CN111979868B - Construction method of pavement surface double-layer steel mesh concrete - Google Patents
Construction method of pavement surface double-layer steel mesh concrete Download PDFInfo
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- CN111979868B CN111979868B CN202010858333.3A CN202010858333A CN111979868B CN 111979868 B CN111979868 B CN 111979868B CN 202010858333 A CN202010858333 A CN 202010858333A CN 111979868 B CN111979868 B CN 111979868B
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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
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
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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
- E01C11/00—Details of pavings
- E01C11/16—Reinforcements
- E01C11/18—Reinforcements for cement concrete pavings
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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
- E01C23/04—Devices for laying inserting or positioning reinforcing elements or dowel bars with or without joint bodies; Removable supports for reinforcing or load transfer elements; Devices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcements
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Abstract
A construction method of double-layer reinforced mesh concrete for a pavement surface layer comprises the following steps: dividing a concrete pouring area into independent bins, filling the bins and leaning against the bins, and correspondingly selecting operation equipment; carrying out a mixing ratio test to determine the mixing ratio of the concrete; selecting test sections and constructing in sections, mixing concrete in each construction section according to the concrete mixing proportion, respectively layering and paving the concrete and placing reinforcing mesh sheets, and then vibrating the concrete, collecting the surface and roughening the surface; re-measuring the position of the reinforcing mesh, and determining the placement position of the reinforcing mesh in the construction process; detecting the breaking strength, and coring to check the internal compaction condition of the concrete; and collecting the construction process parameters, comparing and analyzing the construction process parameters, determining the concrete paving thickness of each layer, the placement position of the reinforcing mesh, the distance between the vibrating rods, the advancing speed of the vibrator, the back vibration mode and the back vibration time, and performing overall construction according to the determined result. The invention has high construction efficiency and stable construction quality.
Description
Technical Field
The invention belongs to the field of airport runway construction, and particularly relates to a pavement surface double-layer reinforced mesh concrete construction method.
Background
Airport construction is the infrastructure project of national vigorous development at present, and the project through examining and approving is about more than 40 at present, and the pavement surface layer double-deck reinforcing bar net piece concrete engineering is used for high-fill airport mostly. In the prior art, the double-layer reinforced net piece concrete engineering of the pavement surface layer adopts mechanical spreading concrete, the reinforced net pieces are manually placed, the manual vibration construction process is inaccurate in placement of the reinforced net pieces, concrete quality is unstable due to easy vibration leakage and over vibration, and quality problems such as honeycomb pitted surfaces and dog holes occur.
Disclosure of Invention
The invention aims to solve the problems of low construction quality, time and labor waste of pavement surface double-layer reinforced mesh concrete engineering in the prior art, and provides a pavement surface double-layer reinforced mesh concrete construction method, which can realize quick paving, accurately place reinforced meshes, has high construction efficiency and uniform and stable construction quality, and is economic and capable of saving construction period.
In order to achieve the above object, the present invention has the following aspects:
a construction method of double-layer reinforced mesh concrete for a pavement surface layer comprises the following steps:
dividing a concrete pouring area into an independent bin, a filling bin and a leaning bin, and correspondingly selecting operation equipment;
carrying out a mixing ratio test to determine the mixing ratio of the concrete;
selecting test sections and constructing in sections, mixing concrete in each construction section according to the concrete mixing proportion, respectively layering and paving the concrete and placing reinforcing mesh sheets, and then vibrating the concrete, collecting the surface and roughening the surface;
re-measuring the position of the reinforcing mesh, and determining the placement position of the reinforcing mesh in the construction process;
detecting the breaking strength, and coring to check the internal compaction condition of the concrete;
and collecting the construction process parameters, comparing and analyzing the construction process parameters, determining the concrete paving thickness of each layer, the placement position of the reinforcing mesh, the distance between the vibrating rods, the advancing speed of the vibrator, the back vibration mode and the back vibration time, and performing overall construction according to the determined result.
