CN105862544A - Two-layer stress absorption band and preparation method thereof - Google Patents
Two-layer stress absorption band and preparation method thereof Download PDFInfo
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- CN105862544A CN105862544A CN201610362684.9A CN201610362684A CN105862544A CN 105862544 A CN105862544 A CN 105862544A CN 201610362684 A CN201610362684 A CN 201610362684A CN 105862544 A CN105862544 A CN 105862544A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/02—Arrangement or construction of joints; Methods of making joints; Packing for joints
- E01C11/04—Arrangement or construction of joints; Methods of making joints; Packing for joints for cement concrete paving
- E01C11/10—Packing of plastic or elastic materials, e.g. wood, resin
- E01C11/103—Joints with packings prepared only in situ; Materials therefor
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Abstract
The invention belongs to the technical field of road engineering, and relates to a two-layer stress absorption band and a preparation method thereof. The two-layer stress absorption band is paved with a stress absorption asphalt rubber paste layer, lower polyester glass fiber fabric, a high-elastic asphalt rubber paste layer and upper polyester glass fiber fabric from bottom to top in sequence. The invention aims at providing the two-layer stress absorption band capable of solving the problem that an asphalt pavement layer reflects and cracks and improving the durability of asphalt pavements and a preparation method of the two-layer stress absorption band.
Description
Technical field
The invention belongs to road engineering technical field, relate to a kind of double-layer stress absorption band and preparation method thereof.
Background technology
The reconstruction technology of " paracetamol " refers to keep old pavement globality, takes grouting reinforcement under plate, locally
The measures such as displacement or repairing, then directly overlay the technology of skin coat on Old cement concrete.This
Mode can make full use of the structure residual intensity of Old cement concrete, thinning thickness.But this skill
One of difficult problem that overlay reflection crack problem always highway circle that art faces is faced.Depositing of reflection crack
, not only break up the bulk strength of pavement structure, and owing to surface water permeates downwards along reflection crack, made
Surface layer is the most inharmonious to come off, and subgrade strength reduces, and has a strong impact on the service life on road surface.
In order to prevent or delay the early reflection crack problem of old cement concrete road Laying Asphalt Surface Course, research worker exists
Stress absorbing layer, geotextile interlayer, grid interlayer it is provided with between existing cement-concrete pavement plate and asphalt overlay,
But the processing method of this full paving formula significantly increases construction costs.Proposition is awarded to penetrating judgment in conjunction with Tongji University's what is said or talked about
The soft interlayer in local is set and can effectively reduce the achievement in research of overlay temperature stress, develop high elastic rubber agate
Hoof fat stress absorption carrying material, for disposing, through making for many years the local in old concrete plate seam and crack
With, although find this material can the generation in delayed reflex crack to a certain extent, can root but do not have
Control reflection crack, the most do not reverse the development trend of reflection crack.After using a period of time, due to material itself
Defect, stress absorption band comes off with bitumen layer, this most largely have impact on stress absorption band effect send out
Wave.
Summary of the invention
In order to solve above-mentioned technical problem present in background technology, it is an object of the invention to provide one can solve
Certainly Reflective Crack in Asphalt Overlays problem and can promote durability of asphalt pavement double-layer stress absorption band and
Its preparation method.
For achieving the above object, the present invention adopts the following technical scheme that
A kind of double-layer stress absorption band, it is characterised in that: described double-layer stress absorption band is laid the most successively
There are stress absorption asphalt adhesive pulp layer, bottom Fibergrass polyester mat, high resiliency asphalt adhesive pulp layer and top polyester glass fibre
Cloth.
As preferably, stress absorption asphalt adhesive pulp layer of the present invention is by stress absorption asphalt binder, ore deposit
Powder and fine aggregate are prepared from；The weight ratio of described stress absorption asphalt binder, breeze and fine aggregate is
9:15:76；The compression rebound modulu of described stress absorption asphalt adhesive pulp layer is 200MPa～400MPa, and thickness is
3mm, width is 0.3～0.4m；The particle diameter of the fine aggregate employed in described stress absorption asphalt adhesive pulp layer does not surpasses
Cross 5mm.
As preferably, stress absorption asphalt binder of the present invention be by 110# matrix pitch, PE, SBS,
Montmorillonite, stabilizer and compatilizer are prepared from；Described 110# matrix pitch, PE, SBS, montmorillonite,
The weight ratio of stabilizer and compatilizer is 100:3.2:1.1:10.3:0.2:0.3.
