CN110144790A - A kind of construction method of water permeable concrete - Google Patents
A kind of construction method of water permeable concrete Download PDFInfo
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- CN110144790A CN110144790A CN201910367312.9A CN201910367312A CN110144790A CN 110144790 A CN110144790 A CN 110144790A CN 201910367312 A CN201910367312 A CN 201910367312A CN 110144790 A CN110144790 A CN 110144790A
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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
-
- 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
- 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
-
- 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
- E01C19/50—Removable forms or shutterings for road-building purposes; Devices or arrangements for forming individual paving elements, e.g. kerbs, in situ
- E01C19/502—Removable forms or shutterings, e.g. side forms; Removable supporting or anchoring means therefor, e.g. stakes
-
- 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
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/03—Arrangements for curing paving; Devices for applying curing means; Devices for laying prefabricated underlay, e.g. sheets, membranes; Protecting paving under construction or while curing, e.g. use of tents
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to the construction method of water permeable concrete, main includes that pave construction, maintenance, form removal, joint-cutting joint filling, road surface of basic inspections, formwork erection, concrete stirring, finished product material transport, pervious concrete is painted the processes such as cover, product protection.Permeable concrete ratio: different road positions are directed to, bearing requirements, the permeability coefficient of water-permeable cement concrete of design, intensity determine the ratio of mud with porosity difference；It paves when constructing, expansion joint (E.J.) position should be first determined in structure sheaf construction, is set together by the every 30-40m of predetermined size, and contracting seam is often replaced using small expansion joint (E.J.) in construction, 5-10m of conventional length should set small expansion joint (E.J.) together, mark, indwelling as requested, pine spread out and put on it is flat after tamped with low frequency plate compactor, compacting rear surface should meet design altitude, to guarantee the construction thickness of surface layer, it is required that smooth, closely knit, the Oak Tree plastic material of the expansion joint (E.J.) insertion sizing of indwelling.The obtained road surface of the application construction method have the characteristics that science, rationally, guarantee the quality, be beautiful, is durable.
Description
Technical field
The invention belongs to the construction methods of water permeable concrete.
Background technique
Water permeable concrete is one kind of porous concrete, and common water permeable concrete has cement water permeable concrete, pitch permeable according to composition material point
Concrete etc..Permeable concrete according to appearance be divided into common pervious concrete, colorful water-permeable concrete and undisguisedly expect it is permeable mixed
Solidifying soil surface etc..It is permeable that common pervious concrete pavement, landscape pervious concrete pavement and carrying can be also divided by function simultaneously
Concrete etc..
Pervious concrete has water penetration by what a series of holes being connected and solid concrete part skeleton formed
Porous structure concrete, in construction mainly by be wrapped in aggregate surface cementing material slurry harden after, particles of aggregates
It is cemented together, reach a kind of construction method of concrete special of concrete design strength.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of construction method of water permeable concrete, institute for the above-mentioned prior art
The arrangement and method for construction of the pervious concrete pavement of design, have the characteristics that science, rationally, guarantee the quality, be beautiful, is durable.
The present invention solves the above problems used technical solution are as follows: a kind of construction method of water permeable concrete, process are as follows
One, the preparation before pervious concrete construction: refer to that pervious concrete construction preceding working procedure is completed, blotter
Thickness and compactness reach requirement, dypass tooth constructs as required terminates, and has passed through examination, before meeting pervious concrete construction
Phase preparation；
Two, construction procedure
2.1 permeable concrete ratios: being directed to different road positions, and the cement concrete with water permeability of bearing requirements, design is permeable
Coefficient, intensity determine the ratio of mud with porosity difference；According to the design strength of C20~C30, in mass ratio example ingredient: cement
358~398 parts；1650 parts of stone；Reinforcing agent 10~15；Water 130~145；
2.2 bases check: construction personnel first checks basis, notices that height, compactness problem are not inconsistent part
It closes and requires to be handled；
2.3 formwork erections: judged whether to need formwork erection according to project actual demand, such as belong to the case where needing formwork erection, constructor
Member must carry out formwork erection work by design requirement first, notably height, verticality flashing gradient problem during formwork erection；
The stirring of 2.4 concrete
The stirring of (2.4.1) water permeable concrete, which feeds intake, strictly to be carried out by match ratio, and feeding intake must weigh for the first time, can then feed intake