Preferably, the method for selecting the working device is as follows: when the first layer of concrete and the second layer of concrete are paved by filling and leaning against the bins, the paving excavator works on the concrete slab, and a wheel excavator is adopted for paving to avoid damaging the concrete slab; the paving excavator in the bin adopts a crawler excavator to avoid disturbance to the reinforcing mesh inside the concrete; the self-discharging type vibrator is selected for the vibrating table, the frequency of the vibrating rods is not less than 200HZ, the power of a single vibrating rod is not less than 1.1KW, and the distance between the vibrating rods is not more than 0.5 m.
Preferably, a 4.5m × 90m area is taken as a test section, construction is performed in four sections, the size of each section is 4.5m × 22.5m, and the division mode is as follows:
the paving thickness of the first section of the first layer of concrete is 11cm, and the distance between the first layer of steel mesh sheet and the bottom surface of the first layer of concrete is 11.75 cm; paving the second layer of concrete to a thickness of 14cm, wherein the distance between the second layer of steel mesh sheets and the bottom surface of the first layer of concrete is 25.75 cm;
the paving thickness of the first layer of concrete of the second section is 12cm, and the distance between the first layer of steel mesh sheet and the bottom surface of the first layer of concrete is 12.75 cm; paving the second layer of concrete to a thickness of 14cm, wherein the distance between the second layer of steel mesh sheets and the bottom surface of the first layer of concrete is 26.75 cm;
the third section of the first layer of concrete is paved with the thickness of 13cm, and the distance between the first layer of reinforcing mesh sheet and the bottom surface of the first layer of concrete is 13.75 cm; paving the second layer of concrete to a thickness of 14cm, wherein the distance between the second layer of steel mesh sheets and the bottom surface of the first layer of concrete is 27.75 cm;
the paving thickness of the fourth section of the first layer of concrete is 14cm, and the distance between the first layer of steel mesh sheets and the bottom surface of the first layer of concrete is 14.75 cm; the second layer of concrete is paved with the thickness of 14cm, and the second layer of steel mesh reinforcement is 28.75cm away from the bottom surface of the first layer of concrete.
Preferably, two excavators are adopted in the concrete paving process, one excavator is used for paving the first layer of concrete and the second layer of concrete, and the other excavator is used for paving the third layer of concrete; after the first layer of concrete is paved, the truck-mounted crane is matched with manual work to place the first layer of reinforcing mesh, then the second layer of concrete is paved, the truck-mounted crane is matched with manual work to place the second layer of reinforcing mesh, and the excavator is used for paving the third layer of concrete.
Preferably, after the concrete is vibrated, the surface is vibrated by adopting the wooden row tamping;
then, the surface is closed for three times, including two times of surface closing of the wood mould and one time of surface closing of the steel mould;
the roughening is carried out before the initial setting of the concrete.
Preferably, the positions of the reinforcing mesh sheets at the test sections are measured, the sinking data of the reinforcing mesh sheets in the vibrating process are collected, and the flexural strength is detected after 28 days.
Preferably, the reinforcing mesh is prepared in a steel wire binding spot welding connection mode.
Compared with the prior art, the invention has the following beneficial effects: the construction is carried out by selecting the test sections and carrying out segmentation, concrete is mixed in each construction section according to the concrete mixing proportion, concrete paving and reinforcing mesh placing are carried out in a layering mode respectively, and then concrete vibrating, surface folding and galling are carried out. If the placement position of the steel mesh is inaccurate, the effect of the steel mesh is inevitably weakened, and the expected effect cannot be achieved. Therefore, the determination of the positions of the steel mesh sheets through the test section is a key process of double-layer steel mesh sheet concrete construction of the pavement surface layer. The vibration of the double-layer reinforced net concrete is a key process for controlling the concrete construction quality, and the vibration mode is determined to be another key process for the double-layer reinforced net concrete construction of the pavement surface layer. Compared with the traditional construction method of mechanical paving, manual steel bar net placing and manual vibration, the construction method of the double-layer steel bar net piece of the pavement surface layer can quickly pave, accurately place the steel bar net piece and greatly reduce manual operation, thereby reducing errors, improving the concrete paving quality of the double-layer steel bar net piece of the pavement surface layer and eliminating common defects of the construction quality. The invention has the advantages of high construction efficiency, uniform and stable construction quality, economy and construction period saving.