As preferably, high resiliency asphalt adhesive pulp layer of the present invention is fine by high resiliency asphalt binder, polyester
Dimension, lignin fibre, breeze and fine aggregate are prepared from, described high resiliency asphalt binder, polyester fiber,
The weight ratio of lignin fibre, breeze and fine aggregate is 13:0.25:0.1:15:71.65；Described high-elastic
The compression rebound modulu of property asphalt adhesive pulp layer is 300～500MPa, and thickness is 3mm, and width is 0.3～0.4m；Institute
The particle diameter stating the fine aggregate employed in high resiliency asphalt adhesive pulp layer is less than 5mm.
As preferably, high resiliency asphalt binder high resiliency asphalt binder of the present invention is by 110# substrate
Colophonium, rubber powder, SBS, kir, epoxy resin, stabilizer and compatilizer are prepared from；Described 110#
The weight ratio of matrix pitch, rubber powder, SBS, kir, epoxy resin, stabilizer and compatilizer is 100:
25:3:0.5:0.5:0.3:0.3；Described rubber powder is the rubber powder of 200 mesh.
A kind of method for preparing foregoing double-layer stress absorption band, it is characterised in that: described method bag
Include following steps:
1) stress absorption asphalt adhesive pulp layer is prepared:
1.1) stress absorption asphalt binder is prepared:
1.1.1) 110# matrix pitch is heated to 150 DEG C～160 DEG C；
1.1.2) montmorillonite adds: montmorillonite 100 DEG C, vacuum environment is dried 3h, after drying in exsiccator
Cool down standby；Under conditions of 150 DEG C～160 DEG C, montmorillonite is added step 1.1.1) in heating after 110#
In matrix pitch, under conditions of stir speed (S.S.) is 500r/min, add montmorillonite while stirring, it is ensured that
Montmorillonite is added within 10min；Carrying out high speed shear with high-speed shearing emulsion machine the most again, temperature controls
150 DEG C～160 DEG C, shear rate is 5000r/min, shears 10min and obtains the first compound；
1.1.3) SBS adds: under conditions of 165 DEG C～175 DEG C, SBS is joined 1.1.2) prepare
The first compound in, use emulsification pretreatment machine carry out high speed shear, be the bar of 5000r/min in shear rate
Stir 15min under part, obtain the second compound；
1.1.4) PE adds: under the conditions of 165 DEG C～175 DEG C, PE is joined 1.1.3) prepare the
In two compounds, emulsification pretreatment machine is used to carry out high speed shear, under conditions of shear rate is 5000r/min
Stirring 20min, obtains the 3rd compound；
1.1.5) stabilizer adds: under the conditions of 165 DEG C～175 DEG C, stabilizer is joined 1.1.4) prepare
In the 3rd compound obtained, use emulsification pretreatment machine to carry out high speed shear, be 5000r/min in shear rate
Under conditions of stir 15min, obtain the 4th compound；
1.1.6) compatilizer adds: under the conditions of 165 DEG C～175 DEG C, compatilizer is joined 1.1.5) prepare
In the 4th compound obtained, use emulsification pretreatment machine to carry out high speed shear, be 5000r/min in shear rate
Under conditions of stir 15min, then under conditions of stir speed (S.S.) is 1000r/min, stir 30min, obtain
Stress absorption asphalt binder；
1.2) by step 1.1) the stress absorption asphalt binder for preparing is heated to 165 DEG C～175 DEG C, and will
Fine aggregate is heated to 180 DEG C～190 DEG C, by step 1.1) the stress absorption asphalt binder for preparing adds thin
Mix and stir 1min in gathering materials, be subsequently adding breeze and mix and stir 1min, obtain stress absorption asphalt adhesive pulp layer, will be prepared into
The stress absorption asphalt adhesive pulp layer arrived is incubated under conditions of 165 DEG C～175 DEG C；
2) high resiliency asphalt adhesive pulp layer is prepared:
2.1) high resiliency asphalt binder is prepared；
2.1.1) 110# matrix pitch is heated to 175 DEG C～185 DEG C；
2.1.2) rubber powder adds: under the conditions of 175 DEG C～185 DEG C, rubber powder is added step 2.1.1) in
In 110# matrix pitch after heating, use emulsification pretreatment machine to carry out high speed shear, in shear rate be
Stir 60min under conditions of 3000r/min, obtain the 5th compound；
2.1.3) kir adds: the temperature of the 5th compound is maintained at 180 DEG C～190 DEG C, in step 2.1.2)
The 5th compound prepared adds kir, uses electrodeless constant speed to stir under conditions of 180 DEG C～190 DEG C
Mixing instrument stirring, stir speed (S.S.) is 2000r/min, and stirring 20min obtains the 6th compound；
2.1.4) SBS adds: under conditions of 180 DEG C～190 DEG C, SBS is joined step 2.1.3) prepare
In the 6th compound obtained, use emulsification pretreatment machine to carry out high speed shear, be 5000r/min in shear rate
Under conditions of stir 15min, obtain seven compounds；
