 1 is a large void asphalt mix, mark 2 is an internal slurry, and mark 3 is a surface mortar.
Detailed Description
The present invention will be further explained with reference to the following examples and the accompanying drawings.
As shown in figure 1, the invention relates to a pouring and scraping type semi-flexible pavement and a construction method. The pouring and scraping type semi-flexible pavement consists of three parts, namely a large-gap matrix asphalt mixture 1, internal slurry 2 and surface mortar 3. The large-gap matrix asphalt mixture 1 has a void ratio of 25%, the coarse aggregate is basalt, and the asphalt is high-viscosity asphalt. The internal slurry 2 is sulphoaluminate cement mortar, the fluidity is 13.8s, the initial setting time is 50min, the 3-hour compressive strength is 14.8MPa, and the 3d dry shrinkage is 0.24%. The surface mortar 3 is sulphoaluminate cement mortar, the mortar is dyed black, the slump expansion degree is 165mm, the initial setting time is 46min, the 3-hour compressive strength is 18.7MPa, and the 3d shrinkage rate is 0.17%.
The invention relates to a perfusion and blade coating type semi-flexible pavement, which is constructed according to the following steps:
And 4, opening traffic after the pavement is cured for 3 hours, and keeping no dust after the traffic is opened.
The pouring and blade coating type semi-flexible pavement and the construction method can solve the problems of early dust raising, over-high dyeing cost and uneven surface structure caused by slurry floating on the surface of the traditional pouring type semi-flexible pavement.
Claims (10)
1. The utility model provides a fill + blade coating formula semi-flexible pavement which characterized in that: the large-gap matrix asphalt mixture is paved on a road surface, the internal slurry is poured into the large-gap asphalt mixture, and the surface of the road surface is coated with mortar.
2. The perfusion + blade coating type semi-flexible pavement according to claim 1, characterized in that: the porosity of the large-void matrix asphalt mixture is 22-28%, the coarse aggregate is basalt or diabase, and the asphalt is SBS modified asphalt, high-viscosity asphalt or rubber asphalt.
3. The perfusion + blade coating type semi-flexible pavement according to claim 1, characterized in that: the internal slurry is sulphoaluminate cement mortar, the fluidity is 10-16 s, the initial setting time is less than 1h, the 3-hour compressive strength is greater than 10MPa, and the 3-d dry shrinkage rate is not more than 0.3%.
4. The perfusion + blade coating type semi-flexible pavement according to claim 1, characterized in that: the surface mortar is sulphoaluminate cement mortar, and different colors are dyed according to requirements.
5. The perfusion + blade coating type semi-flexible pavement according to claim 1, characterized in that: the surface mortar is sulphoaluminate cement mortar.
6. The poured + blade coated semi-flexible pavement according to claim 5, characterized in that: the slump expansion of the sulphoaluminate cement mortar is 160-180 mm, the initial setting time is less than 1h, the 3-hour compressive strength is greater than 10MPa, and the 3d shrinkage rate is not more than 0.3%.
7. A method for constructing a pouring and scraping type semi-flexible pavement according to any one of claims 1 to 5, comprising the following steps:
paving a large-gap asphalt mixture pavement on a construction road section;
step 2, pouring internal slurry into the paved large-gap asphalt mixture;
step 3, scraping and coating mortar on the surface of the large-gap asphalt mixture pavement after the internal slurry is poured;
and 4, opening traffic after pavement maintenance.
8. The construction method of the pouring and blade coating type semi-flexible pavement according to claim 7, which is characterized in that: in the step 2, the pouring of the internal slurry is carried out after the temperature of the large-gap asphalt mixture is reduced to the ambient temperature, the slurry is poured from the lowest point of the large-gap asphalt mixture pavement to the highest point, and the height difference from the lowest slurry point to the pavement surface is 1 cm.
9. The construction method of the pouring and blade coating type semi-flexible pavement according to claim 7, which is characterized in that: and 3, scraping and coating the mortar on the surface of the large-gap asphalt mixture pavement after the internal slurry is poured, wherein the mortar needs to be uniformly scraped before the internal slurry is initially set, and then brushing the surface structure.
10. The construction method of the pouring and blade coating type semi-flexible pavement according to claim 7, which is characterized in that: the paving large-gap asphalt mixture is rolled by adopting double steel wheels for static pressure for 3-5 times; the pavement health preserving time is 2-3 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110612108.6A CN113250030A (en) | 2021-06-02 | 2021-06-02 | Perfusion and blade coating type semi-flexible pavement and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110612108.6A CN113250030A (en) | 2021-06-02 | 2021-06-02 | Perfusion and blade coating type semi-flexible pavement and construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113250030A true CN113250030A (en) | 2021-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110612108.6A Pending CN113250030A (en) | 2021-06-02 | 2021-06-02 | Perfusion and blade coating type semi-flexible pavement and construction method |
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| Country | Link |
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| CN (1) | CN113250030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920532A (en) * | 2022-04-22 | 2022-08-19 | 浙江工业大学 | Full-industrial solid waste mortar and application thereof in construction of poured semi-flexible composite pavement |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451335A (en) * | 2008-12-16 | 2009-06-10 | 中铁四局集团有限公司 | High adhesion pavement construction method |
| CN105256689A (en) * | 2015-09-28 | 2016-01-20 | 重庆建工住宅建设有限公司 | Construction method of water retaining and cooling asphalt pavement |
| CN107805016A (en) * | 2017-10-27 | 2018-03-16 | 广西横县恒丰建材有限责任公司 | Production method of direct scraping and penetrating adhesive mortar for concrete surface |
| CN110512483A (en) * | 2019-08-23 | 2019-11-29 | 广东五华二建工程有限公司 | Pavement construction method |
| CN110590300A (en) * | 2019-09-25 | 2019-12-20 | 国家电网有限公司 | Super early strength cement-based grouting material and production method thereof |
| CN212670171U (en) * | 2020-05-26 | 2021-03-09 | 北京中咨恒通工程咨询有限公司 | grouting pavement |
-
2021
- 2021-06-02 CN CN202110612108.6A patent/CN113250030A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101451335A (en) * | 2008-12-16 | 2009-06-10 | 中铁四局集团有限公司 | High adhesion pavement construction method |
| CN105256689A (en) * | 2015-09-28 | 2016-01-20 | 重庆建工住宅建设有限公司 | Construction method of water retaining and cooling asphalt pavement |
| CN107805016A (en) * | 2017-10-27 | 2018-03-16 | 广西横县恒丰建材有限责任公司 | Production method of direct scraping and penetrating adhesive mortar for concrete surface |
| CN110512483A (en) * | 2019-08-23 | 2019-11-29 | 广东五华二建工程有限公司 | Pavement construction method |
| CN110590300A (en) * | 2019-09-25 | 2019-12-20 | 国家电网有限公司 | Super early strength cement-based grouting material and production method thereof |
| CN212670171U (en) * | 2020-05-26 | 2021-03-09 | 北京中咨恒通工程咨询有限公司 | grouting pavement |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114920532A (en) * | 2022-04-22 | 2022-08-19 | 浙江工业大学 | Full-industrial solid waste mortar and application thereof in construction of poured semi-flexible composite pavement |
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Application publication date: 20210813 |
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