CN108914734A - High tensile pervious concrete sandwich structure and preparation method - Google Patents
High tensile pervious concrete sandwich structure and preparation method Download PDFInfo
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- CN108914734A CN108914734A CN201810756179.1A CN201810756179A CN108914734A CN 108914734 A CN108914734 A CN 108914734A CN 201810756179 A CN201810756179 A CN 201810756179A CN 108914734 A CN108914734 A CN 108914734A
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- pervious concrete
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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
- E01C5/08—Reinforced units with steel frames
-
- 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
-
- 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
- B28C5/40—Mixing specially adapted for preparing mixtures containing fibres
- B28C5/402—Methods
-
- 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
-
- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses high tensile pervious concrete sandwich structure and preparation methods, including pervious concrete main structure body, Fill Reinforced With Geogrids layer and adhesive layer；Tensile region spreads one layer in the pervious concrete main structure body or interval is laid with multilayer TGXG reinforcing layer；The upper and lower surface of each Fill Reinforced With Geogrids layer is coated with adhesive layer；Fibrous material is distributed in the pervious concrete main structure body；The pervious concrete that fibrous material is distributed with is filled up in the grid-gap of Fill Reinforced With Geogrids layer.The present invention utilizes Fill Reinforced With Geogrids layer, adhesive layer, fibrous material and pervious concrete collective effect, to improve the tensile strength of pervious concrete sandwich structure.In addition, construction is simple of the present invention and flexible, cost economy promote China sponge city to build and are of great significance to the application range for expanding pervious concrete.
Description
Technical field
The present invention relates to the field of building materials for constructing intelligent sponge city, in particular to a kind of permeable coagulations of high tensile
Native sandwich structure and preparation method.
Background technique
Pervious concrete is mixed and stirred according to a certain percentage by the cement of specific gradation, coarse aggregate, admixture, additive
Eco-concrete.The presence of the continuous hole of pervious concrete can effectively solve the ponding in city and the Water Damage of structure, promote
City and natural water circulation.Its heat accumulation significant effect of absorbing heat, can be effectively relieved the tropical island effect in city.Porous structure may be used also
With sqouynd absorption lowering noise, mitigate the noise pollution in city.It is macroporous to exist but also the freezing-thawing resistance of pervious concrete is higher than one
As concrete.With the continuous propulsion of China's sponge urban construction process, pervious concrete structure will be due to its ecological dominance quilt
It is widely applied in municipal engineering construction.
There is also certain deficiencies while the mushy structure feature of pervious concrete brings many advantages：Tensile strength
Low, cracking resistance is poor.Which has limited the application ranges of pervious concrete, prevent pervious concrete is from draining advantage more using it
Good is applied in the draining force structures such as barricade and drainage tubular pile.Pervious concrete is chiefly used in pavement, stops at this stage
The making in parking lot often has cracking when as load road surface.It is existing research from material composition and match ratio obtain the ratio of mud,
The factors such as aggregate size, fiber type and length are to influence an important factor for permeable coagulation coagulates native bending tensile strength, by changing
Kind above-mentioned factor, also can only be increased to 3MPa or so from 2MPa for bending tensile strength, still be difficult to meet《The city CJJ37-2012
City's road engineering design specification》In to through street, trunk roads flexural strength must not be lower than 5.0MPa requirement.
For the tensile property for further increasing pervious concrete, reinforcement material can be set inside pervious concrete.As in
A kind of permeable armored concrete disclosed in state's patent of invention (publication number CN104446076A), is by pervious concrete and anti-corrosion
Reinforcing bar combines, but since pervious concrete is different from conventional concrete, water of the reinforcing bar in pervious concrete in long term frequent
It is perishable under ringing, so, which needs to carry out anti-corrosion reinforcing bar strict covering package, work of constructing
Skill is complicated.
Summary of the invention
The object of the present invention is to provide a kind of construction is simple, cost economy high tensile pervious concrete sandwich structure and
Preparation method.
High tensile pervious concrete sandwich structure provided by the invention, including pervious concrete main structure body, Tu Gongge
Grid reinforcing layer and adhesive layer；Tensile region is laid with one layer in the pervious concrete main structure body or interval is laid with multilayer TGXG
Reinforcing layer；The upper and lower surface of each Fill Reinforced With Geogrids layer is coated with adhesive layer；It is distributed in the pervious concrete main structure body
Fibrous material；The pervious concrete that fibrous material is distributed with is filled up in the grid-gap of Fill Reinforced With Geogrids layer.The tensile region
Refer to the region of the easy tensile failure of pervious concrete main structure body.