2.1.5) epoxy resin adds: under the conditions of 180 DEG C～190 DEG C, epoxy resin is joined step 2.1.4)
In the 7th compound prepared, use emulsification pretreatment machine to carry out high speed shear, in shear rate be
Stir 20min under conditions of 5000r/min, obtain the 8th compound；
2.1.6) stabilizer adds: under the conditions of 180 DEG C～190 DEG C, stabilizer is joined step 2.1.5)
In the 8th compound prepared, use emulsification pretreatment machine to carry out high speed shear, in shear rate be
Stir 15min under conditions of 5000r/min, obtain the 9th compound；
2.1.7) compatilizer adds: under the conditions of 180 DEG C～190 DEG C, compatilizer is joined step 2.1.6)
In in the 9th compound, use emulsification pretreatment machine to carry out high speed shear, be the bar of 5000r/min in shear rate
Stir 15min under part, then use electrodeless constant speed stirring instrument under conditions of stir speed (S.S.) is 1000r/min, stir
Mix 30min, obtain high resiliency asphalt binder；
2.2) by step 2.1) the high resiliency asphalt binder for preparing is heated to 180 DEG C～190 DEG C, and will be thin
Gather materials and be heated to 180 DEG C～190 DEG C, polyester fiber is joined in fine aggregate and mix and stir 30s, be subsequently adding lignin
Fiber mixes and stirs 1min, is subsequently adding high resiliency asphalt binder and mixes and stirs 1min, is subsequently adding breeze and mixes and stirs 1min,
Obtain high resiliency asphalt adhesive pulp layer；By the high resiliency asphalt adhesive pulp layer for preparing 180 DEG C～the condition of 190 DEG C
Lower insulation；
3) double-layer stress absorption band is prepared
3.1) at the seam of Deteriorated concrete pavement plate and/or the gap in crack, step 1.1 is poured into) prepare
Stress absorption asphalt binder, after gap is filled and led up, spread in the range of seam and fracture faces wide 0.3～0.4m
Cloth stress absorption asphalt adhesive pulp layer, the thickness of described stress absorption asphalt adhesive pulp layer is 3mm；
3.2) upper surface in stress absorption asphalt adhesive pulp layer is laid and stress absorption asphalt adhesive pulp layer respective width
Bottom Fibergrass polyester mat, utilize small-sized rolling apparatus to roll at the upper surface of bottom Fibergrass polyester mat, form the
One ply stress absorption band；Small-sized rolling apparatus is when the upper surface of bottom Fibergrass polyester mat rolls, and stress absorption drips
The temperature of blue or green mucilage layer is not less than 150 DEG C；
3.3) the upper surface continuation at ground floor stress absorption band dispenses corresponding wide to stress absorption asphalt adhesive pulp layer
The high resiliency asphalt adhesive pulp layer of degree, the thickness of described high resiliency asphalt adhesive pulp layer is 3mm；
3.4) what the upper surface in high resiliency asphalt adhesive pulp layer was laid with high resiliency asphalt adhesive pulp layer respective width is upper
Portion's Fibergrass polyester mat, utilizes small-sized rolling apparatus to roll at the upper surface of top Fibergrass polyester mat, forms the second layer
Stress absorption band；Small-sized rolling apparatus when the upper surface of top Fibergrass polyester mat rolls, high resiliency asphalt mastic
The temperature of layer should be not less than 170 DEG C.
The present invention has the advantage that compared with the prior art
1) the double-layer stress absorption band low cost used and preparation simplicity, needed raw material kind is few.
2) the double-layer stress absorption band function admirable used, has that high temperature stability performance is good, Reflection Cracking
The advantages such as fatigue behaviour is good, can effectively alleviate bad adhesion, stress absorption effect that existing stress absorption band exists
The problems such as the best and durability is poor.Further, preparation process is simple, and device therefor cost is relatively low, can be effective
Reduce construction costs.
3) the stress absorption asphalt mastic that double-layer stress absorption band uses belongs to the modified asphalt material of soft stick nature,
It directly contacts with Deteriorated concrete pavement plate seam and crack, it is possible to effectively alleviate stress concentration phenomenon.Bilayer should
The high resiliency asphalt mastic that power absorption band uses belongs to elastic compared with the modified asphalt material big, tensile strength is big, it
Jointly act on two layers polyester glass-fiber-fabric, it is possible to the overall tensile strength of stress absorption band is effectively ensured, stoped
The continuation having reflection crack develops.
