CN102746822B - Polymer asphalt based waterproof adhesive material and preparation process and construction process thereof - Google Patents
Polymer asphalt based waterproof adhesive material and preparation process and construction process thereof Download PDFInfo
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Abstract
The invention discloses a polymer asphalt based waterproof adhesive material which comprises the following raw material components in part by weight: 100 parts of modified emulsified asphalt, 5-8 parts of water, 4-9 parts of waterborne epoxy resin, 6-12 parts of waterborne epoxy hardener and 6-8 parts of PA (Polyamide) hot melt adhesive. A preparation process of the material comprises the following steps of: (a) weighing modified emulsified asphalt, water and waterborne epoxy hardener according to the raw material formula, and mixing and agitating the three raw materials to be uniform; and (b) adding formula amount of waterborne epoxy resin and PA hot melt adhesive into the mixture in the step (a), and mechanically agitating the raw materials for 50 s to be uniform. A construction process of the material comprises the following steps of: (1) pavement treatment; (2) site test: determining the distribution amount; (3) distributing the agitated polymer asphalt based waterproof adhesive material within 30 min; and (4) curing for 24 h. The polymer asphalt based waterproof adhesive material provided by the invention has the advantages of strong bonding force, good permeability, simple construction process, good high-temperature stability and low construction cost.
Description
Technical field
The present invention relates to a kind of water-proof material, preparation technology and construction technology thereof, belong to high polymer waterproof material field.
Background technology
Along with surging of the volume of traffic, carload lot is increasing, the excess load operation of road structure causes a lot of cement pavement asphalts to overlay section, after putting into effect, there is soon crack, gathered around bag, rut, embrittlement, the phenomenon such as come off, the too early destruction of paving layer becomes a problem demanding prompt solution.According to investigation, show, bag disease (particularly mountainous area highway) of common occurrence is passed, gathered around to the layer of mating formation causing owing to coming off between asphalt pavement and old cement concrete pavement in these diseases.The generation that bag disease was passed, come off, gathers around to the layer of mating formation is mainly because paving is in complicated stress and strain state, simultaneously, vehicle travels and under the Fraquent start of vehicle, horizontal force action that braking causes on the road surface of large longitudinal gradient, between the Ceng Yu Cement Concrete of mating formation basic unit, produced larger shearing stress, when asphalt pavement and Cement Concrete base interface layer adhesive power too small, when shearing stress surpasses the ultimate shearing stress of interlaminar bonding layer, will produce in the horizontal direction relative displacement and the shear fracture of occurred level direction.
In addition, along with the increase of the increase of freeway network density, expropriation of land removal difficulty, the shared proportion of bridge will be increasing, and the shared proportion of some highway projects Bridges is up to 85%.But before not reaching design service life, just having there is the phenomenons such as steel bar corrosion, cement plate are loose, bridge structure strength degradation in a lot of bridges, makes stability, comfortableness and the security of bridge all be subject to impact.Trace it to its cause, the design of deck paving and construction are usually ignored by engineers, it is of common occurrence that bridge deck pavement destroys situation too early, for example: Guangdong Province's Buddhist is opened motorway, open less than 2 years, 17 bridges have 14 rebuildings that are forced to do over again unexpectedly completely, expend more than 3,700 ten thousand yuan, and this just makes the operation benefits of bridge decline to some extent.Occurring under a large amount of damaged conditions of deck paving, no doubt there are the aspect factors such as asphalt concrete pavement layer construction quality, but analyze discovery by the-spot investigation, major cause is that extraneous moisture infiltrates generation steel bar corrosion in cement concrete bridge deck, occurs loose, disease peeling after decking expand.In addition, under the impact of hot weather, interlayer temperature between asphalt pavement and bridge floor is higher, yet the material that existing water-proof tack coat adopts mostly is pitch class material, such material possesses certain water shutoff ability, but be generally no more than 0.3MPa with the cohesive strength of cement concrete slab at normal temperatures, and with the cohesive strength of bituminous concrete in 0.2 MPa left and right, easily cause large longitudinal gradient bridge deck pavement to occur passing and delamination.
Solve deck paving and damage too early, top priority is that block water is divided into into girder inside concrete, and this just need to arrange good water-proof tack coat between cement decking and asphalt mixture surfacing.The angle forming from deck installation structure, not only requires waterproof layer must have good adhesive property on the one hand, makes whole floor system under the effect of traffic load, keep good globality; Also require on the other hand waterproof layer to possess good performance of watertightness, to guarantee that extraneous moisture cannot leak in bridge deck concrete in the time limit of service of bridge, this just requires waterproof layer not only will keep good integrity, but also should have the extraneous damaged ability of certain opposing.