Further, pervious concrete main structure body mixes and stirs preparation by cement, flyash, coarse aggregate, water and water-reducing agent.
As a preferred embodiment, when prepared by pervious concrete main structure body, water-cement ratio is 0.26~0.30；
Cement is marked as ordinary portland cement, dosage 410kg/m3~438kg/m3；
Flyash is level-one flyash, dosage 51kg/m3~77kg/m3；
Coarse aggregate is the graded broken stone of particle size range 5mm~15mm, dosage 1400kg/m3~1800kg/m3；
Water-reducing agent is the liquid high-efficiency water-reducing agent of poly-carboxylic acid that water-reducing rate is not less than 25%, dosage 2kg/m3~8kg/m3。
Preferably, fibrous material length is 18mm~20mm, volume accounts for entire pervious concrete main structure body volume
0.1%~0.3%.
Further, fibrous material is basalt fibre, carbon fiber, polypropylene fibre or glass fibre.
Preferably, Fill Reinforced With Geogrids layer uses polypropylene direction earthwork grille, the two-way geotechnological lattice of used polypropylene
The tensile strength of grid is not less than 40kN/m.
Preferably, adhesive layer uses normal-temperature curing epoxy resin glue.
In the present invention, the tensile region of pervious concrete main structure body is arranged in Fill Reinforced With Geogrids layer, and presses tension direction
When arrangement, i.e. laying Fill Reinforced With Geogrids layer, tension direction and the pervious concrete structure master of Fill Reinforced With Geogrids layer should ensure that
The tension direction of body is consistent.When interval laying multilayer TGXG reinforcing layer, pervious concrete main structure body can be further increased
Tensile strength.Since the compatibility of fibrous material especially basalt fibre and cement is good, in pervious concrete main structure body
It is inside uniformly distributed fibrous material, the cement matrix tensile strength of pervious concrete main structure body can be effectively improved.
The preparation method of high tensile pervious concrete sandwich structure provided by the invention adds when being laid with one layer of TGXG
When muscle layer, including：
Step 1, prefabricated mould, and demarcate in mold the position of pre-buried Fill Reinforced With Geogrids layer；
Step 2, by the pervious concrete that fibrous material is distributed be poured into mold until demarcate position, pour at the same into
Row vibrates；
Step 3, by Fill Reinforced With Geogrids layer lower surface coated with adhesive, before to be bonded dose of solidification, by Fill Reinforced With Geogrids
Layer is layed on the pervious concrete poured, and fills up pervious concrete in the grid-gap of Fill Reinforced With Geogrids layer；It
Afterwards in Fill Reinforced With Geogrids layer upper surface coated with adhesive；
Step 4, before to the binder solidification of Fill Reinforced With Geogrids layer upper surface, distribution is poured on Fill Reinforced With Geogrids layer
There is the pervious concrete of fibrous material, pour while vibrating；
Step 5, maintenance and demoulding.
The preparation method of high tensile pervious concrete sandwich structure provided by the invention, when interval is laid with multilayer geotechnique lattice
When grid reinforcing layer, including：
Step 1, prefabricated mould, and demarcate in mold the position of pre-buried each layer Fill Reinforced With Geogrids layer；
Step 2, the pervious concrete that fibrous material is distributed with is poured into the calibration position of in mold until lowest point, is poured
It builds while vibrating；
Step 3, by Fill Reinforced With Geogrids layer lower surface coated with adhesive, before to be bonded dose of solidification, by Fill Reinforced With Geogrids
Layer is layed on the pervious concrete poured, and fills up pervious concrete in the grid-gap of Fill Reinforced With Geogrids layer；It
Afterwards in Fill Reinforced With Geogrids layer upper surface coated with adhesive；
Step 4, before to the binder solidification of Fill Reinforced With Geogrids layer upper surface, distribution is poured on Fill Reinforced With Geogrids layer
There is the pervious concrete of fibrous material up to the calibration position of current lowest point, pours while vibrating；
Step 5, step 3~4 are repeated, until completing the laying of multilayer TGXG reinforcing layer；
Step 6, maintenance and demoulding.
In step 4, the calibration position of current lowest point refers to, above the Fill Reinforced With Geogrids layer being just laid with, the rigid paving of distance
If the nearest calibration position of Fill Reinforced With Geogrids layer.
