CN210797145U - Noise-reduction drainage polymer modified porous concrete pavement structure - Google Patents
Noise-reduction drainage polymer modified porous concrete pavement structure Download PDFInfo
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- CN210797145U CN210797145U CN201920551422.6U CN201920551422U CN210797145U CN 210797145 U CN210797145 U CN 210797145U CN 201920551422 U CN201920551422 U CN 201920551422U CN 210797145 U CN210797145 U CN 210797145U
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Abstract
The utility model discloses a drainage polymer modified cellular concrete pavement structure of making an uproar falls, include from last to the polymer modified cellular cement concrete surface course of laying in proper order down, the basic unit that permeates water, graded broken stone basic unit and road bed, graded broken stone basic unit bottom is provided with one or more slot, has laid the pipe of permeating water in the slot. On the premise of ensuring the required strength performance and durability of the road pavement, the road pavement has better noise reduction and drainage performance and skid resistance. The method can effectively relieve the urban waterlogging problem which is urgently needed to be solved, is beneficial to the implementation of the sponge city plan in China, and has important significance for the construction of green cities in the future.
Description
Technical Field
The utility model relates to an urban construction technical field, concretely relates to drainage polymer that makes an uproar modified porous concrete pavement structure falls.
Background
The road surface of the road is mainly divided into two categories of asphalt pavement and cement concrete pavement. The traditional common asphalt pavement has the problems of poor temperature stability, low pavement strength, easy generation of tracks and the like, and the high-quality asphalt materials required for constructing the asphalt pavement in China are relatively short and high in price, so that the large-scale pavement of the high-grade asphalt pavement is influenced. The cement resources of China are very rich, the continuous production and the use amount for many years are at the top of the world, and the cement with various purposes and types can be produced in large quantity, so that the cost of the common cement concrete pavement is much lower than that of an asphalt pavement, and the cement pavement has high strength and good durability, therefore, most of the pavements in China are cement concrete pavements. Although ordinary cement concrete pavements have certain advantages, the defects of serious water damage, difficult repair, easy urban waterlogging and the like seriously affect the wide application of the ordinary cement concrete pavements in municipal roads. In recent years, urban inland inundation disasters occur frequently, great inconvenience is brought to the lives of vast citizens, and the concept of sponge city is brought forward to cope with the increasingly frequent urban inland inundation disasters. As an important part of urban drainage, how to effectively improve the drainage capacity of roads and quickly drain accumulated water on the road surface, so that rainwater falling on the roads can penetrate into the ground to the maximum extent, concentrated drainage is reduced, and how to effectively relieve urban inland inundation is a major problem to be solved by urban road builders at present.
In recent years, novel pavement porous concrete with good water permeability and high strength is gradually popularized and applied in China. Porous concrete, also known as macroporous concrete or porous poor concrete, is poor concrete prepared by mixing cement, coarse aggregate and water, and because of no sand or little sand, the mixture has more and larger pores after hardening. The drainage pavement or the pavement drainage base course paved by the porous concrete material can quickly remove precipitation on the pavement through pores on the surface and inside the drainage pavement by virtue of the unique skeleton gap structure, reduce urban inland inundation and prolong the service life of the pavement; due to the porous structure, a large amount of noise can be absorbed, so that the porous concrete also has the noise reduction function and is suitable for being applied to municipal roads. However, porous concrete also has many defects, such as low compressive and flexural strength, poor toughness, small deformation capacity, etc., which seriously affect the large-scale application in road engineering, and thus, is currently used in many projects, such as parking lots, sidewalks, river bank revetments, etc.
Disclosure of Invention
The to-be-solved technical problem of the utility model is, to the above-mentioned defect that prior art exists, provide a drainage polymer modified cellular concrete pavement structure of making an uproar falls, under the prerequisite of guaranteeing required strength property of road surface and durability, still have better drainage performance, the skid resistance of making an uproar of falling. The method can effectively relieve the urban waterlogging problem which is urgently needed to be solved, is beneficial to the implementation of the sponge city plan in China, and has important significance for the construction of green cities in the future.
The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be:
the utility model provides a make an uproar drainage polymer modified porous concrete pavement structure falls, includes from last polymer modified porous cement concrete surface course, the basic unit that permeates water, graded broken stone basic unit and the road bed of laying down in proper order, and graded broken stone basic unit bottom is provided with one or more slot, has laid the pipe that permeates water in the slot.
According to the technical scheme, the surface of the permeable pipe is wrapped with a layer of permeable geotextile.
According to the technical scheme, a layer of waterproof geotextile is laid on the top surface of the roadbed.
According to the technical scheme, the kerbstone is arranged on one side or two sides of the polymer modified porous cement concrete surface layer, the fine stone concrete foundation is arranged at the bottom of the kerbstone, and the outer end of the permeable pipe extends out of the roadbed and is butted with a sunken green belt.
