CN1821491A - Wag-resisting concrete bridge surface paving method - Google Patents
Wag-resisting concrete bridge surface paving method Download PDFInfo
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- CN1821491A CN1821491A CNA2006100419487A CN200610041948A CN1821491A CN 1821491 A CN1821491 A CN 1821491A CN A2006100419487 A CNA2006100419487 A CN A2006100419487A CN 200610041948 A CN200610041948 A CN 200610041948A CN 1821491 A CN1821491 A CN 1821491A
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Abstract
The present invention is wag-resisting concrete bridge surface paving method. After completing spreading, vibrating and float coating of cement concrete, a granitic plaster layer is spread to delay the solidification of surface mortar without affecting the normal solidification of bulk concrete. After concrete curing and reaching certain strength of finally solidified concrete, the surface mortar is brush off so as to expose surface coarse aggregate. This interface treating method can increase the structure depth of the concrete bridge surface, increase the interlayer friction force between the concrete layer and mixed asphalt layer, raise the interlayer anti-shearing capacity and avoid spread layer wag and other faults, raise the use performance of the spread asphalt mixture material and increase the service life of bridge.
Description
Technical field
The invention belongs to the highway construction field, be specifically related to a kind of anti-passing cement concrete bridge floor paving method.
Technical background
In recent years, though the development of highway in China bridge construction rapidly, bridge construction is constantly brought forth new ideas, the long span bridge beam is very general, but, but showing slightly hysteresis as the relevant research of the deck paving aspect of bridge construction (especially cement concrete bridge construction) important component part, the design and construction of deck paving is still continued to use traditional usual practice, when carrying out the bridge construction design, bridge deck pavement is not generally made special design analysis.Along with the increase day by day of China's heavy vehicle, the appearance that bridge deck pavement is too early some diseases, and in these diseases especially with bituminous mixture on the concrete bridge deck mat formation the layer passing, gather around the bag disease the most serious.The generation that the bag disease was passed, gathered around to the layer of mating formation mainly is interface layer or the traditional treatment process of employing because asphalt pavement and bridge deck concrete are mated formation, the adhesion of interlayer is too small, make the layer bigger shear stress of inner generation under the effect of high temperature, vehicular load of mating formation, thereby cause the shear strain of uncertain destruction face, perhaps layer is poor with the bridge deck concrete interlayer bonding surface adhesion stress of mating formation because bituminous mixture is mated formation, anti-horizontal shear ability a little less than, produce relative displacement generation shear failure in the horizontal direction.Mat formation interlayer passing, gather around the bag disease and not only influenced the attractive in appearance of bridge floor, brought very big difficulty to maintenance work, hindered normal traffic simultaneously, easilier cause traffic accident.
According to research, the factor that influences the shearing strength at intersection ability mainly contains two aspects, the one, bridge deck concrete mat formation the surface degree of roughness (the surface texture degree of depth), the 2nd, the waterproof sticking layer oil between bridge deck concrete is mated formation and bituminous mixture is mated formation; The bridge deck concrete coarse surface texture of mating formation provides the interlayer frictional resistance, and the waterproof sticking layer oil provides asphalt mixture surfacing and the bridge deck concrete interlaminar bonding power between mating formation.Under the vehicular load effect, the frictional resistance of interlayer increases along with the increase of vehicle vertical load, and the adhesion stress of interlayer waterproofing course changes not quite, and the frictional resistance of interlayer is often accounting for leading role aspect the raising shearing strength at intersection ability.So can improve the interlayer frictional resistance by the way of bridge deck concrete making surface being carried out coarse processing (promptly increasing texture depth), to reach the purpose that improves the shearing strength at intersection ability.Make the bridge deck concrete layer of mating formation form to gather materials and expose, promptly the exposed concrete bridge deck pavement improves the most effective way of interlayer frictional resistance exactly.
Summary of the invention
The objective of the invention is to overcome above-mentioned conventional art deficiency, a kind of anti-passing cement concrete bridge deck paving method is provided, prevent that the bituminous mixture deck paving from producing passing, gathering around diseases such as bag under load action, improve the frictional resistance between bituminous mixture is mated formation and bridge deck concrete is mated formation, reduce the relative slippage of interlayer.