4) the preparation method step used is simple, reasonable in design and operation is simple, and prepared double-layer stress is inhaled
Take-up is excellent, including preparation stress absorption asphalt binder, preparation stress absorption asphalt mastic, prepares high resiliency
Asphalt binder, preparing four steps of high resiliency asphalt mastic, the process parameters design of each step rationally and realizes
Convenient, control simple, the performance of prepared Biological asphalt can be effectively ensured, and safe preparation process, reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of double-layer stress absorption band provided by the present invention；
Wherein:
1-stress absorption asphalt adhesive pulp layer；2-bottom Fibergrass polyester mat；3-high resiliency asphalt adhesive pulp layer；4-top
Fibergrass polyester mat；5-Deteriorated concrete pavement plate.
Detailed description of the invention
Below by drawings and Examples, the technical solution adopted in the present invention is described in further detail,
But invention is not limited only to embodiment disclosed below.
See Fig. 1, the invention provides a kind of double-layer stress absorption band, include the most successively: stress is inhaled
Receive asphalt adhesive pulp layer 1, bottom Fibergrass polyester mat 2, high resiliency asphalt adhesive pulp layer 3 and top Fibergrass polyester mat 4.
Stress absorption asphalt adhesive pulp layer 1 is coated at seam and the crack of Deteriorated concrete pavement plate 5, is on the one hand used for
Playing the effect of joint seal, on the one hand being used for absorbing stress (often has stress above old concrete plate seam and crack
The phenomenon concentrated), compression rebound modulu is 200MPa～400MPa, and thickness is 3mm, and width is 0.3～0.4m.
Stress absorption asphalt adhesive pulp layer 1 is combined by stress absorption asphalt binder, breeze and fine aggregate, should
It is stress absorption asphalt binder that power absorbs the proportioning of asphalt adhesive pulp layer 1: breeze: fine aggregate=9:15:76,
Fine aggregate is substantially suspended between the rubber cement that stress absorption Colophonium and breeze are formed, with the caking property of levels all
The best.
The proportioning of stress absorption asphalt binder is, 110# matrix pitch: PE:SBS: montmorillonite: stabilizer:
Compatilizer=100:3.2:1.1:10.3:0.2:0.3.Wherein, PE is called for short polyethylene, is that ethylene is aggregated
A kind of thermoplastic resin prepared；SBS is a kind of asphalt modifier finished product, i.e. Styrene-Butadiene block copolymerization
Thing；Stabilizer is sulfur, and compatilizer is aromatic naphtha.
The particle size range of fine aggregate is 0～5mm.
High resiliency asphalt adhesive pulp layer 3 is coated in the top of bottom Fibergrass polyester mat 2, and compression rebound modulu is
300～500MPa, thickness is 3mm, and width is 0.3～0.4m.
High resiliency asphalt adhesive pulp layer 3 is combined by high resiliency asphalt binder, breeze and fine aggregate, high resiliency
The proportioning of asphalt adhesive pulp layer 3 is high resiliency asphalt binder: polyester fiber: lignin fibre: breeze: carefully collect
Material=13:0.25:0.1:15:71.65.Wherein, to be that limestone is levigate obtain breeze；Fine aggregate is 0～5mm
Limestone aggregates.
The proportioning of high resiliency asphalt binder is, 110# matrix pitch: rubber powder: SBS: kir: epoxy
Resin: stabilizer: compatilizer=100:25:3:0.5:0.5:0.3:0.3.Rubber powder is the rubber of 200 mesh
Rubber powder.
The particle size range of fine aggregate is 0～5mm.
It addition, it is simple, reasonable in design and operate simple, prepared double to the invention also discloses a kind of method step
The stress absorption band preparation method of ply stress absorption band function admirable, the method comprises the following steps:
Stress absorption asphalt adhesive pulp layer 1 is combined by stress absorption asphalt binder, breeze and fine aggregate, should
It is stress absorption asphalt binder that power absorbs the proportioning of asphalt adhesive pulp layer 1: breeze: fine aggregate=9:15:76,
Fine aggregate is substantially suspended between the rubber cement that stress absorption Colophonium and breeze are formed, with the caking property of levels all
The best.
The proportioning of stress absorption asphalt binder is, 110# matrix pitch: PE:SBS: montmorillonite: stabilizer:
Compatilizer=100:3.2:1.1:5.3:0.2:0.3.Wherein, stabilizer is sulfur, and compatilizer is aromatic hydrocarbons
Oil.
Step one, preparation stress absorption asphalt binder.
1.1) matrix pitch heating: matrix pitch is heated to temperature T1, wherein T1=150 DEG C～160 DEG C.
