CN110924256A - Permeable concrete pavement brick and manufacturing method thereof - Google Patents
Permeable concrete pavement brick and manufacturing method thereof Download PDFInfo
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- CN110924256A CN110924256A CN201911226826.9A CN201911226826A CN110924256A CN 110924256 A CN110924256 A CN 110924256A CN 201911226826 A CN201911226826 A CN 201911226826A CN 110924256 A CN110924256 A CN 110924256A
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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
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
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- 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
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- 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
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
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- 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
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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
- E01C5/00—Pavings made of prefabricated single units
- E01C5/06—Pavings made of prefabricated single units made of units with cement or like binders
- E01C5/065—Pavings made of prefabricated single units made of units with cement or like binders characterised by their structure or component materials, e.g. concrete layers of different structure, special additives
Abstract
The invention provides a permeable concrete pavement brick and a manufacturing method thereof. The gradient pore structure can effectively prevent or reduce the blockage of clay and the like in rainwater to pores, and effectively solve the problem of blockage, maintenance and cleaning of porous concrete pavements, thereby prolonging the service life of the concrete inner face bricks and reducing the labor intensity and cost of sponge city maintenance. In addition, the manufacturing method of the permeable concrete pavement brick adopts the steps that concrete with different permeability coefficients is uniformly distributed in sequence according to the sequence of the permeability coefficients from large to small, so that a multilayer structure is formed. The preparation method has the advantages of simple process, low preparation cost, no need of special process, easy production and convenient use.
Description
Technical Field
The invention relates to the technical field of permeable bricks, in particular to a permeable concrete pavement brick and a manufacturing method thereof.
Background
In order to prevent damages such as urban waterlogging caused by natural disasters such as rain, snow and the like, sponge urban construction is more and more concerned and favored by people.
The permeable brick paving material is one of important materials for sponge city construction, and since the 30 s of the 20 th century, the cement association in europe and japan lays permeable materials on urban parking lots, passages or roads with low traffic; in the 70 s, the permeable brick paving material was widely used in urban construction, and became the main paving material for the road surface in developed countries in the 90 s. The water permeable paving material keeps good development trend all the time, and the technology is continuously promoted.
The microporous ceramic membrane is developed by the sol-gel technology by the university of the Netherlands from the beginning of the 80 th to the 90 th of the 20 th century, belongs to a multilayer asymmetric structure, has the pore diameter of less than 3 mu m and the porosity of more than 50 percent, and can be successfully used for separating a liquid phase system in the biological and food industries. At present, the research on the gradient pore materials at home and abroad mainly focuses on the aspect of ceramics, and the aspect of concrete is not reported.
The cement concrete water-permeable paving material in China is applied to part of sponge city construction, but most of the existing cement concrete water-permeable paving materials are single in water permeability, and the pores of porous cement concrete are easily blocked, so that the porosity is reduced, the dredging management is difficult, the cost is high, and the water permeability effect and the service life of the cement concrete water-permeable paving material are seriously influenced.
Disclosure of Invention
Aiming at the defects of the cement concrete water-permeable paving material in the prior art, the invention aims to provide a water-permeable concrete pavement brick and a manufacturing method thereof.
According to a first aspect of the present invention, there is provided a permeable concrete pavement brick comprising a multi-layer structure, the multi-layer structure forming a gradient pore structure with successively increasing permeability coefficients in a direction from a surface layer to a bottom layer of the permeable concrete pavement brick.
Optionally, the permeable concrete pavement brick has a permeability coefficient of 1.45 × 10-2cm/s～2.0×10-2cm/s。
Optionally, the permeable concrete pavement brick comprises a first layer structure with a thickness of 10 mm-20 mm, a second layer structure with a thickness of 15 mm-20 mm and a third layer structure with a thickness of 20 mm-30 mm in the direction from the surface layer to the bottom layer
Optionally, the first water permeability coefficient of the first layer structure is greater than or equal to 1 × 10-2cm/s, and the second water permeability coefficient of the second layer structure is more than or equal to 2 multiplied by 10-2cm/s, and the third water permeability coefficient of the third layer structure is more than or equal to 2.5 multiplied by 10-2cm/s。
Optionally, the flexural strength of the permeable concrete pavement brick is between 3.0MPa and 4.0 MPa.