According to the technical scheme, the thickness of the polymer modified porous cement concrete surface layer is 200-300 mm, and the porosity is 14-30%.
According to the technical scheme, the permeable base layer is coarse sand, the thickness of the permeable base layer is 30-80 mm, and the particle diameter of the permeable base layer is 0.5-1 mm.
According to the technical scheme, the thickness of the graded broken stone base layer is 200-300 mm.
According to the technical scheme, the height and the bottom width of the groove are both 100-150 mm, the groove is trapezoidal or rectangular, the water permeable pipe is longitudinally laid in the groove along the length direction of the groove, and the diameter of the water permeable pipe is 80-120 mm.
According to the technical scheme, the gradient of the water permeable pipe is the same as that of the groove and is 1% -2%, the arrangement directions of the water permeable pipe and the groove are perpendicular to the central line of the road surface, and the distance between two adjacent water permeable pipes and the distance between two adjacent grooves are 10-30 m.
According to the technical scheme, the elevation of the roadbed top surface is lowest at the position of the permeable pipe and gradually rises from inside to outside, and the gradient is 1% -2%.
The utility model discloses following beneficial effect has:
the concrete is used as a surface layer material, so that the price is low and the material is convenient to obtain; the polymer is added into the concrete, so that the mechanical properties such as the compressive strength, the breaking strength and the like of the concrete can be obviously enhanced, and the service life of the pavement is prolonged; the design of the pavement structure is reasonable, polymer modified porous cement concrete is adopted as a surface layer, coarse sand and graded broken stone are adopted as a pavement base layer, and a permeable pipe and geotextile are arranged at the bottom of the base layer, so that a brand new permeable pavement structure is finally formed; the polymer modified porous cement concrete surface layer has more interconnected gaps, the porosity is 14-30%, and compared with the common concrete surface layer, the polymer modified porous cement concrete surface layer has better drainage performance, noise reduction performance and surface skid resistance performance; coarse sand and graded broken stones are used as a base course of the pavement and form a drainage structure together with the surface course, so that rainwater can rapidly permeate into the base course; the water permeable pipe is arranged at the bottom of the base layer, so that rainwater permeating into the base layer can be quickly discharged into the sunken green belt, and water accumulation on the road surface is prevented; the surface of the permeable pipe is wrapped with a layer of permeable geotextile, so that rainwater can smoothly permeate the geotextile and enter the permeable pipe on one hand, and in addition, sundries can be prevented from blocking the permeable holes; the waterproof geotextile arranged on the top of the roadbed can prevent rainwater penetrating into the base layer from entering the roadbed to reduce the bearing capacity of the roadbed, and can also enable the rainwater to smoothly flow into the groove permeable pipe to smoothly discharge the rainwater; the application range is wider, and the device is not only suitable for urban low-grade motor vehicle lanes and non-motor vehicle lanes, but also suitable for urban squares, parks, green lanes, sidewalks and the like.
Drawings
FIG. 1 is a schematic structural diagram of a noise-reducing drainage polymer modified cellular concrete pavement structure according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
in the figure, 1-polymer modified porous cement concrete surface course, 2-permeable base course, 3-graded broken stone base course, 4-foundation, 5-permeable pipe, 6-permeable geotextile, 7-drainage ditch groove, 8-waterproof geotextile, 9-kerbstone, 10-fine stone concrete foundation and 11-sunken green belt.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1-2, the utility model provides an embodiment noise reduction and drainage polymer modified porous concrete pavement structure, include from last to the polymer modified porous cement concrete surface course 1 of laying in proper order down, basic unit 2 permeates water, gradation rubble basic unit 3 and road bed 4, gradation rubble basic unit 3 bottom is provided with one or more slot 7, has laid the pipe 5 of permeating water in the slot 7.
Further, the surface of the permeable pipe 5 is wrapped with a layer of permeable geotextile 6.
Further, a layer of waterproof geotextile 8 is laid on the top surface of the roadbed 4.
Furthermore, one side or two sides of the polymer modified porous cement concrete surface layer 1 are provided with kerbs 9, fine stone concrete foundations 10 are arranged between the bottoms of the kerbs 9 and the permeable base layer 2, the outer ends of the permeable pipes 5 extend out of the roadbed 4 and are butted with sunken green belts 11, rainwater entering the base layer is discharged into the sunken green belts 11 through the permeable pipes 5, and the sunken green belts are arranged on the roadbed 4 outside the graded broken stone base layer 3.
Further, the kerbstone 9 is a C30 kerbstone, and the fine-stone concrete foundation 10 is a C15 fine-stone concrete foundation.
