CN107098621A - The design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt - Google Patents
The design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt Download PDFInfo
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- CN107098621A CN107098621A CN201710207649.4A CN201710207649A CN107098621A CN 107098621 A CN107098621 A CN 107098621A CN 201710207649 A CN201710207649 A CN 201710207649A CN 107098621 A CN107098621 A CN 107098621A
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- 239000004593 Epoxy Substances 0.000 title claims abstract description 110
- 239000010426 asphalt Substances 0.000 title claims abstract description 95
- 238000013461 design Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 21
- 239000010959 steel Substances 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 71
- 239000000203 mixture Substances 0.000 claims abstract description 69
- 239000000463 material Substances 0.000 claims abstract description 27
- 238000001764 infiltration Methods 0.000 claims abstract description 21
- 230000008595 infiltration Effects 0.000 claims abstract description 21
- 150000001875 compounds Chemical class 0.000 claims abstract description 19
- 239000011159 matrix material Substances 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 239000003822 epoxy resin Substances 0.000 claims abstract description 14
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 14
- 238000007493 shaping process Methods 0.000 claims abstract description 3
- 238000002474 experimental method Methods 0.000 claims description 20
- 239000011295 pitch Substances 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 13
- 238000007711 solidification Methods 0.000 claims description 12
- 230000008023 solidification Effects 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000009490 roller compaction Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 230000001143 conditioned effect Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims 1
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims 1
- 239000004568 cement Substances 0.000 claims 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 description 8
- 239000011384 asphalt concrete Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000005336 cracking Methods 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 238000010998 test method Methods 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 229930185605 Bisphenol Natural products 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 240000006909 Tilia x europaea Species 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- C04B26/26—Bituminous materials, e.g. tar, pitch
-
- 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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
-
- 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
- E01D19/08—Damp-proof or other insulating layers; Drainage arrangements or devices ; Bridge deck surfacings
- E01D19/083—Waterproofing of bridge decks; Other insulations for bridges, e.g. thermal ; Bridge deck surfacings
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of design method of steel box girder bridge plane system life-cycle epoxy asphalt mixture, it is based on determination compound on the basis of epoxy asphalt mixture pavement performance and service life, it will first gather materials, matrix pitch, epoxy resin and high-temperature curing agent are preheated respectively, then epoxy resin is well mixed with curing agent, stirred with matrix pitch, the aggregate blending for adding preheating obtains high-temp epoxy asphalt, high-temp epoxy asphalt after mix is put into health in digitlization baking oven, take out shaping Marshall test specimens and impact energy test specimen；Bituminous epoxy consumption and Mixture Ratio are determined with " mix temperature, voidage, stability, impact energy, infiltration threshold value " index；The epoxy asphalt mixture designed using this method has the pavement performances such as good high-temperature behavior, water resistance and fatigue performance, improves the service life of steel box girder bridge face system high temperature epoxy asphalt mixture, saves substantial amounts of fund and maintenance cost.
Description
Technical field
Led the present invention relates to a kind of building material technical field, more particularly to the research of steel box girder bridge plane system pavement technique
Domain.
Background technology
With the fast development of Chinese national economy, Long span steel box girder bridge starts a large amount of construction, paving steel bridge deck skill
Art research is risen, and situation of material of steel bridges deck surfacing conventional at present mainly has a SMA classes, cast-type class, bituminous epoxy class and
ERS classes.In use, generally believe that reasonable and reliable deck paving system there should be good resistance to elevated temperatures, prevent
Aqueous energy, antiskid performance, endurance cracking performance and compatibility of deformation performance.
With the performance of different pavement materials and system in actual use, epoxy asphalt mixture Deck pavement phase
To showing preferable pavement performance, but from mating formation service condition using epoxy asphalt concrete steel box girder bridge plane system in the world
From the point of view of, using effect is unsatisfactory, and longitudinal cracking, fatigue cracking, bulge and pit etc. occur in use in Partial Bridges
Disease.Epoxy asphalt mixture mat formation some problems shown in use make its promote by a certain degree of limit
System.The advantage of epoxy asphalt mixture how is played, its shortcoming is improved, it is preferably scientific research for field of engineering technology service to make it
Worker's focus of attention.
