CN112959459A - Preparation method of assembled pervious concrete road board - Google Patents
Preparation method of assembled pervious concrete road board Download PDFInfo
- Publication number
- CN112959459A CN112959459A CN202110207103.5A CN202110207103A CN112959459A CN 112959459 A CN112959459 A CN 112959459A CN 202110207103 A CN202110207103 A CN 202110207103A CN 112959459 A CN112959459 A CN 112959459A
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- concrete
- pervious concrete
- pervious
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/29—Producing shaped prefabricated articles from the material by profiling or strickling the material in open moulds or on moulding surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0015—Machines or methods for applying the material to surfaces to form a permanent layer thereon on multilayered articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00612—Uses not provided for elsewhere in C04B2111/00 as one or more layers of a layered structure
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention provides a preparation method of an assembled pervious concrete road board, and relates to the technical field of concrete road processing. The concrete road board is divided into an upper part and a lower part, the bottom part is 100mm thick base layer concrete, the surface layer is 30mm thick pervious concrete, and the preparation method mainly comprises the steps of manufacturing a mould, prefabricating the concrete, pouring the road board at the bottom part, pouring the pervious concrete at the upper part, performing surface treatment, curing and demoulding, curing a finished product and the like. The invention overcomes the defects of the prior art, can conveniently lay and disassemble the road surface by independently preparing the spliced concrete road board through the mould, is convenient for the road board to be recycled, can bear the traffic of small vehicles, and meets the requirements of common concrete roads.
Description
Technical Field
The invention relates to the technical field of concrete road processing, in particular to a preparation method of an assembled pervious concrete road board.
Background
Concrete is a common material in the design of the existing roads, but most of the existing concrete roads are formed by directly pouring concrete materials on a roadbed and then drying the concrete materials, and water-permeable concrete materials are usually adopted for pouring construction in order to achieve a certain water permeable effect, so that the load bearing effect of the concrete ground is influenced to a certain extent.
Because the concrete pavement of current is the integral type pouring, all go on in outdoor open-air environment mostly when road surface is dry and maintenance, the solidification and the maintenance of concrete are very easily influenced by the environmental change to can lead to the construction cycle longer, concrete ground lay the back simultaneously, can't remove, can cause great waste usually in the scene of some temporary building construction.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the preparation method of the assembled permeable concrete road board, the spliced concrete road board is prepared independently through the mould, the pavement can be conveniently paved and disassembled, the road board can be conveniently recycled, the traffic of small vehicles can be borne, and the requirements of common concrete roads are met.
In order to achieve the above purpose, the technical scheme of the invention is realized by the following technical scheme:
the preparation method of the assembled permeable concrete road board comprises the following steps of:
(1) manufacturing a mould: preparing a steel die with the size of 2000mm multiplied by 800mm multiplied by 130mm as a processing die;
(2) prefabricating concrete: according to the mass ratio: mixing water, fine aggregate, coarse aggregate, cement and ginseng material 152: 880: 968: 360: 50 to prepare base layer concrete for later use; simultaneously, according to the mass ratio: mixing water, cementing agent, broken stone and cement (113: 100: 1518: 310) to obtain pervious concrete for later use;
(3) pouring the bottom road plate: preparing a bidirectional phi 10 reinforcing mesh sheet according to the size of a bottom plate of 2000mm multiplied by 800mm multiplied by 100mm, placing the reinforcing mesh sheet in a mold, pouring base layer concrete in the mold to cover the reinforcing mesh sheet, vibrating and compacting the base layer concrete, and standing for later use;
(4) pouring upper pervious concrete: continuously pouring pervious concrete in the mould before the poured base layer concrete is initially set, and then reserving for later use;
(5) surface treatment: scraping and compacting the poured pervious concrete;
(6) curing and demolding: after the surface treatment is finished, placing the mould in a constant-temperature curing kiln for curing, and demoulding after the strength of the bottom concrete reaches 12 Mp;
(7) and (4) maintaining a finished product: and (3) after demolding, the pervious concrete starts to be watered and cured, and the watering curing time is 7-10 days.
Preferably, the cement selected in the step (2) is 42.5Mp of portland cement.
Preferably, the base concrete in the step (3) is poured into the mould for three times, and after each pouring, the base concrete is spread by a flat vibrator and then is continuously poured.