It marks in mechanical container, feeds intake by standard reference；
(2.4.2) feeding sequence
In line with first throwing a part of stone in mixer hopper, then cement, additive are thrown, additive refers to reinforcing agent, then again
Remaining stone is thrown, i.e., holding cement, additive are placed on stone middle position；
(2.4.3) stirring means
The 20~40% of water consumption is first put in empty machine, empty machine stirs, then promotes hopper feed, adds several times in stirring
Water, until the ratio of mud is completed to measure, it is desirable that stir evenly, meet construction requirement, the concrete hand of suitable water consumption stirring can be held
Agglomerating, after hand unclamps, it is less that watch face adsorbs slurry；
(2.4.4) mixing time
From discharging is dosed into, SJ350 type blender is 4 minutes；SJ500 type forced mixer is 3.5 minutes；
The transport of 2.5 finished product materials
The finished product material being stirred should transport to construction site after going out machine in time, and transporting to site operation within 10 minutes is advisable；Such as
When meeting temperature higher than 30 DEG C, concrete must take covering to keep moisture, prevent moisture from evaporating, influence construction quality；It is permeable mixed
Solidifying soil construction regulations regulation, pervious concrete went out machine to working face haulage time no more than 30 minutes；
2.6 pervious concretes pave construction
Since the heat expansion of permeable concrete is bigger than cement concrete, expansion joint (E.J.) position should be first determined in structure sheaf construction
It sets, is set together by the every 30-40m of predetermined size, contracting seam is often replaced using small expansion joint (E.J.) in construction, 5-10m of conventional length should be set
Small expansion joint (E.J.) together, marks, indwelling as requested, pine spread out and put on it is flat after tamped with low frequency plate compactor, compacting rear surface should meet
Design altitude, to guarantee the construction thickness of surface layer, it is desirable that smooth, closely knit, the Oak Tree plastic material of the expansion joint (E.J.) insertion sizing of indwelling；
Surface construction must calculate pine and spread height, and rationally control height can make the pavement material or mould that after being compacted with periphery
Version height is consistent, meets the design altitude of road deck, pine spread out and put on it is flat after rolling carried out using low frequency hydraulic workstation roll, with
The density for guaranteeing pavement concrete, to guarantee the intensity of concrete；Rolling polishes mechanical mill with concrete in time after rolling
Flat, the place that periphery sanding machine can not be ground to manually smoothes out, it is desirable that surfacing, stone are evenly distributed, and no missing stone is existing
As forbidding having product slurry phenomenon, without hydraulic, the requirement pressure of workbench polishes whole, guarantees concrete strength；
2.7 maintenance
Pervious concrete maintenance work after molding is the important link of pervious concrete construction, due to pervious concrete
It is inside added to organic cementing material, the early strength of concrete increases comparatively fast, needs to conserve in time after the completion of surface layer, the method taken
It is plastic film all standing protection, i.e. the plastic film on surface layer periphery is greater than surface layer 50cm or more, and the overlap joint of plastic film is wide
Degree meets 20cm or more, and sprinkles water and moisten on the film covered, is uniformly covered on film in surface layer, it is ensured that closed complete
It is good, it leaves no gaps；
Film cannot have damage phenomenon, and local damage can directly result in maintenance burst, can generate sub- phenomenon, permeable coagulation
The curing cycle of soil is two weeks, and daily water seasoning must assure that more than twice, and indispensable, the optimum efficiency of maintenance is film
Interior a large amount of dewdrops are best；Film covering curing must fasten, and prevent wind from film being caused to hike up, and must not have hollow existing
As causing local pervious concrete to damage；All films cover place that is not tight or hiking up, it should pay special attention to, it all can be different
The sand of degree falls son, causes the flaw of product.
2.8 form removal
After maintenance expires, after checking that the intensity of pervious concrete has reached 50%-70%, it can removed with form removal
In the process, side, the angle that must not damage concrete road surface, will keep pervious concrete block intact；
2.9 joint-cuttings, joint filling
(2 week of winter 10OC or less, 10 days spring and autumn day, summer when pervious concrete intensity reaches 50%-70% or so
It is 3-5 days), mechanical joint-cutting can be carried out, the thickness of mechanical joint-cutting must satisfy the perforation of surface thickness, must use water after joint-cutting
The mountain flour product slurry in seam is rinsed in time, is guaranteed in seam completely without dust, and the mud of concrete surface caused by when joint-cutting is rushed
Wash clean keeps the sealing of structure sheaf and surface layer unanimous between the higher and lower levels when switching to expansion joint (E.J.), must not the fissure of displacement, the setting of monolithic contracting seam area is first
First meet design requirement, secondly must must not exceed 30m2 or more by defined 25m2-30m2 is standardized, most preferably be controlled at
Within 25m2, the excessive concrete topping that will cause of area is cracked, or even has the generation of hollowing phenomenon, is adopted to filling for expansion joint (E.J.)