1.2) montmorillonite adds:
Montmorillonite 100 DEG C, the vacuum environment of-0.1MPa dries 3h, cool down standby after drying in exsiccator.
Under the conditions of temperature T1, by montmorillonite add 1.1) in heating after matrix pitch in, use electrodeless perseverance
Speed stirring instrument, under conditions of stir speed (S.S.) is 500r/min, adds montmorillonite, it is ensured that while stirring at 10min
Within add montmorillonite；Carrying out high speed shear with high-speed shearing emulsion machine the most again, temperature controls at T1, shears
Speed is 5000r/min, shears 10min and obtains the first compound.
1.3) SBS adds: under the conditions of temperature T2, wherein T2=165 DEG C～175 DEG C, SBS is joined 1.2)
In in the first compound, use emulsification pretreatment machine to carry out high speed shear, be the bar of 5000r/min in shear rate
Stir 15min under part, obtain the second compound；
1.4) PE adds: under the conditions of temperature T2, PE is joined 1.3) in the second compound, employing is cut
Cut mulser and carry out high speed shear, under conditions of shear rate is 5000r/min, stirs 20min, obtains the 3rd
Compound.
1.5) stabilizer adds: under the conditions of temperature T2, stabilizer is joined 1.4) in the 3rd compound,
Use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stirs 15min,
To the 4th compound.
1.6) compatilizer adds: under the conditions of temperature T2, compatilizer is joined 1.5) in the 4th compound,
Use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stir 15min, so
Rear employing electrodeless constant speed stirring instrument, under conditions of stir speed (S.S.) is 1000r/min, stirs 30min, obtains stress
Absorb asphalt binder.
Step 2, preparation stress absorption asphalt adhesive pulp layer 1
Stress absorption asphalt binder is heated to temperature T2, fine aggregate is heated to temperature T4, wherein
T4=180 DEG C～190 DEG C, stress absorption asphalt binder is added in fine aggregate and mixes and stirs 1min, be subsequently adding breeze
Mix and stir 1min, obtain stress absorption asphalt adhesive pulp layer 1.
Step 3, prepare high resiliency asphalt binder.
3.1) matrix pitch heating: matrix pitch is heated to temperature T3, wherein T3=175 DEG C～185 DEG C.
3.2) rubber powder add: under the conditions of temperature T3, by rubber powder add 3.1) in heating after substrate drip
In green grass or young crops, use emulsification pretreatment machine to carry out high speed shear, stir under conditions of shear rate is 3000r/min
60min, obtains the 5th compound；
3.3) kir adds: the 5th mixture temperature is maintained at T4, by predetermined ratio 3.2) in the 5th
Adding kir in compound, use the stirring instrument stirring of electrodeless constant speed under the conditions of temperature T4, stir speed (S.S.) is
2000r/min, stirring 20min obtain the 6th compound；
3.4) SBS adds: under the conditions of temperature T4, SBS is joined 3.3) in the 6th compound, use
Emulsification pretreatment machine carries out high speed shear, stirs 15min, obtain seven under conditions of shear rate is 5000r/min
Compound；
3.5) epoxy resin add: under the conditions of temperature T4, epoxy resin is joined 3.4) in the 7th mixing
In material, use emulsification pretreatment machine to carry out high speed shear, stir under conditions of shear rate is 5000r/min
20min, obtains the 8th compound.
3.6) stabilizer adds: under the conditions of temperature T4, stabilizer is joined 3.5) in the 8th compound,
Use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stirs 15min,
To the 9th compound.
3.7) compatilizer adds: under the conditions of temperature T4, compatilizer is joined 3.6) in the 9th compound,
Use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stir 15min, so
Rear employing electrodeless constant speed stirring instrument, under conditions of stir speed (S.S.) is 1000r/min, stirs 30min, obtains high-elastic
Property asphalt binder.
Step 4, prepare high resiliency asphalt adhesive pulp layer 3
High resiliency asphalt binder is heated to temperature T4, fine aggregate is heated to temperature T4, polyester fiber is added
Enter in fine aggregate, mix and stir 30s, be subsequently adding lignin fibre and mix and stir 1min, be subsequently adding high resiliency Colophonium knot
Close material and mix and stir 1min, be subsequently adding breeze and mix and stir 1min, obtain high resiliency asphalt adhesive pulp layer 3.
Step 5, prepare double-layer stress absorption band
5.1) preparation
The stress absorption asphalt adhesive pulp layer 1 prepared is incubated under the conditions of temperature T2, the high resiliency that will prepare
Asphalt adhesive pulp layer 3 is incubated under the conditions of temperature T4.