Drawings
FIG. 1 is a flow chart of a construction method of double-layer reinforced mesh concrete for a pavement surface layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the construction method of the double-layer reinforced mesh concrete for the pavement surface layer provided by the invention comprises the following steps:
1. construction preparation;
the equipment is selected, and the double-layer reinforced mesh concrete of the pavement surface layer is poured and divided into an independent bin, a filling bin and a leaning bin. The concrete spreading and digging machines for filling the bin and paving the first layer and the second layer by the concrete of the bin need to operate on a concrete slab, and a wheel type digging machine needs to be adopted for spreading, so that concrete plates are prevented from being damaged. The paving excavator in the bin is suitable to be a crawler excavator, the ground area of a crawler plate is large, and disturbance to a reinforcing mesh in concrete can be avoided to the maximum extent. The self-discharging type vibrator is selected for the vibrating table, the frequency of the vibrating rods is not less than 200HZ, the power of a single vibrating rod is not less than 1.1KW, and the distance between the vibrating rods is not more than 0.5 m.
The invention relates to a test device, which needs to test raw materials, concrete strength, compactness and the like, takes test numbers as the basis of concrete construction, and needs to be provided with test instruments such as screening equipment, a Weibo consistometer, an oven, a press machine and the like.
2. Measuring and paying off;
and controlling the construction range, determining bin position division according to plate division of a construction design drawing, and measuring the elevation of a base layer and the position of a template.
3. Testing;
the raw materials, cement, sand and broken stones are detected, and the detection result must meet the requirements of design and specification.
And (5) carrying out a mixing ratio test to determine the mixing ratio of the concrete.
4. Dividing a test section;
a region of 4.5 m.times.90 m was selected as the test section. The reaction is carried out in four stages, each 4.5 m.times.22.5 m.
The paving thickness of the first section of the first layer of concrete is 11cm, and the distance between the first layer of steel mesh sheet and the bottom surface of the first layer of concrete is 11.75 cm; the second layer of concrete is paved with the thickness of 14cm, and the distance between the second layer of steel mesh sheets and the bottom surface of the first layer of concrete is 25.75 cm.
The paving thickness of the first layer of concrete of the second section is 12cm, and the distance between the first layer of steel mesh sheet and the bottom surface of the first layer of concrete is 12.75 cm; the second layer of concrete is paved with the thickness of 14cm, and the second layer of steel mesh reinforcement is 26.75cm away from the bottom surface of the first layer of concrete.
The third section of the first layer of concrete is paved with the thickness of 13cm, and the distance between the first layer of reinforcing mesh sheet and the bottom surface of the first layer of concrete is 13.75 cm; the second layer of concrete is paved with the thickness of 14cm, and the distance between the second layer of steel mesh sheets and the bottom surface of the first layer of concrete is 27.75 cm.
The paving thickness of the fourth section of the first layer of concrete is 14cm, and the distance between the first layer of steel mesh sheets and the bottom surface of the first layer of concrete is 14.75 cm; the second layer of concrete is paved with the thickness of 14cm, and the second layer of steel mesh reinforcement is 28.75cm away from the bottom surface of the first layer of concrete.
And mixing concrete in each construction section according to the concrete mixing proportion, and paving the concrete layer by layer respectively.
5. Concrete paving and reinforcing mesh placing;
the concrete is paved by adopting two excavators, wherein one excavator paves the first layer and the second layer of concrete, and the other excavator paves the third layer of concrete.
6. Kneading, collecting and napping the pulp;
and after the concrete is vibrated, tamping the surface of the concrete by adopting a wooden row.
Then, the surface is closed for three times, two times of wood moulds and one time of steel moulds.
The roughening is carried out before the initial setting of the concrete.
7. Checking and detecting;
and measuring the position of the reinforcing mesh. And measuring the positions of the reinforcing mesh sheets at each test section, and collecting the sinking data of the reinforcing mesh sheets in the vibrating process. And determining the placement position of the large-area construction reinforcing mesh. And after 28 days, carrying out flexural strength detection and coring to check the internal compaction condition of the concrete, and determining the distance between the vibrating rods, the advancing speed of the vibrator, the vibration returning mode and the vibration returning time. And carrying out destructive test on the individual plates to further check the positions of the reinforcing mesh and the internal quality of the concrete.