According to a second aspect of the present invention, there is provided a method of manufacturing a permeable concrete pavement brick, comprising the steps of:
adding water into aggregate and cementing material according to different proportions and stirring to respectively prepare concrete with different water permeability coefficients;
sequentially distributing the concrete with different water permeability coefficients in a mould according to the sequence of the water permeability coefficients from large to small to form multilayer concrete with different water permeability coefficients;
carrying out pressurized vibration molding on the multilayer concrete;
and maintaining the multilayer concrete to form the permeable concrete pavement brick with a multilayer structure with different permeability coefficients.
Optionally, the method comprises the following steps of stirring the aggregate and the cementing material according to different preparations to respectively prepare concrete with different water permeability coefficients:
respectively weighing the aggregate and the cementing material with the granularity of 0.5-0.9 mm according to the mass ratio of 7: 3-31: 6, adding water according to the water-cement ratio of 0.26-0.45, and stirring to form first concrete with a first water permeability coefficient, wherein the cementing material comprises portland cement and silica fume accounting for 2.8-7.3% of the portland cement by mass percentage;
respectively weighing the aggregate with the granularity of 1.2-1.8 mm and the cementing material according to the mass ratio of 25: 9-145: 26, adding water according to the water-cement ratio of 0.26-0.45, and stirring to form second concrete with a second water permeability coefficient, wherein the cementing material is portland cement;
respectively weighing the aggregate and the cementing material with the granularity of 2.4-4 mm according to the mass ratio of 25: 9-145: 24, adding water according to the water-cement ratio of 0.26-0.45, and stirring to form third concrete with a third water permeability coefficient, wherein the cementing material is portland cement;
wherein the first, second and third water permeability coefficients are sequentially increased, and the first water permeability coefficient is greater than or equal to 1 × 10-2cm/s, and the second water permeability coefficient is more than or equal to 2 multiplied by 10-2cm/s, and the third water permeability coefficient is more than or equal to 2.5 multiplied by 10-2cm/s。
Optionally, the concrete with different water permeability coefficients is distributed in the mould in sequence from large to small according to the water permeability coefficients to form the multilayer concrete with different water permeability coefficients, and the method comprises the following steps:
uniformly paving the third concrete in the mould, wherein the thickness of the third concrete is 20-30 mm;
uniformly paving the second concrete above the third concrete, wherein the thickness of the second concrete is 15-20 mm;
and uniformly paving the first concrete above the second concrete, wherein the thickness of the first concrete is between 10 and 20 mm.
Optionally, the maintaining of the multi-layer concrete further includes the following steps:
curing the formed multilayer concrete and the mould in a curing room for 1d to form the permeable concrete pavement brick;
demolding the pervious concrete pavement brick;
and (4) carrying out normal pressure steam curing on the demolded permeable concrete pavement brick.
Optionally, the temperature of the curing chamber is 60-80 ℃, the humidity is 95 +/-2%, and the curing time of the atmospheric steam curing is 8-12 hours.
As described above, the permeable concrete pavement brick and the manufacturing method thereof of the present invention have the following beneficial effects:
the permeable concrete pavement brick has a multilayer structure, and the multilayer structure forms a gradient hole structure from the surface layer to the bottom layer of the permeable concrete pavement brick and has successively increased water permeability coefficients. The gradient pore structure can effectively prevent or reduce the blockage of clay and the like in rainwater to pores, and effectively solve the problem of blockage, maintenance and cleaning of porous concrete pavements, thereby prolonging the service life of the concrete inner face bricks and reducing the labor intensity and cost of sponge city maintenance.
