CN105803883A - Construction technology of pavement made from hot-mix asphalt mixture and large-grain-size crushed stone - Google Patents
Construction technology of pavement made from hot-mix asphalt mixture and large-grain-size crushed stone Download PDFInfo
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- CN105803883A CN105803883A CN201610144776.XA CN201610144776A CN105803883A CN 105803883 A CN105803883 A CN 105803883A CN 201610144776 A CN201610144776 A CN 201610144776A CN 105803883 A CN105803883 A CN 105803883A
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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
- E01C7/32—Coherent pavings made in situ made of road-metal and binders of courses of different kind made in situ
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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
- E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
- E01C7/22—Binder incorporated in hot state, e.g. heated bitumen
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
- Road Paving Machines (AREA)
Abstract
The invention provides a construction technology of a pavement made from a hot-mix asphalt mixture and large-grain-size crushed stone.Crushed stone playing a supporting role is sprayed to a lower bearing layer in a bonding mode through a layer spreading method, then the hot-mix asphalt mixture is spread on the sprayed crushed stone, rolling and curing molding are performed, and the bituminous pavement is obtained.The technology comprises the following steps that firstly, a first layer of asphalt and crushed stone are sprayed, wherein the grain size D of the crushed stone is larger than Dmax-5 mm and smaller than or equal to Dmax; secondly, the crushed stone is trimmed and stably pressed; thirdly, a second layer of asphalt is sprayed after the crushed stone is stably pressed; fourthly, the hot-mix asphalt mixture is mixed; fifthly, the hot-mix asphalt mixture is conveyed; sixthly, the hot-mix asphalt mixture is sprayed; seventhly, the hot-mix asphalt mixture is rolled; eighthly, curing and traffic opening are performed.According to the construction technology, the problem that ruts are likely to be produced on a bituminous pavement is solved, the adopted technology is low in difficulty, the manufacturing cost is low, and the application range is wide.
Description
Technical field
The present invention relates to road construction and maintenance technology field, especially relate to a kind of hot-mix asphalt mixture uniform thickness Stone construction Craft.
Background technology
Highway and urban road that China is built are mostly bituminous paving.Impact due to factors such as the serious overload and oversize of vehicle, heavy traffic, canalization driving and hot weathers, cause that rut has become bituminous paving early stage topmost disease, such as highway climbing section, BRT(public transport fast transportation) special lane and guiding road etc. be that rut the most easily occurs and the most serious part, data shows that rut in various degree occurs in the bituminous paving of 80%, it is the persistent ailment in road disease, can not get solving always.
At present, typical asphalt pavement structure is divided into three kinds: suspension compact-type structure, skeleton air gap type structure, dense structure of skeleton.Wherein suspension compact-type structure anti-rut behavior is worst, and skeleton air gap type structure durability is poor, and dense structure of skeleton anti-rut behavior is the strongest.In order to improve the anti-rut behavior of bituminous paving, mainly put forth effort on two aspects: one is to ensure that coarse aggregate forms skeleton；Two is adopt, by modified pitch, the cementitious matter that softening point is higher.Asphalt-mastic-broken stone macadam pavement road surface thus, theoretically, it can form skeleton, its anti-rut behavior is very strong, it is a kind of desirably pavement structure, construction needs strict control, but owing to theoretical and laboratory test there are differences with engineering practice, different batches material there are differences, Construction control precision is relatively low, capability of engineering equipment is unstable, cementitious matter softening point is relatively low and the impact of material segregation etc. factor, cause the anti-rut behavior relative deficiency of asphalt mastic stone pavements, the fact is that asphalt mastic stone pavements also there will be rut often.Therefore, will making qualified asphalt-mastic-broken stone macadam pavement technical difficulty significantly high, in fact typical asphalt pavement structure is all easily generated rut.
At present, the construction technology of bituminous paving mainly divides two classes: one is layer spread method, two is mixing method.Layer spread method is also penetration method, and it is that layering is spilt (spreading) cloth Colophonium (including various Colophonium) and gathers materials, during Colophonium injection is gathered materials, and the then construction method of roller-compaction.Mixing method be Colophonium with all gather materials mix and stir together with, the then construction method of decking and rolling molding.