Further, the thickness of the polymer modified porous cement concrete surface layer 1 is 200-300 mm, the porosity is 14-30%, the cement is ordinary portland cement with a grade of more than 32.5R, the polymer emulsion adopted by the polymer modified porous cement concrete surface layer 1 is styrene-butadiene emulsion (DB-1), and the poly-cement ratio is 5-15%.
Further, the permeable base layer 2 is coarse sand, the thickness is 30-80 mm, and the particle diameter is 0.5-1 mm.
Furthermore, the thickness of the graded broken stone base layer 3 is 200-300 mm,
further, the height and the bottom width size of slot are 100~150mm, and the slot shape is trapezoidal or rectangle, and the pipe 5 of permeating water vertically lays in the slot along slot length direction, is horizontal arrangement, and the diameter of the pipe of permeating water is 80~120 mm.
Furthermore, the slope of the water permeable pipe is the same as the slope of the groove and is 1% -2%, the arrangement directions of the water permeable pipe and the groove are perpendicular to the central line of the road surface, and the distance between every two adjacent water permeable pipes and the distance between every two adjacent grooves are 10-30 m.
Furthermore, the elevation of the top surface of the roadbed 4 is lowest at the position of the permeable pipe, the elevation is gradually increased from inside to outside perpendicular to the permeable pipe, and the gradient is 1% -2%; and laying a layer of waterproof geotextile on the top surface of the roadbed.
Furthermore, the material of the permeable pipe is PVC.
The utility model provides an in the embodiment one: as shown in fig. 1 and fig. 2, the road surface structure of the utility model is a polymer modified specification porous cement concrete surface layer 1, a permeable base layer 2, a graded broken stone base layer 3 and a roadbed 4 from top to bottom in sequence. 3 bottoms of graded broken stone basic unit set up slot 7, and PVC is laid to the 7 bottoms of slot and is permeated water pipe 5, permeates water pipe 5 surface parcel one deck geotechnological cloth 6 that permeates water, and 4 top surfaces of road bed are laid the waterproof geotechnological cloth 8 of one deck, and 1 one side of polymer modified porous cement concrete surface course is equipped with curb 9, and curb 9 bottom is equipped with C15 fine stone concrete basis 10, and the rainwater that gets into the basic unit permeates water pipe 5 through PVC and discharges into in the formula greenbelt 11 that sinks.
According to an embodiment of the utility model, 1 surface course thickness 200mm of polymer modified porous cement concrete surface course, the porosity is 25%, and P.O 42.5 ordinary portland cement is selected for the cement, and butylbenzene emulsion (DB-1) is selected for the polymer emulsion, gathers grey ratio 10%, and the nominal particle size of aggregate is 9.5mm, and the maximum particle size is no more than 13.2mm, and the aggregate gradation is as shown in Table 1.
The permeable base layer is coarse sand with the thickness of 40mm and the particle diameter of 0.5 mm.
The thickness of the graded broken stone basal layer is 300 mm.
The bottom of the gravel base layer is provided with a groove, the groove is rectangular, and the height and the bottom width of the groove are 120 mm; a PVC water permeable pipe is laid at the bottom of the groove, the diameter of the water permeable pipe is 100mm, and a layer of water permeable geotextile is wrapped on the surface of the water permeable pipe; the gradient of the permeable pipe is the same as that of the groove and is 2 percent; the setting directions of the permeable pipes and the grooves are perpendicular to the central line of the road surface, and the distance between every two adjacent permeable pipes and grooves is 20 m.
The elevation of the top surface of the roadbed is lowest at the PVC permeable pipe, and gradually rises from inside to outside perpendicular to the permeable pipe, and the gradient is 1%; and laying a layer of waterproof geotextile on the top surface of the roadbed.
The thickness of the permeable geotextile is 2.1mm, the specification is 250g/m2, and the permeability coefficient is 0.01 mm/s. The thickness of the waterproof geotextile is 2.2mm, and the specification is 300g/m 2.
The mixing ratio parameters and the mechanical property test results of the polymer modified porous cement concrete surface layer of the embodiment are shown in table 2, wherein the mixing ratio parameters comprise the most main water cement ratio and the most important poly cement ratio; the mechanical properties comprise compressive strength (MPa), flexural strength (MPa), porosity, flexural ratio and the like. As can be seen from Table 2, the compressive strength and the flexural strength of the examples are both high, and the flexural-compressive ratio reaches 0.254, which indicates that the flexural strength is good and meets the requirement of pavement service performance; the porosity of the waterproof layer reaches 25%, the water permeating effect is good, and rainwater can permeate the surface layer and be discharged into the base layer rapidly. The embodiment shows, the utility model discloses have better mechanical properties and fall the drainage performance of making an uproar, be fit for being used for urban drainage road surface course.