Technical scheme of the present invention is achieved in that at first, cement concrete bridge deck is mated formation through after paving, vibrate, wiping one's face, after treating that 5～30 minutes bridge deck surface moisture films disappear, and when surface temperature of concrete is 10～50 ℃, reveal the stone agent on its surface, carrying out health with the plastic covering film afterwards, is 20～40 ℃ in temperature, and conditioned time got final product in 7～15 hours; When temperature is 10～20 ℃, conditioned time 12～18 hours; When main body concrete after the health reaches certain intensity (more than 3～5MPa), open plastic foil again, brush the concrete surface mortar that do not condense, make concrete surface expose equally distributed, expose the coarse aggregate that the degree of depth is 3～4mm, promptly form and reveal the stone cement concrete bridge deck and mat formation;
At last, the dew stone cement concrete bridge deck that forms mated formation carry out conventional health, again by the portland cement concrete bridge floor bridge floor method making asphaltum concrete cover-layer of mating formation.
The consumption that reveals the stone agent is 250～300g/m
2
The described dew stone degree of depth is 3～4mm, and the construction depth that records with sand patch method corresponds to 2～3mm.
The dew stone agent of selecting for use is for liquid, and solid masses content is 10～20%, and fineness is less than 70um, and viscosity 35～45s, PH are 6～9.
Delay mat formation condensing of surperficial mortar but do not influence the concrete normal setting and harden of main body of bridge deck concrete by revealing the stone agent, after the main body hardening of concrete, remove the scalping mortar again, expose coarse aggregate.Exposed concrete is because of its coarse aggregate that exposes, has coarse macrostructure, to bridge deck concrete self intensity without any dysgenic situation under, improved the frictional resistance between the interface greatly, mat formation application life of layer thereby improved bituminous mixture on the concrete slab.The present invention can improve the shear resistance of interlayer, significantly improves the functional performance of flexible pavement and the application life of bridge.
The bridge deck concrete that adopts the inventive method to handle is mated formation and can significantly be improved the macrostructure of concrete bridge deck pavement, increase deck paving interface layer texture, therefore, will reach and prevent that effectively the bridge floor asphalt mixture surfacing from producing passing, gathering around the purpose of diseases such as bag under high temperature and load action, and finally improve the pavement performance of bridge floor asphalt pavement and prolong application life of bridge.The characteristics that the present invention constructs is simple and easy, workable, mechanization degree is high.
Concrete embodiment
The anti-bridge deck concrete construction technology of passing is most of identical with ordinary concrete, and the concrete construction technology of Wag-resisting concrete bridge surface is as follows:
1, concrete mix
Concrete mixing and stirring adopted after the central factory centralized preparation with vehicles drive to the place that paves.
2, concrete transportation
Identical with portland cement concrete;
3, concrete pave and vibrate
Identical with the construction technology of light water concrete bridge deck pavement;
4, concrete receipts water is wiped one's face
Receive water wipe one's face be water at concrete bridge deck pavement smash moulding, and through one process of surface treatment after the leveling, for anti-pass bridge deck concrete floating be for the mortar that makes the surface closely knit, smooth, but also in order to prevent that revealing the stone agent sprays inhomogeneous.
The sprinkling of 5, revealing the stone agent
After iron is smeared the receipts face, treated that bridge deck surfaces moisture film disappears, can spray and reveal the stone agent.
1). spray pattern
Adopt special-purpose dew stone agent sprinkling wagon or artificial the sprinkling; The liquid that sprays out will become the mist attitude, so that can not produce disturbance to the as placed concrete surface; Spray and want evenly.
2). spray dosage
Weather condition during according to the dew stone degree of depth that designs and construction is drafted sprinkling dosage, is generally 250～300g/m
2,, job site temperature height big, get high limit when wind speed is big, otherwise get lower bound when the dew stone degree of depth of design.
The sprinkling amount must strict control.Before each the sprinkling, strict weighing to reveal the weight of stone agent, and measure the good area that sprays.Avoid discharge rate too much or very few, the construction depth on road surface is too dark or too shallow when causing washing.
6, bridge deck concrete health for the first time
Sprayed the back about 10 minutes, covered with plastic film.Higher as temperature, can cover immediately.Plastic foil must be obturaged concrete surface, and edge weight compacting is to prevent to reveal stone agent evaporation loss under weather and heat of hydration effect.
