CN109629377A - A kind of pervious concrete construction method - Google Patents
A kind of pervious concrete construction method Download PDFInfo
- Publication number
- CN109629377A CN109629377A CN201811613460.6A CN201811613460A CN109629377A CN 109629377 A CN109629377 A CN 109629377A CN 201811613460 A CN201811613460 A CN 201811613460A CN 109629377 A CN109629377 A CN 109629377A
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- China
- Prior art keywords
- pervious concrete
- construction method
- concrete
- cement
- concrete construction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
- E01C19/488—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ with rollers for consolidating or finishing combined with tamping, vibrating, pressing or smoothing consolidation or finishing means
-
- 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
- E01C11/226—Coherent pavings
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
- E01C7/325—Joining different layers, e.g. by adhesive layers; Intermediate layers, e.g. for the escape of water vapour, for spreading stresses
Abstract
The invention discloses a kind of pervious concrete construction methods, concrete construction method is as follows: step 1: the selection and proportion of raw material, former material includes P.O 42.5 grades of ordinary portland cement, aggregate, additive, water etc., and pervious concrete construction site arranges special messenger's strict control mixing ratio.The present invention uses 42.5 grades of ordinary portland cements of P.O, the stabilization serous coat of thickness is formed on coarse aggregate surface, the activity of cement is preferably, it can avoid being much higher than concrete strength due to the intensity of aggregate, the destruction of concrete structure occurs often in the phenomenon in the cement rock layers of aggregate interface pieces, by when pervious concrete stirs, PCA high performance water reducing agent of polyocarboxy acid is added, polycarboxylate water-reducer is preferable to cement adaptability, diminishing is high-efficient, conducive to the reduction ratio of mud, improve concrete strength, and polycarboxylate water-reducer retarding time is long, just with construction, and MC methylcellulose is added, intergranular viscous glutinous intensity can be improved, and then improve the overall mechanical properties and wear-resisting property of concrete.
Description
Technical field
The present invention relates to technical field of concrete construction, specially a kind of pervious concrete construction method.
Background technique
Pervious concrete is also known as celluar concrete, non-fine concrete, permeable terrace, be by aggregate, cement, reinforcing agent and
A kind of porous light concrete made of water mixing, it is free of fine aggregate, and pervious concrete coats a thin layer by coarse aggregate surface
Cement slurry mutually bonds and forms the equally distributed honeycomb structure in hole, thus have the characteristics that it is ventilative, permeable and light-weight, thoroughly
Water coagulation soil is the building environmental friendly material that can be used for ground pavement, the concrete road surface being laid with have good water penetration and
Gas permeability, by its application and square, cell road surface, parkway and parking lot etc., can effective recharge of groundwater resource, energy
Pavement noise is reduced, solves the problems, such as urban pavement ponding, and the dirt to environment such as oil compounds on ground can be effectively eliminated
Dye, at the same to improve pedestrian and driving comfort level, alleviate urban heat land effect, keeping ecological balance etc. has good effect,
For existing construction method since the intensity of aggregate is much higher than concrete strength, the destruction of concrete structure occurs often in aggregate circle
In the cement rock layers of surface parts, and the overall mechanical properties of concrete and wear-resisting property are not ideal, therefore it provides one kind is reasonable
Pervious concrete construction method is just particularly important in this field.
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of pervious concrete construction method
Problem.