Conventional tack coat is heat modification asphalt macadam tack coat.If yet the oil mass of tack coat is on the low side, bond effect is poor, if oil mass is on the high side, only have one deck bituminous concrete, may bellding; Do not spread rubble and will glue wheel, spread rubble, the artificial weak floor that increases in thin layer overlays, it is exactly this reason that many deck pavings and cement pavement overlay construction quality bad.
And in construction process, traditional water-proof tack coat need be after coating spreading rubble, to provide the working face of surface layer asphalt concrete construction for construction machinery.Because being loose shape, rubble is distributed on water-proof tack coat, between water-proof tack coat and bituminous pavement, form a physical barrier, cause that asphalt is difficult to Effective Compaction at this place's near zone, porosity is large, thereby greatly weakened viscosifying power and dense water between water-proof bond material and asphalt.
Summary of the invention
The technical problem to be solved in the present invention is to overcome in prior art road surface water-proof tack coat cohesive force to cause not mating formation and between Ceng Yu Cement Concrete basic unit, produced the defect of larger shearing stress, provide that a kind of cohesive force is strong, good penetrability, without the polymer asphaltic base water-proof bond material of metalling, high-temperature stable;
Another object of the present invention is to provide a kind of preparation technology of polymer asphalt waterproofing matrix material;
Another object of the present invention is to provide a kind of construction technology of polymer asphalt waterproofing matrix material.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
An asphaltic base water-proof bond material, its feed composition comprises: by weight, 100 parts of modified emulsifying asphalts, water 5-8 part, aqueous epoxy resins 4-9 part, aqueous epoxy curing agent 6-12 part, PA hot melt adhesive 6-8 part.
Wherein, modified emulsifying asphalt is selected the product of stipulating about BCR type emulsified bitumen in commercially available meeting " micro-table place and Slurry Seal Technology guide ".Modified emulsifying asphalt mainly plays waterproof; Aqueous epoxy resins and aqueous epoxy curing agent (market is all on sale) can be realized the bonding with cement panel preferably; , there is after polymerization chemical reaction in high temperature when PA hot melt adhesive material (market is on sale) utilizes bituminous mixture laying, thereby has greatly improved the adhesive property of water-proof tack coat and asphaltic road-mix surface course.
Further, the feed composition of described polymer asphaltic base water-proof bond material comprises: by weight, and 100 parts of modified emulsifying asphalts, water 5-6 part, aqueous epoxy resins 5-8 part, aqueous epoxy curing agent 7.5-12 part, PA hot melt adhesive 7-8 part.
Further, the feed composition of described polymer asphaltic base water-proof bond material comprises: by weight, and 100 parts of modified emulsifying asphalts, 6 parts, water, 6 parts of aqueous epoxy resins, 9 parts of aqueous epoxy curing agents, 7 parts of PA hot melt adhesives.
A preparation technology for polymer asphaltic base water-proof bond material, comprises the steps,
A. by composition of raw materials, claim modified emulsifying asphalt, water, aqueous epoxy curing agent, mixing and stirring;
B. to the compound in step a, add aqueous epoxy resins, the PA hot melt adhesive of formula ratio, adopt mechanical stirring even, churning time is 60 seconds.
A construction technology for polymer asphaltic base water-proof bond material, comprises the steps,
A. remove graticule, transverse vibration deceleration strip, road button;
, until there is new concrete surface 60% in b. road surface plucking dedusting;
C. road pavement is carried out clean-out operation;
D. blow off road dust;
Step 2, spread quantity test: according to work on the spot area and sprinkling work efficiency, determine the amount of agitation of polymer asphaltic base water-proof bond material, spread quantity is controlled at 1-1.7kg/m
2;
Step 3, the polymer asphaltic base water-proof bond material spread in 30 minutes being stirred is completed;
Step 4, health 24 hours.
Further, in described step 2, spread quantity is 1.5kg/ m
2.
Execute that man-hour requirement constructs at twice, new construction part partly overlaps width more than 20cm with constructing.
According to specific experiment, polymer asphaltic base water-proof bond material (following called after: beneficial effect PCMA-1) provided by the present invention is described below.
One, PCMA-1 universal performance evaluation experimental
A. high-temperature behavior test
1. test method
(1) prefabricated cement concrete test specimen, maintenance 28d under standard conditions, laitance is removed on surface, core boring sampling;
(2) by different matrix materials, consumption brushing is surperficial at cement concrete test specimen in accordance with regulations;
(3) test specimen 45° angle is positioned in the baking oven of 165 ℃ of specified temperature, observes after 20min test specimen surface and have or not the phenomenons such as bubble, sagging or trickling.