5.2) double-layer stress absorption band making
Pouring into stress absorption asphalt binder at the seam of Deteriorated concrete pavement plate and the gap in crack, gap is filled out
After Ping, in the range of seam and fracture faces wide 0.3～0.4m, dispense stress absorption asphalt adhesive pulp layer 1, control
Thickness is 3mm.Following closely, the bottom polyester of respective width is laid on the surface of stress absorption asphalt adhesive pulp layer 1
Glass-fiber-fabric 2, and then small-sized rolling apparatus rolls on bottom Fibergrass polyester mat 2 surface, forms ground floor stress and inhales
Take-up.
Small-sized rolling apparatus when bottom Fibergrass polyester mat 2 surface is rolled, the temperature of stress absorption asphalt adhesive pulp layer 1
150 DEG C should be not less than.
Continue to dispense the high resiliency asphalt adhesive pulp layer 3 of respective width on the surface of ground floor stress absorption band, control
Thickness is 3mm.Following closely, the top polyester glass of respective width is laid on the surface of high resiliency asphalt adhesive pulp layer 3
Fine cloth 4, and then small-sized rolling apparatus rolls on top Fibergrass polyester mat 4 surface, forms second layer stress absorption
Band.
Small-sized rolling apparatus is when top Fibergrass polyester mat 4 surface is rolled, and the temperature of high resiliency asphalt adhesive pulp layer 3 should
It is not less than 170 DEG C.
In order to verify the present invention further, carry out large scale reflection crack fatigue test, compared for tradition single
Ply stress absorption band, double-layer stress absorption band of the present invention and the Reflection Cracking fatigue behaviour of stress absorbing layer, bag
Include load fatigue behaviour and temperature fatigue performance.The bitumen layer structure used and material type are shown in Table 1.Test knot
Fruit is as shown in table 2 and table 3.
Table 1 asphalt overlaying Rotating fields and material type
Table 2 asphalt overlay large scale temperature fatigue finder charge effect number of times
| Structure type | Just split number of times/time | Split eventually number of times/time | Fracture width/mm |
| Structure 1 | 224 | 895 | 1.2 |
| Structure 2 | 305 | 1217 | 0.9 |
| Structure 3 | 278 | 956 | 1.0 |
Table 3 asphalt overlay large scale load Fatigue Test Loads effect number of times
| Structure type | Just split number of times/ten thousand time | Split number of times/ten thousand time eventually | Fracture width/mm |
| Structure 1 | 12.68 | 16.92 | 1.1 |
| Structure 2 | 14.25 | 18.11 | 0.8 |
| Structure 3 | 11.70 | 14.63 | 1.5 |
From table 2 and table 3, use the overlay knot of double-layer stress absorption band local punishment Old cement concrete
The temperature fatigue performance of structure and load fatigue behaviour are all optimum, have been even more than adding of full paving stress absorbing layer
Paving structure.
Claims (6)
1. a double-layer stress absorption band, it is characterised in that: described double-layer stress absorption band is equipped with stress absorption asphalt adhesive pulp layer, bottom Fibergrass polyester mat, high resiliency asphalt adhesive pulp layer and top Fibergrass polyester mat the most successively.
Double-layer stress absorption band the most according to claim 1, it is characterised in that: described stress absorption asphalt adhesive pulp layer is prepared from by stress absorption asphalt binder, breeze and fine aggregate；The weight ratio of described stress absorption asphalt binder, breeze and fine aggregate is 9:15:76；The compression rebound modulu of described stress absorption asphalt adhesive pulp layer is 200MPa ~ 400MPa, and thickness is 3mm, and width is 0.3 ~ 0.4m；The particle diameter of the fine aggregate employed in described stress absorption asphalt adhesive pulp layer is less than 5mm.
Double-layer stress absorption band the most according to claim 2, it is characterised in that: described stress absorption asphalt binder is to be prepared from by 110# matrix pitch, PE, SBS, montmorillonite, stabilizer and compatilizer；The weight ratio of described 110# matrix pitch, PE, SBS, montmorillonite, stabilizer and compatilizer is 100:3.2:1.1:10.3:0.2:0.3.
4. according to the double-layer stress absorption band described in claim 1 or 2 or 3, it is characterized in that: described high resiliency asphalt adhesive pulp layer is prepared from by high resiliency asphalt binder, polyester fiber, lignin fibre, breeze and fine aggregate, and the weight ratio of described high resiliency asphalt binder, polyester fiber, lignin fibre, breeze and fine aggregate is 13:0.25:0.1:15:71.65；The compression rebound modulu of described high resiliency asphalt adhesive pulp layer is 300 ~ 500MPa, and thickness is 3mm, and width is 0.3 ~ 0.4m；The particle diameter of the fine aggregate employed in described high resiliency asphalt adhesive pulp layer is less than 5mm.