It takes the flexible glue material filleting of sizing, fills out the foams plastic material of sizing in contracting seam, seam surface when joint filling reserves 2-3mm high
Degree is then injected into structure glue closing, and embedding complete seam width is consistent, and surface is straight, and perception is good；It it requires that caulking material must
Must bonding force it is strong, resilience is good, adapts to the expansion and contraction of concrete, and not soluble in water, impermeable, ageing-resistant, when high temperature
It does not trickle, not embrittlement when low temperature.
Paint cover on 2.10 road surfaces
Pavement overlay agent is painted using polyurethanes road surface, and this paint layer is bright in luster, perception is good, acidproof, alkaline-resisting, uvioresistant
Line ability is compared with strong, endurance quality is good.Spray coating mechanical is suitable for using airless sprayer, and an airless sprayer works 8 hours daily
Spray painting area 700-800m2 or so can be completed, every square metre of consumption paint amount is 0.2KG (containing curing agent)+diluent.Light road surface
Consumption paint amount can be somewhat larger.Because light hiding rare is poor, feed consumption is larger.The preceding working procedure material for coping with periphery when spray painting gives
With protection, tape-stripping can be used, it is also possible to which steel (wood) plate blocks.It must accomplish that edge to edge is neat, lines are straight, beautiful big
Side.To guarantee that proportion is unified when paint, prevent color difference phenomenon, currently, cover agent majority considers that cost is larger, using single group
The agent of part cover enters plus dilution dilution agent.The quality of cover agent spraying must satisfy: not reveal the exact details, mechanically spraying is smooth, guarantees to cover
Rate meets equalization request；For lap width when spraying in 5cm -8cm, running speed is uniform；If using the solidification of two-component
When agent, import curing agent is preferentially to select.
2.11 product protection
Pervious concrete pavement is in construction and maintenance processes, it is necessary to focus on finished product protection, road surface should strictly forbid trampling.
Enclosing is arranged around road surface after shaping for animal walking, vehicle driving, arranges coloured flag, does distinguishing mark, and arrange special messenger's value
It keeps and product is effectively protected.Pervious concrete is different, and repairing is difficult, and surface is not easy to be bonded to original level, institute
To adhere to final acceptance of construction always to terminate after being delivered for use with product protection.
Specifically, step (1) Job readiness can be divided into following procedures:
(1), construction site has reached " three supplies and one leveling ", i.e., road is logical, water is logical, electricity is logical, levelling of the land, and construction site meets original
Material heap puts condition, and equipment installation has been completed, and a variety of construction machineries, which are marched into the arena, meets construction requirement；
(2), bottom, base layer construction have reached designed elevation, and multinomial buried pipeline ground by pre-buried end, base
Pressure terminates, smooth；
(3), construction personnel's composition is marched into the arena, and meets the personnel demand of construction；
(4), materials arrival, it is qualified by examining, meet execution conditions.
Specifically, pervious concrete pavement construction paves in step (2.6), and there are two types of construction methods: the first is continuously to apply
Engineering method, structure sheaf pour single volume meet contracting seam require when, pave surface layer immediately, and this construction method makes structure sheaf and face
Layer is firmly bonded hollowing phenomenon is less likely to occur, but is easy to damage structure sheaf by pressure, it cannot be guaranteed that structure sheaf concrete strength, when construction
Structure sheaf should not be damaged as far as possible；
Another method is compartment construction method, is exactly first whole laying structure layer, then integral construction surface layer, this method
It can guarantee structure sheaf concrete strength, crossed construction influence is small, can also reduce Mixing Machine, reduces mechanical investment and manually throws
Enter, but adhesive layer must be done using plain-water slurry in surface construction in the case where structure layer surface sufficiently waters wet,
Prevent hollowing phenomenon from occurring.
When pervious concrete construction periphery is forming belt, the protection work to preceding working procedure product should be paid the utmost attention to, is adopted
It is protected with the method for plastic film bedding.
Compared with the prior art, the advantages of the present invention are as follows: a kind of construction method of water permeable concrete is provided, it is saturating for road surface
Scientific and rational arrangement and method for construction is given in the laying of water concrete, improves the laying efficiency on road surface, extends the service life of product, reduction is done over again
Number reduces maintenance cost.
Specific embodiment
Present invention is further described in detail with reference to embodiments.
The present embodiment is related to the construction method of water permeable concrete
One, institutional framework
One set of construction teams and groups based on project leader, plan investment technical staff's name, auxiliary work post personnel name, management
Teams and groups site operation technical staff1Name, Quality Controller1Name, security official1Name, mechanician, electrician are each1Name, entire teams and groups' name,
Meets the needs of site operation personnel.
