CN108383424A - A kind of PET based polyalcohols concrete and technique for anchorage bridge telescopic device - Google Patents
A kind of PET based polyalcohols concrete and technique for anchorage bridge telescopic device Download PDFInfo
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- CN108383424A CN108383424A CN201810259420.XA CN201810259420A CN108383424A CN 108383424 A CN108383424 A CN 108383424A CN 201810259420 A CN201810259420 A CN 201810259420A CN 108383424 A CN108383424 A CN 108383424A
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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
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/18—Polyesters; Polycarbonates
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/06—Arrangement, construction or bridging of expansion joints
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of PET based polyalcohols concrete and technique for anchorage bridge telescopic device, purpose is that research is a kind of to be anchored for bridge extension joint, with early strength height, the PET based polyalcohols concrete of the features such as impact strength and big flexural strength and the construction method and technique of the concrete.Used PET is used as cementitious material, river sand used and lime stone gathering materials as concrete, flyash to play the role of partial alternative PET as admixture and increase concrete workability in concrete.Pass through the grading for optimizing the dosage of PET and gathering materials, effectively raise the compression strength and flexural strength of PET based polyalcohol concrete, the growth of early strength is not influenced simultaneously, and this PET based polyalcohol concrete is applied to the anchoring of bridge extension joint, it is proposed that corresponding construction method and technique.
Description
Technical field
The invention belongs to bridge extension joint anchoring material field and PET based polyalcohols mix Design and now
Field construction field.
Background technology
Bridge can cause displacement in length and breadth due to being influenced by temperature, concrete shrinkage and creep；Tive load deflection and structure sediment
It will produce corner displacement.To adjust this deformation, setting on the corresponding position between bridge span or between bridge end and abutment is needed to stretch
Compression apparatus.This telescopic device should meet it is solid and reliable, make vehicle traveling smooth-going, without requirements such as kicks.
Concrete is anchored in bridge extension joint to refer to for finished product expansion joint to be anchored in reserved flexible slot, is wrapped up
Anchor bar, and the part concrete connected with runway smooth-going, are a faying faces of bridge structure, while being also one
Plane of weakness plays the role of fixed bridge extension joint, undertakes vehicular load impact.Wheel impacts can cause telescopic device component
Breakage falls off, loosens, and to accelerate the damage of telescopic device, influences its service life.Importantly, telescopic device both sides
The design of anchoring beams of concrete when general thickness is relatively thin, small volume, in addition the interference of built-in fitting, difficulty of construction is big, is easy to pour
Leakiness of vibrating is built, inside concrete is made to there is cavity, honeycomb, so that its is repaired difficult, when reparation need to suspend traffic, and increase and repair
The multiple period influences traffic operation huge.Therefore, it is necessary to a kind of rapid hardening is early strong, strong shock resistance is suitable for bridge extension joint
Anchor the concrete of concrete work feature.But meet the steel fiber reinforced concrete of condition, the discrete difficulty of fiber in current engineering；It is poly-
The cost for closing object concrete is excessively high, both there is certain limitation.
Invention content
The purpose of this patent is that research is a kind of to be anchored for bridge extension joint, impact strength high with early strength
And flexural strength it is big the features such as PET based polyalcohols concrete and the concrete construction method and technique, particularly with
PET plastic, lime stone, river sand and flyash are primary raw material, prepare and are used for anchorage bridge telescopic device, have early strength
High, the features such as impact strength and flexural strength are good PET based polyalcohols concrete and the concrete are flexible in anchorage bridge
Construction technology when device.
The technical solution adopted by the present invention is as follows：
For the PET based polyalcohol concrete of anchorage bridge telescopic device, the cementitious material using PET as concrete,
Fine aggregate and coarse aggregate using river sand and lime stone as concrete, using flyash as admixture.
Specifically, further, PET used is waste PET plastic bottle or PET plastic particle；If using plastic bottle, Ying Jiang
PET plastic bottle is cut into PET fragments, and cleans up and used after drying.
Further, the grading limit gathered materials is designed according to fowler grading.
Further, the maximum particle diameter of lime stone used is 9.5mm, and lime stone is washed and used after drying；River sand used
Maximum particle diameter 4.75mm in sand.
