CN107165018A - A kind of simple grain footpath asphalt macadam ultra-thin wearing layer and preparation method thereof - Google Patents
A kind of simple grain footpath asphalt macadam ultra-thin wearing layer and preparation method thereof Download PDFInfo
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- CN107165018A CN107165018A CN201710330674.1A CN201710330674A CN107165018A CN 107165018 A CN107165018 A CN 107165018A CN 201710330674 A CN201710330674 A CN 201710330674A CN 107165018 A CN107165018 A CN 107165018A
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- asphalt
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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
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/35—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them
- E01C7/353—Toppings or surface dressings; Methods of mixing, impregnating, or spreading them with exclusively bituminous binders; Aggregate, fillers or other additives for application on or in the surface of toppings with exclusively bituminous binders, e.g. for roughening or clearing
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention relates to a kind of simple grain footpath asphalt macadam ultra-thin wearing layer and preparation method thereof, belong to road engineering technical field；It is made up of simple grain footpath bituminous concrete moxture and emulsified asphalt bond capacity；Preparation method following steps：（1）Using special integrated laying equipment, emulsified asphalt is pre-heated to 70 ~ 80 DEG C, sprayed by the distributing device assembled before the horizontal distributing device of paver, 0.6 ~ 0.9kg/m of spread quantity2, make emulsified asphalt force to be demulsified and vaporize the moisture contained by discharge, form not contaminated and destruction water-proof tack coat；（2）Hot-laid mixture is paved, and the simple grain footpath bituminous concrete moxture thickness paved is between 8 ~ 12mm, and 170 ~ 180 DEG C of paving material is compacted using hydrostatic profile；（3）When the pavement temperature of compacting is reduced to less than 50 DEG C, you can opening is open to traffic；This method need not carry out the aggregate grading design of complexity, make quality control easy and effective；The simple grain footpath asphalt macadam ultra-thin wearing layer prepared using the technique has excellent antiskid, draining and anti-acoustic capability.
Description
Technical field
The present invention relates to a kind of simple grain footpath asphalt macadam ultra-thin wearing layer and preparation method thereof, and in particular to one kind has excellent
Simple grain footpath asphalt macadam ultra-thin wearing layer of different antiskid, draining and anti-acoustic capability and preparation method thereof, belongs to road engineering skill
Art field.
Background technology
With the fast development of market economy, increasingly perfect, the continuous improvement of vehicle speed, the magnitude of traffic flow of transport development
Increasingly increase and the vehicle heavy duty even ratio of super-heavy load is continuously increased, higher technology is proposed to China's bituminous paving will
Ask（Such as safe, quick, durable, anti-heavy duty etc.）.Due to traditional plain asphalt mixture performance and currently used environment
Inadaptable, some bituminous pavings, which have just been open to traffic, shortly there occurs large-scale destruction.How to strengthen and improve making for bituminous paving
It is the weight that various countries' road Scientific Research Workers face with quality, the service life on extension road surface and raising road surface integrated service level
Want task.
All the time, people by modified pitch is prepared in polymer addition pitch by improving the performance of bituminous paving.
In numerous polymer modified asphalts, SBS modified pitch is widely popularized and applied with its superior pavement performance.It is logical
Cross substantial amounts of pavement investigation to find, in mountain area, the continuous long abrupt slope uphill, downhill section of High aititude knob, even if employing
, still there is serious rut disease quickly in the means such as SBS modified pitch, neutral or alkaline building stones after coming into operation.
Because the intensity of asphalt is from the embedded squeezing structure between pitch and aggregate, the mechanical characteristic of asphalt
Realization with other functions depends on asphalt mastic characteristic and constituted with Mineral Aggregate and the contract in space.Good drip
Blue or green Mixture Composition Design depends not only upon asphalt performance and asphalt mastic performance, also relies on the embedded squeezing between coarse aggregate particle
With rational remaining space.Therefore existing asphalt either close-graded, open gradation or half open gradation, it gathers materials typically
All it is made up of several grades of rubbles, forms certain level and match somebody with somebody.《Standard specification for construction and acceptance of highway asphalt pavement》14 grades of defined coarse aggregate point,
From S1 to S14, generally mix with material and be made up of 3 ~ 5 grades of coarse aggregates and one grade of fine aggregate.Therefore, mix proportion design process is answered
Miscellaneous, the composition requirement that each shelves gather materials is strict, quality control difficulties.If mix-design is unreasonable or Construction control is not enough,
It will all cause the early damage on road surface, such as pit, rut, bellding, ftracture, gather around bag, the safety of influence road operation and comfortable
Property.