Two, prepare before construction
Preparation before pervious concrete construction: refer to that pervious concrete construction preceding working procedure completes (blotter thickness
Degree and compactness reach requirement, dypass tooth, and construction terminates as required), pass through examination, before meeting pervious concrete construction
Phase preparation.This Job readiness can be divided into following procedures:
1, construction site has reached " three supplies and one leveling ", i.e., road is logical, water is logical, electricity is logical, levelling of the land.Construction site meets raw material
Stacking condition, equipment installation have been completed, and a variety of construction machineries, which are marched into the arena, meets construction requirement.
2, bottom, base layer construction have reached designed elevation, and pre-buried end, base have rolled multinomial buried pipeline
Terminate, it is smooth.(construction surface is ready, meets execution conditions)
3, construction personnel's composition is marched into the arena, and meets the personnel demand of construction.
4, materials arrival, it is qualified by examining, meet execution conditions.
Three, construction machinery
It is as follows according to the quasi- investment machinery equipment of the projects amount:
1, SJ350 drum mixer 1 (or SJ500 blender)；
2,1, forklift；
3, motor tricycle transport vehicle 2；
4, sanding machine 4；
5, grooving machine 1；
6, vibratory plate compactor 2；
7, without gas blowout mechanism of qi 2；
8, other hand-operated tools are several.
Four, material is put into
1, cement requires preferably to use 42.5 according to concrete design strength#Ordinary portland cement.
2, structure sheaf stone requires quality hard, durable, clean.Cobble-stone diameter can (specific grain 2.4-13.2mm's
Diameter size is subject to Design Requirement Drawing).Cobble-stone diameter particle is uniform, meets intensity requirement.Check surface layer stone content of stone powder,
Scene can be examined by artificial means, i.e., first moistened in water with hand, hand is put in stone heap, a stone is picked up, after relieving
How much is the content of stone powder that inspection is adsorbed in gesture and facial expression, determines whether to be suitable for construction with perception method.It is required that one hand is put in stone
30cm is upward.3, water permeable concrete additive is specialist additive, checks that additive has a free from dampness, live actual weight whether with
Packing material mark meets.4, concrete mixing water uses cleaning water.
Five, construction technology
1, permeable concrete ratio: referring to suggestion match ratio table, by taking pervious concrete match ratio C25 as an example: cement 378kg；
Stone 1650kg；Reinforcing agent 12kg；Water 137kg；
Suggest match ratio table in eco-concrete road surface:
Unit: kg
2, basis checks: construction personnel first checks basis, notices that height, compactness problem are not inconsistent part
It closes and requires to be handled
3, formwork erection
Construction personnel must carry out formwork erection work by design requirement first, notably height, verticality flashing during formwork erection
Gradient problem (judges whether to need formwork erection) according to project actual demand.
4, concrete stirs
The stirring of 4.1 water permeable concretes feeds intake and must strictly carry out by match ratio, wrong must not throw, miscarrying.Feeding intake for the first time must mistake
Pound, can then mark in the mechanical container that feeds intake, and feed intake by standard reference.
4.2 feeding sequence
In line with first throwing 1/2 stone in mixer hopper, then cement, additive are thrown, then separately launches 1/2 stone, that is, keep
Cement, additive are placed on stone middle position.
4.3 stirring means
The 20% of water consumption is first put in empty machine, empty machine stirs, then promotes hopper feed.Add water several times in stirring,
Until the ratio of mud is completed to measure.It is required that stirring evenly, meet construction requirement.The concrete hand of suitable water consumption stirring can be held into
Group, after hand unclamps, it is less that watch face adsorbs slurry.
4.4 mixing time
From discharging is dosed into, under normal circumstances, JZ350 type blender is 4 minutes；JS500 type forced mixer is 3.5
Minute.
5, finished product material transports
The finished product material being stirred should transport to construction site after going out machine in time, and transporting to site operation within 10 minutes is advisable.Such as
When meeting temperature higher than 30 DEG C, concrete must take covering to keep moisture, prevent moisture from evaporating, influence construction quality.It is permeable mixed
Solidifying soil construction regulations regulation, pervious concrete went out machine to working face haulage time no more than 30 minutes.
6, pervious concrete paves construction
Pervious concrete paves construction, should preferentially determine expansion joint (E.J.) the position, (heat of permeable concrete in structure sheaf construction
Swollen property is bigger than cement concrete) by predetermined size, (every 30m or so is set together, often replaces contracting seam using small expansion joint (E.J.) in construction, often
Rule length 5m or so should set small expansion joint (E.J.) together) mark, indwelling as requested, pine spread out and put on it is flat after tamped with low frequency plate compactor,
Compacting rear surface should meet design altitude, to guarantee the construction thickness of surface layer, it is desirable that and it is smooth, it is closely knit.The expansion joint (E.J.) insertion of indwelling is fixed
The Oak Tree plastic material of type.