According to the manufacturing method of the permeable concrete pavement brick, different concretes are prepared according to different permeability coefficients, then the concretes are distributed in a mould in a layering mode according to the sequence that the permeability coefficients are reduced in sequence, and the permeable concrete pavement brick can be obtained after vibration molding and steam curing. The material distribution method avoids the longitudinal mixing of concrete aggregates with different water permeability coefficients, and ensures a good layered structure; meanwhile, the gelled material slurry moves downwards under the action of gravity and the like in the vibration and pressure molding process of the molding machine, and finally, under the combined action of the concrete property holes with three different pore diameter structures and the gelled material slurry, the original discontinuous holes form continuous holes to form a gradient hole structure, so that the requirement of the concrete pavement brick with the gradient hole structure is met. The method has the advantages of simple manufacturing process, low preparation cost, no need of special process, easy production and convenient use.
Drawings
The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:
fig. 1 is a schematic structural diagram of a permeable concrete pavement brick according to an embodiment of the present invention.
Fig. 2 is a flowchart illustrating a method for manufacturing a permeable concrete pavement brick according to a second embodiment of the present invention.
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 will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 one
The embodiment provides a concrete pavior brick permeates water, and this concrete pavior brick permeates water includes multilayer structure, and multilayer structure's concrete pavior brick that permeates water has gradient pore structure. For example, in a preferred embodiment of this embodiment, as shown in FIG. 1, the permeable concrete pavement tile 100 comprises a three-layer structure, from the face layer 01 (i.e., the side exposed when laid on a pavement) to the bottom layer 02 (i.e., the side in contact with the pavement when laid on a pavement) of the permeable concrete pavement tile 100: a first layer structure 001, a second layer structure 002 and a third layer structure 003. And the water permeability of the first layer structure 001, the second layer structure 002 and the third layer structure 003 are gradually increased. Preferably, the first water permeability coefficient of the first layer structure 001 is 1 × 10 or more-2cm/s, and the second water permeability coefficient of the second layer structure 002 is more than or equal to 2 multiplied by 10-2cm/s, and a third water permeability coefficient of the third layer structure 003 is not less than 2.5X 10-2cm/s. Therefore, the overall permeability coefficient of the permeable concrete pavement brick is between 1.45 and 10-2cm/s～2.0×10-2cm/s。
In this embodiment, the thicknesses of the respective layers of the permeable concrete pavement brick 100 are also different, and specifically, as shown in fig. 1, the thickness of the first layer of structure 001 is 5mm to 10mm, the thickness of the second layer of structure 002 is 15mm to 20mm, and the thickness of the third layer of structure 003 is 25mm to 30 mm. More preferably, the thickness of the first layer 001 is 10mm, the thickness of the second layer 002 is 20mm and the thickness of the third layer 003 is 30 mm. The length and width of the permeable concrete pavement tile 100 are determined by the mold used in the manufacture, for example, the length x width may be 200mm x 100 mm.
In the schematic diagram shown in fig. 1, the water permeable pores in each layer structure appear as uniform pores, but it should be understood that in an actual structure, the water permeable pores in each layer structure are generally randomly distributed with pores of different pore sizes. In addition, although the pervious concrete pavement tile shown in fig. 1 includes a three-layer structure, it should be understood that the number of layers of the pervious concrete pavement tile may be determined according to the actual situation, for example, having a two-layer, four-layer or more-layer structure.
The gradient pore structure of each layer of structure can effectively prevent or reduce the jam to the hole such as clay in the rainwater among the concrete pavior brick of embodiment, effectively solves porous concrete pavement jam maintenance clearance problem, has prolonged the life of concrete lining brick from this, has reduced the intensity of labour and the cost of sponge city maintenance.