The content of the invention
It is an object of the invention to provide the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt,
Overcome deck paving resistance to elevated temperatures, water resistance, antiskid performance, endurance cracking performance and deformation association that prior art is designed
The problem of tonality can not be good.
Life-cycle refers to design, construct and the whole usage cycles of operation management life-span, this hair in order to achieve the above object
It is bright to adopt the following technical scheme that：
First, life-cycle high-temp epoxy asphalt Formula Development
By epoxy resin and high-temperature curing agent in 55~65 DEG C of digitlization baking oven heating and thermal insulation 3~4 hours, it is and advance
The matrix pitch of heating is well mixed, and is subsequently poured into 185 DEG C~195 DEG C of compound mix pot the progress of gathering materials with preheating
Compound, is then carried out health by mix, then compound is made test specimen respectively and rolled in tired mould, with development certainly
" impact energy " experiment, " infiltration threshold " experiment and wheel tracking test, Marshall experiment, low temperature bend test determine compound most
Good asphalt content and mix composing design.
2nd, compound raw material and mix composing design
(1) bituminous epoxy cementitious matter and high-temp epoxy asphalt mixture
Table 1, epoxy host performance technologies index
Table 2, high-temperature curing agent performance technologies index
Performance after table 3, blending epoxy health solidification
Technical indicator after table 4, high-temp epoxy asphalt mixture health solidification
(2) gather materials
Gather materials using parabasalt rubble or diabase gravel, high-temp epoxy aggregate quality used for asphalt mixture should be met
《The requirement of highway steel box girder bridge floor paving technique of design and construction guide》.
(3) mix composing design
A, each shelves are gathered materials sieved first
B, each shelves aggregate quality percentage is designed, specific formula for calculation according to " coarse aggregate skeleton obturator area method "
It is as follows：
Under coarse aggregate, fine aggregate, the quality percentage of miberal powder, bitumen aggregate ratio, tamping state coarse aggregate pine dress clearance rate and
Equation is met between asphalt mixture design voidage：
qc+qf+qp=100 (2-1)
More than in two formulas, qc、qf、qpThe respectively mass percent of coarse aggregate, fine aggregate, miberal powder；qaFor asphalt content
Mass percent；VDRCFor coarse aggregate clearance rate under the real state of dry-tamping；VDSFor designing asphalt mixture voidage；γsFor coarse aggregate
Bulk density；γfAnd γpThe respectively apparent density of fine aggregate and miberal powder；γaFor pitch relative density；VDRCIt can pass through
Experiment is measured
γcFor coarse aggregate apparent density
3rd, test material preparation
High-temp epoxy Bitumen Mix Design is using Marshall test methods, impact energy test method, infiltration
Threshold test method etc..Specific manufacturing process is as follows：
(1) it will gather materials, miberal powder, Marshall moulds and tired mould are put into 180~200 DEG C of digitlization baking oven and be incubated
4~5 hours；
(2) AH-70 matrix pitches are put into 160 DEG C of digitlization baking oven and are incubated 2~3 hours, and epoxy resin and high temperature are solid
Agent is put into 55~65 DEG C of baking oven and is incubated 3~4 hours respectively；
(3) compound mix pot is warming up to 185 DEG C~195 DEG C, pours into warmed-up gathering materials and stir 3min with miberal powder；
(4) epoxy resin and high-temperature curing agent are taken out, according to 60~70:40~30 ratios carry out mixing 3~4min
Into blending epoxy, pour into load weighted AH-70 matrix pitches and stir 2min, mixture proportion is blending epoxy：
AH-70 matrix pitch=40~50:60~50, bituminous epoxy cementitious matter is formed, bituminous epoxy cementitious matter is then poured into 185 DEG C
3~5min of mix in~195 DEG C of aggregate blending pots, forms high temperature mix epoxy asphalt mixture；
(5) by the high-temp epoxy asphalt mixed be put into health 60 in 160~180 DEG C of digitlization baking oven~
90min, conditioned time since be put into digitlization baking oven in timing；
(6) take out the high-temp epoxy asphalt after health and be respectively put into warmed-up Marshall die trials and fatigue