8. Determining parameters;
and (4) collecting the construction parameters of the steps 4, 5, 6 and 7, analyzing and comparing the construction parameters, and determining the concrete paving thickness of each layer, the position of the reinforcing mesh, the distance between the vibrating rods, the advancing speed of the vibrator, the back vibration mode and the time.
In most expansive soil high-fill airport projects, because of the continuity of high-fill settlement, in order to eliminate the post-influence caused by the high-fill settlement to the maximum extent, the high-fill airport field engineering generally adopts a steel bar mesh. If the placement position of the steel mesh is inaccurate, the effect of the steel mesh is inevitably weakened, and the expected effect cannot be achieved. Therefore, the determination of the positions of the steel mesh sheets through the test section is a key process of double-layer steel mesh sheet concrete construction of the pavement surface layer. The method is characterized in that the paving thickness of the first layer of concrete, the position of the reinforcing mesh, the paving thickness of the second layer of concrete and the position of the reinforcing mesh of the second layer are determined through a test section. The second point is to determine the distance between the vibrating rods of the self-propelled vibrator, the mode of vibration and the time according to the test section. The vibration of the double-layer reinforced mesh concrete is a key process for controlling the concrete construction quality, and the determination of the vibration mode is another key process for the double-layer reinforced mesh concrete construction of the pavement surface layer. And determining the placement position of the reinforcing mesh sheet by the sinking amount of the reinforcing mesh sheet after vibration according to the test data. And (5) observing whether the honeycomb, the pitted surface and the like exist or not through appearance inspection after the mold is removed. Core drilling and sampling, and determining the vibrating process according to destructive test data.
9. And carrying out large-area construction according to the test parameters.
According to the method, a small excavator is adopted to pave a first layer of concrete, a truck-mounted crane is matched with manual work to place a first layer of reinforcing mesh, a wheel excavator is adopted to pave a second layer of concrete, the truck-mounted crane is matched with manual work to place a second layer of reinforcing mesh, the excavator is used for paving a third layer of concrete, after a test is completed, the sinking amount of the reinforcing mesh in the concrete vibrating process is measured, and the placing position of the reinforcing mesh in the construction process is further determined. And finally, adjusting the distance between the vibration rods of the row-type vibration table, the running speed and the back vibration mode. Through tests, data acquisition and efficiency analysis, comparison is carried out, and pavement surface double-layer reinforced mesh concrete pavement is carried out by adopting a wheel excavator and a truck-mounted crane in cooperation with manual work; the pavement surface concrete paving construction process is adjusted, the pavement surface double-layer reinforcing mesh concrete paving quality is improved, meanwhile, the labor investment is greatly reduced, the pavement surface concrete construction efficiency is improved, and the construction period and the cost are saved.
Examples
Concrete of pavement surface layer of engineering of station level of Shaanxi Ankang airport construction project3. The traditional method is to manually place a reinforcing mesh and manually vibrate. By adopting the double-layer reinforced mesh concrete construction of the pavement surface layer, the labor force can be greatly saved, the construction efficiency can be improved, and the construction period can be shortened. The construction cost is saved by 46.5 ten thousand yuan by adopting the construction method of the double-layer reinforced mesh concrete of the pavement surface layer from the aspect of construction cost, and the construction period is shortened by 35 days. Preparation ofThe construction cost and the period comparison are shown in table 1.
TABLE 1 budget costing comparison table
| Construction scheme | Man-made construction method | Double-layer reinforced mesh concrete construction of pavement surface layer |
| Construction period | 75 days | 40 days |
| Construction cost | 180 ten thousand yuan | 133.5 ten thousand yuan |
The concrete of the engineering pavement surface layer of the airport building project runway of Shaanxi' an kang is about 2.15 ten thousand meters3. The traditional method is to manually place a reinforcing mesh and manually vibrate. By adopting the double-layer reinforced mesh concrete construction of the pavement surface layer, the labor force can be greatly saved, the construction efficiency can be improved, and the construction period can be shortened. By adopting the construction method of the double-layer reinforced mesh concrete of the pavement surface layer from the aspect of construction cost, the construction cost is saved by 68 ten thousand yuan, and the construction period is shortened by 52 days. The budget construction cost and the construction period are compared and shown in the table 2.