Summary of the invention
It is an object of the invention to provide a kind of hot-mix asphalt mixture uniform thickness Stone construction Craft, solve the problem that bituminous paving is easily generated rut.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of hot-mix asphalt mixture uniform thickness Stone construction Craft, it is characterized in that, first with layer spread method, the crushed stone spreading playing main supporting role is bonded on sub-layer, then the hot-mix asphalt mixture mixed and stirred that paves on rubble is being dispensed, then through rolling, health preserving molding is bituminous paving, comprises the following steps:
The first step, spread ground floor Colophonium and spreading rubble:
1) spread ground floor Colophonium and dispensing before rubble, installs to Colophonium and rubble on chip sealer, and by design quantity, chip sealer is demarcated；Uniform thickness Stone refers to that the maximum ballast grain sizes Dmax of spreading is the same with road surface thickness H, i.e. Dmax=H, forbidding have super Stone to exist, ballast grain sizes D used by engineering practice ranges for: (Dmax-5mm) < D≤Dmax；The clear spacing dispensed between rubble is 3cm～4cm；
2) chip sealer is reached job site, carry out spread ground floor hot asphalt according to setting-out and dispense rubble；
Second step, finishing and voltage stabilizing rubble:
1), after crushed stone spreading, flat rake and human assistance leveling can be drawn, it is desirable to the effect reached is: rubble is evenly distributed, surface overall leveling；
2) after rubble finishing, roll with pneumatic-tired rollers, make rubble stable；
3rd step, spread second layer Colophonium: spread second layer Colophonium after rubble voltage stabilizing；
4th step, hot-mix asphalt mixture mix and stir:
Hot-mix asphalt mixture mix-design is carried out, according to design mixture proportion gathering materials and Colophonium uniform mixing by the requirement of current specifications；Hot-mix asphalt mixture adopts AC-10 type, and maximum ballast grain sizes is not more than 10mm；
5th step, hot-mix asphalt mixture transport: hot-mix asphalt mixture is transported to job site, pours hopper of paver into；
6th step, hot-mix asphalt mixture pave:
Before paving, completely with hot-mix asphalt mixture making Experiment Road, it is determined that test loose laying depth；Loose laying depth when paving 3mm bigger than test loose laying depth, it is ensured that hot-mix asphalt mixture can be compacted；
7th step, hot-mix asphalt mixture roll:
Before large-area construction, by the first step～the 7th step making Experiment Road, it is determined that RCC double-curvature arch dam, the mechanical combination mode determined by Experiment Road rolls；
8th step, health preserving/open to traffic:
Health preserving refers to that after rolling end, pavement temperature is cooled to the process being not more than 50 DEG C, and health preserving terminates just can open to traffic.
Further, the hot-mix asphalt mixture described in the 4th step～the 7th step can also adopt AC-5 type.
The invention have the benefit that
1, anti-rut behavior of the present invention is strong, in the hot-mix asphalt mixture uniform thickness Stone road surface that the present invention does, dispenses maximum ballast grain sizes consistent with road surface thickness, plays main supporting role, is the main undertaker and the transmitter of load, and it does not have rut.
2, the technology of the present invention difficulty is low, and the control that the construction technology of the present invention does not want refinement thin just can form powerful skeleton, and technical difficulty is compared asphalt mastic stone pavements and reduced a lot.
3, cost of the present invention is low, and the cementitious matter of the present invention is required for that SBS modifier is modified is to ensure that high-temperature stability, it is possible to reduce material construction；It addition, total bitumen aggregate ratio (whole asphalt qualities and the ratio of whole aggregate qualities) reduces more, economic benefit is obvious.
4, purposes of the present invention is wide, the present invention can be used for new pavement, the maintenance on built road surface, deck paving, can also be used for maintenance rut etc., it is particularly well-suited to highway climbing section, BRT special lane and guiding road, and deeper rut part the most easily occurs for middle level in multilamellar bituminous paving or lower floor etc..
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described, but protection scope of the present invention is not limited to this.