It is two-sided to hit real Marshall die trials 70 times in mould, Marshall test specimens are formed, with roller-compaction instrument in tired mould
Epoxy asphalt mixture is rolled, until being rolled by design height position；
(7) Marshall test specimens and tired mould are put into 55~65 DEG C of digitlization baking oven and solidify 48h；
(8) form removal processing is carried out to the high-temp epoxy asphalt after solidification, impact energy test specimen uses two-sided cast-cutting saw
Cut into 250mm, width 30mm, high 35mm cuboid test specimen；
(9) test health solidification after Marshall test specimens bulk specific gravity, voidage, Marshall stabilitys,
The indexs such as VMA, VFA, and determine asphalt optimum content and mixed with reference to " impact energy ", " construction depth ", " infiltration threshold value " index
Close material gradation composition；
(10) according to step 1~7, with reference to related specifications shaping high-temp epoxy Wheel Tracking Specimens for Asphalt Mixtures, small beam deflection
Test specimen, cuboid fatigue sample etc., then carry out high-temp epoxy asphalt mixture in track test, low temperature bend test, " infiltration door
Sill " experiment, " impact energy " are tested to examine the pavement performance of high temperature compound；
For being followed the steps below from " the impact energy experiment " developed and " experiment of infiltration threshold "：
A, impact energy experiment
By compound cut growth 250mm, width 30mm, high 35mm cuboid test specimen, the test specimen of well cutting is put into
It is incubated, as needed the control temperature of adjustment incubator, when impact ductility test need to be carried out, is such as schemed in environment incubator
Shown in 1, take out and carry out load test after test specimen immediately, then added on MTS testing machines by 100mm/min of loading speed
Carry, as shown in Fig. 2 it is impact energy that this patent, which defines shadow part shop front product in figure, with Qrigin softwares and Matlab self-programmings
Sequence calculates the size that hatched area in figure is impact energy.
B, infiltration threshold experiment
As shown in figure 3, the fixed support of sealed graduated cylinder and belt switch valve is put on the rut plate after health solidification,
By graduated cylinder topped up with water, the decrease speed and the relation of time of water in controlled valve, test graduated cylinder are opened, and is converged into as shown in Figure 4
Infiltration speed and voidage between relation curve, be fitted by application of curve Origin softwares, determine high temperature ring
Oxygen asphalt infiltration threshold value, when carrying out high-temp epoxy Asphalt Mixture Design, it is desirable to which the voidage of compound is less than
The infiltration threshold value that this experiment is determined, the infiltration threshold value voidage that this experiment is determined is 3.35%.
The present invention beneficial effect be：By being heated to gathering materials under conditions of 185 DEG C -200 DEG C, building stones are effectively removed
In moisture, compound can be avoided to produce the phenomenon of " bulge " in work progress.Epoxy is calculated by Marshall testers
The voidage of asphalt, with reference to impact energy method, infiltration threshold test method, wheel tracking test, low-temperature test, construction depth
Determine the cementitious matter consumption and optimum gradation of high-temp epoxy asphalt.The epoxy asphalt mixture determined by this method
Long-acting durable purpose can be reached, substantial amounts of test period and cost, the handling characteristics with the life-cycle is saved.Overcome current ring
The bulge phenomenon that produces and process is used in work progress caused by oxygen Asphalt Mixture Design method is unreasonable using operation
The middle phenomenon for occurring destruction cracking.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, not
Inappropriate limitation of the present invention is constituted, in the accompanying drawings：
Fig. 1 is impact energy Test Drawing；
Fig. 2 is impact energy calculating figure；
Fig. 3 is infiltration threshold Test Drawing；
Fig. 4 is infiltration threshold computations figure；
Fig. 5 is to draft three kinds of levels with formula figure；
Fig. 6 be it is differently strained under the conditions of high-temp epoxy asphalt-fatigue behaviour lab diagram.