Therefore, a kind of compound technology is developed, it is not necessary to carry out complicated aggregate grading design, quality control is simply had
Effect has great importance.
The content of the invention
It is an object of the invention to provide a kind of simple grain footpath asphalt macadam ultra-thin wearing layer and preparation method thereof, it is not necessary to carries out
Complicated aggregate grading design, makes quality control easy and effective, the ultra-thin abrasion of simple grain footpath asphalt macadam prepared using the technique
Layer has excellent antiskid, draining and anti-acoustic capability.
To realize the purpose of foregoing invention, the technical scheme that the present invention takes is as follows：
A kind of simple grain footpath asphalt macadam ultra-thin wearing layer, is made up of following material：
（1）Simple grain footpath bituminous concrete moxture, 8 ~ 12mm of thickness；
（2）Emulsified asphalt bond capacity, every square metre of 0.6 ~ 0.9Kg of spread quantity.
Step（1）Described compound need not carry out aggregate grading design, only use one grade of coarse aggregate, particle size range for 2 ~
Between 6mm；Compound contains the filler 5% ~ 8% less than 0.075 mm, wherein 2% is conventional portland cement, 3% ~ 6% is lime
The thin miberal powder of stone mill.
By carrying out checking test, the marshall compaction number of times of checking test 50 times, the item of checking based on 4.0% bitumen aggregate ratio
Mesh and requirement such as table 1.If Verification Project can not meet requirement, can by ±（0.1%~0.3%）Adjust bitumen aggregate ratio, can also 5 ~
Filer content is adjusted between 8%.If it is necessary, can also add 0.3 ~ 0.5% lignin fibre of compound total amount.
The Marshall Test Verification Project of table 1 and index request table
| Verification experimental verification project | Unit | Technical requirements | Test method |
| Porosity | % | More than 25 | T0708 |
| Leakage analysis losing | % | Less than 0.3 | T0732 |
| Ken Tebao disperses loss | % | Less than 10 | T0733 |
| Residual stability | % | More than 85 | T0790 |
| Frozen-thawed cycled retained strength ratio | % | More than 80 | T0729 |
Step（1）Described compound is hot-laid mixture, mixes and stirs temperature for 180 ~ 190 DEG C.
Step（1）Described compound cementitious matter uses superelevation adhered modification pitch, and its 60 DEG C of dynamic viscosities must be more than
200000Pa.s, bitumen technology index must meet table 2 and require；The thickness of asphalt membrane reaches 12 ~ 15um, has compound good
Durability.
The requirement of the superelevation adhered modification bitumen technology quality index of table 2
Step（2）Described emulsified asphalt water-proof tack coat is high-performance modified emulsified asphalt, to ensure waterproof and interlaminar bonding
Performance, its technical indicator will reach the requirement of table 3.
The requirement of the high-performance modified emulsified asphalt technology of table 3
A kind of preparation method of simple grain footpath asphalt macadam ultra-thin wearing layer：It is same using bituminous mixture laying and emulsified asphalt spread
The integrated Paving Techniques construction that step is carried out（See Fig. 2）, specifically include following steps：
（1）Using special integrated laying equipment, emulsified asphalt is pre-heated to 70 ~ 80 DEG C, passes through the horizontal cloth of paver
The distributing device sprinkling assembled before device, 0.6 ~ 0.9kg/m of spread quantity2, make emulsified asphalt force to be demulsified and vaporize contained by discharge
Moisture, forms not contaminated and destruction water-proof tack coat；
（2）Hot-laid mixture is paved, and the simple grain footpath bituminous concrete moxture thickness paved is in 8 ~ 12mm
Between, paving material answers 170 ~ 180 DEG C；With 11 ~ 13 tons of dual-steel wheel road roller immediately following compacting after paving, pressure process is adopted
Use hydrostatic profile；
（3）When the pavement temperature of compacting is reduced to less than 50 DEG C, you can opening is open to traffic.