2. test-results and analysis
As can be seen from Table 1: because PCMA-1 has heat cured feature after completing reaction, it has better high-temperature stability than rubber modified asphalt and SBS modifying asphalt." standard specification for construction and acceptance of highway asphalt pavement " (JTG F40-2004) regulation, temperature during plain asphalt mixture laying is the highest is about 150 ℃～170 ℃, and modified asphalt mixture construction temperature can exceed 10 ℃～20 ℃ conventionally.As can be seen here, guarantee water-proof tack coat in deck paving, bring into play its effect, higher resistance to elevated temperatures is most important to water-proof bond material.
table 1: the high temperature test result of different matrix materials
B. performance of watertightness test
One of interlaminar bonding material major function is water-repellancy, so matrix material must possess performance of watertightness under virgin state, below several tack coat starting material performance of watertightness is tested.
1. test method
(1) kraft paper that preparation has been sheared, at the different matrix materials of the even brushing required thickness of its one side, at room temperature maintenance is to doing solid work;
(2) test specimen of doing solid work is positioned on formation plate face, under use pavement seepage instrument detection 600ml water column, after 30min, whether the another side of kraft paper is moist, notices whether water column changes simultaneously.
2. test-results and analysis
Test-results shows, the water column of different matrix materials is all unchanged, and the another side of kraft paper does not all have the occurrence of wetness, illustrates that PCMA-1 is waterproof.
Erichsen test
Test, with reference to GB/T528 " mensuration of thermoplastic elastomer tensile stress-strain performance ", is measured tensile strength and is selected dumbbell-shaped specimen, dumb bell sample data acquisition I type, and size is as described below:
Total length: 115mm; End width: 25.0 ± 1.0mm; Crevice length: 33.0 ± 2.0mm; Crevice width: 6.0mm; Transition limit, outside radius: 14.0 ± 1.0mm; Inner transition limit radius: 25.0 ± 1.0mm.
1. test method
(1) test specimen is prepared, and test piece is adopted to special die casting moulding, and then ring cutting becomes dumbbell shape, and size is as implied above, thickness 0.5～0.6mm.
(2) in sample subscript bid apart from line and clamping line, in gauge length line, with slide calliper rule, measure in the middle of gauge length and the thickness at 3, two ends, get its arithmetical av as sample thickness d, be accurate to 0.1mm; The initial distance length of measuring between gauge length line is designated as L.
(3) sample is the symmetrical and vertical center that is placed in clamper, aims at clamping wire clamp tight, at normal temperatures, and with the speed tensile test specimen of 50 ± 5mm/min, and load and extension value when measuring test specimen working portion and being stretched to fracture.
(4) result is calculated, and tensile strength is calculated as follows, and with MPa, represents: TS=
In formula: Fm---the maximum, force of record, unit is ox (N);
T---test length segment thickness, unit is millimeter (mm);
W---the width of cut-off knife crevice, unit is millimeter (mm).
2. test-results and analysis
As can be seen from Table 2, three kinds of water-proof materials all meet the demands, but the tensile strength of PCMA-1 reaches 1.2MPa, much larger than other bi-materials, and the special place that has larger interlayer shear in abrupt slope and thin-layer bituminous overlay etc. of using.
table 2: different matrix material tensile strengths
。
D. Test about Bond Strength
1. test method
(1) at " ∞ " type matrix middle part, open a sulculus, as Fig. 2 shows, then insert the small iron plate of thick 0.5mm, " ∞ " type matrix is made in moulding half, and the narrow waist of its test block place bond area is 22.5 * 22.3 ≈ 502mm2.
(2) on the adhesive surface of two and half " ∞ " font test block, by the even brushing sample of water-proof material consumption requirement, during as twice above brushing of need, interval ≮ 12h after each brushing.
(3) test specimen is placed in to the fixture of the electronic anti-folding instrument of horizontal bar type, and zeroing.Then starting anti-folding instrument to test specimen breaks.Pulling force is now cohesive force.Cohesive strength is calculated as follows:
In formula: θ---cohesive strength (MPa);
P---cohesive force (N);
A---" ∞ " font test specimen cross-sectional area, its value is 502mm2.
(2) test-results and analysis
Four kinds of matrix materials have been carried out to cohesive force test, and probe temperature is 20 ± 1 ℃, and draw speed is 50mm/min, and test-results is in Table 3.