Surface construction must calculate pine paving height, rationally control height can make after compacting with the pavement material on periphery (or
Template) height is consistent, meet the design altitude of road deck, pine spread out and put on it is flat after rolling stone roller carried out using low frequency hydraulic workstation
Pressure, to guarantee the density of pavement concrete, to guarantee the intensity of concrete.Rolling uses concrete sanding machine after rolling in time
Tool polishes, and the place that periphery sanding machine can not be ground to manually smoothes out, it is desirable that surfacing, stone are evenly distributed, no missing stone
Sub- phenomenon forbids having product slurry phenomenon, without hydraulic.The requirement pressure of workbench polishes whole, guarantee concrete strength.
Pervious concrete pavement construction paves, and there are two types of construction methods: the first is continuous construction, is poured in structure sheaf
Single volume meets contracting seam when requiring, and pave surface layer immediately, and this construction method is firmly bonded structure sheaf with surface layer to be not easy
Hollowing phenomenon occurs, but is easy to damage structure sheaf by pressure, it cannot be guaranteed that structure sheaf concrete strength, when construction should not damage structure as far as possible
Layer.Another method is compartment construction method, is exactly morning laying structure layer, surface layer of constructing afternoon,.This method can guarantee knot
Structure layer concrete intensity, crossed construction influence is small, can also reduce Mixing Machine, reduces mechanical investment and manually investment.But
Adhesive layer must be done using plain-water slurry, prevent sky in surface construction in the case where structure layer surface sufficiently waters wet
Rouse phenomenon.
When pervious concrete construction periphery is forming belt, the protection work to preceding working procedure product should be paid the utmost attention to, it can
It is protected using the method for plastic film bedding.
7, it conserves
Pervious concrete maintenance work after molding is the important link of pervious concrete construction, due to pervious concrete
It is inside added to organic cementing material, the early strength of concrete increases comparatively fast, needs to conserve in time after the completion of surface layer.What we took
Method is plastic film all standing protection, i.e. the plastic film on surface layer periphery is greater than surface layer 50cm or more, and plastic film is taken
It connects width and meets 20cm or more, and sprinkle water and moisten on the film covered, be uniformly covered on film in level.Accomplish close
It closes intact, leaves no gaps.
And film cannot have damage phenomenon, and local damage directly results in maintenance burst, can generate sub- phenomenon, permeable mixed
The curing cycle for coagulating soil is two weeks, and daily water seasoning must assure that more than twice, and indispensable, the optimum efficiency of maintenance is thin
A large amount of dewdrops are best in film.Film covering curing must fasten, and prevent wind from film being caused to hike up, and must not have hollow existing
As causing local pervious concrete to damage.All films cover place that is not tight or hiking up, it should pay special attention to, it all can be different
The sand of degree falls son, causes the flaw of product.
8, form removal
After maintenance expires, after checking that the intensity of pervious concrete reaches 50%-70%, form removal can be carried out,
In demolishing process, side, the angle of concrete road surface must not be damaged, to keep pervious concrete block intact.
9, joint-cutting, joint filling
(10 DEG C of winter or less 2 weeks, 10 days spring and autumn day, summer when pervious concrete intensity reaches 50%-70% or so
It is 3-5 days), mechanical joint-cutting can be carried out.The thickness of mechanical joint-cutting must satisfy the perforation of surface thickness.Water must be used after joint-cutting
The mountain flour product slurry in seam is rinsed in time, is guaranteed in seam completely without dust, and the mud of concrete surface caused by when joint-cutting is rushed
Wash clean.Keep the sealing of structure sheaf and surface layer unanimous between the higher and lower levels when switching to expansion joint (E.J.), it must not the fissure of displacement.The setting of monolithic contracting seam area is first
First meet design requirement, it secondly must be by 25m as defined in specification2—30m2, must not exceed 30m2More than, most preferably it is controlled at
25m2Within, the excessive concrete topping that will cause of area cracks, or even has the generation of hollowing phenomenon.Filling for expansion joint (E.J.) is adopted
It takes the flexible glue material filleting of sizing, fills out the foams plastic material of sizing in contracting seam, seam surface when joint filling reserves 2-3mm high
Degree is then injected into structure glue closing, and embedding complete seam width is consistent, and surface is straight, and perception is good, it requires that caulking material must
Must bonding force it is strong, resilience is good, adapts to the expansion and contraction of concrete, and not soluble in water, impermeable, ageing-resistant, when high temperature
It does not trickle, not embrittlement when low temperature.