Embodiment
The present invention is described in detail below in conjunction with specific embodiment, herein with the illustrative examples and explanation of the present invention
For explaining the present invention, but it is not as a limitation of the invention.
Embodiment 1
1. life-cycle high-temp epoxy asphalt Formula Development
Epoxy resin and high-temperature curing agent are mixed into blending epoxy, are epoxy resin in mass ratio：Hot setting
Agent=60:40；Then blending epoxy is mixed with matrix pitch by fixed proportion, is hybrid epoxidized tree in mass ratio
Fat：Matrix pitch=50:50, bituminous epoxy cementitious matter is formed, is mixed with gathering materials of preheating in advance under conditions of 185 DEG C
Close, reached the purpose for removing moisture in building stones, prevent pit disease from occurring；Carry out the volume parameter test of Marshall test specimens
And combine the present invention " impact energy " experiment with " infiltration threshold " test, determine high-temp epoxy asphalt from asphalt mixture consumption and
Mix-design, makes it have good pavement performance and the handling characteristics of life-cycle.
2. high-temp epoxy Bitumen Mix Design
(1) cementitious matter performance
Bituminous epoxy cementitious matter mainly includes bis-phenol and epichlorohydrin based epoxy resin host, develops HMPRT curing agent (no certainly
Containing inorganic filler, pigment and other harmful substances) and matrix pitch composition, the key technical indexes is as shown in table 5 below, 6,7,8.
The epoxy host performance technologies index of table 5
Table 6, high-temperature curing agent performance technologies index
Performance after table 7, blending epoxy health solidification
Technical indicator after the high-temp epoxy asphalt mixture health of table 8 solidification
(2) gather materials performance
Gather materials used in present case for basalt building stones, but patent of the present invention is not limited merely to basalt, also is adapted for other
Property is gathered materials, and present case selects third gear basalt aggregate, and leading indicator of gathering materials is as shown in table 9 below, 10, miberal powder is common lime
Stone ore powder.
Table 9 gathers materials the key technical indexes
Each shelves of table 10 gather materials screening result
(3) match ratio formula is designed
Following three kinds of levels are drafted with formula, as shown in figure 5, it is 6.7% to draft bitumen aggregate ratio, are molded according to following steps I-VIII
High-temp epoxy bitumen mixture specimen：
I will gather materials, miberal powder, Marshall moulds and tired mould are put into 180~200 DEG C of digitlization baking oven and are incubated 4
~5 hours；
II AH-70 matrix pitches are put into 160 DEG C of digitlization baking oven and are incubated 2~3 hours, epoxy resin and hot setting
Agent is put into 55~65 DEG C of baking oven and is incubated 3 hours respectively；
Compound mix pot is warming up to 185 DEG C by III, is poured into warmed-up gathering materials and is stirred 3min with miberal powder；
IV takes out epoxy resin and high-temperature curing agent, according to 60:40 ratios mix 3~4min into hybrid epoxidized
Resin, then solidifies blending epoxy health, then pours into load weighted AH-70 matrix pitches and stir 2min, mixes and matches somebody with somebody
Ratio is blending epoxy：AH-70 matrix pitch=50:50, bituminous epoxy cementitious matter is formed, it is then that bituminous epoxy is cementing
Material pours into 3~5min of mix in 185 DEG C of aggregate blending pots, forms high temperature mix epoxy asphalt mixture；
V by the high-temp epoxy asphalt mixed be put into health 60 in 160~180 DEG C of digitlization baking oven~
90min, conditioned time since be put into digitlization baking oven in timing；
High-temp epoxy asphalt after VI taking-up health is respectively put into warmed-up Marshall die trials and fatigue
It is two-sided to hit real Marshall die trials 70 times in mould, Marshall test specimens are formed, with roller-compaction instrument in tired mould
Epoxy asphalt mixture is rolled, until being rolled by design height position；
Marshall test specimens and tired mould are put into 55~65 DEG C of digitlization baking oven and solidify 48h by VII；
High-temp epoxy asphalt after VIII pair of solidification carries out form removal processing, and impact energy test specimen uses two-sided cutting sawing
It is cut into 250mm, width 30mm, high 35mm cuboid test specimen.