TABLE 1 Polymer modified cellular Cement concrete aggregate gradation
| Mesh size (mm) | 13.2 | 9.5 | 4.75 | 2.36 | 1.18 | 0.6 | 0.075 |
| Passage Rate (%) | 100 | 92.6 | 46.0 | 7.7 | 4.5 | 3.1 | 1.2 |
Table 2 parameters of the examples and their mechanical properties test results
The above is only a preferred embodiment of the present invention, and the scope of the right of the present invention should not be limited by this, so that the equivalent changes made in the claims of the present invention still belong to the protection scope of the present invention.
Claims (10)
1. A noise-reducing and water-draining polymer modified porous concrete pavement structure is characterized by comprising a polymer modified porous cement concrete pavement, a water-permeable base layer, a graded broken stone base layer and a roadbed which are sequentially paved from top to bottom, wherein one or more grooves are formed in the bottom of the graded broken stone base layer, and water-permeable pipes are paved in the grooves;
the polymer modified porous cement concrete surface layer is of a skeleton-void structure and has communicated porosity, and the porosity is 14% -30%.
2. The noise-reducing and water-draining polymer modified porous concrete pavement structure as claimed in claim 1, wherein the surface of the water-permeable pipe is wrapped with water-permeable geotextile.
3. A noise-reducing and water-draining polymer modified porous concrete pavement structure as claimed in claim 1, wherein a waterproof geotextile is laid on the top surface of the roadbed.
4. A noise-reducing and water-draining polymer modified porous concrete pavement structure as claimed in claim 1, wherein the polymer modified porous cement concrete surface layer is provided with a kerb on one side or both sides, the bottom of the kerb is provided with a fine stone concrete foundation, and the outer ends of the water-permeable pipes extend out of the road foundation and are butted with a sunken green belt.
5. The noise-reducing and water-draining polymer modified porous concrete pavement structure as claimed in claim 1, wherein the polymer modified porous cement concrete surface layer has a thickness of 200-300 mm and a porosity of 14-30%.
6. The noise-reducing and water-draining polymer modified porous concrete pavement structure as claimed in claim 1, wherein the water-permeable base layer is coarse sand, the thickness of the water-permeable base layer is 30-80 mm, and the particle diameter of the water-permeable base layer is 0.5-1 mm.
7. The noise-reducing and water-draining polymer modified porous concrete pavement structure as claimed in claim 1, wherein the thickness of the graded broken stone base layer is 200-300 mm.
8. A noise-reducing and water-draining polymer modified porous concrete pavement structure as claimed in claim 1, wherein the height and bottom width of the trench are 100-150 mm, the trench is trapezoidal or rectangular, the water-permeable pipe is longitudinally laid in the trench along the length direction of the trench, and the diameter of the water-permeable pipe is 80-120 mm.
9. The noise-reducing and water-draining polymer modified porous concrete pavement structure as claimed in claim 1, wherein the slope of the water-permeable pipes is 1% -2% the same as the slope of the grooves, the arrangement directions of the water-permeable pipes and the grooves are both perpendicular to the central line of the pavement, and the distance between two adjacent water-permeable pipes and the distance between two adjacent grooves are both 10-30 m.
10. The noise-reducing and water-draining polymer modified porous concrete pavement structure as claimed in claim 1, wherein the elevation of the top surface of the roadbed is lowest at the position of the water-permeable pipe, and gradually increases from inside to outside, and the gradient is 1% -2%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957762A (en) * | 2021-11-08 | 2022-01-21 | 湖南交通国际经济工程合作有限公司 | Construction method of water-permeable cement concrete pavement |
| CN115162080A (en) * | 2022-06-17 | 2022-10-11 | 中交二公局东萌工程有限公司 | Noise absorption type road drainage water filtering structure and construction method thereof |
| CN117646355A (en) * | 2024-01-03 | 2024-03-05 | 中国科学院西北生态环境资源研究院 | Frost-proof high-speed railway base structure of frozen soil area in season |
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2019
- 2019-04-22 CN CN201920551422.6U patent/CN210797145U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957762A (en) * | 2021-11-08 | 2022-01-21 | 湖南交通国际经济工程合作有限公司 | Construction method of water-permeable cement concrete pavement |
| CN115162080A (en) * | 2022-06-17 | 2022-10-11 | 中交二公局东萌工程有限公司 | Noise absorption type road drainage water filtering structure and construction method thereof |
| CN115162080B (en) * | 2022-06-17 | 2024-06-11 | 中交二公局东萌工程有限公司 | Noise absorption type road drainage and filtering structure and construction method thereof |
| CN117646355A (en) * | 2024-01-03 | 2024-03-05 | 中国科学院西北生态环境资源研究院 | Frost-proof high-speed railway base structure of frozen soil area in season |
| CN117646355B (en) * | 2024-01-03 | 2024-05-10 | 中国科学院西北生态环境资源研究院 | Frost-proof high-speed railway base structure of frozen soil area in season |
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