Table 3: differing materials cohesive strength
As can be seen from the test results, three kinds of differing materials all disconnect from adhesive surface, illustrate that water-proof bond material and cement sand pulp bonding are good, and the cohesive strength of gained has reflected the cohesive strength of material.Wherein PCMA-1 cohesive strength is the highest, has reached 0.73MPa.
Test evaluation
Tack coat overlays at cement pavement asphalt the effect of playing waterproof and interlaminar bonding in structure, and therefore, the pavement performance of PCMA-1 is embodied in the mechanical property of cement concrete slab and New asphalt mixture layer composite structure.For the practical situation of real simulation coagulating cement natural asphalt overlay structure, utilize special rut plate die trial shaping test piece (thick 10cm).
First, the compound mixing and stirring is poured in the special die trial of 30cm * 30cm * 5cm into (proportioning of cement concrete is C:W:S:G=360:165:662:1345, water reducer adopts 1.6%), plug and pound even moulding, and plucking processing is carried out in its surface, then maintenance 28 days under standard conditions, after health finishes, surperficial laitance is removed in polishing; Secondly, brushing tack coat, then rolls the thick AC-13 bituminous concrete of 5cm, requires the voidage of bituminous concrete to be controlled at 4% left and right; Finally, demoulding core boring sampling, shears and pull-out test, every group of 3 parallel test specimens.
Shearing test
Tack coat resistance to shear is not enough, is to cause asphalt overlay disease one of the main reasons, all usings the shear behavior of tack coat as critical path performance index of tack coat both at home and abroad for the achievement in research of tack coat.
The loading rate that different shearing tests adopt is different, taked different loading rates to carry out horizontal shear test to matrix material both at home and abroad, result of study finds that the horizontal shear strength of material changes with loading velocity, when loading velocity is increased to 50mm/min from 1mm/min, the shearing resistance that its matrix material bears is also increased to 3.2MPa from 0.76 MPa.But the situation during for simulated automotive fast running as far as possible, general shearing test adopts 50mm/min, and this test also adopts this shearing rate.The shear property under different condition carries out analysis of experiments to it to adopt staight scissors method.
When to test specimen load application P, test specimen is subject to the shearing resistance of shear surface to be:
In formula:
---shearing resistance, MPa;
P---imposed load, N;
S---test specimen shear(ing) area, mm2.
Determining of 1.PCMA-1 optimum amount
In order to make PCMA-1 reach best effect in engineering section, PCMA-1 has been carried out to indoor simulation shear testing (staight scissors), to determine its optimum amount.During the test of PCMA-1 matrix material, consumption is respectively 1.1Kg/m2,1.3Kg/m2,1.5Kg/m2,1.7Kg/m2, and direct shearing speed 50mm/min, tests under 20 ℃ of conditions, and test-results is shown in accompanying drawing 1.
As seen from Figure 1, there is a peak value in PCMA-1 near consumption 1.5kg/m2, so the recommendation consumption of this test section PCMA-1 is 1.5Kg/m2.
When the spread quantity of tack coat is less, because tack coat is too thin, can not form one and bear shear-stress structural sheet, adhesive property a little less than, so now easily destroy.When tack coat spread quantity increases gradually, water-proof bond material forms a structural sheet gradually, and adhesive property significantly rises, and along with the increase of spread quantity, the slip resistance of interlayer is also increasing, when being increased to a certain degree (best spread quantity) now slip resistance reach peak value.When the spread quantity of tack coat continues to increase, in tack coat, produced matrix material more than needed, not only weakened the slip resistance of tack coat, and destroyed and overlayed the performance of end asphalt layer by layer, so tack coat easily destroys too, the spread quantity that therefore, should as far as possible guarantee tack coat is in optimum range left and right.
The impact of temperature on inter-layer shearing strength
Pitch class matrix material belongs to viscoelastic material, has stronger temperature sensitivity, and when low temperature, viscosity is large, and interlaminar bonding performance is good.When temperature raises, interlayer materials shows more viscous state, and matrix material has played lubricated effect at interlayer, and inter-layer shearing strength is declined, and causes interlayer generation shearing strain.Therefore, temperature sensitivity is also that can cement pavement asphalt overlay structure keep one of key of stability.
According to aforementioned definite PCMA-1 optimum amount, the optimum amount of determining rubber modified asphalt and SBS modifying asphalt that uses the same method is respectively 1.7Kg/m2 and 1.4Kg/m2, make three kinds of materials all under optimum amount level, carry out balance shearing test, shearing rate is 50mm/min, and test-results is in Table 4.As can be seen from Table 4, the temperature sensitivity of PCMA-1 matrix material is obviously little than other two kinds of matrix materials, when the slip resistance of 53.6%, 40 ℃ when the slip resistance of PCMA-1 under 40 ℃ of water bath condition is 40 ℃ is equivalent to respectively 20 ℃ and 0 ℃ 80.4% and 33.9% of slip resistance.