It in above two preparation method, pours while vibrating, it is ensured that Fill Reinforced With Geogrids layer and pervious concrete
Combine closely.
In above two preparation method, the pervious concrete of fibrous material is distributed with, obtains with the following method：
The water of half dosage and whole coarse aggregates are poured into blender stirring 45s~60s；
Fibrous material is dispersed in remaining water, the water, cement and flyash that are dispersed with fibrous material are poured into and stirred
The machine of mixing continues to stir 60s~90s；
Water-reducing agent addition blender is continued to stir 30s~45s to get to the pervious concrete that fibrous material is distributed with.
Preferably, when pouring the pervious concrete that fibrous material is distributed with, vibrate using low-frequency vibration table vibration with
The artificial mode combined of vibrating.It is vibrated using low-frequency vibration table, can avoid pervious concrete slurry sinking bottom slurry seal.
Pervious concrete sandwich structure of the present invention has the mechanism of high-tensile as follows：
Firstly, fibrous material especially basalt fibre and the cement matrix compatibility of pervious concrete main structure body are good,
Good bond stress can be formed with cement matrix, adding of fiber material makes cement matrix have good tensile strength；?
The even intracorporal fibrous material of cement base that is distributed in forms three-dimensional grid, and pervious concrete main structure body mechanical property can be made uniform.
Secondly, Fill Reinforced With Geogrids layer is remarkably improved permeable mixed as reinforcement material using the high tensile advantage of itself
The tensile strength of Xtah Crude Clay structure；Meanwhile the two-dimensional grid hole of Fill Reinforced With Geogrids layer is filled by coarse aggregate, so that TGXG
Reinforcing layer and pervious concrete interlocking are an entirety.
In addition, the upper and lower surface of Fill Reinforced With Geogrids layer smears binder, so that Fill Reinforced With Geogrids layer and permeable coagulation
The boundary strength of soil structure improves, and prevents the Relative sliding of Fill Reinforced With Geogrids layer and pervious concrete.
Based on above-mentioned, when pervious concrete sandwich structure by it is curved when, Fill Reinforced With Geogrids layer, adhesive layer, fibrous material
And pervious concrete collective effect, that is, it can guarantee the high-tensile of pervious concrete sandwich structure.
Compared with prior art, the present invention has following features and beneficial effect：
(1) pervious concrete sandwich structure of the present invention is while the water permeable ability for giving full play to pervious concrete, also
It can guarantee good tensile capacity, can be used as a variety of water permeable members of advancing side, application surface is more extensive.
(2) chemical property and good thermal stability of Fill Reinforced With Geogrids layer and fibrous material, will not be in quilt under water environment
It corrodes.
(3) construction is simple and flexibly, cost economy, be suitable for cast-in-situ concrete member, be also applied for precast concrete structure
Part promotes China sponge city to build and is of great significance to the application range for expanding pervious concrete.
Detailed description of the invention
Fig. 1 show the schematic diagram of high tensile pervious concrete sandwich structure in embodiment.
In figure, 1- lower layer pervious concrete, the upper layer 2- pervious concrete, 3- Fill Reinforced With Geogrids layer, 4- basalt fibre,
5- adhesive layer.
Specific embodiment
In order to illustrate more clearly of the present invention and/or technical solution in the prior art, Detailed description of the invention sheet will be compareed below
The specific embodiment of invention.It should be evident that drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing, and obtain other embodiments.
Embodiment 1
Fibrous material uses basalt fibre in the present embodiment.
The present embodiment provides a kind of high tensile pervious concrete sandwich beams structures, as shown in Figure 1, under which includes
Layer pervious concrete 1, upper layer pervious concrete 2, Fill Reinforced With Geogrids layer 3, adhesive layer 5 and to be uniformly distributed in lower layer permeable mixed
Basalt fibre 4 in solidifying soil 1 and upper layer pervious concrete 2.Fill Reinforced With Geogrids layer 3 is laid in away from beam bottom portionPlace, h table
Show deck-molding.Adhesive layer 5 selects normal-temperature curing epoxy resin glue, is evenly applied to the upper and lower surface of Fill Reinforced With Geogrids layer 3.