Example two
The embodiment provides a method for manufacturing a permeable concrete pavement brick, as shown in fig. 2, the method comprises the following steps:
s01: adding water into aggregate and cementing material according to different proportions and stirring to respectively prepare concrete with different water permeability coefficients;
in the embodiment, sand (or stone) with the granularity of 0.5-0.9 mm, 1.2-1.8 mm and 2.4-4 mm is selected as aggregate, and PC52.5 portland cement or PC52.5 portland cement and silica fume are selected as cementing materials. The aggregate cementing material and water are proportioned according to different proportions and then stirred in a stirrer to prepare the concrete with different water permeability coefficients. More preferably, the following additives may also be optionally added: a water reducing agent accounting for 1.5-3% of the weight of the cementing material, acrylate accounting for 0.5-3% of the weight of the cementing material, and persulfate accounting for 0.15-1.0% of the weight of the acrylate.
In this embodiment, the preparation of the permeable concrete pavement brick with a three-layer structure is taken as an example to explain the preparation process of concrete with different permeability coefficients, which specifically includes the following steps:
in the preferred embodiment of this embodiment, 1350g of aggregate with a particle size of 0.5-0.9 mm, 440g of PC52.5 portland cement, 18g of silica fume and 132.9ml of water are weighed and mixed, and the mixture is stirred to prepare the first concrete with a first water permeability coefficient, wherein the first water permeability coefficient is more than or equal to 1 × 10-2cm/s; more preferably, 8.8g of water reducing agent, 2.6g of calcium acrylate and 5.2mg of ammonium persulfate are added to form the second concrete.
Weighing aggregate 1350 with the granularity of 1.2-1.8 mm, PC52.5 cement 420g and water 126ml for proportioning, and stirring to prepare a second concrete with a second water permeability coefficient, wherein the first water permeability coefficient is more than or equal to 2 multiplied by 10-2cm/s. In a preferred embodiment, 8.4g of water reducing agent, 2.5g of calcium acrylate and 5.1mg of ammonium persulfate are added when the second concrete is formed;
1350g of aggregate with the granularity of 2.4-4 mm and 120ml of water of 400g of PC52.5 cement are weighed and proportioned, and the third concrete with a third water permeability coefficient is prepared after stirring, wherein the third water permeability coefficient is more than or equal to 2.5 multiplied by 10-2cm/s, and further preferably, 8g of a water reducing agent is added in forming the third concrete.
After the above concrete is prepared, the following step S02 is performed.
S02: sequentially distributing the concrete with different water permeability coefficients in a mould according to the sequence of the water permeability coefficients from large to small to form multilayer concrete with different water permeability coefficients;
the first concrete, the second concrete and the third concrete prepared in step S02 are distributed in a mold for molding, in this embodiment, a mold with a length × width × height of 200mm × 100mm × 60mm is selected for distribution and subsequent molding. First, the third concrete with the maximum water permeability coefficient is uniformly paved on the bottom layer of the mould. The paving thickness of the third concrete is 20 mm-30 mm. In this embodiment, the paving thickness of the third concrete is 30 mm;
and then paving second concrete above the third concrete, wherein the paving thickness of the second concrete is 15-20 mm. In the embodiment, the paving thickness of the second concrete is 20 mm;
and finally, paving the first concrete above the second concrete, wherein the paving thickness of the first concrete is 10-20 mm. In this embodiment, the first concrete is laid to a thickness of 10 mm.
After the three layers of concrete are laid, the following step S03 is performed.
S03: carrying out pressurized vibration molding on the multilayer concrete;
in this embodiment, the concrete paved in the mold is molded by a pressurized vibration molding method. For example, 2kg/m2The concrete is formed by adopting a concrete vibrating table. The distributing and forming mode avoids longitudinal mixing of concrete aggregates in different layers, and the cementing material slurry can move downwards in the pressurizing and vibrating forming process, so that concrete in different layers form a continuous structure and are finally bonded together.
After the concrete is molded, the following step S04 is performed.
S04: and carrying out steam curing on the multilayer concrete to form the permeable concrete pavement brick with a multilayer structure with different permeability coefficients.