Table 4: the slip resistance of matrix material (MPa) under differing temps
Pull-out test
Existing achievement in research shows, at cement pavement asphalt, overlay in structure, the fatigue resistance that the cohesive strength of matrix material overlays structure to pitch has a significant impact, what shearing test was simulated is that pitch overlays the resistivity that structural sheet is subject to horizontal force action within the period of service, and pull-out test is the resistivity that simulation asphalt overlay is subject to Vertical Square upward force within the period of service.
Cohesive strength is the bonding situation that characterizes bonding layer material and levels interlayer, with shearing test, compare, pull-out test can also judge that cement pavement asphalt overlays the weak link of structural system according to destroying interface, analyzes its surface of fracture type when cohesive force is not enough.
The impact of temperature on interlayer pull strength
Definite optimum amount when the consumption of each matrix material of pull-out test adopts shearing test, rubber modified asphalt is with measuring 1.7kg/m2, and SBS modifying asphalt is with measuring 1.4kg/m2, and drawing speed is set as 10mm/min, and test-results is in Table 5.
Table 5: the pull strength of matrix material when differing temps
Can find out, the interlaminar bonding performance while not establishing tack coat is starkly lower than other interlaminar bonding performance that matrix material is set; PCMA-1 is because having heat cured feature, and it is all little that its tensile strength is compared other materials to the susceptibility of temperature; Under 40 ℃ of water bath condition, 66% left and right when PCMA-1 pull strength still can reach 40 ℃.
Experiment on fatigue properties
The anti-fatigue performance that interlaminar bonding material is good is to guarantee the asphalt overlay important factor in work-ing life, in use tack coat will constantly bear the Vehicle Load that gets off from asphalt overlay transmission, under impact repeatedly, rolling, the bonding situation between tack coat and levels will change to some extent.Therefore,, in order to evaluate the performance in tack coat opposing crack, will carry out fatigue property research to matrix material.
First pour into a mould C40 concrete girder, be of a size of 400mm * 100mm * 50mm, until girder concrete, reach after the length of time, on concrete girder, according to each tack coat construction technology and best painting amount brushing tack coat, except PCMA-1, other bonding layer materials are coated with rear spreading aggregate chips; Then the asphalt calculating is poured in die trial uniformly, on pressing machine, used the compound girder test specimen of static pressure method moulding.Require the voidage of shaping test piece and the voidage of marshal piece to differ and can not surpass 1%, asphalt and middle layer height overall 50mm.
Domestic achievement in research is thought, for asphalt, its fatigure failure mainly concentrates between 13 ℃～15 ℃, just in the north spring, melts phase, Used in Rainy Seasons of Southern Cities temperature, pavement structural strength has obviously and weakens at this season, is that pavement structure resisting fatigue is destroyed least favorable period.In addition, according to the achievement in research of SHRP, fatigure failure more than normal temperature is mainly distortion cumulative damage, does not have obvious tired meaning, under normal temperature, be the least favorable temperature that causes the fatigure failure of cement pavement asphalt overlay system, therefore the test temperature that this research adopts is 15 ℃.By the test specimen processing cooling 4h at room temperature, then before test, be put in protracted test machine maintenance 6h under test temperature.
With reference on domestic and international similar test and ground surface material fatigue-bending test related data basis, think that loading frequency gets 10Hz and can reflect preferably the action time of load to asphalt overlay, also having preferably can comparative.So the frequency that this research loads adopts 10Hz,
The fatigue lifetime of material and load waveform also have certain relation, and the minimum load that it has been generally acknowledged that sinusoidal wave load is fully-factored load 2%.Fully-factored load is got 3.0KN, as shown in Figure 2.Before test, with minimum load, test specimen is added to 10～15 seconds kinds in advance, whether well test each parts contact.
In this test, composite beam is carried out to stress control pattern, adopt 3 curved drawing (3PB) trial model, utilize LETRY microcomputer controlled electro-hydraulic servo fatigue test machine equipment to carry out composite beam fatigue test, stress level ratio is 0.4, the limit failing load of compound girder is 7.5KN, and institute's stress application is 3.0KN.
When test proceeds to certain number of times, mat formation a layer surface start to occur crack and gradually development, until composite beam disconnects completely, process of the test has been simulated the working order that tack coat and the layer of mating formation after crack appear in cement panel, the forming process that has reflected asphalt overlay clinking, also verified the whole fatigue property of each asphalt overlay textural association form, in Table 6 simultaneously.