In the present embodiment, lower layer's pervious concrete 1 and upper layer pervious concrete 2 are prepared using pervious concrete, permeable mixed
Solidifying soil mixes and stirs preparation by cement, flyash, coarse aggregate, water and water-reducing agent.Wherein, cement uses the common silicic acid of label 42.5
Salt cement；Flyash uses level-one flyash；Coarse aggregate uses the quartz gravel of particle size range 10mm~15mm, uses thick bone
The apparent density of material is 2.73g/cm3, tight packing density 1.51g/cm3；Basalt fibre length is 20mm, filament diameter
It is 15 μm, density 2.65g/cm3, elasticity modulus is 95GPa~115GPa, and tensile strength is 3300MPa~4500MPa, is broken
Splitting elongation percentage is 2.4%~3.0%；Water is tap water；Water-reducing agent is the liquid high-efficiency water-reducing agent of poly-carboxylic acid of water-reducing rate 25%.
Lower layer's pervious concrete 1 and upper layer pervious concrete 2 use pervious concrete used by preparing, cooperation is such as
Under：
Cement consumption 438kg/m3, flyash dosage 77kg/m3, coarse aggregate dosage 1480kg/m3, basalt fibre dosage
For 7.8kg/m3, water consumption 137kg/m3, water-reducing agent dosage 2.1kg/m3。
The preparation method of the present embodiment high tensile pervious concrete sandwich beams structure is as follows：
(1) prefabricated mould：
Prefabricated mould according to actual needs, in the present embodiment, prefabricated size is 550mm × 150mm × 150mm mold,
The position of pre-buried Fill Reinforced With Geogrids layer 3 is demarcated in mould inside.
(2) pervious concrete is prepared：
The water of half dosage and whole coarse aggregates are poured into blender stirring 60s；It is later that basalt fibre 4 is evenly dispersed
In remaining water, the water, cement and flyash that are dispersed with basalt fibre 4 are poured into blender and continue to stir 90s；Again
Water-reducing agent is added and stirs 30s, the good pervious concrete of workability can be obtained.
(3) lower layer's pervious concrete 1 is poured：
Pervious concrete point is poured into mold for 2~3 layers, until the calibration position of mold.While pouring, shaken using low frequency
Dynamic platform vibration is vibrated with the method combined of manually vibrating, to avoid slurry sinking bottom slurry seal.
(4) Fill Reinforced With Geogrids layer 3 is installed：
In the present embodiment, Fill Reinforced With Geogrids layer 3 uses tensile strength for the polypropylene direction earthwork grille of 40kN/m.It is first
First, 3 lower surface of Fill Reinforced With Geogrids layer is coated into normal-temperature curing epoxy resin glue.Before normal-temperature curing epoxy resin adhesive curing,
It is put into Fill Reinforced With Geogrids layer 3 is smooth mold and is laid on lower layer's pervious concrete 2.Tile Fill Reinforced With Geogrids layer 3
When, it, gradually will be most in the quadrangle, bottom and grid-gap of Fill Reinforced With Geogrids layer 3 along 3 same direction of Fill Reinforced With Geogrids layer
Pervious concrete and artificial jolt ramming may be filled up, the position of strict control Fill Reinforced With Geogrids layer 3 is answered during this, is located at
It demarcates at position.Finally, coating normal-temperature curing epoxy resin glue being laid with 3 upper surface of Fill Reinforced With Geogrids layer completed.
(5) upper layer pervious concrete 2 is poured：
Before the normal-temperature curing epoxy resin adhesive curing of 3 upper surface of Fill Reinforced With Geogrids layer, by pervious concrete pour to
It on Fill Reinforced With Geogrids layer 3, vibrates when pouring, to ensure that Fill Reinforced With Geogrids layer 3 and pervious concrete are combined closely.
(6) maintenance and demoulding：
20 ± 2 DEG C of temperature, relative humidity 95% environment in conserve for 24 hours, demoulding later.After demoulding, in temperature 20 ± 2
DEG C, relative humidity be 95% environment in continue maintenance to 28 days.
Embodiment 2
The present embodiment is used to provide comparative test and test data.