Preferably, the temperature for pouring the base layer concrete and the pervious concrete in the step (3) and the step (4) is 10-25 ℃.
Preferably, before the pervious concrete is poured in the step (4), the mould poured with the base concrete is kept still for 20-30 min.
Preferably, the concrete is compacted in the step (5) by sequentially compacting the surface of the concrete with pressures of 40KPa, 80KPa and 160 KPa.
Preferably, the temperature in the constant-temperature curing kiln in the step (6) is 22 +/-2 ℃, and the relative humidity is 90-95%.
Preferably, the water spraying and maintaining mode in the step (7) is to slowly pour normal-temperature clear water from top to bottom.
The invention provides a preparation method of an assembled pervious concrete road plate, which has the advantages that compared with the prior art:
(1) according to the invention, cement is poured into the cement board with the thickness of 2000mm multiplied by 800mm multiplied by 130mm in two layers, so that the pavement and the dismantling of a road are facilitated, the noise reduction of a temporary building field is facilitated, the processing time is reduced, and the processing efficiency is improved.
(2) The invention adopts the concrete pouring of the bottom base layer for the road plate and the permeable concrete pouring of the upper layer, thereby effectively preventing water accumulation in rainy days and facilitating pedestrians and traveling.
(3) The invention combines the pervious concrete and the concrete road plate, is produced in factory, has stable quality and quick and flexible assembly, and can be used for paving on small-sized vehicle roads, non-motor vehicle lanes and sidewalks; the water accumulation in rainy days is avoided, and the defects of vehicle water splashing, pedestrian shoe wetting and the like are avoided; reducing building garbage and removing flying dust; flexible and changeable and can be adjusted at any time.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all 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.
Example 1:
the preparation method of the assembled permeable concrete road board comprises the following steps of:
(1) manufacturing a mould: preparing a steel die with the size of 2000mm multiplied by 800mm multiplied by 130mm as a processing die;
(2) prefabricating concrete: according to the mass ratio: mixing water, fine aggregate, coarse aggregate, cement and ginseng material 152: 880: 968: 360: 50 to prepare base layer concrete for later use; simultaneously, according to the mass ratio: mixing water, cementing agent, broken stone and cement (113: 100: 1518: 310) to obtain pervious concrete for later use, wherein the selected cement is 42.5Mp Portland cement;
(3) pouring the bottom road plate: preparing a bidirectional phi 10 reinforcing mesh sheet according to the size of a bottom plate of 2000mm multiplied by 800mm multiplied by 100mm, placing the reinforcing mesh sheet in a mold, pouring base layer concrete in the mold to cover the reinforcing mesh sheet in a temperature environment of 10-25 ℃, pouring the base layer concrete in the mold for three times, paving the base layer concrete by using a flat vibrator after each pouring, continuing pouring, vibrating the base layer concrete to be compact, and standing for later use;
(4) pouring upper pervious concrete: after the poured base layer concrete is kept stand for 20-30min, pervious concrete is continuously poured into the mould in the temperature environment of 10-25 ℃ for later use;
(5) surface treatment: strickling the poured pervious concrete, and compacting the surface of the pervious concrete by sequentially adopting the pressures of 40KPa, 80KPa and 160 KPa;
(6) curing and demolding: after the surface treatment is finished, placing the die in a constant-temperature curing kiln for curing, wherein the temperature in the kiln is 22 +/-2 ℃, the relative humidity is 90-95%, and demoulding is carried out after the strength of the bottom concrete reaches 12 Mp;
(7) and (4) maintaining a finished product: after demoulding, the pervious concrete begins to be watered and maintained, namely normal-temperature clear water is slowly poured from top to bottom, and the maintenance time is 7 days.
Comparative example 1:
a preparation method of an assembled permeable concrete road board is characterized in that the concrete road board is divided into an upper part and a lower part, the bottom part is provided with 70mm thick base layer concrete, the surface layer is provided with 60mm thick permeable concrete, and the other processing steps are the same as those in example 1.
Comparative example 2:
a preparation method of an assembled permeable concrete road board is characterized in that the concrete road board is divided into an upper part and a lower part, the bottom part is provided with base layer concrete with the thickness of 80mm, the surface layer is provided with permeable concrete with the thickness of 50mm, and the rest processing steps are the same as those in embodiment 1.