Further, admixture used is 2# flyash.
Further, the mass ratio of the flyash and PET：Flyash=1/0.5 PET/ or 1/1.
Further, PET is with mixture of fly ash total amount and the mass ratio of coarse aggregate and the total dosage of fine aggregate：(PET+
Flyash)/(coarse aggregate and fine aggregate)=1/3.
Further, in gathering materials per 100g, the quality used of gathering materials of each grain size is shown in Table 2.
Each grain size gathers materials quality used when 2 maximum particle diameter 9.5mm of table
In the present invention PET in concrete be used as cementitious material, river sand used and lime stone gathering materials as concrete,
Flyash plays the role of partial alternative PET as admixture and increases concrete workability.By optimize PET dosage and
The grading gathered materials, effectively raises the compression strength and flexural strength of PET based polyalcohol concrete, while not influencing early stage
The growth of intensity, and the anchoring by this PET based polyalcohol concrete applied to bridge extension joint, it is proposed that corresponding construction
Method and technique.
The invention also provides a kind of construction technologies constructed using foregoing PET based polyalcohols concrete：
Step 1 is according to welded reinforcement size in bridge expanssion joint preformed groove, the comparable baffle of processing dimension, by what is processed
Baffle is inserted longitudinally into preformed groove, to the PET concrete of longitudinal barrier block placement；
Pressing plate used in step 2 processing compacting PET concrete；
Step 3 prepares PET based polyalcohol concrete, while smearing adhesive in cement concrete surface in preformed groove；
Step 4 in the PET based polyalcohol concretings to preformed groove prepared, will pour while the PET to being perfused
Based polyalcohol concrete is plugged and pounded；It waits pouring and finish, the pressing plate processed in covering step 2 above PET based polyalcohols concrete,
It is compacted using the band silk reinforcing bar welded in advance and nut cooperation；It polishes to flatten and cover to concrete surface after compacting and block
Object carries out heat preservation health for a period of time；It can be open to traffic after health for a period of time.
Further, the shutter configuration size should be corresponding with rebar sizes in preformed groove, makes it in insertion groove, and prop up
For gear in expansion joint on anchor bar, the barrier width should be equal with reserved well width, the height of baffle plate and reserved groove depth
Spend equal, Weir Plate Thickness is at least 2cm, uses to ensure safety.
Further, the pressing plate uses steel plate, pressing plate to be used cooperatively with anchor bar；Concrete operations are, reserved
Ready band silk reinforcing bar is vertically welded in slot on anchor bar, is reserved and this hole with silk reinforcing bar same diameter size on pressing plate
Hole, attaching nut use, to reinforce compacting PET based polyalcohol concrete；After having poured PET base concretes when construction, it will press
Plate passes through band silk reinforcing bar to cover on PET base concretes, after nut is screwed on band silk reinforcing bar, force withstands pressing plate, and compacting is completed
After unclamp nut, remove pressing plate, will be cut away higher than PET concrete surfaces part with silk reinforcing bar, make surfacing.
Further, the platen width should reserve that well width is equal, and pressing plate length should be slightly bigger than preformed groove with expansion joint
The interior longitudinal pitch with ground welding reinforcing bar, thickness of compressive plate should be at least 1cm and use to ensure safety.
After the present invention waits for bridge extension joint and pontic reinforcement welding, pontic combination surface concrete is carried out at plucking
Reason improves the binding ability of PET based polyalcohols concrete and cement concrete；Faying face is cleared up using air blower, clearly
Manage rubbish and sundries therein.
Beneficial effects of the present invention are as follows：
1. proposing a kind of new method using waste PET, it can effectively reduce waste PET and ecological environment is broken
It is bad.
2.PET based polyalcohol concrete raw materials easily obtain and price is low, and manufacturing process is simple.
3. by the PET based polyalcohol concrete mixs of design, because it can reach intensity, Ke Yiyou at 1 hour or so
The anchoring with bridge extension joint of effect greatly shortens the time for influencing traffic.
4.PET based polyalcohol concrete has preferable fracture resistance, can improve the strong of bridge extension joint anchored end
Degree ensures the smooth-going of driving, reduces maintenance cost.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not constitute the improper restriction to the application for explaining the application.