10, paint cover on road surface
Pavement overlay agent is painted using polyurethanes road surface, and this paint layer is bright in luster, perception is good, acidproof, alkaline-resisting, uvioresistant
Line ability is compared with strong, endurance quality is good.Spray coating mechanical is suitable for using airless sprayer, and an airless sprayer works 8 hours daily
It can complete spray painting area 700-800m2Left and right, every square metre of unit consumption paint amount are 0.2kg (containing curing agent)+diluent.Light color
Road surface consumption paint amount can be somewhat larger.Because light hiding rare is poor, feed consumption is larger.The preceding working procedure material on periphery is coped with when spray painting
Material is protected, and tape-stripping can be used, it is also possible to which steel (wood) plate blocks.It must accomplish that edge to edge is neat, lines are straight, beautiful
It is generous.To guarantee that proportion is unified when paint, prevent color difference phenomenon, currently, cover agent majority considers that cost is larger, using list
The agent of component cover enters plus dilution dilution agent.The quality of cover agent spraying must satisfy three primary conditions.1, it does not reveal the exact details: 2, mechanical
Spraying is smooth: 3, being to guarantee hiding rare, meet equalization request.Lap width when spraying is between 5cm -8cm.Running speed
Uniformly, if using two-component curing agent when, import curing agent is preferentially to select.
11, product protection
Pervious concrete pavement construction and maintenance processes in, it is necessary to focus on finished product protection, should strictly forbid on road surface on
People, animal walking, vehicle driving, way are that enclosing is arranged around road surface after shaping, arrange coloured flag, do distinguishing mark, and
Staff on duty is arranged to effectively protect product.Pervious concrete is different, and repairing is difficult, and surface is not easy to be bonded to original
Level, so product protection will adhere to final acceptance of construction terminating after being delivered for use always.
Seven, safety guarantee
Safety in production is carried out in the construction process, prevented unexpected thing side from occurring, enhanced awareness of safety, prevent from touching
The generation of the disasters such as electricity, mechanical wounding, traffic accident.
Eight, seasonal construction
Summer, rainy season, winter
1. hot weather construction prepares
1.1 reasonable arrangement hot weather construction projects divide correct construction section, and summer is in the gold period of construction stage, answers
The reasonable arrangement duration, as far as possible construction time content arrangement in summer.
1.2 prepare sufficient reducing temperature of heatstroke prevention articles.
1.3 pay close attention to weather condition, and reinforcement is contacted with meteorological department.
2. summer high temperature measure for construction safety
2.1 reinforce Knowledge Promotion of preventing heatstroke and lower the temperature to worker.
2.2 adjustment activity durations, the maximum temperature time should be avoided.Temperature, which is higher than 36 DEG C, to be forbidden to construct.
2.3 building-sites are equipped with sufficient reducing temperature of heatstroke prevention drug, boil the sunstroke prevention drinks such as herbal tea, ginger tea, sweet mung bean soup daily and supply
Operating personnel drinks.
2.4 blenders, material processing space should set up canopy of enjoying the cool in some shade, and avoid direct sunlight, and often watering cooling.
The worker of 2.5 high-temperature operations periodically arrives hospital and checks, all hypertension, heart diseases etc. suffered from are forbidden to make at high temperature
Industry.
3. rainy season construction
3.1 control flood and drain flooded fields, and carry out live drainage works, pay close attention to weather condition, should carry out irrigation canals and ditches before rainy season set and open
It digs, gets out pumping equipment, prevent place ponding and foundation trench soaked, cause damages.
3.2 reinforce construction management, carry out Pluvial safety education, conscientiously work out Pluvial technology measure, conscientiously implement.Add
By force to the safety education of worker, prevent various accidents from occurring.
4. winter construction
It should prevent from having in aggregate when 4.1 winter construction and freeze block or other impurities.And antifreezing agent is added according to engineering characteristic, it is early
Strong agent etc..Concrete mixing time is appropriately extended, farther away should cover in concrete of haul distance keeps the temperature, according to temperature after material molding
Height situation cover thermal insulation material do antifreezing measures, prevent heat loss, prevent concrete surface icing box-shaped as.