7, scrub technology
Reach concrete suitable scrubbing the time, should throw off plastic sheeting, concrete surface is scrubbed, remove surperficial mortar and gather materials to expose.Scrub technology and both can adopt special-purpose exposed concrete scrubbing unit, also can adopt manually and scrub.Mechanization scrubs that speed is fast, the dew bag reason after scrubbing evenly; Manually scrub convenience, economy, but human factor may influence construction quality.
The suitable time of scrubbing can be determined by laboratory test and on-the-spot actual scrubbing.Scrubbing the time under the corresponding cement kind of laboratory test, the different health temperature, on-the-spot according to indoor result of the test, before and after the time of roughly estimating of scrubbing, carry out the examination of concrete surface small size and scrub, with suitable the scrubbing the time of determining that large tracts of land is scrubbed.
8, health (health for the second time)
After flushing finishes, for guaranteeing carrying out smoothly and avoiding water evaporates shrinkage crack to occur of cement hydration process, the reply cement concrete carries out the secondary health, this health for the second time is identical with the ordinary concrete health, purpose is the moisture content that guarantees to provide in the concrete strength propagation process sufficient amount, and health always reaches desired intensity to concrete.
9, the construction of waterproofing course and asphalt mixture surfacing
The mat formation construction technology of layer of the construction of waterproofing course and asphalt mixture surfacing and ordinary concrete bridge is identical.
Embodiment one:
At first, the cement concrete bridge deck plate is through after paving, vibrate, wiping one's face, when surface temperature of concrete is 10 ℃, treat that 30 minutes bridge deck surface moisture films disappear after, on its surface according to 250g/m
2Dosage sprays and reveals the stone agent, reveals the exposed concrete retarding agent that the stone agent selects for use Hai Wei company of Chang An University to produce---and HS-reveals the stone agent, and this dew stone agent is a kind of high-efficient retarder of liquid state, and solid masses content is 10%, and fineness is less than 70um, and viscosity 35s, PH are 6.Carrying out health with the plastic covering film afterwards, is 10 ℃ in environment temperature, and conditioned time got final product about 30 hours; The main body concrete reaches intensity 4MPa after health, opens plastic foil again, brushes the concrete surface mortar that do not condense, make concrete surface expose equally distributed, to reveal the stone degree of depth be the coarse aggregate of 3mm, promptly forms the exposed concrete deck paving;
At last, the dew stone cement concrete bridge deck plate that forms is carried out conventional health, by the ordinary concrete bridge floor bridge floor method making asphaltum concrete cover-layer of mating formation, promptly form the anti-cement concrete bridge floor of passing and mat formation again.
Embodiment two:
At first, the cement concrete bridge deck plate is through after paving, vibrate, wiping one's face, when surface temperature of concrete is 20 ℃, treat that 20 minutes bridge deck surface moisture films disappear after, on its surface according to 250g/m
2Dosage sprays and reveals the stone agent, reveals the exposed concrete retarding agent that the stone agent selects for use Hai Wei company of Chang An University to produce---and HS-reveals the stone agent, and this dew stone agent is a kind of high-efficient retarder of liquid state, and solid masses content is 15%, and fineness is less than 70um, and viscosity 40s, PH are 8.Carry out health with the plastic covering film afterwards.When environment temperature is 20 ℃, conditioned time 15 hours; The main body concrete reaches 3MPa intensity after health, opens plastic foil again, brushes the concrete surface mortar that do not condense, make concrete surface expose equally distributed, to reveal the stone degree of depth be the coarse aggregate of 3mm, promptly form to reveal the stone cement concrete bridge deck and mat formation;
At last, the dew stone cement concrete bridge deck plate that forms is carried out conventional health, by the portland cement concrete bridge floor bridge floor method making asphaltum concrete cover-layer of mating formation, promptly form the anti-cement concrete bridge floor of passing and mat formation again.