Table 6: compound girder fatigue test results
As seen from the experiment, the good and bad order of fatigue property is: combine 3 > and combine 2 > and combine 4 > combinations 1.For combination 1 composite beam that tack coat is not set, after loading action 7704 times, composite beam is fracture completely just, much smaller than other combinations of tack coat are set.According to the requirement of JC/T 975-2005 " seam deformability 10000 times circulation without destroy ", combine 2, combine 3 and combine 4 and all can meet.PCMA-1 leads over other several combinations with the life-span of 20339 times, illustrates that PCMA-1 has higher fatigue lifetime, superior durability.
By above test-results, can draw and the invention has the advantages that:
(1) cohesive force is strong
Polymer asphaltic base water-proof bond material pull strength under normal temperature (20 ℃) condition is greater than 0.7MPa, shearing (tiltedly cutting for 40 °) intensity is greater than 1.2MPa.
(2) good penetrability
Polymer asphaltic base water-proof bond material initial motion viscosity is low, mobility is fabulous, there is less contact angle with cement concrete surface, can penetrate into the tiny gap of cement concrete pavement (bridge floor), can block seepage, infiltrate not clean clean dust on fixed interface simultaneously, prevent interlayer skinning.Because this, penetrate into the existence of " the thin nail " in trickle gap, greatly improved the adhesive property of water-proof tack coat and cement concrete pavement (bridge floor).
(3) construction technology is simple
Polymer asphaltic base water-proof bond material reaches after preserving period, and surface cure is stable, does not glue wheel and can resist rolling of construction machinery without rubble in the situation that.By the hard pitch compound in paving process, cover, after polymerization chemical reaction occurs, can fully wrap up bottom asphalt, form shear connector, cohesiveness and dense water have obtained great lifting.
(4) high-temperature stability is good
Polymer asphaltic base water-proof bond material contains thermosetting resin composition, thereby there is stronger high-temperature stability, when reaching 160 ℃, temperature still do not flow, shearing resistance (tiltedly cutting) up to 0.8MPa still can be provided in the time of 70 ℃, under the unfavourable condition such as very applicable damp-heat area, heavy traffic area and abrupt slope, thin layer, use.
(5) executive cost is few
Adopt polymer asphaltic base water-proof tack coat that water-proof bond material additionally arranges, former bridge floor (or cement panel), without milling, has been saved machinery, fuel cost.
The performance perameter of polymer asphaltic base water-proof bond material provided by the present invention is in Table 7:
Table 7:
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention with summary of the invention one of the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the slip resistance Changing Pattern figure of PCMA-1 different amounts;
Fig. 2 is composite beam fatigue test waveform schematic diagram.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
The different sections of highway that the present invention relies on Mei He to construct at a high speed, implements respectively the present invention.
The construction of pottery room bridge:
Pottery room bridge is positioned at plum river high speed K 3417+665 ~ K3417+985,400 meters of total lengths, construction area 10480m2, PCM A-1 consumption 15720Kg, minute left and right width construction.
In order to guarantee construction quality, during construction, the lowest temperature is answered >=10 ℃, and rainy day, large greasy weather, fresh breeze all must not be constructed above; Panel requires dry (continuous 2 days fine days).
A. remove graticule, transverse vibration deceleration strip, road button
Adopt small-sized milling machine to remove pavement strip and transverse vibration deceleration strip completely; Artificial removal's pavement reflecting road button;
B. road surface plucking dedusting
Adopt drum-type wire brush machinery plucking dust collecting process to increase surface roughness and the cleanliness factor of former road (bridge) face, remove surperficial greasy dirt, floating dust, the degree of depth should be less than 1mm, to occur that new concrete surface 60% is advisable;
C. high pressure water washing
First with pavement cleaning vehicle, be equipped with a small amount of sanitising agent and carry out wet-cleaned, then rinse with high-pressure spray gun water spray effects on surface, sanitising agent, granule dust etc. is rinsed well.Adopt the high-pressure watercart operation of the oblique layout of two rows, guarantee developing result;
D. high-pressure blast blows off
Before construction waterproof tack coat, with Handheld high-voltage blower fan, surface dirt is blown off.Adopt the high pressure positive blower operation of the oblique layout of three rows, guarantee to blow off effect;
Step 2, on-the-spot test, determine spread quantity: according to work on the spot area and sprinkling work efficiency, determine the disposable amount of agitation of polymer asphaltic base water-proof bond material, spread quantity is controlled at 1.5kg/m2;
Step 3, the polymer asphaltic base water-proof bond material spread in 30 minutes being stirred is completed;
A. get the raw materials ready in the front production base of constructing: in production base, by the weight of table 8 appointment, take, and modified emulsifying asphalt, water, aqueous epoxy resins, mixing and stirring, then transports to working-yard.