Embodiment 1
The present embodiment condition: doing 6cm thickness hot-mix asphalt mixture uniform thickness Stone road surface, ground floor Colophonium and second layer Colophonium all adopt heated bitumen, and its consumption is 0.4kg/m2；Spreading ballast grain sizes is 60mm～55mm, and consumption is 41m3/1000m2；Hot-mix asphalt mixture adopts AC-10 type；Test loose laying depth is 6.5cm；RCC double-curvature arch dam mode is: 1 time+16t double-steel wheeled vibratory roller of 16t double-steel wheeled vibratory roller static pressure shakes and presses 3 times+26t pneumatic-tired rollers to roll twice.
The hot-mix asphalt mixture uniform thickness Stone construction Craft of the present invention, comprises the following steps:
The first step, spread ground floor Colophonium and spreading rubble:
1) heated bitumen and rubble are installed on chip sealer, and press design quantity and Colophonium 0.4kg/m2, rubble consumption be 41m3/1000m2, chip sealer is demarcated；
2) spilling, truck spreader reaches job site, carries out spread ground floor Colophonium according to setting-out and dispenses rubble；
Second step, finishing and voltage stabilizing rubble:
1), after crushed stone spreading, flat rake and human assistance leveling can be drawn, it is desirable to the effect reached is: rubble is evenly distributed, surface overall leveling, and the clear spacing dispensed between rubble is 3cm～4cm, to separate for intensive rubble, and super particle diameter person to detect；
2) after rubble finishing, roll with pneumatic-tired rollers, make rubble stable；
3rd step, spread second layer Colophonium:
After rubble voltage stabilizing can spread second layer Colophonium, consumption is 0.4kg/m2；
4th step, hot-mix asphalt mixture mix and stir:
Carry out AC-10 type hot-mix asphalt mixture by the design mixture proportion of the requirement of current specifications and asphalt to mix and stir；
5th step, hot-mix asphalt mixture transport:
By the requirement of current specifications, hot-mix asphalt mixture is transported to job site, pour hopper of paver into；
6th step, hot-mix asphalt mixture pave:
Carry out paving hot-mix asphalt mixture on the rubble dispensed by the requirement of current specifications, loose laying depth when paving is 6.8cm (6.5cm+3mm), ensure that hot-mix asphalt mixture can be compacted, will not cause that the hot-mix asphalt mixture in rubble gap can not be compacted because uniform thickness Stone supports road roller wheel；
7th step, hot-mix asphalt mixture roll:
The RCC double-curvature arch dam mode determined by the requirement of current specifications and making Experiment Road rolls, and namely 1 time+16t double-steel wheeled vibratory roller of 16t double-steel wheeled vibratory roller static pressure shakes and presses 3 times+26t pneumatic-tired rollers to roll twice；
8th step, health preserving/open to traffic:
Health preserving refers to the process that road surface lowers the temperature, just can open to traffic when pavement temperature is cooled to and is not more than 50 DEG C.
Embodiment 2
The present embodiment condition: do 8cm thickness hot-mix asphalt mixture uniform thickness Stone road surface.Ground floor Colophonium and second layer Colophonium all adopt heated bitumen, and its consumption is 0.5kg/m2；Spreading ballast grain sizes is 80mm～75mm, and consumption is 52m3/1000m2；Hot-mix asphalt mixture adopts AC-10 type；Test loose laying depth is 8.6cm；RCC double-curvature arch dam mode is: 1 time+16t double-steel wheeled vibratory roller of 16t double-steel wheeled vibratory roller static pressure shakes and presses 4 times+26t pneumatic-tired rollers to roll twice.