Embodiment three:
At first, the cement concrete bridge deck plate is through after paving, vibrate, wiping one's face, when surface temperature of concrete is 20 ℃, treat that 10 minutes bridge deck surface moisture films disappear after, on its surface according to 300g/m
2Dosage sprays and reveals the stone agent, reveals the exposed concrete retarding agent that the stone agent selects for use Hai Wei company of Chang An University to produce---and HS-reveals the stone agent, and this dew stone agent is a kind of high-efficient retarder of liquid state, and solid masses content is 20%, and fineness is less than 70um, and viscosity 45s, PH are 8.Carrying out health with the plastic covering film afterwards, is 20 ℃ in environment temperature, and conditioned time got final product in 15 hours; The main body concrete reaches 5MPa intensity after health, opens plastic foil again, brushes the concrete surface mortar that do not condense, make concrete surface expose equally distributed, to reveal the stone degree of depth be the coarse aggregate of 4mm, promptly form to reveal the stone cement concrete bridge deck and mat formation;
At last, the dew stone cement concrete bridge deck plate that forms is carried out conventional health, by the portland cement concrete bridge floor bridge floor method making asphaltum concrete cover-layer of mating formation, promptly form the anti-cement concrete bridge floor of passing and mat formation again.
Embodiment four:
At first, the cement concrete bridge deck plate is through after paving, vibrate, wiping one's face, when surface temperature of concrete is 30 ℃, treat that 10 minutes bridge deck surface moisture films disappear after, on its surface according to 270g/m
2Dosage sprays and reveals the stone agent, reveals the exposed concrete retarding agent that the stone agent selects for use Hai Wei company of Chang An University to produce---and HS-reveals the stone agent, and this dew stone agent is a kind of high-efficient retarder of liquid state, and solid masses content is 15%, and fineness is less than 70um, and viscosity 35s, PH are 9.Carrying out health with the plastic covering film afterwards, is 30 ℃ in environment temperature, and conditioned time got final product in 10 hours; The main body concrete reaches 3MPa intensity after health, opens plastic foil again, brushes the concrete surface mortar that do not condense, make concrete surface expose equally distributed, to reveal the stone degree of depth be the coarse aggregate of 3.5mm, promptly form to reveal the stone cement concrete bridge deck and mat formation;
At last, the dew stone cement concrete bridge deck plate that forms is carried out conventional health, by the portland cement concrete bridge floor bridge floor method making asphaltum concrete cover-layer of mating formation, promptly form the anti-cement concrete bridge floor of passing and mat formation again.
Embodiment five:
At first, the cement concrete bridge deck plate is through after paving, vibrate, wiping one's face, when surface temperature of concrete is 40 ℃, treat that 5 minutes bridge deck surface moisture films disappear after, on its surface according to 300g/m
2Dosage sprays and reveals the stone agent, reveals the exposed concrete retarding agent that the stone agent selects for use Hai Wei company of Chang An University to produce---and HS-reveals the stone agent, and this dew stone agent is a kind of high-efficient retarder of liquid state, and solid masses content is 10%, and fineness is less than 70um, and viscosity 40s, PH are 8.Carrying out health with the plastic covering film afterwards, is 40 ℃ in environment temperature, and conditioned time got final product in 7 hours; The main body concrete reaches 4MPa intensity after health, opens plastic foil again, brushes the concrete surface mortar that do not condense, make concrete surface expose equally distributed, to reveal the stone degree of depth be the coarse aggregate of 4mm, promptly form to reveal the stone cement concrete bridge deck and mat formation;
At last, the dew stone cement concrete bridge deck plate that forms is carried out conventional health, by the portland cement concrete bridge floor bridge floor method making asphaltum concrete cover-layer of mating formation, promptly form the anti-cement concrete bridge floor of passing and mat formation again.
According to the content of foregoing invention, we have carried out relevant experimental study in the laboratory.The cylindrical cement concrete test specimen of moulding 152mm * 80mm also adopts cutting, cutter hair, smooth and four kinds of processing modes of dew stone respectively from the teeth outwards, afterwards at its surface sprinkling SBS modification heated bitumen as water-proof tack coat, static pressure bituminous mixture on water-proof tack coat again adopts the concrete bridge deck pavement structure of different disposal mode with modeling interface.Above-mentioned four kinds of different test specimens are carried out interlayer staight scissors contrast test under 25 ℃, the condition of 5mm/min, 0.2MPa vertical force, its result of the test such as following table, result of the test from table as can be seen, when concrete pavement adopts dew stone interface, the shear stress of interlayer is significantly improved, therefore, adopt method of the present invention can obtain anti-concrete bridge deck pavement structure of passing.