To achieve the above object, the invention provides the following technical scheme: a kind of pervious concrete construction method, Specific construction
Method is as follows:
Step 1: the selection and proportion of raw material, former material includes 42.5 grades of ordinary portland cements of P.O, aggregate, additional
Agent, water etc., pervious concrete construction site arrange special messenger's strict control mixing ratio；
Step 2: being stirred, and allots raw material by stringent match ratio, throws material according to the regulation feeding sequence of material
Enter blender, and PCA high performance water reducing agent of polyocarboxy acid and MC methylcellulose is added, MC methylcellulose volume is cement weight
0.05%, be stirred by the mixing time of test, mixing time control at 3 minutes or so, coagulation mixture stirs evenly
After can discharge；
Step 3: the material stirred evenly loading agricultural vehicle is transported to paving site；
Step 4: pouring bottom pervious concrete, pave uniformly, vibrated with plate vibrator, time of vibration be not easy it is too long,
It is allowed to the good uniformity and compactness, measurement reaches design thickness again；
Step 5: pouring true qualities pervious concrete, paves uniformly, is vibrated with plate vibrator, stays after measuring underlayer thickness
30mm surface layer out, synchronous casting true qualities pervious concrete surface layer, two layers of time interval that paves must not exceed 4 hours, and surface layer paves
It is real with dedicated low-frequency vibration device shake concora crush after uniformly, then be closed flat with trowel, uneven place wants feed supplement to smooth out, and accomplishes that big face is smooth, equal
It is even, without pit-hole；
Step 6: it is completely covered, is carried out with modeling film, thick agricultural film, colour bar cloth immediately after the completion of surface layer pouring construction process
Moisture conservation maintenance；
Step 7: between maintenance 1-3 days, expansion joint is cut by design requirement, washes away surface and intrapore slurry；
Step 8: can the colourless protective agent of spary after in after pervious concrete surface layer is dry.
Preferably, in step 3, transportational process material need to add colour bar cloth to cover, and colour bar cloth surrounding weight bolt jail to cover
Lid is complete, as far as possible control time and travelling speed, and the control of agricultural vehicle travelling speed is advanced steady in 20km/h or so.
Preferably, aggregate uses the rubble of partial size 4.75-9.5mm, tight packing density 1500kg/m3。
Preferably, the ratio of water and cement is 0.31.
Preferably, contracting slit width degree should can be completed to cut in 5mm, deep 50-60mm the 1-3 days after pervious concrete flushing
Cut processing.
Preferably, after the completion of pervious concrete pavement construction, using the methods of plastic film covering maintenance, in curing period
Between, pervious concrete surface layer must not be open to traffic.
Compared with prior art, the beneficial effects of the present invention are: the present invention uses 42.5 grades of ordinary portland cements of P.O,
28d intensity is 49.0MPa, forms the stabilization serous coat of thickness on coarse aggregate surface, cement consumption is about 350kg/m3, the work of cement
Property it is preferable, can avoid being much higher than concrete strength due to the intensity of aggregate, the destruction of concrete structure occurs often in aggregate circle
Phenomenon in the cement rock layers of surface parts, by the way that PCA high performance water reducing agent of polyocarboxy acid, diminishing is added when pervious concrete stirs
Rate is 18.0%, and polycarboxylate water-reducer is preferable to cement adaptability, and diminishing is high-efficient, is conducive to reduce the ratio of mud, improves concrete
Just with construction and MC methylcellulose is added in intensity, and polycarboxylate water-reducer retarding time is long, and volume is cement weight
0.05%, intergranular viscous glutinous intensity can be improved in the two collective effect, and then improves the overall mechanical properties of concrete and wear-resisting
Performance.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
A kind of pervious concrete construction method provided by the invention, concrete construction method are as follows:
Step 1: the selection and proportion of raw material, former material includes 42.5 grades of ordinary portland cements of P.O, aggregate, additional
Agent, water etc., pervious concrete construction site arrange special messenger's strict control mixing ratio；
Step 2: being stirred, and allots raw material by stringent match ratio, throws material according to the regulation feeding sequence of material
Enter blender, and PCA high performance water reducing agent of polyocarboxy acid and MC methylcellulose is added, MC methylcellulose volume is cement weight
0.05%, be stirred by the mixing time of test, mixing time control at 3 minutes or so, coagulation mixture stirs evenly
After can discharge；
Step 3: the material stirred evenly loading agricultural vehicle is transported to paving site；
Step 4: pouring bottom pervious concrete, pave uniformly, vibrated with plate vibrator, time of vibration be not easy it is too long,
It is allowed to the good uniformity and compactness, measurement reaches design thickness again；
Step 5: pouring true qualities pervious concrete, paves uniformly, is vibrated with plate vibrator, stays after measuring underlayer thickness
30mm surface layer out, synchronous casting true qualities pervious concrete surface layer, two layers of time interval that paves must not exceed 4 hours, and surface layer paves
It is real with dedicated low-frequency vibration device shake concora crush after uniformly, then be closed flat with trowel, uneven place wants feed supplement to smooth out, and accomplishes that big face is smooth, equal
It is even, without pit-hole；
Step 6: it is completely covered, is carried out with modeling film, thick agricultural film, colour bar cloth immediately after the completion of surface layer pouring construction process
Moisture conservation maintenance；
Step 7: between maintenance 1-3 days, expansion joint is cut by design requirement, washes away surface and intrapore slurry；
Step 8: can the colourless protective agent of spary after in after pervious concrete surface layer is dry.