The hot-mix asphalt mixture uniform thickness Stone construction Craft of the present invention, comprises the following steps:
The first step, spread ground floor Colophonium and spreading rubble:
1) heated bitumen and rubble are installed on chip sealer, and press design quantity and Colophonium 0.5kg/m2, rubble consumption be 52m3/1000m2, chip sealer is demarcated；
2) spilling, truck spreader reaches job site, carries out spilling, dispensing according to setting-out；
Second step, finishing and voltage stabilizing rubble:
1), after crushed stone spreading, flat rake and human assistance leveling can be drawn, it is desirable to the effect reached is: rubble is evenly distributed, surface overall leveling, and the clear spacing dispensed between rubble is 3cm～4cm, to separate for intensive rubble, and super particle diameter person to detect；
2) after rubble finishing, roll with pneumatic-tired rollers, make rubble stable；
3rd step, spread second layer Colophonium:
After rubble voltage stabilizing can spread second layer Colophonium, consumption is 0.5kg/m2；
4th step, hot-mix asphalt mixture mix and stir:
Carry out AC-10 type hot-mix asphalt mixture by the design mixture proportion of the requirement of current specifications and asphalt to mix and stir；
5th step, hot-mix asphalt mixture transport:
By the requirement of current specifications, hot-mix asphalt mixture is transported to job site, pour hopper of paver into；
6th step, hot-mix asphalt mixture pave:
Paving on the rubble dispensed by the requirement of current specifications, loose laying depth when paving is 8.9cm (8.6cm+3mm)；
7th step, hot-mix asphalt mixture roll:
The RCC double-curvature arch dam mode determined by the requirement of current specifications and making Experiment Road rolls, and namely 1 time+16t double-steel wheeled vibratory roller of 16t double-steel wheeled vibratory roller static pressure shakes and presses 4 times+26t pneumatic-tired rollers to roll twice；
8th step, health preserving/open to traffic:
Health preserving refers to the process that road surface lowers the temperature, just can open to traffic when pavement temperature is cooled to and is not more than 50 DEG C.
Embodiment 3
The present embodiment condition: do 4cm thickness hot-mix asphalt mixture uniform thickness Stone road surface.Ground floor Colophonium and second layer Colophonium all adopt heated bitumen, and its consumption is 0.4kg/m2；Spreading ballast grain sizes is 40mm～35mm, and consumption is 24m3/1000m2；Hot-mix asphalt mixture adopts AC-5 type；Test loose laying depth is 4.5cm；RCC double-curvature arch dam mode is: 1 time+16t double-steel wheeled vibratory roller of 16t double-steel wheeled vibratory roller static pressure shakes and presses 4 times+26t pneumatic-tired rollers to roll twice.
The hot-mix asphalt mixture uniform thickness Stone construction Craft of the present invention, comprises the following steps:
The first step, spread ground floor Colophonium and spreading rubble:
1) heated bitumen and rubble are installed on chip sealer, and press design quantity and Colophonium 0.4kg/m2, rubble consumption be 24m3/1000m2, chip sealer is demarcated；
2) spilling, truck spreader reaches job site, carries out spilling, dispensing according to setting-out；
Second step, finishing and voltage stabilizing rubble:
1), after crushed stone spreading, flat rake and human assistance leveling can be drawn, it is desirable to the effect reached is: rubble is evenly distributed, surface overall leveling, and the clear spacing dispensed between rubble is 3cm～4cm, to separate for intensive rubble, and super particle diameter person to detect；
2) after rubble finishing, roll with pneumatic-tired rollers, make rubble stable；
3rd step, spread second layer Colophonium:
After rubble voltage stabilizing can spread second layer Colophonium, consumption is 0.4kg/m2；
4th step, hot-mix asphalt mixture mix and stir:
Carry out AC-5 type hot-mix asphalt mixture by the design mixture proportion of the requirement of current specifications and asphalt to mix and stir；
5th step, hot-mix asphalt mixture transport:
By the requirement of current specifications, hot-mix asphalt mixture is transported to job site, pour hopper of paver into；
6th step, hot-mix asphalt mixture pave:
Paving on the rubble dispensed by the requirement of current specifications, loose laying depth when paving is 4.8cm (4.5cm+3mm)；
7th step, hot-mix asphalt mixture roll:
The RCC double-curvature arch dam mode determined by the requirement of current specifications and making Experiment Road rolls, and namely 1 time+16t double-steel wheeled vibratory roller of 16t double-steel wheeled vibratory roller static pressure shakes and presses 4 times+26t pneumatic-tired rollers to roll twice；
8th step, health preserving/open to traffic:
Health preserving refers to the process that road surface lowers the temperature, just can open to traffic when pavement temperature is cooled to and is not more than 50 DEG C.