B. stir
Behind working-yard, aqueous epoxy resins, PA hot melt adhesive to adding specified wt in table 8 in the compound in step a, adopt mechanical stirring even, and churning time is 60 seconds, and sub-asphaltic base water-proof bond material secures satisfactory grades.
(3) spread
Stir in latter 30 minutes and whole polymer asphaltic base water-proof bond material spreads must be completed.Adopt small-sized machine spread, be equipped with artificial Cylinder coating brush.When steep slope road section is constructed, must toward lower direction, be constructed from eminence.
(4) health
After spread, must seal health in 24 hours to construction area, during any vehicle and pedestrian must not enter; In preserving period, must not drench with rain, if meet Changes in weather, must take awning to block.
PCMA-1 water-proof bond material universal performance and pavement performance parameter are in Table 8.
New construction part is controlled at 20cm with the width that partly overlaps of constructing.
Embodiment 2
Xia Pu village Bridge Construction:
Xia Pu village bridge is positioned at plum river high speed K 3389+175 ~ K3389+350,180 meters of total lengths, construction area 4720m2, PCMA-1 consumption 7080Kg, minute left and right width construction.
Adopt material preparation process and the construction technology of embodiment 1, press each component raw material of weight weighing of table 8 appointment.
PCMA-1 water-proof bond material universal performance and pavement performance parameter are in Table 8.
New construction part is controlled at 20cm with the width that partly overlaps of constructing.
embodiment 3
Xi Keng room Bridge Construction:
Xi Keng room bridge is positioned at plum river high speed K 3361+615 ~ K3389+860,280 meters of total lengths, construction area 6475m2, PCMA-1 consumption 9713Kg, minute left and right width construction.
Adopt material preparation process and the construction technology of embodiment 1, press each component raw material of weight weighing of table 8 appointment.
PCMA-1 water-proof bond material universal performance and pavement performance parameter are in Table 8.
New construction part is controlled at 20cm with the width that partly overlaps of constructing.
embodiment 4
Ji Xiong mountain Bridge Construction:
Ji Xiong mountain bridge is positioned at plum river high speed K 3322+745 ~ K3323+175,300 meters of total lengths, construction area 3913m2, PCMA-1 consumption 5870Kg, minute left and right width construction.
Adopt material preparation process and the construction technology of embodiment 1, press each component raw material of weight weighing of table 8 appointment.
PCMA-1 water-proof bond material universal performance and pavement performance parameter are in Table 8.
New construction part is controlled at 20cm with the width that partly overlaps of constructing.
embodiment 5
On Experimental Base section, adopt material preparation process and the construction technology of embodiment 1, press each component raw material of weight weighing of table 8 appointment.
PCMA-1 water-proof bond material universal performance and pavement performance parameter are in Table 8.
embodiment 6
On Experimental Base section, adopt material preparation process and the construction technology of embodiment 1, press each component raw material of weight weighing of table 8 appointment.Differently from embodiment 1 be that the unit spread quantity adopting is: 1(kg/m2).
PCMA-1 water-proof bond material universal performance and pavement performance parameter are in Table 8.
embodiment 7
On Experimental Base section, adopt material preparation process and the construction technology of embodiment 1, press each component raw material of weight weighing of table 8 appointment.Differently from embodiment 1 be that the unit spread quantity adopting is: 1.4(kg/m2).
PCMA-1 water-proof bond material universal performance and pavement performance parameter are in Table 8.
embodiment 8
As test on section, adopt material preparation process and the construction technology of embodiment 1, press each component raw material of weight weighing of table 8 appointment.Differently from embodiment 1 be that the unit spread quantity adopting is: 1.7(kg/m2).
PCMA-1 water-proof bond material universal performance and pavement performance parameter are in Table 8.
Table 8:
In above-described embodiment 1 to 4, the longitudinal gradient of all the people present's bridge is all greater than 3.5%, therefore very strict to the requirement of interlaminar bonding material.If water-proof tack coat performance is bad, easily make bridge occur early disease.In order to evaluate PCMA-1 at the effect of this all the people present's bridge, the pavement performance to all the people present's bridge after being open to traffic a year, investigation observed result shows: the pavement performance of all the people present's bridge is better, and the early diseases such as rut, passing and Water Damage do not appear in asphalt overlay.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (7)
1. a polymer asphaltic base water-proof bond material, it is characterized in that: the feed composition of described polymer asphaltic base water-proof bond material comprises: by weight, 100 parts of modified emulsifying asphalts, water 5-8 part, aqueous epoxy resins 4-9 part, aqueous epoxy curing agent 6-12 part, PA hot melt adhesive 6-8 part.