The beneficial effects of the invention are as follows：
（1）Only with one grade of rubble material, without fine aggregate, particle constitutes, thickness all different from existing various asphalts
Very thin, only about 10mm but forms macrovoid, open gradation road surface.
（2）The aggregate grading design of complexity need not be carried out, quality control is easy and effective, the simple grain footpath asphalt macadam of preparation
Ultra-thin wearing layer has excellent antiskid, draining and anti-acoustic capability, it is adaptable to each standard highway, the new pavement of town road
（Bridge floor）Upper layer or old pavement（Bridge floor）Overlay.
Figure of description
Fig. 1 simple grains footpath asphalt macadam ultra-thin wearing layer structural representation；
Fig. 2 Paving Techniques schematic diagrames.
1 is simple grain footpath asphalt macadam ultra-thin wearing layer（About 10mm）, 2 be high-performance modified emulsified asphalt water-proof tack coat
（0.6~0.9kg/m2）, 3 be new pavement（Bridge floor）Middle surface layer or old pavement（Bridge floor）Top layer, 4 be modified emulsifying asphalt, and 5 are
Simple grain footpath bituminous concrete moxture；6 be emulsified asphalt spread mouthful, and 7 be the horizontal cloth spiral of compound.
Embodiment
The present invention is described in further details below by example, these examples are only used for illustrating the present invention, do not limit
The scope of the present invention processed.
Embodiment 1
A kind of simple grain footpath asphalt macadam ultra-thin wearing layer, is made up of following material：
（1）One grade of rational sieve aperture scope is selected between 2 ~ 6mm, 2.36 ~ 4.75mm is selected, sieve Time-sharing control is more than maximum grain
Footpath（Such as 4.75mm）With less than minimum grain size（Such as 2.36mm）Particle be less than 5%.
（2）Superelevation adhered modification asphalt material is preferentially selected by the requirement of table 1.
（3）Select Portland cement stand-by, using the cement of 32.5 labels.
（4）Optimum selecting asphalt special mineral powder, the content less than 0.075mm is more than 70%, containing less than 0.6mm
Amount is more than 100%.
（5）In laboratory in following ratio mixing simple grain footpath bituminous concrete moxture：
Single Stone 91.7%, cement 2%, miberal powder 3%, pitch 4.3%.
（6）The compound mixed hits real 50 shapings marshal pieces by two sides, and then the Listed Items of carry out table 2 are tested
Card.It is verified, determines bitumen aggregate ratio.
（7）Compound is mixed and stirred by the above-mentioned various material proportions finally determined, 180 DEG C of temperature, drop temperature 180 is mixed and stirred
DEG C, the Automobile Transportation that qualified compound covers lagging facility using having paves to front court.
（8）By the high-performance modified emulsified asphalt of requirement optimum selecting of table 3.
A kind of preparation method of simple grain footpath asphalt macadam ultra-thin wearing layer：Spilt using bituminous mixture laying with emulsified asphalt
The integrated Paving Techniques construction that cloth is synchronously carried out, specifically includes following steps：
（1）Using special integrated laying equipment, emulsified asphalt is pre-heated to 70 DEG C, before the horizontal distributing device of paver
The distributing device sprinkling of assembling, spread quantity 0.6kg/m2, make emulsified asphalt force to be demulsified and vaporize the moisture contained by discharge, formed
Not contaminated and destruction water-proof tack coat；
（2）Hot-laid mixture is paved, and the simple grain footpath bituminous concrete moxture thickness paved is 10mm, 170 DEG C of paving material；
With 11 tons of dual-steel wheel road roller immediately following compacting after paving, pressure process uses hydrostatic profile；
（3）When the pavement temperature of compacting is reduced to less than 50 DEG C, you can opening is open to traffic.
Embodiment 2
A kind of simple grain footpath asphalt macadam ultra-thin wearing layer, is made up of following material：
（1）One grade of rational sieve aperture scope is selected between 2 ~ 6mm, 2 ~ 4mm is selected, sieve Time-sharing control is more than maximum particle diameter（Such as
4mm）With less than minimum grain size（Such as 2mm）Particle be less than 5%.
（2）Superelevation adhered modification asphalt material is preferentially selected by the requirement of table 1.
（3）Select Portland cement stand-by, using the cement of 42.5 labels.
（4）The special use miberal powder of optimum selecting asphalt, the content less than 0.075mm is more than 70%, less than 0.6mm's
Content is more than 100%.