Comparative example 3:
a preparation method of an assembled permeable concrete road board is characterized in that the concrete road board is divided into an upper part and a lower part, the bottom of the concrete road board is provided with 90mm thick base layer concrete, the surface of the concrete road board is provided with 40mm thick permeable concrete, and the rest processing steps are the same as those in embodiment 1.
Comparative example 4:
a preparation method of an assembled permeable concrete road board is characterized in that the concrete road board is divided into an upper part and a lower part, the bottom of the concrete road board is provided with base layer concrete with the thickness of 110mm, the surface of the concrete road board is provided with permeable concrete with the thickness of 20mm, and the rest processing steps are the same as those in embodiment 1.
Comparative example 5:
a preparation method of an assembled permeable concrete road board is characterized in that the concrete road board is divided into an upper part and a lower part, the bottom part is 120mm thick base layer concrete, the surface layer is 10mm thick permeable concrete, and the rest processing steps are the same as those in example 1.
Comparative example 6:
a preparation method of an assembled permeable concrete road board is characterized in that the concrete road board is divided into an upper part and a lower part, the bottom part is 120mm thick base layer concrete, the surface layer is 10mm thick permeable concrete, and the rest processing steps are the same as those in example 1.
Comparative example 7:
and after an outdoor road is selected to construct a roadbed with the length of 300m and the width of 50m, 130mm of base layer concrete is poured on the roadbed, and the roadbed is strickled off and dried at normal temperature to obtain a first concrete pavement for later use.
Comparative example 8:
and after an outdoor road is selected to construct a roadbed with the length of 300m and the width of 50m, 100mm of base layer concrete is poured on the roadbed, the roadbed is strickled off, 30mm of pervious concrete is continuously poured on the roadbed, the roadbed is strickled off, and the second concrete pavement is obtained after drying at normal temperature for later use.
And (3) detection:
1. after the concrete road boards obtained in the above example 1 and comparative examples 1 to 6 are maintained and left to stand at room temperature for 28 days, strength detection and surface water permeation effect detection are performed (the water permeation effect is divided into 5 minutes, namely, water rapidly permeates into the lower part, and no water is formed; 4 to 3 minutes, namely, water slowly permeates into the lower part, and less water is formed; 2 to 1, namely, water slowly permeates into the lower part, and a large amount of water is formed), and the results are shown in the following table 1:
TABLE 1
2. Seven days after curing the concrete pavement slab obtained in the above example 1, a temporary road with a length of 300m and a width of 50m is assembled outdoors, and the assembling time of the road and the construction time of the road in the comparative example 1 and the comparative example 2 are detected, and the pressure detection is performed on each road surface, and the results are shown in the following table 2:
TABLE 1
| Group of | Construction service time | Compressive strength (MPa) |
| Example 1 | 2h | 44.6 |
| Comparative example 7 | 9d | 37.8 |
| Comparative example 8 | 10d | 39.3 |
The concrete road board prepared by the invention has excellent compressive strength and extremely high water permeability, ensures the use of normal roads and improves the construction efficiency.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The preparation method of the assembled pervious concrete road board is characterized in that the concrete road board is divided into an upper part and a lower part, the bottom of the concrete road board is 100mm thick base layer concrete, the surface layer of the concrete road board is 30mm thick pervious concrete, and the preparation process of the concrete road board comprises the following steps:
(1) manufacturing a mould: preparing a steel die with the size of 2000mm multiplied by 800mm multiplied by 130mm as a processing die;
(2) prefabricating concrete: according to the mass ratio: mixing water, fine aggregate, coarse aggregate, cement and ginseng material 152: 880: 968: 360: 50 to prepare base layer concrete for later use; simultaneously, according to the mass ratio: mixing water, cementing agent, broken stone and cement (113: 100: 1518: 310) to obtain pervious concrete for later use;
(3) pouring the bottom road plate: preparing a bidirectional phi 10 reinforcing mesh sheet according to the size of a bottom plate of 2000mm multiplied by 800mm multiplied by 100mm, placing the reinforcing mesh sheet in a mold, pouring base layer concrete in the mold to cover the reinforcing mesh sheet, vibrating and compacting the base layer concrete, and standing for later use;
(4) pouring upper pervious concrete: continuously pouring pervious concrete in the mould before the poured base layer concrete is initially set, and then reserving for later use;
(5) surface treatment: scraping and compacting the poured pervious concrete;
(6) curing and demolding: after the surface treatment is finished, placing the mould in a constant-temperature curing kiln for curing, and demoulding after the strength of the bottom concrete reaches 12 Mp;
(7) and (4) maintaining a finished product: and (3) after demolding, the pervious concrete starts to be watered and cured, and the watering curing time is 7-10 days.