Claims (4)
1. a kind of construction method of water permeable concrete, it is characterised in that: process is as follows
One, the preparation before pervious concrete construction: refer to that pervious concrete construction preceding working procedure is completed, blotter thickness
And compactness reach requirement, dypass tooth as required construction terminate, pass through examinations, meet pervious concrete construct early period standard
Standby work；
Two, construction procedure
2.1 permeable concrete ratios: different road positions, bearing requirements, the permeable system of the cement concrete with water permeability of design are directed to
Number, intensity determine the ratio of mud with porosity difference；According to the design strength of C20~C30, in mass ratio example ingredient: cement 358
~398 parts；1650 parts of stone；Reinforcing agent 10~15；Water 130~145；
2.2 bases check: construction personnel first checks basis, notices that height, compactness problem do not meet part
It is required that being handled；
2.3 formwork erections: judging whether to need formwork erection according to project actual demand, such as belongs to the case where needing formwork erection, and construction personnel is first
First formwork erection work must be carried out by design requirement, notably height, verticality flashing gradient problem during formwork erection；
The stirring of 2.4 concrete
The stirring of (2.4.1) water permeable concrete, which feeds intake, strictly to be carried out by match ratio, and feeding intake must weigh for the first time, then can be in the machinery that feeds intake
It marks in container, feeds intake by standard reference；
(2.4.2) feeding sequence
In line with first throwing a part of stone in mixer hopper, then cement, additive are thrown, additive refers to reinforcing agent, then throws again surplus
Under stone, i.e. holding cement, additive be placed on stone middle position；
(2.4.3) stirring means
The 20~40% of water consumption is first put in empty machine, empty machine stirs, then promotes hopper feed, add water several times in stirring,
Until the ratio of mud is completed to measure, it is desirable that stir evenly, meet construction requirement, the concrete hand of suitable water consumption stirring can be held into
Group, after hand unclamps, it is less that watch face adsorbs slurry；
(2.4.4) mixing time
From discharging is dosed into, SJ350 type blender is 4 minutes；SJ500 type forced mixer is 3.5 minutes；
The transport of 2.5 finished product materials
The finished product material being stirred should transport to construction site after going out machine in time, and transporting to site operation within 10 minutes is advisable；Such as gas
When temperature is higher than 30 DEG C, concrete must take covering to keep moisture, prevent moisture from evaporating, influence construction quality；
2.6 pervious concretes pave construction
Since the heat expansion of permeable concrete is bigger than cement concrete, expansion joint (E.J.) position should be first determined in structure sheaf construction, is pressed
Every 30-the 40m of predetermined size is set together, often replaces contracting seam using small expansion joint (E.J.) in construction, and 5-10m of conventional length should set small together
Expansion joint (E.J.) marks, indwelling as requested, pine spread out and put on it is flat after tamped with low frequency plate compactor, it is high that compacting rear surface should meet design
Journey, to guarantee the construction thickness of surface layer, it is desirable that smooth, closely knit, the Oak Tree plastic material of the expansion joint (E.J.) insertion sizing of indwelling；
Surface construction must calculate pine and spread height, and rationally control height can make high with the pavement material or template on periphery after being compacted
Degree is consistent, meets the design altitude of road deck, pine spread out and put on it is flat after rolling carried out using low frequency hydraulic workstation roll, to guarantee
The density of pavement concrete, to guarantee the intensity of concrete；Rolling is polished with concrete polishing machinery in time after rolling, week
The place that side sanding machine can not be ground to manually smoothes out, it is desirable that surfacing, stone are evenly distributed, no missing stone phenomenon, prohibit
Only there is product slurry phenomenon, without hydraulic, the requirement pressure of workbench polishes whole, guarantees concrete strength；
2.7 maintenance
Pervious concrete maintenance work after molding is the important link of pervious concrete construction, due to adding in pervious concrete
Organic cementing material is added, the early strength of concrete increases comparatively fast, needs to conserve in time after the completion of surface layer, and the method taken is modeling
Expect film all standing protection, i.e. the plastic film on surface layer periphery is greater than surface layer 50cm or more, and the lap width of plastic film is full
Sufficient 20cm or more, and sprinkle water and moisten on the film covered, it is uniformly covered on film in surface layer, it is ensured that it is closed intact,
It leaves no gaps；
Film cannot have damage phenomenon, and local damage can directly result in maintenance burst, can generate sub- phenomenon, pervious concrete
Curing cycle is two weeks, and daily water seasoning must assure that more than twice, indispensable, and the optimum efficiency of maintenance is big in film
It is best for measuring dewdrop；Film covering curing must fasten, and prevent wind from film being caused to hike up, and must not have hollow phenomenon, make
It is damaged at local pervious concrete；
2.8 form removal
It, can be with form removal, in demolishing process after checking that the intensity of pervious concrete has reached 50%-70% after maintenance expires
In, side, the angle of concrete road surface must not be damaged, to keep pervious concrete block intact；
2.9 joint-cuttings, joint filling
When pervious concrete intensity reaches 50%-70% or so, mechanical joint-cutting can be carried out, the thickness of mechanical joint-cutting must expire
The perforation of sufficient surface thickness must rinse in time the mountain flour product slurry in seam after joint-cutting with water, guarantee completely without dust in seam, and will
The mud flush of concrete surface caused by when joint-cutting is clean, keeps next on structure sheaf and the sealing of surface layer when switching to expansion joint (E.J.)