（5）In laboratory in following ratio mixing simple grain footpath bituminous concrete moxture：
Single Stone 91.7%, cement 2%, miberal powder 3%, pitch 4%.
（6）The compound mixed hits real 50 shapings marshal pieces by two sides, and then the Listed Items of carry out table 2 are tested
Card.It is verified, determines bitumen aggregate ratio.
（7）Compound is mixed and stirred by the above-mentioned various material proportions finally determined, 185 DEG C of temperature, drop temperature 185 is mixed and stirred
DEG C, the Automobile Transportation that qualified compound covers lagging facility using having paves to front court.
（8）By the high-performance modified emulsified asphalt of requirement optimum selecting of table 3.
A kind of preparation method of simple grain footpath asphalt macadam ultra-thin wearing layer：Spilt using bituminous mixture laying with emulsified asphalt
The integrated Paving Techniques construction that cloth is synchronously carried out, specifically includes following steps：
（1）Using special integrated laying equipment, emulsified asphalt is pre-heated to 80 DEG C, before the horizontal distributing device of paver
The distributing device sprinkling of assembling, spread quantity 0.7kg/m2, make emulsified asphalt force to be demulsified and vaporize the moisture contained by discharge, formed
Not contaminated and destruction water-proof tack coat；
（2）Hot-laid mixture is paved, and the simple grain footpath bituminous concrete moxture thickness paved is 9mm, and paving material answers 180
℃；With 11 tons of dual-steel wheel road roller immediately following compacting after paving, pressure process uses hydrostatic profile；
（3）When the pavement temperature of compacting is reduced to less than 50 DEG C, you can opening is open to traffic.
Embodiment 3
A kind of simple grain footpath asphalt macadam ultra-thin wearing layer, is made up of following material：
（1）One grade of rational sieve aperture scope is selected between 2 ~ 6mm, 3 ~ 6mm is selected, sieve Time-sharing control is more than maximum particle diameter（Such as
6mm）With less than minimum grain size（Such as 3mm）Particle be less than 5%.
（2）Superelevation adhered modification asphalt material is preferentially selected by the requirement of table 1.
（3）Select Portland cement stand-by, using the cement of 32.5 labels.
（4）The special use miberal powder of optimum selecting asphalt, the content less than 0.075mm is more than 70%, less than 0.6mm's
Content is more than 100%.
（5）In laboratory in following ratio mixing simple grain footpath bituminous concrete moxture：
Single Stone 91.7%, cement 2%, miberal powder 3%, pitch 4.1%.
（6）The compound mixed hits real 50 shapings marshal pieces by two sides, and then the Listed Items of carry out table 2 are tested
Card.It is verified, determines bitumen aggregate ratio.
（7）Compound is mixed and stirred by the above-mentioned various material proportions finally determined, 190 DEG C of temperature is mixed and stirred, drop temperature wants 185
DEG C, the Automobile Transportation that qualified compound covers lagging facility using having paves to front court.
（8）By the high-performance modified emulsified asphalt of requirement optimum selecting of table 3.
A kind of preparation method of simple grain footpath asphalt macadam ultra-thin wearing layer：Spilt using bituminous mixture laying with emulsified asphalt
The integrated Paving Techniques construction that cloth is synchronously carried out, specifically includes following steps：
（1）Using special integrated laying equipment, emulsified asphalt is pre-heated to 75 DEG C, before the horizontal distributing device of paver
The distributing device sprinkling of assembling, spread quantity 0.8kg/m2, make emulsified asphalt force to be demulsified and vaporize the moisture contained by discharge, formed
Not contaminated and destruction water-proof tack coat；
（2）Hot-laid mixture is paved, and the simple grain footpath bituminous concrete moxture thickness paved is 12mm, 180 DEG C of paving material；
With 12 tons of dual-steel wheel road roller immediately following compacting after paving, pressure process uses hydrostatic profile；
（3）When the pavement temperature of compacting is reduced to less than 50 DEG C, you can opening is open to traffic.
Claims (6)
1. a kind of simple grain footpath asphalt macadam ultra-thin wearing layer, it is characterised in that：It is made up of following material：
（1）Simple grain footpath bituminous concrete moxture, 8 ~ 12mm of thickness；
（2）Emulsified asphalt bond capacity, every square of 0.6 ~ 0.9Kg of spread quantity.