TABLE 2 budget costing comparison table
| Construction scheme | Man-made construction method | Double-layer reinforced mesh concrete construction of pavement surface layer |
| Construction period | 110 days | 58 days |
| Construction cost | 260 ten thousand yuan | 192 ten thousand yuan |
Carrying out safety technology bottom crossing on operators before the construction of the double-layer reinforced mesh concrete of the pavement surface layer; the method comprises the steps that safety personnel and quality inspectors supervise and check in geotechnical tests, detection tests, test sections and construction processes, various test data are recorded in time, and the science and technology quality part finally determines the paving thickness of concrete on each layer, the position of a reinforcing mesh, the distance between vibrating rods, the advancing speed of a vibrator, the back vibration mode and the time through data analysis and summary. The steel bar net piece adopts a steel wire binding spot welding connection mode, in the manufacturing process, binding is firm, and welding machine current is controlled during spot welding to prevent the steel bar from being damaged. In the hoisting process of the steel mesh, the hoisting point is properly selected, the length of the steel wire rope meets the requirement, and the steel mesh is prevented from being deformed and damaged in the hoisting process.
The paving thickness is strictly controlled in the concrete paving process, and after paving is completed, the surface of concrete is required to be smooth, so that the steel bar net piece is ensured to be stably placed. When the second layer and the third layer of concrete are unloaded, the unloading vehicle and the excavator need to walk on the paved concrete, and are strictly forbidden to directly walk on the reinforcing mesh, so that the deformation and the displacement of the reinforcing mesh are prevented. The bucket of the excavator should be strictly controlled in the paving process to prevent the bucket from colliding with the reinforcing mesh. The reinforcing mesh is ensured not to deform and displace. During the warehouse filling construction, the first layer and the second layer of concrete should be paved by adopting a wheel excavator standing on the finished concrete slab. The damage to the finished concrete caused by the crawler-type excavator is avoided. The distance between the vibrating rods should be strictly controlled in the vibrating process, and the vibrating rods should be inserted into concrete from the grids of the reinforcing mesh to vibrate. The re-oscillation should be carried out strictly according to the mode and time of the re-oscillation determined by the test. And the construction quality of the concrete is ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and it should be understood by those skilled in the art that the technical solution can be modified and replaced by a plurality of simple modifications and replacements without departing from the spirit and principle of the present invention, and these modifications and replacements also fall within the protection scope covered by the claims.
Claims (5)
1. A construction method of double-layer steel mesh concrete of a pavement surface layer is characterized by comprising the following steps:
dividing a concrete pouring area into independent bins, filling the bins and leaning against the bins, and correspondingly selecting operation equipment;
carrying out a mixing ratio test to determine the mixing ratio of the concrete;
selecting test sections and constructing in sections, mixing concrete in each construction section according to the concrete mixing proportion, respectively layering and paving the concrete and placing reinforcing mesh sheets, and then vibrating the concrete, collecting the surface and roughening the surface;
re-measuring the position of the reinforcing mesh, and determining the placement position of the reinforcing mesh in the construction process;
detecting the breaking strength, and coring to check the internal compaction condition of the concrete;
collecting the construction process parameters, comparing and analyzing the construction process parameters, determining the concrete paving thickness of each layer, the placement position of the reinforcing mesh, the distance between the vibrating rods, the advancing speed of the vibrator, the back vibration mode and the time, and performing integral construction according to the determined parameters;
the concrete spreading process is carried out by adopting two excavators, wherein one excavator is used for spreading the first layer of concrete and the second layer of concrete, and the other excavator is used for spreading the third layer of concrete; after the first layer of concrete is paved, a truck-mounted crane is matched with manual work to place a first layer of reinforcing mesh, then the second layer of concrete is paved, the truck-mounted crane is matched with manual work to place a second layer of reinforcing mesh, and an excavator is used for paving a third layer of concrete;
after the concrete is vibrated, tamping the surface of the concrete by adopting a wooden row;
then, the surface is closed for three times, including two times of surface closing of the wood mould and one time of surface closing of the steel mould;
the roughening is carried out before the initial setting of the concrete.