Double-layer stress absorption band the most according to claim 4, it is characterised in that: described high resiliency asphalt binder high resiliency asphalt binder is prepared from by 110# matrix pitch, rubber powder, SBS, kir, epoxy resin, stabilizer and compatilizer；The weight ratio of described 110# matrix pitch, rubber powder, SBS, kir, epoxy resin, stabilizer and compatilizer is 100:25:3:0.5:0.5:0.3:0.3；Described rubber powder is the rubber powder of 200 mesh.
6. the method being used for preparing the double-layer stress absorption band described in claim 5, it is characterised in that: said method comprising the steps of:
1) stress absorption asphalt adhesive pulp layer is prepared:
1.1) stress absorption asphalt binder is prepared:
1.1.1) 110# matrix pitch is heated to 150 DEG C ~ 160 DEG C；
1.1.2) montmorillonite adds: montmorillonite 100 DEG C, vacuum environment is dried 3h, cool down standby after drying in exsiccator；Under conditions of 150 DEG C ~ 160 DEG C, montmorillonite is added step 1.1.1) in heating after 110# matrix pitch in, under conditions of stir speed (S.S.) is 500r/min, add montmorillonite while stirring, it is ensured that within 10min, add montmorillonite；Carrying out high speed shear with high-speed shearing emulsion machine the most again, temperature controls at 150 DEG C ~ 160 DEG C, and shear rate is 5000r/min, shears 10min and obtains the first compound；
1.1.3) SBS adds: under conditions of 165 DEG C ~ 175 DEG C, SBS is joined 1.1.2) in the first compound of preparing, use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stirs 15min, obtains the second compound；
1.1.4) PE adds: under the conditions of 165 DEG C ~ 175 DEG C, PE is joined 1.1.3) in the second compound of preparing, use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stirs 20min, obtains the 3rd compound；
1.1.5) stabilizer adds: under the conditions of 165 DEG C ~ 175 DEG C, stabilizer is joined 1.1.4) in the 3rd compound for preparing, use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stirs 15min, obtains the 4th compound；
1.1.6) compatilizer adds: under the conditions of 165 DEG C ~ 175 DEG C, compatilizer is joined 1.1.5) in the 4th compound for preparing, emulsification pretreatment machine is used to carry out high speed shear, 15min is stirred under conditions of shear rate is 5000r/min, then under conditions of stir speed (S.S.) is 1000r/min, stirring 30min, obtains stress absorption asphalt binder；
1.2) by step 1.1) the stress absorption asphalt binder for preparing is heated to 165 DEG C ~ 175 DEG C, fine aggregate is heated to 180 DEG C ~ 190 DEG C, by step 1.1) the stress absorption asphalt binder for preparing adds in fine aggregate and mixes and stirs 1min, it is subsequently adding breeze and mixes and stirs 1min, obtain stress absorption asphalt adhesive pulp layer, the stress absorption asphalt adhesive pulp layer prepared is incubated under conditions of 165 DEG C ~ 175 DEG C；
2) high resiliency asphalt adhesive pulp layer is prepared:
2.1) high resiliency asphalt binder is prepared；
2.1.1) 110# matrix pitch is heated to 175 DEG C ~ 185 DEG C；
2.1.2) rubber powder adds: under the conditions of 175 DEG C ~ 185 DEG C, rubber powder is added step 2.1.1) in heating after 110# matrix pitch in, use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 3000r/min, stirs 60min, obtains the 5th compound；
2.1.3) kir adds: the temperature of the 5th compound is maintained at 180 DEG C ~ 190 DEG C, in step 2.1.2) the 5th compound for preparing adds kir, the stirring instrument stirring of electrodeless constant speed is used under conditions of 180 DEG C ~ 190 DEG C, stir speed (S.S.) is 2000r/min, and stirring 20min obtains the 6th compound；
2.1.4) SBS adds: under conditions of 180 DEG C ~ 190 DEG C, SBS is joined step 2.1.3) in the 6th compound for preparing, use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stirs 15min, obtains seven compounds；
2.1.5) epoxy resin adds: under the conditions of 180 DEG C ~ 190 DEG C, epoxy resin is joined step 2.1.4) in the 7th compound for preparing, use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stirs 20min, obtains the 8th compound；
2.1.6) stabilizer adds: under the conditions of 180 DEG C ~ 190 DEG C, stabilizer is joined step 2.1.5) in the 8th compound for preparing, use emulsification pretreatment machine to carry out high speed shear, under conditions of shear rate is 5000r/min, stirs 15min, obtains the 9th compound；