2. a kind of simple grain footpath asphalt macadam ultra-thin wearing layer according to claim 1, it is characterised in that：（1）Described is mixed
One grade of coarse aggregate of material is closed, particle size range is between 2 ~ 6mm；Compound contains the filler 5 ~ 8% less than 0.075 mm, wherein 2%
It is conventional portland cement, 3 ~ 6% be the levigate miberal powder of lime stone.
3. a kind of simple grain footpath asphalt macadam ultra-thin wearing layer according to claim 1, it is characterised in that：（1）Described is mixed
It is hot-laid mixture to close material, mixes and stirs temperature for 180 ~ 190 DEG C.
4. a kind of simple grain footpath asphalt macadam ultra-thin wearing layer according to claim 1, it is characterised in that：（1）Described breast
Change pitch bond capacity and use superelevation adhered modification pitch, its 60 DEG C of dynamic viscosities are more than 200,000Pa.s, the thickness of asphalt membrane
Reach 12 ~ 15um.
5. a kind of simple grain footpath asphalt macadam ultra-thin wearing layer according to claim 1, it is characterised in that：（2）Described breast
It is high-performance modified emulsified asphalt to change pitch bond capacity.
6. a kind of method of the simple grain footpath asphalt macadam ultra-thin wearing layer prepared described in claim 1, it is characterised in that：Using drip
The integrated Paving Techniques construction of blue or green mixture laying progress synchronous with emulsified asphalt spread, comprises the following steps：
Using special integrated laying equipment, emulsified asphalt is pre-heated to 70 ~ 80 DEG C, before the horizontal distributing device of paver
The distributing device sprinkling of assembling, 0.6 ~ 0.9kg/m of spread quantity2, make emulsified asphalt force to be demulsified and vaporize the moisture contained by discharge,
Form not contaminated and destruction water-proof tack coat；
Hot-laid mixture is paved, and the simple grain footpath bituminous concrete moxture thickness paved is between 8 ~ 12mm, paving material 170
~180℃；With 11 ~ 13 tons of dual-steel wheel road roller immediately following compacting after paving, pressure process uses hydrostatic profile；
When the pavement temperature of compacting is reduced to less than 50 DEG C, you can opening is open to traffic.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221540A (en) * | 2018-02-27 | 2018-06-29 | 广东华起建设工程有限公司 | A kind of extremely thin type asphalt wearing layer structure and its construction method |
| CN111021182A (en) * | 2019-12-05 | 2020-04-17 | 东南大学 | Ultrahigh-viscosity porous anti-slip asphalt drainage surface layer |
| CN114702266A (en) * | 2022-05-17 | 2022-07-05 | 江苏道智公路科学研究院有限公司 | High-rubber asphalt ultrathin wearing layer and construction method thereof |
| CN116444203A (en) * | 2023-04-03 | 2023-07-18 | 武汉工大杰诚工程质量检测有限公司 | Steel slag-based ultrathin wearing layer material for pavement cooling and heat insulation, and preparation method and application thereof |
| CN117569141A (en) * | 2023-10-27 | 2024-02-20 | 保利长大工程有限公司 | Construction process for paving FAC-13 on epoxy asphalt wearing layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108221540A (en) * | 2018-02-27 | 2018-06-29 | 广东华起建设工程有限公司 | A kind of extremely thin type asphalt wearing layer structure and its construction method |
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| CN114702266A (en) * | 2022-05-17 | 2022-07-05 | 江苏道智公路科学研究院有限公司 | High-rubber asphalt ultrathin wearing layer and construction method thereof |
| CN116444203A (en) * | 2023-04-03 | 2023-07-18 | 武汉工大杰诚工程质量检测有限公司 | Steel slag-based ultrathin wearing layer material for pavement cooling and heat insulation, and preparation method and application thereof |
| CN116444203B (en) * | 2023-04-03 | 2023-11-17 | 武汉工大杰诚工程质量检测有限公司 | Steel slag-based ultrathin wearing layer material for pavement cooling and heat insulation, and preparation method and application thereof |
| CN117569141A (en) * | 2023-10-27 | 2024-02-20 | 保利长大工程有限公司 | Construction process for paving FAC-13 on epoxy asphalt wearing layer |
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