To illustrate that, above-described embodiment is illustrative not limiting to technical solution of the present invention, the equivalent replacement of art those of ordinary skill or other amendment made according to prior art, as long as not beyond the thinking of technical solution of the present invention and scope, should be included within interest field of the presently claimed invention.
Claims (2)
1. a hot-mix asphalt mixture uniform thickness Stone construction Craft, it is characterized in that, first with layer spread method, the crushed stone spreading playing main supporting role is bonded on sub-layer, then the hot-mix asphalt mixture mixed and stirred that paves on rubble is being dispensed, then through rolling, health preserving molding is bituminous paving, comprises the following steps:
The first step, spread ground floor Colophonium and spreading rubble:
1) spread ground floor Colophonium and dispensing before rubble, installs to Colophonium and rubble on chip sealer, and by design quantity, chip sealer is demarcated；Uniform thickness Stone refers to that the maximum ballast grain sizes Dmax of spreading is the same with road surface thickness H, i.e. Dmax=H, forbidding have super Stone to exist, ballast grain sizes D used by engineering practice ranges for: (Dmax-5mm) < D≤Dmax；The clear spacing dispensed between rubble is 3cm～4cm；
2) chip sealer is reached job site, carry out spread ground floor hot asphalt according to setting-out and dispense rubble；
Second step, finishing and voltage stabilizing rubble:
1), after crushed stone spreading, flat rake and human assistance leveling can be drawn, it is desirable to the effect reached is: rubble is evenly distributed, surface overall leveling；
2) after rubble finishing, roll with pneumatic-tired rollers, make rubble stable；
3rd step, spread second layer Colophonium:
Spread second layer Colophonium after rubble voltage stabilizing；
4th step, hot-mix asphalt mixture mix and stir:
Hot-mix asphalt mixture mix-design is carried out, according to design mixture proportion gathering materials and Colophonium uniform mixing by the requirement of current specifications；Hot-mix asphalt mixture adopts AC-10 type, and maximum ballast grain sizes is not more than 10mm；
5th step, hot-mix asphalt mixture transport:
Hot-mix asphalt mixture is transported to job site, pours hopper of paver into；
6th step, hot-mix asphalt mixture pave:
Before paving, completely with hot-mix asphalt mixture making Experiment Road, it is determined that test loose laying depth；Loose laying depth when paving 3mm bigger than test loose laying depth, it is ensured that hot-mix asphalt mixture can be compacted；
7th step, hot-mix asphalt mixture roll:
Before large-area construction, by the first step～the 7th step making Experiment Road, it is determined that RCC double-curvature arch dam, the mechanical combination mode determined by Experiment Road rolls；
8th step, health preserving/open to traffic:
Health preserving refers to that after rolling end, pavement temperature is cooled to the process being not more than 50 DEG C, and health preserving terminates just can open to traffic.
2. a kind of hot-mix asphalt mixture uniform thickness Stone construction Craft according to claim 1, it is characterised in that the hot-mix asphalt mixture described in the 4th step～the 7th step can also adopt AC-5 type.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668315A (en) * | 2021-08-31 | 2021-11-19 | 吴彬 | Asphalt highway construction method |
| CN115806409A (en) * | 2022-12-19 | 2023-03-17 | 河南光大路建工程管理有限公司 | Asphalt-rich framework type pavement and construction process |
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| JP2816875B2 (en) * | 1989-10-06 | 1998-10-27 | 吉野理化工業株式会社 | Improvement method of existing artificial stone surface |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113668315A (en) * | 2021-08-31 | 2021-11-19 | 吴彬 | Asphalt highway construction method |
| CN115806409A (en) * | 2022-12-19 | 2023-03-17 | 河南光大路建工程管理有限公司 | Asphalt-rich framework type pavement and construction process |
| CN115806409B (en) * | 2022-12-19 | 2024-06-07 | 河南光大路建工程管理有限公司 | Asphalt-rich skeleton type pavement and construction process |
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