2.1.7) compatilizer adds: under the conditions of 180 DEG C ~ 190 DEG C, compatilizer is joined step 2.1.6) in the 9th compound, emulsification pretreatment machine is used to carry out high speed shear, 15min is stirred under conditions of shear rate is 5000r/min, then use electrodeless constant speed stirring instrument under conditions of stir speed (S.S.) is 1000r/min, stirring 30min, obtains high resiliency asphalt binder；
2.2) by step 2.1) the high resiliency asphalt binder for preparing is heated to 180 DEG C ~ 190 DEG C, fine aggregate is heated to 180 DEG C ~ 190 DEG C, polyester fiber is joined in fine aggregate and mix and stir 30s, it is subsequently adding lignin fibre and mixes and stirs 1min, it is subsequently adding high resiliency asphalt binder and mixes and stirs 1min, it is subsequently adding breeze and mixes and stirs 1min, obtain high resiliency asphalt adhesive pulp layer；The high resiliency asphalt adhesive pulp layer prepared is incubated under conditions of 180 DEG C ~ 190 DEG C；
3) double-layer stress absorption band is prepared
3.1) at the seam of Deteriorated concrete pavement plate and/or the gap in crack, step 1.1 is poured into) the stress absorption asphalt binder for preparing, after gap is filled and led up, dispensing stress absorption asphalt adhesive pulp layer in the range of the wide 0.3 ~ 0.4m of seam and fracture faces, the thickness of described stress absorption asphalt adhesive pulp layer is 3mm；
3.2) upper surface in stress absorption asphalt adhesive pulp layer lays the bottom Fibergrass polyester mat with stress absorption asphalt adhesive pulp layer respective width, utilizes small-sized rolling apparatus to roll at the upper surface of bottom Fibergrass polyester mat, forms ground floor stress absorption band；Small-sized rolling apparatus is when the upper surface of bottom Fibergrass polyester mat rolls, and the temperature of stress absorption asphalt adhesive pulp layer is not less than 150 DEG C；
3.3) upper surface at ground floor stress absorption band continues to dispense the high resiliency asphalt adhesive pulp layer with stress absorption asphalt adhesive pulp layer respective width, and the thickness of described high resiliency asphalt adhesive pulp layer is 3mm；
3.4) upper surface in high resiliency asphalt adhesive pulp layer lays the top Fibergrass polyester mat with high resiliency asphalt adhesive pulp layer respective width, utilizes small-sized rolling apparatus to roll at the upper surface of top Fibergrass polyester mat, forms second layer stress absorption band；Small-sized rolling apparatus is when the upper surface of top Fibergrass polyester mat rolls, and the temperature of high resiliency asphalt adhesive pulp layer should be not less than 170 DEG C.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270986A (en) * | 2017-07-06 | 2017-10-20 | 张仲来 | A kind of anti-crack water gauge shell structure |
| CN110965422A (en) * | 2019-12-13 | 2020-04-07 | 江苏中路工程技术研究院有限公司 | Flexible splicing paving structure and construction method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204898456U (en) * | 2015-09-02 | 2015-12-23 | 南京同安道路工程有限公司 | Asphalt pavement containing rubber asphalt stress absorbing layer |
| CN205839518U (en) * | 2016-05-26 | 2016-12-28 | 山西省交通科学研究院 | A kind of double-layer stress absorption band |
-
2016
- 2016-05-26 CN CN201610362684.9A patent/CN105862544B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204898456U (en) * | 2015-09-02 | 2015-12-23 | 南京同安道路工程有限公司 | Asphalt pavement containing rubber asphalt stress absorbing layer |
| CN205839518U (en) * | 2016-05-26 | 2016-12-28 | 山西省交通科学研究院 | A kind of double-layer stress absorption band |
Non-Patent Citations (3)
| Title |
|---|
| 刘大梁等: ""有机化蒙脱土改善SBS改性沥青性能的研究"", 《建筑材料学报》 * |
| 王慧等: ""高弹性橡胶玛蹄脂应力吸收带的抗反射裂缝疲劳性能研究"", 《武汉理工大学学报》 * |
| 郜业强等: ""半刚性路边反射裂缝的应力吸收复合夹层防治技术研究"", 《交通科技》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270986A (en) * | 2017-07-06 | 2017-10-20 | 张仲来 | A kind of anti-crack water gauge shell structure |
| CN110965422A (en) * | 2019-12-13 | 2020-04-07 | 江苏中路工程技术研究院有限公司 | Flexible splicing paving structure and construction method thereof |
| CN110965422B (en) * | 2019-12-13 | 2021-11-05 | 江苏中路工程技术研究院有限公司 | Flexible splicing paving structure and construction method thereof |
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