42.5 grades of ordinary portland cements of P.O are used in the present embodiment, and the activity of cement preferably, can avoid due to bone
The intensity of material is much higher than concrete strength, and the destruction of concrete structure occurs often in showing in the cement rock layers of aggregate interface pieces
As by PCA high performance water reducing agent of polyocarboxy acid being added, polycarboxylate water-reducer is to cement adaptability when pervious concrete stirs
Preferably, diminishing is high-efficient, is conducive to reduce the ratio of mud, improves concrete strength, and polycarboxylate water-reducer retarding time is long, just with apply
Work, and MC methylcellulose is added, the two collective effect can be improved intergranular viscous glutinous intensity, and then improve the whole of concrete
Mechanics performance and wear-resisting property, by after in after pervious concrete surface layer is dry can the colourless protective agent of spary, face can be increased
The glossiness and wearability of layer.
Embodiment 2
In step 3, transportational process material need to add colour bar cloth to cover, and colour bar cloth surrounding weight bolt jail makes covering complete,
Time and travelling speed are controlled as far as possible, and the control of agricultural vehicle travelling speed is advanced steady, in 20km/h or so in the present embodiment
In, add the covering of colour bar cloth that can prevent from preventing the moisture in mixture from evaporating during transportation, passes through regulation speed and traveling
Stability can prevent mixture from the phenomenon that isolation occur because of rocking.
Embodiment 3
Aggregate uses the rubble of partial size 4.75-9.5mm, tight packing density 1500kg/m3, in the present embodiment, slightly
Aggregate is smaller using diameter grain, the aggregate of single gradation, makes to push away in long-pending aggregate containing a large amount of gap, realizes that concrete is good
It is aqueous.
Embodiment 4
The ratio of water and cement is 0.31, and in the present embodiment, when the ratio of water and cement is too small, cement slurry is feeding-up, compared with
Hardly possible is equably wrapped in coarse aggregate particle surface, is unfavorable for the raising of intensity, and when the ratio of water and cement is excessive, cement slurry then can
It is dilute, it can be slided from particles of aggregates surface, keep the cement slurry for wrapping up coarse aggregate particle surface excessively thin, be unfavorable for the raising of intensity, pass through
Test certification, it is best than being 0,31.
Embodiment 5
Contracting slit width degree should in 5mm, deep 50-60mm, can pervious concrete flushing after completion cutting process in the 1-3 days,
In the present embodiment, contracting slit width degree should be in 5mm, and deep 50-60mm effect is advisable, if cutting again to pervious concrete more than 3 days
Cut processing, the phenomenon that pervious concrete will appear crack and fracture.
Embodiment 6
It is permeable mixed during maintenance using the methods of plastic film covering maintenance after the completion of pervious concrete pavement construction
Solidifying soil surface layer must not be open to traffic, and in the present embodiment, the pervious concrete after construction will carry out the protection of finished product, prevent dirty
Dye, is influenced the quality and permeability rate of finished product, prevents vehicle pass-through, rolled with anti-vehicle and road is caused to damage.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any label in claim should not be construed as limiting the claims involved.