Fig. 1 is the baffle front view；1 recess to match with longitudinal reinforcement in flexible slot constructs in figure.
Fig. 2 is the pressing plate vertical view；2 be reserving hole in figure.
Specific implementation mode
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof；
Concrete is anchored as background technology is introduced, in existing highway bridge telescopic device to refer to for by finished product expansion joint anchor
Gu in reserved flexible slot, anchor bar, and the part concrete connected with runway smooth-going are wrapped up, is bridge structure
A faying face, while be also a plane of weakness, play the role of fixed bridge extension joint, undertake vehicular load impact.
Wheel impacts can cause the breakage of telescopic device component, fall off, loosen, and to accelerate the damage of telescopic device, influence it and use the longevity
Life.Importantly, when the anchoring beams of concrete design of telescopic device both sides, general thickness is relatively thin, small volume, in addition pre-buried
The interference of part, difficulty of construction is big, is easy to pour leakiness of vibrating, and inside concrete is made to there is cavity, honeycomb, so that it is repaired tired
Difficulty, when reparation, need to suspend traffic, and increase repairing efficiency, be influenced on traffic operation huge.Therefore, it is necessary to a kind of rapid hardening is early strong,
Strong shock resistance is suitable for the concrete of bridge extension joint anchoring concrete work feature.But meet condition in current engineering
Steel fiber reinforced concrete, the discrete difficulty of fiber；The cost of polymer concrete is excessively high, both there is certain limitation, in order to
Technical problem as above is solved, the present invention is using waste PET plastics as cementitious material, and lime stone is used as with sand to gather materials, fine coal
Ash prepares PET based polyalcohol concrete as admixture, is used for the anchoring of bridge extension joint, while proposing the side of site operation
Method and technique.
In a kind of typical embodiment of the application, used PET is used as cementitious material in concrete, used
River sand and lime stone gathering materials as concrete, flyash as admixture play partial alternative PET and increase concrete and easily
The effect of property.By the grading for optimizing the dosage of PET and gathering materials, the resistance to compression of PET based polyalcohol concrete is effectively raised
Intensity and flexural strength, while the growth of early strength is not influenced, and this PET based polyalcohol concrete is stretched applied to bridge
The anchoring of compression apparatus, it is proposed that corresponding construction method and technique.
1. raw materials and dosage
PET used is waste PET plastic bottle or PET plastic particle.If using plastic bottle, PET plastic bottle should be cut into
Small PET fragments are cleaned up using clear water and are used after drying.
Coarse aggregate used is the lime stone that maximum particle diameter is 9.5mm, and rubble is washed and used after drying.
Fine aggregate used is common river sand, the middle sand of maximum particle diameter 4.75mm.
Admixture used is 2# flyash.
The grading limit used gathered materials is designed according to fowler grading, according to maximum particle diameter 9.5mm gradation designs, is referred to
Shown in table 1.
The grading limit requirement of 1 maximum particle diameter 9.5mm of table
In gathering materials per 100g, the quality used of gathering materials of each grain size is shown in Table 2.
Each grain size gathers materials quality used when 2 maximum particle diameter 9.5mm of table
On the basis of PET, the dosage of 2# flyash is：Flyash=1/0.5 PET/ or 1/1 (mass ratio)
On the basis of PET and 2# mixture of fly ash, the dosage gathered materials is：(PET+ flyash) /=1/3 (quality of gathering materials
Than)
2. Preparation equipment
Temperature control heats mix instrument, and volume 100L heats 500 DEG C of maximum temperature, and temperature-controllable is adjustable, and mixing speed is per minute
40 turns, heating source is bottled gas.
3. preparation method
It should determine that the dosage of PET base concretes, specific method are first：The rulers such as the length according to required anchorage zone
It is very little, it can be calculated and anchor volume needed for concrete, its quality can be sought by multiplying density by volume.The density is its bulk density,
It is shown in Table 3, table 4.To ensure its dosage, it is 2200kg/m to take its bulk density3.