And curing the formed permeable concrete pavement brick together with the mold in a curing room for 1 day (1d) to preliminarily solidify the cementing material, then demolding the permeable concrete pavement brick, and curing the demolded concrete pavement brick in a normal-pressure steam mode in a permeable mode. The temperature of the curing chamber is about 60-80 ℃, and the humidity is about 95 +/-2%; the curing temperature of the normal pressure steam curing is between 60 and 80 ℃, and the curing time is between 8 and 12 hours. In the embodiment, the permeable concrete pavement bricks are cured for 12 hours at 80 ℃ to obtain the permeable concrete pavement bricks.
In order to further characterize and inspect the performance of the permeable concrete pavement brick, the embodiment also tests the strength and the permeability coefficient of the permeable concrete pavement brick. In the embodiment, the permeable concrete pavement bricks of the embodiment are subjected to maintenance breaking strength and water permeability coefficient tests according to GB/T25993-. The test results are shown in table 1 below:
TABLE 1 Performance test results for permeable concrete pavement bricks
As shown in Table 1, the permeable concrete pavement brick of the embodiment meets the requirements of GB/T25993-f3.0, the water permeability grade is B grade.
The present embodiment is described by taking as an example a permeable concrete pavement brick having a three-layer structure formed in a length × width × height of 200mm × 100mm × 60mm, but it should be understood that the molding size and the number of structural layers of the permeable concrete pavement brick can be selected or set according to actual needs, and are not limited to the size and the number of structural layers described in the present embodiment.
The material distribution method of the embodiment avoids the longitudinal mixing of concrete aggregates with different water permeability coefficients, and ensures a good layered structure; meanwhile, the gelled material slurry moves downwards under the action of gravity and the like in the vibration and pressure molding process of the molding machine, and finally, under the combined action of the concrete property holes with three different pore diameter structures and the gelled material slurry, the original discontinuous holes form continuous holes to form a gradient hole structure, so that the requirement of the concrete pavement brick with the gradient hole structure is met. The method has the advantages of simple preparation process, low preparation cost, no need of special process, easy production and convenient use.
EXAMPLE III
The embodiment provides a method for manufacturing a permeable concrete pavement brick, which is the same as the second embodiment and is not repeated, except that:
in this embodiment, 1250g of aggregate with a particle size of 0.5-0.9 mm, 500g of PC52.5 portland cement, 14g of silica fume and 231.3ml of water are weighed and mixed, and stirred to prepare the first concrete with a first water permeability coefficient, wherein the first water permeability coefficient is more than or equal to 1 × 10-2cm/s; intoIn one step, preferably, 7.71g of water reducing agent, 10.3g of calcium acrylate and 15.45mg of ammonium persulfate are added when the second concrete is formed.
Weighing 1250 parts of aggregate with the granularity of 1.2-1.8 mm, 450g of PC52.5 cement and 202.5ml of water, proportioning, and stirring to prepare second concrete with a second water permeability coefficient, wherein the first water permeability coefficient is more than or equal to 2 multiplied by 10-2cm/s. In a preferred embodiment, 6.75g of water reducing agent, 9g of calcium acrylate and 13.5mg of ammonium persulfate are added when the second concrete is formed;
1250g of aggregate with the granularity of 2.4-4 mm, 450g of PC52.5 cement and 202.5ml are weighed and proportioned, and stirred to prepare third concrete with a third water permeability coefficient, wherein the third water permeability coefficient is more than or equal to 2.5 multiplied by 10-2cm/s, and more preferably, 6.75g of a water reducing agent is added in forming the third concrete.
After the concrete is prepared, uniformly paving third concrete with the maximum water permeability coefficient in a mould with the length, the width and the height of 200mm, 100mm and 60mm, wherein the paving thickness of the third concrete is 25 mm;
then, paving second concrete above the third concrete, wherein the paving thickness of the second concrete is 20 mm;
and finally, paving the first concrete above the second concrete, wherein the paving thickness of the first concrete is 15 mm.
After the paving was completed, the same method as in the example was used for molding and curing.