Make pervious concrete girder construction U, R0、R1With high tensile pervious concrete sandwich beams structure R2、R3.Girder construction U
Without Fill Reinforced With Geogrids layer, adhesive layer and basalt fibre, only pervious concrete main structure body.Girder construction R0Without TGXG
Reinforcing layer and adhesive layer are only uniformly distributed basalt fibre in pervious concrete main structure body.Girder construction R1In permeable coagulation
Tiling has Fill Reinforced With Geogrids layer and is evenly distributed with basalt fibre in soil structure main body, but above and below Fill Reinforced With Geogrids layer
The uncoated adhesive layer in surface.Girder construction R2And R3It is made of 1 method of embodiment, is tiled in pervious concrete main structure body
There is Fill Reinforced With Geogrids layer and be evenly distributed with basalt fibre, and Fill Reinforced With Geogrids layer upper and lower surface coats adhesive layer, but
Girder construction R2In only set single layer TGXG reinforcing layer, girder construction R3Inside set two layers of Fill Reinforced With Geogrids layer.Made by the present embodiment
The match ratio of the used pervious concrete of girder construction is identical with technique.
Girder construction U, R is measured respectively0、R1、R2、R3Compression strength and tensile strength, test result is shown in Table 1.From table 1
It can be seen that high tensile pervious concrete beam R2、R3Flexural strength in 5MPa or more, better than no Fill Reinforced With Geogrids layer and
The girder construction U of basalt fibre, the girder construction R for only adding basalt fibre0And add Fill Reinforced With Geogrids layer and basalt fibre
But the girder construction R of adhesive-less layer1.Compare girder construction R1、R2, normal temperature cure is uniformly coated in Fill Reinforced With Geogrids layer upper and lower surface
After epoxide-resin glue, girder construction R2Tensile strength compared with girder construction R110% is improved, the gain effect of adhesive layer is obvious.Have two layers
The girder construction R of Fill Reinforced With Geogrids layer3Tensile strength up to 6MPa, 88.2% is improved compared with girder construction U, compared with girder construction R0It improves
56.1%, compared with girder construction R130.6% is improved, compared with girder construction R218.5% is improved, therefore, increases tensile region Fill Reinforced With Geogrids layer
The number of plies be remarkably improved its tensile strength.
In addition, by 1 data of table it can also be seen that, the compression strength of high tensile pervious concrete beam of the present invention also more permeable coagulation
Native girder construction is significantly improved.
The compression and tensile strength table of 1 embodiment of table, 2 center sill structure
Be described in above-described embodiment to illustrate the present invention, though text in be illustrated by specific term, not
Can be limited the scope of protection of the present invention with this, be familiar with this technical field personage can understand spirit of the invention with it is right after principle
It changes or modifies and reaches equivalent purpose, and this equivalent change and modification, should all be covered by scope of the claims institute circle
Determine in scope.
Claims (10)
1. high tensile pervious concrete sandwich structure, it is characterized in that：
Including pervious concrete main structure body, Fill Reinforced With Geogrids layer and adhesive layer；
Tensile region is laid with one layer in the pervious concrete main structure body or interval is laid with multilayer TGXG reinforcing layer；
The upper and lower surface of each Fill Reinforced With Geogrids layer is coated with adhesive layer；
Fibrous material is distributed in the pervious concrete main structure body；
The pervious concrete that fibrous material is distributed with is filled up in the grid-gap of Fill Reinforced With Geogrids layer.
2. high tensile pervious concrete sandwich structure as described in claim 1, it is characterized in that：
The pervious concrete main structure body mixes and stirs preparation by cement, flyash, coarse aggregate, water and water-reducing agent.
3. high tensile pervious concrete sandwich structure as claimed in claim 2, it is characterized in that：
When prepared by the pervious concrete main structure body, water-cement ratio is 0.26~0.30；
Cement is marked as ordinary portland cement, dosage 410kg/m3~438kg/m3；
Flyash is level-one flyash, dosage 51kg/m3~77kg/m3；
Coarse aggregate is the graded broken stone of particle size range 5mm~15mm, dosage 1400kg/m3~1800kg/m3；
Water-reducing agent is the liquid high-efficiency water-reducing agent of poly-carboxylic acid that water-reducing rate is not less than 25%, dosage 2kg/m3~8kg/m3。
4. high tensile pervious concrete sandwich structure as described in claim 1, it is characterized in that：
The fibrous material be basalt fibre, carbon fiber, polypropylene fibre or glass fibre, fibrous material length be 18mm~
20mm, volume account for the 0.1%~0.3% of entire pervious concrete main structure body volume.
5. high tensile pervious concrete sandwich structure as described in claim 1, it is characterized in that：
The Fill Reinforced With Geogrids layer uses polypropylene direction earthwork grille, and the tension of used polypropylene direction earthwork grille is strong
Degree is not less than 40kN/m.