2. The construction method of the double-layer reinforced mesh concrete for the pavement surface layer according to claim 1, characterized by comprising the following steps:
the mode of selecting the operation equipment is as follows: when the first layer of concrete and the second layer of concrete are paved by filling and leaning against the bins, the paving excavator works on the concrete slab, and a wheel excavator is adopted for paving to avoid damaging the concrete slab; the paving excavator in the bin adopts a crawler excavator to avoid disturbance to the reinforcing mesh inside the concrete; the self-discharging type vibrator is selected for the vibrating table, the frequency of the vibrating rods is not less than 200HZ, the power of a single vibrating rod is not less than 1.1KW, and the distance between the vibrating rods is not more than 0.5 m.
3. The construction method of the double-layer reinforced mesh concrete of the pavement surface layer according to claim 1, characterized in that a 4.5m x 90m area is taken as a test section, construction is carried out in four sections, the size of each section is 4.5m x 22.5m, and the division mode is as follows:
the paving thickness of the first section of the first layer of concrete is 11cm, and the distance between the first layer of steel mesh sheet and the bottom surface of the first layer of concrete is 11.75 cm; paving the second layer of concrete to a thickness of 14cm, wherein the distance between the second layer of steel mesh sheets and the bottom surface of the first layer of concrete is 25.75 cm;
the paving thickness of the first layer of concrete of the second section is 12cm, and the distance between the first layer of steel mesh sheet and the bottom surface of the first layer of concrete is 12.75 cm; paving the second layer of concrete to a thickness of 14cm, wherein the distance between the second layer of steel mesh sheets and the bottom surface of the first layer of concrete is 26.75 cm;
the third section of the first layer of concrete is paved with the thickness of 13cm, and the distance between the first layer of reinforcing mesh sheet and the bottom surface of the first layer of concrete is 13.75 cm; paving the second layer of concrete to a thickness of 14cm, wherein the distance between the second layer of steel mesh sheets and the bottom surface of the first layer of concrete is 27.75 cm;
the paving thickness of the fourth section of the first layer of concrete is 14cm, and the distance between the first layer of steel mesh sheets and the bottom surface of the first layer of concrete is 14.75 cm; the second layer of concrete is paved with the thickness of 14cm, and the second layer of steel mesh reinforcement is 28.75cm away from the bottom surface of the first layer of concrete.
4. The construction method of the double-layer reinforced mesh concrete for the pavement surface layer according to claim 1, characterized by comprising the following steps: and measuring the positions of the reinforcing mesh sheets at the test sections, collecting the sinking data of the reinforcing mesh sheets in the vibrating process, and detecting the flexural strength after 28 days.
5. The construction method of the double-layer reinforced mesh concrete for the pavement surface layer according to claim 1, characterized by comprising the following steps:
the reinforcing mesh is prepared by adopting a steel wire binding spot welding connection mode.
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|---|---|---|---|---|
| EP0505010A1 (en) * | 1991-03-22 | 1992-09-23 | N.V. Bekaert S.A. | A method for reinforcing a covering layer on ground |
| JP2014025319A (en) * | 2012-07-30 | 2014-02-06 | Taiheiyo Cement Corp | Pavement concrete and manufacturing method for the same |
| CN108580758A (en) * | 2018-06-04 | 2018-09-28 | 中国水利水电第五工程局有限公司 | A kind of double layer bar plate machining device |
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| US8636941B1 (en) * | 2012-09-25 | 2014-01-28 | Romeo Ilarian Ciuperca | Methods of making concrete runways, roads, highways and slabs on grade |
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|---|---|---|---|---|
| EP0505010A1 (en) * | 1991-03-22 | 1992-09-23 | N.V. Bekaert S.A. | A method for reinforcing a covering layer on ground |
| JP2014025319A (en) * | 2012-07-30 | 2014-02-06 | Taiheiyo Cement Corp | Pavement concrete and manufacturing method for the same |
| CN108580758A (en) * | 2018-06-04 | 2018-09-28 | 中国水利水电第五工程局有限公司 | A kind of double layer bar plate machining device |
Non-Patent Citations (1)
| Title |
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| 机场道面工程水泥混凝土施工过程质量控制要点分析;梁川等;《科技创新导报》;20181111;对比文件1第9页右列第1-50行 * |
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