PET based polyalcohols concrete 1, preparation process are made using the lime stone of PET and coarse aggregate maximum particle diameter 9.5mm
For：The usage percentage to gather materials by each grain size of 2 defined of table is weighed, the dosage of PET be determined as PET/ flyash=
1/0.5, (PET+ flyash)/gather materials=1/3.About 2min is mixed in flyash and PET, be then added gather materials 270~
290 DEG C of heating stirring about 30min make mixture become half sticky flow regime and can be used.
PET based polyalcohols concrete 2, preparation process are made using the limestone of PET and coarse aggregate maximum particle diameter 9.5mm
For：The usage percentage to gather materials by each grain size of 2 defined of table is weighed, the dosage of PET be determined as PET/ flyash=
1/1, (PET+ flyash)/gather materials=1/3.About 2min is mixed in flyash and PET, is then added and gathers materials 270~290
DEG C heating stirring about 30min makes mixture become half sticky flow regime i.e. usable.
Heating mix instrument limited volume used, and in order to ensure the quality of heating mix, each mix amount should not be excessive,
/ 5th i.e. 20L that volume should be no more than are advisable.Meanwhile institute's mix pet polymer amount of concrete it is more when, required heating is stirred
Mixing the time also accordingly extends, and should mix standard until mixture becomes half sticky flow regime.In general, needed for bridge expanssion joint
Casting concrete volume is larger, therefore need to use the construction technology of block placement.
4. application structure
PET based polyalcohols concrete 1 and 2, is used to bridge extension joint anchor structure, and concrete application position is stretched for bridge
Compression apparatus is connect with pontic at reinforcing bar, is used for the fixation and protection of pontic reinforcing bar and telescopic device.
5. construction technology
After waiting for bridge extension joint and pontic reinforcement welding, wharf's pavement quality is carried out to pontic combination surface concrete, is carried
The binding ability of high PET based polyalcohols concrete and cement concrete；Faying face is cleared up using air blower, cleaning is wherein
Rubbish and sundries.
It first, should be according to welded reinforcement size in bridge expanssion joint preformed groove, the comparable baffle of processing dimension, the knot of baffle
Structure constructs 1 as shown in Figure 1, being equipped with the recess to match with longitudinal reinforcement in flexible slot on baffle, can be inserted into longitudinal in slot
Reinforcing bar；
For baffle to the PET concrete of longitudinal barrier block placement, shutter configuration size should be with rebar sizes in preformed groove
It is corresponding, make it in insertion groove, and supporting and retaining system, in expansion joint on anchor bar, barrier width should be equal with reserved well width, gear
Plate height and preformed groove deep equality, Weir Plate Thickness are at least 2cm and use to ensure safety.
Secondly, processing compacting pressing plate used, the structure of pressing plate is as shown in Fig. 2, steel plate, pressing plate and anchoring steel can be used in pressing plate
Muscle is used cooperatively, and concrete operations are vertically to weld ready band silk reinforcing bar on anchor bar in preformed groove, is reserved on pressing plate
With this hole 2 with silk reinforcing bar same diameter size, hole 2 is consistent with welded bands silk bar diameter, to be inserted into reinforcing bar, utilizes
Nut force compacting.After having poured PET base concretes when construction, band silk reinforcing bar is passed through to cover on PET base concretes pressing plate, after
Nut is screwed on band silk reinforcing bar, force withstands pressing plate, unclamps nut after the completion of compacting, removes pressing plate, will be higher than with silk reinforcing bar
PET concrete surfaces part is cut away, and makes surfacing.It is equal that platen width should reserve well width with expansion joint, pressing plate length
Should be slightly bigger than the longitudinal pitch with ground welding reinforcing bar, thickness of compressive plate in preformed groove should be at least 1cm and use to ensure safety.
Again, PET based polyalcohol concrete, while the cement concrete in preformed groove is prepared in situ using heating mix instrument
Adhesive is smeared on face, adhesive can be epoxy resin should note to bond PET based polyalcohols concrete and cement concrete
Such epoxyn of anticipating answers resistance to 300 DEG C or so of high temperature；It prepares and completes after-pouring, pour use simultaneously and in advance heat
The cusp-shaped tool such as pick rod manually plugs and pounds the PET based polyalcohols concrete being perfused, and the frequency manually plugged and pounded is about 70
Secondary/min should be pierced into inside concrete when vibrating；Pouring should complete in 10min, and wherein vibrating time is about 1min；It waits pouring
It finishes, steel plate is covered above PET based polyalcohols concrete, be compacted using the band silk reinforcing bar welded in advance and nut cooperation
1min；It polishes concrete surface after compacting and flattens and cover canvas heat preservation health 1h；It can be open to traffic after health 1h.