The permeable concrete pavement bricks of the embodiment are subjected to maintenance breaking strength and permeability coefficient tests according to GB/T25993-. The test results are shown in table 2 below:
TABLE 2 Performance test results for permeable concrete pavior brick
As shown in the above Table 2, the permeable concrete pavement brick of the embodiment also meets the requirements of GB/T25993-The permeable concrete pavement brick of this example was rated R in flexural strengthf3.0, the water permeability grade is B grade.
Example four
The embodiment provides a method for manufacturing a permeable concrete pavement brick, which is the same as the second and third embodiments and is not repeated, except that:
in this embodiment, 1550g of aggregate with a particle size of 0.5-0.9 mm, 300g of PC52.5 portland cement, 22g of silica fume, and 3.72ml of water are weighed and mixed, and stirred to obtain a first concrete with a first water permeability coefficient, wherein the first water permeability coefficient is greater than or equal to 1 × 10-2cm/s; further preferably, 9.66g of water reducing agent, 9.66g of calcium acrylate and 96.6mg of ammonium persulfate are added to form the second concrete.
Weighing 1550 aggregate with the granularity of 1.2-1.8 mm, 260g of PC52.5 cement and 67.6ml of water, proportioning, and stirring to prepare second concrete with a second water permeability coefficient, wherein the first water permeability coefficient is more than or equal to 2 multiplied by 10-2cm/s. In a preferred embodiment, 7.8g of water reducing agent, 7.8g of calcium acrylate and 78mg of ammonium persulfate are added when the second concrete is formed;
1550g of aggregate with the granularity of 2.4-4 mm, 240g of PC52.5 cement and 62.4ml are weighed and proportioned, and a third concrete with a third water permeability coefficient is prepared after stirring, wherein the third water permeability coefficient is more than or equal to 2.5 multiplied by 10-2cm/s, it is further preferable that 7.2g of the water reducing agent is added in forming the third concrete.
After the concrete is prepared, uniformly paving third concrete with the maximum water permeability coefficient in a mould with the length, the width and the height of 200mm, 100mm and 60mm, wherein the paving thickness of the third concrete is 20 mm;
then, paving second concrete above the third concrete, wherein the paving thickness of the second concrete is 20 mm;
and finally, paving the first concrete above the second concrete, wherein the paving thickness of the first concrete is 20 mm.
After the paving was completed, the same method as in the example was used for molding and curing.
The permeable concrete pavement bricks of the embodiment are subjected to maintenance breaking strength and permeability coefficient tests according to GB/T25993-. The test results are shown in table 3 below:
TABLE 3 Performance test results for permeable concrete pavior brick
As shown in the above table 3, the permeable concrete pavement brick of the embodiment also meets the requirements of GB/T25993-f3.0, the water permeability grade is B grade.
As described above, the permeable concrete pavement brick and the manufacturing method thereof of the present invention have the following beneficial effects:
the permeable concrete pavement brick has a multilayer structure, and the multilayer structure forms a gradient hole structure from the surface layer to the bottom layer of the permeable concrete pavement brick and has successively increased water permeability coefficients. The gradient pore structure can effectively prevent or reduce the blockage of clay and the like in rainwater to pores, and effectively solve the problem of blockage, maintenance and cleaning of porous concrete pavements, thereby prolonging the service life of the concrete inner face bricks and reducing the labor intensity and cost of sponge city maintenance.
According to the manufacturing method of the permeable concrete pavement brick, different concretes are prepared according to different permeability coefficients, then the concretes are distributed in a mould in a layering mode according to the sequence that the permeability coefficients are reduced in sequence, and the permeable concrete pavement brick can be obtained after vibration molding and steam curing. The material distribution method avoids the longitudinal mixing of concrete aggregates with different water permeability coefficients, and ensures a good layered structure; meanwhile, the gelled material slurry moves downwards under the action of gravity and the like in the vibration and pressure molding process of the molding machine, and finally, under the combined action of the concrete property holes with three different pore diameter structures and the gelled material slurry, the original discontinuous holes form continuous holes to form a gradient hole structure, so that the requirement of the concrete pavement brick with the gradient hole structure is met. The method has the advantages of simple preparation process, low preparation cost, no need of special process, easy production and convenient use.