2. polymer asphaltic base water-proof bond material according to claim 1, it is characterized in that: the feed composition of described polymer asphaltic base water-proof bond material comprises: by weight, 100 parts of modified emulsifying asphalts, water 5-6 part, aqueous epoxy resins 5-8 part, aqueous epoxy curing agent 7.5-12 part, PA hot melt adhesive 7-8 part.
3. polymer asphaltic base water-proof bond material according to claim 2, it is characterized in that: the feed composition of described polymer asphaltic base water-proof bond material comprises: by weight, 100 parts of modified emulsifying asphalts, 6 parts, water, 6 parts of aqueous epoxy resins, 9 parts of aqueous epoxy curing agents, 7 parts of PA hot melt adhesives.
4. according to the preparation technology of the polymer asphaltic base water-proof bond material described in claim 1-3 any one, it is characterized in that: comprise the steps,
A. by composition of raw materials, claim modified emulsifying asphalt, water, aqueous epoxy curing agent, mixing and stirring;
B. to the compound in step a, add aqueous epoxy resins, the PA hot melt adhesive of formula ratio, adopt mechanical stirring even, churning time is 60 seconds, and sub-asphaltic base water-proof bond material secures satisfactory grades.
5. according to the construction technology of the polymer asphaltic base water-proof bond material described in claim 1-3 any one, it is characterized in that: comprise the steps,
Step 1, treatment of road surfaces
A. remove graticule, transverse vibration deceleration strip, road button;
B. surface galling dedusting, until occur that new concrete surface is more than 60%;
C. road pavement is carried out clean-out operation;
D. blow off road dust;
Step 2, on-the-spot test, determine spread quantity: according to work on the spot area and sprinkling work efficiency, determine the amount of agitation of polymer asphaltic base water-proof bond material, spread quantity is controlled at 1-1.7kg/m
2;
Step 3, the polymer asphaltic base water-proof bond material spread in 30 minutes being stirred is completed;
Step 4, health 24 hours.
6. the construction technology of polymer asphaltic base water-proof bond material according to claim 5, is characterized in that: in described step 2, spread quantity is 1.5kg/ m
2.
7. the construction technology of polymer asphaltic base water-proof bond material according to claim 5, is characterized in that: execute that man-hour requirement constructs at twice, new construction part partly overlaps width more than 20cm with constructing.
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| CN103740057B (en) * | 2013-12-20 | 2015-09-30 | 浙江省交通工程建设集团有限公司第二分公司 | Reaction resin sizing material and synchronous breakstone spreading machine |
| CN105694786B (en) * | 2014-11-25 | 2018-10-12 | 北京市政路桥管理养护集团有限公司 | Blanket type asphaltic road-mix surface course water-base epoxy bonding agent and its construction method |
| CN104449555B (en) * | 2014-11-28 | 2015-10-21 | 孙政 | Based on waterborne epoxy modified second-order reaction water-proof bond material and preparation method |
| CN107326770A (en) * | 2017-08-25 | 2017-11-07 | 长安大学 | A kind of pavement skid resistance pad pasting |
| CN108485477A (en) * | 2018-05-09 | 2018-09-04 | 韶关航佳信息咨询有限公司 | A kind of waterproof heat-resisting coating and its preparation method and application |
| CN109797648B (en) * | 2019-03-21 | 2021-10-26 | 河南省交通规划设计研究院股份有限公司 | Waterproof bonding layer material for cement concrete bridge deck pavement |
| CN113881371A (en) * | 2021-09-22 | 2022-01-04 | 无锡绿环交通科技有限公司 | Single-component second-order reaction water-based epoxy asphalt waterproof adhesive |
| CN115075080A (en) * | 2022-07-04 | 2022-09-20 | 南通交融建设工程有限公司 | Second-order water-based resin asphalt bonding layer construction process |
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| CN101928544B (en) * | 2010-09-21 | 2013-03-13 | 烟台德邦科技有限公司 | Polyamide hot cement with high softening point and low-temperature resistance, and preparing method thereof |
| CN102010608B (en) * | 2010-12-02 | 2013-01-02 | 东莞市东物合成材料有限公司 | Thermosetting emulsified flexible epoxy resin modified emulsified asphalt |
| CN102173663B (en) * | 2011-01-10 | 2013-06-12 | 武汉理工大学 | Waterborne epoxy modified emulsified asphalt concrete for steel bridge surface and preparation method thereof |
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