Specific embodiment：
According to different PET/ flyash ratios, the PET based polyalcohol concrete of 2 kinds of match ratios has been made.PET based polyalcohols
Concrete setting simultaneously reaches the final strength time for 1h, has very strong early epistasis.
The lime stone of the use coarse aggregate maximum particle diameter of PET based polyalcohols concrete 1 9.5mm, flyash=1/0.5 PET/,
The fundamental property of (PET+ flyash) /=1/3, the PET based polyalcohols concrete 1 that gathers materials is shown in Table 3
The fundamental property of 3 PET based polyalcohols concrete 1 of table
| Property | Unit | Numerical value |
| Bulk density | kg/m3 | 2100 |
| Water absorption rate | % | <1% |
| Compression strength | MPa | 27.80 |
| Flexural strength | MPa | 9.56 |
| Impact property | J | 201.54 |
From table 3 it is observed that the compression strength of PET based polyalcohols concrete 1 meets road surface requirement, while flexural strength
Meet 1.59 times that superfine road surface requires, compared with the concrete of ad eundem, impact property improves 80%.
PET concrete 2 is using the limestone of coarse aggregate maximum particle diameter 9.5mm, flyash=1/1 PET/, (PET+ fine coal
Ash) fundamental property of /=1/3, the PET based polyalcohols concrete 2 that gathers materials is shown in Table 4
The fundamental property of 4 PET based polyalcohols concrete 2 of table
| Property | Unit | Numerical value |
| Bulk density | kg/m3 | 2150 |
| Water absorption rate | % | <1% |
| Compression strength | MPa | 36.00 |
| Flexural strength | MPa | 9.09 |
| Impact property | J | 161.23 |
As can be seen from Table 4, the compression strength of PET based polyalcohols concrete 2 meets road surface requirement, and is 2 kinds of cooperations
The highest than in, while flexural strength meets 1.5 times that superfine road surface requires, compared with the concrete of ad eundem, impact property carries
It is high by 75%.
From the point of view of the PET based polyalcohol concrete performances in 3 table 4 of table, compression strength can ensure in 25MPa~36MPa,
Flexural strength is 9MPa~12MPa or so simultaneously, has preferable resistance to compression and flexural strength, can be adapted for bridge extension joint
Anchoring.
The foregoing is merely the preferred embodiments of the application, are not intended to limit this application, for the skill of this field
For art personnel, the application can have various modifications and variations.Within the spirit and principles of this application, any made by repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. the PET based polyalcohol concrete for anchorage bridge telescopic device, which is characterized in that using PET as concrete
Cementitious material, fine aggregate and coarse aggregate using river sand and lime stone as concrete, using flyash as admixture.
2. being used for the PET based polyalcohol concrete of anchorage bridge telescopic device as described in claim 1, which is characterized in that institute
It is waste PET plastic bottle or PET plastic particle with PET.
3. being used for the PET based polyalcohol concrete of anchorage bridge telescopic device as described in claim 1, which is characterized in that institute
The grading limit for stating coarse aggregate and fine aggregate is designed according to fowler grading.
4. being used for the PET based polyalcohol concrete of anchorage bridge telescopic device as described in claim 1, which is characterized in that institute
It is 9.5mm with the maximum particle diameter of lime stone；The maximum particle diameter of river sand used is the middle sand of 4.75mm.
5. being used for the PET based polyalcohol concrete of anchorage bridge telescopic device as described in claim 1, which is characterized in that institute
State flyash and the mass ratio of PET：Flyash=1/0.5 PET/ or 1/1.
6. being used for the PET based polyalcohol concrete of anchorage bridge telescopic device as described in claim 1, which is characterized in that PET
It is with mixture of fly ash total amount and the mass ratio of coarse aggregate and the total dosage of fine aggregate：(PET+ flyash)/(coarse aggregate and thin collection
Material)=1/3.