Table 1 direct shear test is table as a result
| The different interface processing modes of concrete pavement | Reveal stone | Cutting | The cutter hair | Smooth |
| Value of shearing (MPa) | 0.61 | 0.41 | 0.55 | 0.13 |
Claims (4)
1, a kind of anti-passing cement concrete bridge deck paving method is characterized in that, carries out according to the following steps:
At first, the cement concrete bridge deck making is through after paving, vibrate, wiping one's face, after treating that 5～30 minutes concrete surface moisture films disappear, and when surface temperature of concrete is 10～50 ℃, reveal the stone agent in its surface sprinkling, carrying out health with the plastic covering film afterwards, is 20～40 ℃ in environment temperature, and conditioned time got final product in 7～15 hours; When temperature is 10～20 ℃ of environment, conditioned time 15～30 hours; The main body concrete reaches certain intensity after health, promptly more than 3～5MPa, open plastic foil again, brush the concrete surface mortar that do not condense, make concrete surface expose equally distributed, to reveal the stone degree of depth be the coarse aggregate of 3～4mm, promptly forms the exposed concrete deck paving;
At last, the exposed concrete deck paving that forms is carried out conventional secondary health, again by the portland cement concrete bridge floor bridge floor method making asphaltum concrete cover-layer of mating formation.
2, a kind of anti-passing cement concrete bridge deck paving method according to claim 1 is characterized in that, the consumption that reveals the stone agent is 250～300g/m
2
3, anti-passing cement concrete bridge deck plate paving method according to claim 1 is characterized in that the described dew stone degree of depth is 3～4mm, and the construction depth that records with sand patch method corresponds to 2～3mm.
4, anti-passing cement concrete bridge deck paving method according to claim 1 is characterized in that, the dew stone agent of selecting for use is for liquid, and solid masses content is 10～20%, and fineness is less than 70um, and viscosity 35-45s, PH are 6～9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100419487A CN1821491A (en) | 2006-03-20 | 2006-03-20 | Wag-resisting concrete bridge surface paving method |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2006100419487A CN1821491A (en) | 2006-03-20 | 2006-03-20 | Wag-resisting concrete bridge surface paving method |
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| CN1821491A true CN1821491A (en) | 2006-08-23 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009018530A1 (en) * | 2007-08-01 | 2009-02-05 | Connected Frames, Inc., A Colorado Corporation | Modular frame system |
| CN103204699A (en) * | 2013-01-29 | 2013-07-17 | 兰州交通大学 | Cement concrete pavement bare stone agent |
| CN103215873A (en) * | 2013-01-29 | 2013-07-24 | 兰州交通大学 | High-friction-resistance bridge deck concrete leveling layer paving construction method |
| US8604104B2 (en) | 2010-05-17 | 2013-12-10 | Dow Global Technologies Llc | Cellulose ether composition for dry mortar formulations |
| CN104894976A (en) * | 2015-05-14 | 2015-09-09 | 中国铁建大桥工程局集团有限公司 | Method for paving bridge surface through four-machine linkage |
| CN104911973A (en) * | 2015-05-18 | 2015-09-16 | 长安大学 | Treatment method between stone planting type layers and compound pavement paved through method |
| CN111691256A (en) * | 2020-06-18 | 2020-09-22 | 深圳市一楠景观设计有限公司 | Sand washing color concrete floor manufacturing process |
-
2006
- 2006-03-20 CN CNA2006100419487A patent/CN1821491A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009018530A1 (en) * | 2007-08-01 | 2009-02-05 | Connected Frames, Inc., A Colorado Corporation | Modular frame system |
| US8604104B2 (en) | 2010-05-17 | 2013-12-10 | Dow Global Technologies Llc | Cellulose ether composition for dry mortar formulations |
| CN103204699A (en) * | 2013-01-29 | 2013-07-17 | 兰州交通大学 | Cement concrete pavement bare stone agent |
| CN103215873A (en) * | 2013-01-29 | 2013-07-24 | 兰州交通大学 | High-friction-resistance bridge deck concrete leveling layer paving construction method |
| CN104894976A (en) * | 2015-05-14 | 2015-09-09 | 中国铁建大桥工程局集团有限公司 | Method for paving bridge surface through four-machine linkage |
| CN104911973A (en) * | 2015-05-18 | 2015-09-16 | 长安大学 | Treatment method between stone planting type layers and compound pavement paved through method |
| CN111691256A (en) * | 2020-06-18 | 2020-09-22 | 深圳市一楠景观设计有限公司 | Sand washing color concrete floor manufacturing process |
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