Marshall test specimen volume parameters are as shown in table 11 below, the voidage of test high-temp epoxy bitumen mixture specimen,
Stability, construction depth, the isometric index of VMA, VFA.
The Marshall test specimen volume parameters of table 11
To determine optimum oil-stone ratio, it is 6.1%, 6.5%, 6.9%, 7.3%, 7.7% and 8.1% to take bitumen aggregate ratio, is measured
High-temp epoxy asphalt Marshall result of the tests are as shown in table 12, using patent of the present invention " impact energy " and " infiltration door
Sill " test method, tests the impact energy and infiltration threshold value of high-temp epoxy asphalt, with reference to the result of the test of table 11, really
Determine compound asphalt optimum content and bitumen aggregate ratio.
Compound impact energy is tested under the different gradation formula of table 12.
According to the experimental study achievement of table 12, it is determined that level is matched somebody with somebody with one for the level that this project is selected.It is design to match somebody with somebody one with level
Fancy grade is matched somebody with somebody, and is molded Marshall test specimens, the volume index of high-temp epoxy asphalt under different bitumen aggregate ratios is measured after solidification
Parameter as shown in table 13, carries out infiltration test, as shown in figure 4, as a result showing when bitumen aggregate ratio is more than 6.5%, high-temp epoxy drip
Blue or green mixture gap rate is less than infiltration threshold value 3.35%, with reference to table 12 and the result of table 13, and it is bitumen aggregate ratio to determine optimum formula
6.9% and level match somebody with somebody one.
The high-temp epoxy asphalt Marshall result of the tests (solidification test specimen) of table 13
3. high-temp epoxy Asphalt Mixture Performance is studied
Epoxy asphalt mixture under the optimum oil-stone ratio determined according to above step is research object, passes through high temperature rut
The checking high-temp epoxy drip such as experiment, the experiment of girder low temperature bend test, construction depth, immersion Marshall experiments and fatigue test
The pavement performance of blue or green compound.
A, compression strength research
According to《Highway engineering pitch and Asphalt Mixture Experiment code》(JTJ052-2000) surveyed using uniaxial compression test
Determine the compression strength of epoxy asphalt mixture, test temperature is 25 DEG C, and loading speed is 5mm/min.Test specimen using Ф 100 ×
100mm cylinder test specimen, test after tested high-temp epoxy asphalt compression strength be 28MPa, illustrate the epoxy
Asphalt has preferable anti-pressure ability.
B, crack resistance at low-temperature research
Using asphalt low temperature bend test evaluate epoxy asphalt concrete cryogenic property, test temperature for-
15 DEG C, loading speed is 50mm/min, and as shown in table 14, limit in mean strain is 2.28E-03 to result of the test, is shown with good
Good crack resistance at low-temperature.
The low-temperature bending test of table 14 (- 15 DEG C)
C, water stabilizing research
According to《Standard specification for construction and acceptance of highway asphalt pavement》(JTJF40-2004) in " asphalt Marshall is steady
Fixed degree experiment " (T0709-2000), examines the water stability of TAF epoxy asphalt concretes.Compare 60 DEG C, the Marshall after 48h
Stability, epoxy asphalt concrete Marshall test specimens residual stability is 96%, meets Marshall residual stabilities and is higher than
80% requirement, test data shows that TAF epoxy asphalt concretes have excellent water stability.
D, epoxy asphalt mixture high-temperature stability
The high-temperature rutting test result of high-temp epoxy bituminous concrete shows, wheel load 0.7MPa, is tried at a temperature of 60 DEG C, 70 DEG C
Part is basically unchanged shape, and high-temp epoxy bituminous concrete Marshall test specimens conserve 4h under 180 DEG C of high temperature, and in this temperature detection
Marshall stabilitys, Marshall stability test results are about 23.0kN, show to mix using this formula high-temp epoxy pitch
Solidifying soil has excellent superhigh temperature resistant performance.