The foregoing embodiments are merely illustrative of the principles of this invention and its efficacy, rather than limiting it, and various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the invention, which is defined in the appended claims.
Claims (10)
1. The utility model provides a concrete pavior brick permeates water, its characterized in that, the concrete pavior brick that permeates water has gradient pore structure, the concrete pavior brick that permeates water includes multilayer structure, certainly in the direction of the surface course to the bottom of the concrete pavior brick that permeates water, the coefficient of permeating water that has increased in proper order.
2. The permeable concrete pavement brick of claim 1, wherein the permeable concrete pavement brick has a permeability coefficient of 1.45 x 10-2cm/s～2.0×10-2cm/s。
3. The permeable concrete pavement brick according to claim 1, wherein the permeable concrete pavement brick comprises a first layer structure with a thickness of 10-20 mm, a second layer structure with a thickness of 15-20 mm, and a third layer structure with a thickness of 20-30 mm in a direction from the surface layer to the bottom layer.
4. The permeable concrete pavement brick of claim 3, wherein the first layer structure has a first permeability coefficient of 1 x 10 or more-2cm/s, and the second water permeability coefficient of the second layer structure is more than or equal to 2 multiplied by 10-2cm/s, and the third water permeability coefficient of the third layer structure is more than or equal to 2.5 multiplied by 10-2cm/s。
5. The permeable concrete pavement brick according to claim 1, wherein the permeable concrete pavement brick has a flexural strength of 3.0 to 4.0 MPa.
6. A method for manufacturing permeable concrete pavement bricks is characterized by comprising the following steps:
adding water into aggregate and cementing material according to different proportions and stirring to respectively prepare concrete with different water permeability coefficients;
sequentially distributing the concrete with different water permeability coefficients in a mould according to the sequence of the water permeability coefficients from large to small to form multilayer concrete with different water permeability coefficients;
carrying out pressurized vibration molding on the multilayer concrete;
and maintaining the multilayer concrete to form the permeable concrete pavement brick with a multilayer structure with different permeability coefficients.
7. The method for manufacturing the permeable concrete pavement brick according to claim 6, wherein the concrete with different permeability coefficients is prepared by stirring the aggregates and the gelled materials according to different preparations, and the method further comprises the following steps:
respectively weighing the aggregate and the cementing material with the granularity of 0.5-0.9 mm according to the mass ratio of 7: 3-31: 6, adding water according to the water-cement ratio of 0.26-0.45, and stirring to form first concrete with a first water permeability coefficient, wherein the cementing material comprises portland cement and silica fume accounting for 2.8-7.3% of the portland cement by mass percentage;
respectively weighing the aggregate with the granularity of 1.2-1.8 mm and the cementing material according to the mass ratio of 25: 9-145: 26, adding water according to the water-cement ratio of 0.26-0.45, and stirring to form second concrete with a second water permeability coefficient, wherein the cementing material is portland cement;
respectively weighing the aggregate and the cementing material with the granularity of 2.4-4 mm according to the mass ratio of 25: 9-145: 24, adding water according to the water-cement ratio of 0.26-0.45, and stirring to form third concrete with a third water permeability coefficient, wherein the cementing material is portland cement;
wherein the first water permeability coefficient isThe second water permeability coefficient and the third water permeability coefficient are sequentially increased, and the first water permeability coefficient is more than or equal to 1 multiplied by 10-2cm/s, and the second water permeability coefficient is more than or equal to 2 multiplied by 10-2cm/s, and the third water permeability coefficient is more than or equal to 2.5 multiplied by 10-2cm/s。
8. The method for manufacturing the permeable concrete pavement brick according to claim 7, wherein the concrete with different permeability coefficients is sequentially distributed in the mould according to the sequence of the permeability coefficients from large to small to form the multilayer concrete with different permeability coefficients, and the method comprises the following steps:
uniformly paving the third concrete in the mould, wherein the thickness of the third concrete is 20-30 mm;
uniformly paving the second concrete above the third concrete, wherein the thickness of the second concrete is 15-20 mm;
and uniformly paving the first concrete above the second concrete, wherein the thickness of the first concrete is between 10 and 20 mm.