Claims (6)
1. a kind of pervious concrete construction method, it is characterised in that: concrete construction method is as follows:
Step 1: the selection and proportion of raw material, former material include 42.5 grades of ordinary portland cements, aggregate, additive, water of P.O
Deng pervious concrete construction site arrangement special messenger's strict control mixing ratio；
Step 2: being stirred, and allots raw material by stringent match ratio, stirs material investment according to the regulation feeding sequence of material
Machine is mixed, and PCA high performance water reducing agent of polyocarboxy acid and MC methylcellulose is added, MC methylcellulose volume is cement weight
0.05%, it is stirred by the mixing time of test, mixing time is controlled at 3 minutes or so, and coagulation mixture is after mixing evenly
It can discharge；
Step 3: the material stirred evenly loading agricultural vehicle is transported to paving site；
Step 4: pouring bottom pervious concrete, paves uniformly, is vibrated with plate vibrator, and time of vibration is not easy too long, is allowed to
There are the good uniformity and compactness, measurement reaches design thickness again；
Step 5: pouring true qualities pervious concrete, paves uniformly, is vibrated with plate vibrator, reserves after measuring underlayer thickness
30mm surface layer, synchronous casting true qualities pervious concrete surface layer, two layers of time interval that paves must not exceed 4 hours, and surface layer paves
It is real with dedicated low-frequency vibration device shake concora crush after even, then be closed flat with trowel, uneven place wants feed supplement to smooth out, and accomplishes that big face is smooth, equal
It is even, without pit-hole；
Step 6: it is completely covered, is covered with modeling film, thick agricultural film, colour bar cloth immediately after the completion of surface layer pouring construction process
Water-preserving curing；
Step 7: between maintenance 1-3 days, expansion joint is cut by design requirement, washes away surface and intrapore slurry；
Step 8: can the colourless protective agent of spary after in after pervious concrete surface layer is dry.
2. a kind of pervious concrete construction method according to claim 1, it is characterised in that: in step 3, transportational process
Material need to add colour bar cloth to cover, and colour bar cloth surrounding weight bolt jail makes covering complete, as far as possible control time and travelling speed, agriculture
With the control of vehicle travelling speed in 20km/h or so, advance steady.
3. a kind of pervious concrete construction method according to claim 1, it is characterised in that: aggregate uses partial size 4.75-
The rubble of 9.5mm, tight packing density 1500kg/m3。
4. a kind of pervious concrete construction method according to claim 1, it is characterised in that: the ratio of water and cement is
0.31。
5. a kind of pervious concrete construction method according to claim 1, it is characterised in that: contracting slit width degree should be deep in 5mm
50-60mm, can be in the completion cutting process in the 1-3 days after pervious concrete flushing.
6. a kind of pervious concrete construction method according to claim 1, it is characterised in that: pervious concrete pavement construction
After the completion, using the methods of plastic film covering maintenance, during maintenance, pervious concrete surface layer must not be open to traffic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811613460.6A CN109629377A (en) | 2018-12-27 | 2018-12-27 | A kind of pervious concrete construction method |
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| CN201811613460.6A CN109629377A (en) | 2018-12-27 | 2018-12-27 | A kind of pervious concrete construction method |
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Cited By (4)
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| CN111455765A (en) * | 2020-03-31 | 2020-07-28 | 中电建十一局工程有限公司 | Mechanical rolling construction method for pervious concrete |
| CN113912337A (en) * | 2021-11-17 | 2022-01-11 | 中交二公局第三工程有限公司 | Non-cracking pervious concrete and preparation method thereof |
| CN114953099A (en) * | 2022-06-06 | 2022-08-30 | 哈尔滨工业大学 | Forming method for realizing independent regulation and control of cement-based material transmission and mechanical property |
| CN115286313A (en) * | 2022-07-20 | 2022-11-04 | 泸州临港思源混凝土有限公司 | High-strength sand-free concrete and preparation method thereof |
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