6. high tensile pervious concrete sandwich structure as described in claim 1, it is characterized in that：
The adhesive layer uses normal-temperature curing epoxy resin glue.
7. the preparation method of high tensile pervious concrete sandwich structure described in claim 1, it is characterized in that：
When being laid with one layer of Fill Reinforced With Geogrids layer, including：
Step 1, prefabricated mould, and demarcate in mold the position of pre-buried Fill Reinforced With Geogrids layer；
Step 2, the pervious concrete that fibrous material is distributed with is poured into mold until calibration position, pours while shaking
It smashes；
Step 3, Fill Reinforced With Geogrids layer lower surface coated with adhesive is spread Fill Reinforced With Geogrids layer before to be bonded dose of solidification
On the pervious concrete poured, and fill up pervious concrete in the grid-gap of Fill Reinforced With Geogrids layer；Exist later
Fill Reinforced With Geogrids layer upper surface coated with adhesive；
Step 4, it before to the binder solidification of Fill Reinforced With Geogrids layer upper surface, is poured on Fill Reinforced With Geogrids layer and fibre is distributed with
The pervious concrete for tieing up material, pours while vibrating；
Step 5, maintenance and demoulding.
8. the preparation method of high tensile pervious concrete sandwich structure as claimed in claim 7, it is characterized in that：
When interval is laid with multilayer TGXG reinforcing layer, including：
Step 1, prefabricated mould, and demarcate in mold the position of pre-buried each layer Fill Reinforced With Geogrids layer；
Step 2, the pervious concrete that fibrous material is distributed with is poured into the calibration position of in mold until lowest point, is poured same
Shi Jinhang vibrates；
Step 3, Fill Reinforced With Geogrids layer lower surface coated with adhesive is spread Fill Reinforced With Geogrids layer before to be bonded dose of solidification
On the pervious concrete poured, and fill up pervious concrete in the grid-gap of Fill Reinforced With Geogrids layer；Exist later
Fill Reinforced With Geogrids layer upper surface coated with adhesive；
Step 4, it before to the binder solidification of Fill Reinforced With Geogrids layer upper surface, is poured on Fill Reinforced With Geogrids layer and fibre is distributed with
Calibration position of the pervious concrete up to current lowest point for tieing up material, pours while vibrating；
Step 5, step 3~4 are repeated, until completing the laying of multilayer TGXG reinforcing layer；
Step 6, maintenance and demoulding；
In step 4, the calibration position of current lowest point refers to, above the Fill Reinforced With Geogrids layer being just laid with, apart from what is be just laid with
The nearest calibration position of Fill Reinforced With Geogrids layer.
9. preparation method as claimed in claim 7 or 8, it is characterized in that：
The pervious concrete that fibrous material is distributed with, obtains with the following method：
The water of half dosage and whole coarse aggregates are poured into blender stirring 45s~60s；
Fibrous material is dispersed in remaining water, the water, cement and flyash that are dispersed with fibrous material are poured into blender
Continue to stir 60s~90s；
Water-reducing agent addition blender is continued to stir 30s~45s to get to the pervious concrete that fibrous material is distributed with.
10. preparation method as claimed in claim 7 or 8, it is characterized in that：
When pouring the pervious concrete that fibrous material is distributed with, vibrates and combined using low-frequency vibration table vibration with manually vibrating
Mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810756179.1A CN108914734B (en) | 2018-07-11 | 2018-07-11 | High-tensile-strength pervious concrete sandwich structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810756179.1A CN108914734B (en) | 2018-07-11 | 2018-07-11 | High-tensile-strength pervious concrete sandwich structure and preparation method thereof |
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| CN110528774A (en) * | 2019-08-01 | 2019-12-03 | 合肥工业大学 | A kind of novel synthesis concrete material and preparation method |
| CN110552271A (en) * | 2019-09-27 | 2019-12-10 | 佛山科学技术学院 | anti-skid pavement structure and construction method thereof |
| CN114687265A (en) * | 2022-04-18 | 2022-07-01 | 石家庄铁路职业技术学院 | Construction waste recycled aggregate pervious concrete and preparation method thereof |
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| CN114687265A (en) * | 2022-04-18 | 2022-07-01 | 石家庄铁路职业技术学院 | Construction waste recycled aggregate pervious concrete and preparation method thereof |
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| CN108914734B (en) | 2020-07-10 |
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