9. The method for making permeable concrete pavement bricks according to claim 6, wherein the curing of the multi-layered concrete, further comprises the steps of:
curing the formed multilayer concrete and the mould in a curing room for 1d to form the permeable concrete pavement brick;
demolding the pervious concrete pavement brick;
and (4) carrying out normal pressure steam curing on the demolded permeable concrete pavement brick.
10. The method for manufacturing the pervious concrete pavement brick of claim 9, wherein the temperature of the curing chamber is 60-80 ℃, the humidity is 95 ± 2%, and the curing time of the atmospheric steam curing is 8-12 hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105187A (en) * | 2021-04-08 | 2021-07-13 | 武汉来道建材科技有限公司 | Permeable pavement paving layer and preparation method thereof |
| CN114621022A (en) * | 2022-03-14 | 2022-06-14 | 武汉三源特种建材有限责任公司 | Preparation method of porous concrete building material |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2981373A1 (en) * | 2011-10-13 | 2013-04-19 | Vm Beton Services | Coating i.e. floor covering e.g. flagstone, for draining water in basin of swimming pool, has lower structural layer made of concrete, and upper layer formed of agglomerate of aggregates and bonded with hydrogenated aliphatic epoxy resin |
| CN105541373A (en) * | 2016-03-01 | 2016-05-04 | 江苏万特福建筑构件有限公司 | High-strength and permeable concrete brick |
| CN106167380A (en) * | 2016-06-27 | 2016-11-30 | 中国十七冶集团有限公司 | A kind of iron tailings anti-block water permeable concrete road surface and preparation method thereof |
| EP3336250A1 (en) * | 2016-12-19 | 2018-06-20 | Kamal Farid | A paved structure |
| CN110510898A (en) * | 2019-09-24 | 2019-11-29 | 厦门高时实业有限公司 | Water-permeable brick made of pervious surface aggregate made of a kind of solid waste and the aggregate |
-
2019
- 2019-12-04 CN CN201911226826.9A patent/CN110924256A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2981373A1 (en) * | 2011-10-13 | 2013-04-19 | Vm Beton Services | Coating i.e. floor covering e.g. flagstone, for draining water in basin of swimming pool, has lower structural layer made of concrete, and upper layer formed of agglomerate of aggregates and bonded with hydrogenated aliphatic epoxy resin |
| CN105541373A (en) * | 2016-03-01 | 2016-05-04 | 江苏万特福建筑构件有限公司 | High-strength and permeable concrete brick |
| CN106167380A (en) * | 2016-06-27 | 2016-11-30 | 中国十七冶集团有限公司 | A kind of iron tailings anti-block water permeable concrete road surface and preparation method thereof |
| EP3336250A1 (en) * | 2016-12-19 | 2018-06-20 | Kamal Farid | A paved structure |
| CN110510898A (en) * | 2019-09-24 | 2019-11-29 | 厦门高时实业有限公司 | Water-permeable brick made of pervious surface aggregate made of a kind of solid waste and the aggregate |
Non-Patent Citations (1)
| Title |
|---|
| 李秋义等: "《绿色混凝土技术》", 30 September 2014, 北京：中国建材工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105187A (en) * | 2021-04-08 | 2021-07-13 | 武汉来道建材科技有限公司 | Permeable pavement paving layer and preparation method thereof |
| CN114621022A (en) * | 2022-03-14 | 2022-06-14 | 武汉三源特种建材有限责任公司 | Preparation method of porous concrete building material |
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