Cause, must not the fissure of displacement, monolithic contracting seam area setting meet design requirement first, secondly must by standardize as defined in 25m2-30m2,
The flexible glue material filleting of sizing is taken to filling for expansion joint (E.J.), fills out the foams plastic material of sizing in contracting seam, seam table when joint filling
2-3mm height is reserved in face, is then injected into structure glue closing, embedding complete seam width is consistent, and surface is straight, and perception is good；
Paint cover on 2.10 road surfaces
Pavement overlay agent is painted using polyurethanes road surface, and spray coating mechanical is suitable for reply periphery when spray painting using airless sprayer
Preceding working procedure material is protected, and the quality of cover agent spraying must satisfy: it does not reveal the exact details, mechanically spraying smoothness, guarantee hiding rare,
Meet equalization request；For lap width when spraying in 5cm -8cm, running speed is uniform；
2.11 product protection
Pervious concrete pavement is in construction and maintenance processes, it is necessary to focus on finished product protection, road surface should strictly forbid trampling.
2. the construction method of water permeable concrete according to claim 1, it is characterised in that: under step (1) Job readiness can be divided into
Column process:
(1), construction site has reached " three supplies and one leveling ", i.e., road is logical, water is logical, electricity is logical, levelling of the land, and construction site meets stockpile
Condition is put, equipment installation has been completed, and a variety of construction machineries, which are marched into the arena, meets construction requirement；
(2), bottom, base layer construction have reached designed elevation, the pre-buried end of multinomial buried pipeline, and base has rolled knot
Beam, it is smooth；
(3), construction personnel's composition is marched into the arena, and meets the personnel demand of construction；
(4), materials arrival, it is qualified by examining, meet execution conditions.
3. the construction method of water permeable concrete according to claim 1, it is characterised in that: pervious concrete road pavement in step (2.6)
Surface construction paves, and there are two types of construction methods: the first is continuous construction, pours single volume in structure sheaf and meets contracting seam requirement
When, pave surface layer immediately, and this construction method makes structure sheaf and surface layer is firmly bonded and hollowing phenomenon is less likely to occur, but is easy pressure
Bad structure sheaf, it cannot be guaranteed that structure sheaf concrete strength, when construction, should not damage structure sheaf as far as possible；
Another method is compartment construction method, is exactly first whole laying structure layer, then integral construction surface layer, this method can protect
Structure sheaf concrete strength is demonstrate,proved, crossed construction influence is small, can also reduce Mixing Machine, mechanical investment and manually investment are reduced,
But adhesive layer must be done using plain-water slurry, prevented in surface construction in the case where structure layer surface sufficiently waters wet
Only hollowing phenomenon occurs.
4. the construction method of water permeable concrete according to claim 3, it is characterised in that: construct periphery in pervious concrete as paving
When filling band, the protection work to preceding working procedure product should be paid the utmost attention to, is protected using the method for plastic film bedding.
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| CN111996869A (en) * | 2020-07-21 | 2020-11-27 | 湖南砼艺市政工程建设有限公司 | Construction process of artificial grass court structure of ecological water-permeable concrete foundation structure |
| CN113603418A (en) * | 2021-08-09 | 2021-11-05 | 中国十七冶集团有限公司 | Polymerized concrete overlay and construction method thereof |
| CN114108561A (en) * | 2021-12-23 | 2022-03-01 | 河北雄安迅军建筑工程有限公司 | Plant-growing concrete slope protection and construction process thereof |
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| CN111041926A (en) * | 2019-11-21 | 2020-04-21 | 江苏永联精筑建设集团有限公司 | Construction method of drainage concrete pavement |
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| CN113603418A (en) * | 2021-08-09 | 2021-11-05 | 中国十七冶集团有限公司 | Polymerized concrete overlay and construction method thereof |
| CN114105675A (en) * | 2021-12-08 | 2022-03-01 | 苏州金螳螂建筑装饰股份有限公司 | Preparation method of foamed concrete and ground stone nondestructive paving design structure |
| CN114108561A (en) * | 2021-12-23 | 2022-03-01 | 河北雄安迅军建筑工程有限公司 | Plant-growing concrete slope protection and construction process thereof |
| CN115418906A (en) * | 2022-10-20 | 2022-12-02 | 湖南太合科创生态有限公司 | Polyurethane broken stone permeable pavement construction method |
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