7. being used for the PET based polyalcohol concrete of anchorage bridge telescopic device as described in claim 1, which is characterized in that thick
Gathering materials, it is as follows to be required with the grading of fine aggregate：
8. a kind of construction technology constructed using any PET based polyalcohol concrete of claim 1-7, feature
It is：
Step 1 is according to welded reinforcement size in bridge expanssion joint preformed groove, the comparable baffle of processing dimension, the baffle that will be processed
It is inserted longitudinally into preformed groove, to the PET concrete of longitudinal barrier block placement；
Pressing plate used in step 2 processing compacting PET concrete；
Step 3 prepares PET based polyalcohol concrete, while smearing adhesive in cement concrete surface in preformed groove；
Step 4 in the PET based polyalcohol concretings to preformed groove prepared, will pour while the PET bases to being perfused are poly-
Object concrete is closed to be plugged and pounded；It waits pouring and finish, the pressing plate processed in covering step 2 above PET based polyalcohols concrete uses
The band silk reinforcing bar welded in advance is compacted with nut cooperation；After compacting to concrete surface polish flatten and cover shelter into
Row heat preservation health is for a period of time；It can be open to traffic after health for a period of time.
9. construction technology as claimed in claim 7, it is characterised in that：The shutter configuration size should be with reinforcing bar ruler in preformed groove
Very little correspondence, makes it in insertion groove, and supporting and retaining system is in expansion joint on anchor bar, the barrier width and reserved well width phase
Deng, the height of baffle plate and preformed groove deep equality, Weir Plate Thickness is at least 2cm.
10. construction technology as claimed in claim 7, it is characterised in that：The pressing plate uses steel plate, pressing plate and anchor bar
It is used cooperatively, concrete operations are：Vertically weld ready band silk reinforcing bar on anchor bar in preformed groove, reserved on pressing plate with
This hole with silk reinforcing bar same diameter size, attaching nut use, to reinforce compacting PET based polyalcohol concrete；Construction
When poured PET base concretes after, by pressing plate pass through band silk reinforcing bar cover on PET base concretes, after by nut be screwed in band silk steel
On muscle, force withstands pressing plate, unclamps nut after the completion of compacting, removes pressing plate, will be higher than PET concrete surfaces part with silk reinforcing bar
It cuts away, makes surfacing；
It is equal that the platen width should reserve well width with expansion joint, pressing plate length slightly larger than in preformed groove with ground welding reinforcing bar
Longitudinal pitch, thickness of compressive plate should be at least 1cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810259420.XA CN108383424B (en) | 2018-03-27 | 2018-03-27 | Construction process for constructing PET (polyethylene terephthalate) -based polymer concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810259420.XA CN108383424B (en) | 2018-03-27 | 2018-03-27 | Construction process for constructing PET (polyethylene terephthalate) -based polymer concrete |
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| Publication Number | Publication Date |
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| CN108383424A true CN108383424A (en) | 2018-08-10 |
| CN108383424B CN108383424B (en) | 2021-02-02 |
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| CN201810259420.XA Active CN108383424B (en) | 2018-03-27 | 2018-03-27 | Construction process for constructing PET (polyethylene terephthalate) -based polymer concrete |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454190A (en) * | 1981-09-29 | 1984-06-12 | Isolite Babcock Refractories Co., Ltd. | Expandable ceramic fiber felt with graphite flakes |
| CN102966037A (en) * | 2012-12-14 | 2013-03-13 | 黑龙江省交通科学研究所 | Installation and construction process of bridge expansion joints |
| CN102976663A (en) * | 2012-11-29 | 2013-03-20 | 山东大学 | Polymer modified polyethylene terephthalate (PET) concrete and preparation method thereof |
-
2018
- 2018-03-27 CN CN201810259420.XA patent/CN108383424B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4454190A (en) * | 1981-09-29 | 1984-06-12 | Isolite Babcock Refractories Co., Ltd. | Expandable ceramic fiber felt with graphite flakes |
| CN102976663A (en) * | 2012-11-29 | 2013-03-20 | 山东大学 | Polymer modified polyethylene terephthalate (PET) concrete and preparation method thereof |
| CN102966037A (en) * | 2012-12-14 | 2013-03-13 | 黑龙江省交通科学研究所 | Installation and construction process of bridge expansion joints |
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| CN108383424B (en) | 2021-02-02 |
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