The TAF epoxy asphalt concrete wheel tracking test data of table 4.7
E, fatigue behaviour research
According to《Highway engineering pitch and Asphalt Mixture Experiment code》(JTJ052-2000), using COOPER testing machines
Studied by the fatigue behaviour of (500 μ ε, 700 μ ε, 800 μ ε, 900 μ ε) epoxy asphalt mixture under differently strained level,
As shown in fig. 6, showing that epoxy asphalt mixture has unlimited service life in 700 μ ε fatigue will not occur for experimental study broken
It is bad.
It can be seen that the high-temp epoxy asphalt designed using the present invention has good road according to result above analysis
With performance, extend the Road Service Life time limit, maintenance cost is saved, with larger promotional value.
The technical scheme provided above the embodiment of the present invention is described in detail, specific case used herein
Principle and embodiment to the embodiment of the present invention are set forth, and the explanation of above example is only applicable to help and understands this
The principle of inventive embodiments；Simultaneously for those of ordinary skill in the art, according to the embodiment of the present invention, in specific embodiment party
It will change in formula and application, in summary, this specification content should not be construed as limiting the invention.
Claims (10)
1. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt, it is characterised in that：
Step is as follows：
A. gathering materials, miberal powder, Marshall moulds and tired mould, AH-70 matrix pitches, epoxy resin, high-temperature curing agent it is pre-
Heat；
B. heating compound mix pot, pour into it is warmed-up gather materials and miberal powder, be stirred；
C. epoxy resin, high-temperature curing agent are mixed, is subsequently poured into load weighted AH-70 matrix pitches and stirs, form ring
Oxygen bituminous cements；
D. bituminous epoxy cementitious matter is poured into mix in compound mix pot, forms high temperature mix epoxy asphalt mixture；
E. the high-temp epoxy asphalt mixed is put into health in digitlization baking oven；
F. the high-temp epoxy asphalt after health is taken out to be respectively put into warmed-up Marshall die trials and tired mould,
It is two-sided to hit real Marshall die trials, form Marshall test specimens；The bituminous epoxy in tired mould is mixed with roller-compaction instrument
Close material to be rolled, until being rolled by design height position；
G. Marshall test specimens and tired mould are put into digitlization baking oven and solidified；
H. form removal processing is carried out to the high-temp epoxy asphalt after solidification, impact energy test specimen is cut into using two-sided cast-cutting saw
Required test specimen；
I. Marshall test specimens bulk specific gravity, voidage, Marshall stabilitys, VMA, VFA after test health solidifies
Index, and determine asphalt optimum content and mixture gradation group with reference to " impact energy ", " construction depth ", " infiltration threshold value " index
Into；
J. according to step a-g, shaping high-temp epoxy Wheel Tracking Specimens for Asphalt Mixtures, girder bending specimen, cuboid fatigue sample,
Then carry out high-temp epoxy asphalt mixture in track test, low temperature bend test, " infiltration threshold " experiment, " impact energy " experiment with
Examine the pavement performance of high temperature compound.
2. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt according to claim 1, its
It is characterised by：
In the step a gathering materials, miberal powder, Marshall moulds and tired mould be put into 180~200 DEG C of digitlization baking oven
Insulation 4~5 hours.
3. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt according to claim 1 or 2,
It is characterized in that：
AH-70 matrix pitches are put into the step a in 160 DEG C of digitlization baking oven and are incubated 2~3 hours, epoxy resin and
High-temperature curing agent is put into 55~65 DEG C of baking oven and is incubated 3~4 hours respectively.
4. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt according to claim 1, its
It is characterised by：
Compound mix pot is warming up to 185 DEG C~195 DEG C in the step b, warmed-up gather materials and miberal powder stirring is poured into
3min。
5. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt according to claim 1, its
It is characterised by：
The step c epoxy resins and high-temperature curing agent are according to 60~70:40~30 ratios carry out mix 3-4min into
Blending epoxy, then pour into load weighted AH-70 matrix pitches and stir 2min, mixture proportion is blending epoxy：
AH-70 matrix pitch=40~50:60~50, form bituminous epoxy cementitious matter.
6. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt according to claim 1, its
It is characterised by：
In the step d, bituminous epoxy cementitious matter is poured into 3~5min of mix in 185 DEG C~195 DEG C aggregate blending pots, formed
High temperature mix epoxy asphalt mixture.
7. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt according to claim 1, its
It is characterised by：
The high-temp epoxy asphalt mixed is put into health in 160~180 DEG C of digitlization baking oven in the step e
60~90min, conditioned time since be put into digitlization baking oven in timing.
8. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt according to claim 1, its
It is characterised by：
Taken out in the step f high-temp epoxy asphalt after health be respectively put into warmed-up Marshall die trials and
It is two-sided to hit real Marshall die trials 70 times in tired mould, Marshall test specimens are formed, with roller-compaction instrument to tired mould
In epoxy asphalt mixture rolled, until be rolled by design height position.
9. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt according to claim 1, its
It is characterised by：
Marshall test specimens and tired mould are put into 55~65 DEG C of digitlization baking oven and solidify 48h in the step g.
10. the design method of steel box girder bridge plane system life-cycle high-temp epoxy asphalt according to claim 1, its
It is characterised by：
Form removal processing is carried out in the step h to the high-temp epoxy asphalt after solidification, impact energy test specimen is cut using two-sided
Sawing cuts into 250mm, width 30mm, high 35mm cuboid test specimen.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560962A (en) * | 2017-09-22 | 2018-01-09 | 广东省长大公路工程有限公司 | Cast asphalt is mated formation with epoxy resin waterproof layer thermal load test apparatus and method |
| CN109096991A (en) * | 2018-08-14 | 2018-12-28 | 江苏增光复合材料科技有限公司 | A kind of antiskid mist sealing material and its construction method |
| CN111676827A (en) * | 2020-06-23 | 2020-09-18 | 保利长大工程有限公司 | High-performance wide-temperature-range epoxy asphalt concrete full-width paving construction method |
| CN114093439A (en) * | 2021-11-03 | 2022-02-25 | 群康(上海)新材料科技有限公司 | Design method of plant-mixed hot recycled asphalt mixture with high proportion RAP |
| CN116013444A (en) * | 2023-03-27 | 2023-04-25 | 武汉理工大学 | Epoxy asphalt mixture construction temperature calculation method, electronic equipment and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279254A (en) * | 2011-05-09 | 2011-12-14 | 华南理工大学 | Research method for formulation of disease-free epoxy asphalt mixture for large-span steel bridge deck |
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2017
- 2017-03-31 CN CN201710207649.4A patent/CN107098621A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279254A (en) * | 2011-05-09 | 2011-12-14 | 华南理工大学 | Research method for formulation of disease-free epoxy asphalt mixture for large-span steel bridge deck |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560962A (en) * | 2017-09-22 | 2018-01-09 | 广东省长大公路工程有限公司 | Cast asphalt is mated formation with epoxy resin waterproof layer thermal load test apparatus and method |
| CN109096991A (en) * | 2018-08-14 | 2018-12-28 | 江苏增光复合材料科技有限公司 | A kind of antiskid mist sealing material and its construction method |
| CN109096991B (en) * | 2018-08-14 | 2020-10-23 | 江苏增光复合材料科技有限公司 | Anti-sliding fog seal material and construction method thereof |
| CN111676827A (en) * | 2020-06-23 | 2020-09-18 | 保利长大工程有限公司 | High-performance wide-temperature-range epoxy asphalt concrete full-width paving construction method |
| CN114093439A (en) * | 2021-11-03 | 2022-02-25 | 群康(上海)新材料科技有限公司 | Design method of plant-mixed hot recycled asphalt mixture with high proportion RAP |
| CN114093439B (en) * | 2021-11-03 | 2022-11-22 | 上海群康沥青科技股份有限公司 | Design method of plant-mixed hot recycled asphalt mixture with high proportion RAP |
| CN116013444A (en) * | 2023-03-27 | 2023-04-25 | 武汉理工大学 | Epoxy asphalt mixture construction temperature calculation method, electronic equipment and storage medium |
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