2. The method for preparing the fabricated pervious concrete road slab as claimed in claim 1, wherein the cement selected in the step (2) is 42.5Mp portland cement.
3. The method for preparing the fabricated pervious concrete road slab as claimed in claim 1, wherein the base concrete in the step (3) is poured into the mold in three times, and after each pouring, the base concrete is spread by a flat vibrator and then is continuously poured.
4. The method for preparing the fabricated pervious concrete pavement slab as claimed in claim 1, wherein the temperature for pouring the base concrete and the pervious concrete in the steps (3) and (4) is 10-25 ℃.
5. The method for preparing the fabricated pervious concrete pavement slab as claimed in claim 1, wherein the mold on which the foundation concrete is poured is left for 20-30min before the pervious concrete is poured in the step (4).
6. The method for preparing the fabricated pervious concrete pavement slab as claimed in claim 1, wherein the concrete in the step (5) is compacted by sequentially compacting the concrete surface with 40KPa, 80KPa and 160KPa of pressure.
7. The method for preparing the fabricated pervious concrete road slab as claimed in claim 1, wherein the temperature in the constant-temperature curing kiln in the step (6) is 22 ± 2 ℃ and the relative humidity is 90-95%.
8. The method for preparing the fabricated pervious concrete road slab as claimed in claim 1, wherein the sprinkling and curing in the step (7) is performed by slowly sprinkling normal temperature clear water from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110207103.5A CN112959459A (en) | 2021-02-24 | 2021-02-24 | Preparation method of assembled pervious concrete road board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110207103.5A CN112959459A (en) | 2021-02-24 | 2021-02-24 | Preparation method of assembled pervious concrete road board |
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| CN112959459A true CN112959459A (en) | 2021-06-15 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016717A (en) * | 2007-02-14 | 2007-08-15 | 易志坚 | Porous cement concrete cement pavement having bond coat on rolled cement concrete and construction method therefor |
| CN101956357A (en) * | 2010-09-03 | 2011-01-26 | 建德市新世纪装饰材料有限公司 | Double-layer baking-free permeable brick and manufacturing method thereof |
| KR20190064858A (en) * | 2017-12-01 | 2019-06-11 | 주식회사 선로드 | Manufacture method of sidewalk block with preventing growing root and weeds and sidewalk block, water permeable block, safety guide block using it |
| CN110485237A (en) * | 2019-07-11 | 2019-11-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of production method of fabricated permeable pavement concrete slab |
| CN211227924U (en) * | 2019-10-24 | 2020-08-11 | 江西省建筑材料工业科学研究设计院 | Pervious concrete pavement system |
-
2021
- 2021-02-24 CN CN202110207103.5A patent/CN112959459A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101016717A (en) * | 2007-02-14 | 2007-08-15 | 易志坚 | Porous cement concrete cement pavement having bond coat on rolled cement concrete and construction method therefor |
| CN101956357A (en) * | 2010-09-03 | 2011-01-26 | 建德市新世纪装饰材料有限公司 | Double-layer baking-free permeable brick and manufacturing method thereof |
| KR20190064858A (en) * | 2017-12-01 | 2019-06-11 | 주식회사 선로드 | Manufacture method of sidewalk block with preventing growing root and weeds and sidewalk block, water permeable block, safety guide block using it |
| CN110485237A (en) * | 2019-07-11 | 2019-11-22 | 上海市政工程设计研究总院（集团）有限公司 | A kind of production method of fabricated permeable pavement concrete slab |
| CN211227924U (en) * | 2019-10-24 | 2020-08-11 | 江西省建筑材料工业科学研究设计院 | Pervious concrete pavement system |
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Application publication date: 20210615 |