CN102493307A - Water-logging-resistant pavement structure and construction method thereof - Google Patents
Water-logging-resistant pavement structure and construction method thereof Download PDFInfo
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- CN102493307A CN102493307A CN2011104036210A CN201110403621A CN102493307A CN 102493307 A CN102493307 A CN 102493307A CN 2011104036210 A CN2011104036210 A CN 2011104036210A CN 201110403621 A CN201110403621 A CN 201110403621A CN 102493307 A CN102493307 A CN 102493307A
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Abstract
The invention relates to a water-logging-resistant pavement structure which comprises a surface layer, a base course and a road bed, wherein the base course is paved between the surface layer and the road bed; the base course respectively comprises two framework compact type water-logging-resistant layers with the thickness of 18cm and one suspension type water-logging-resistant layer with the thickness of 18cm from top to bottom; and the framework compact type water-logging-resistant layers comprise the components of lime, fly ash and gravel in the weight part ratio of 8:12:80, and the suspension type water-logging-resistant layer comprises the components of lime, fly ash and gravel in the weight part ratio of 10:45:45. The water-logging-resistant pavement structure disclosed by the invention has the advantages that a construction method is simple and feasible; a pavement structure is scientific and reasonable in design, lower in cost and strong in crack resistance; the bearing capacity of the road is effectively improved; the service life of the road is prolonged; and the maintenance and repair cost of the road is reduced.
Description
Technical field
The invention belongs to the road structure field, especially a kind of anti-water logging road structure and job practices thereof.
Background technology
At present; Surrounding area, strand, the Tianjin general road structure of town road mainly is on roadbed, to do 5% thick cement stabilized macadam layer of the two-layer 18cm of being and the thick lime fly ash macadam of one deck 18cm; In general road structure, because the groundwater table of Tianjin coastal region is high, 5% cement stabilized macadam layer is prone to produce the crack; Meet and impairedly behind the water intrusion seriously to be prone to loosely, reduced the bearing capacity and the application life of road, the maintenance that has increased road and maintenance cost.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; A kind of anti-water logging road structure is provided; This road structure design science is reasonable, cost is lower, cracking resistance by force, has effectively improved road bearing capacity and application life, has reduced the maintenance and the maintenance cost of road.
Another object of the present invention is to provide a kind of job practices of anti-water logging road structure.
The present invention solves its technical problem and realizes through following technical scheme:
A kind of anti-water logging road structure; Comprise surface layer, basic unit and roadbed; Basic unit is laid between surface layer and the roadbed; Its basic unit comprises respectively that from top to bottom two layers of thickness is the anti-water logging layer of framework compact type of 18cm and the anti-water logging layer of floating type that a layer thickness is 18cm, and wherein the component of the anti-water logging layer of framework compact type and ratio of weight and number thereof are: lime: flyash: rubble=8: 12: 80; The component and the ratio of weight and number thereof of the anti-water logging layer of floating type are: lime: flyash: rubble=10: 45: 45.
And described surface layer is a bitumen layer.
A kind of job practices of anti-water logging road structure, the step that its method comprises is:
(1), sprinkle water moistening to the roadbed of acceptance(check);
(2), carry out batch mixing according to the anti-water logging layer of floating type weight proportion;
(3), select from shaking paver and hammer ram paves;
(4), paver control absolute altitude set spacing is no more than 10m, will carry out repetition measurement after reference line draws simultaneously;
(5), the anti-water logging layer of the floating type that paves batch mixing, a width of cloth road surface length is controlled at 100m;
(6), shake voltage stabilizing, and then vibrations roll, and press with pneumatic-tired rollers are gentle again with road roller; Receive face with smooth-wheeled roller at last, eliminate wheelmark, the anti-water logging laminar surface of floating type keeps moistening in the process of rolling; After the real thickness of the anti-water logging lamination of floating type reached 18cm, this layer making accomplished, the anti-water logging layer of beginning making framework compact type; Repeating step (2)-(6) until the anti-water logging layer of two-layer framework compact type making accomplished, cover one deck geotextiles on it covering the fluid-tight plastic sheeting of one deck on the anti-water logging layer of the framework compact type of the superiors earlier again; And watering, curing time, be not less than 30 days;
(7), after basic unit's cured, the making surface layer, the construction of anti-water logging road structure finishes.
Advantage of the present invention and beneficial effect are:
1, this anti-water logging road structure comprises surface layer, basic unit and roadbed; Basic unit is laid between surface layer and the roadbed; Its basic unit comprises respectively that from top to bottom two layers of thickness is the anti-water logging layer of framework compact type of 18cm and the anti-water logging layer of floating type that a layer thickness is 18cm, and wherein the component of the anti-water logging layer of framework compact type and ratio of weight and number thereof are: lime: flyash: rubble=8: 12: 80; The component and the ratio of weight and number thereof of the anti-water logging layer of floating type are: lime: flyash: rubble=10: 45: 45; This kind structure road surface has anti-preferably water logging characteristic; Effectively improve road bearing capacity and application life, reduced the maintenance and the maintenance cost of road.
2, job practices of the present invention is simple, and road structure design science is reasonable, cost is lower, cracking resistance by force, has effectively improved road bearing capacity and application life, has reduced the maintenance and the maintenance cost of road.
Description of drawings
Fig. 1 is the structural representation of road structure of the present invention.
The specific embodiment
Through specific embodiment the present invention is made further detailed description below, following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of anti-water logging road structure; Comprise surface layer 1, basic unit and roadbed 5; Surface layer is a bitumen layer; Basic unit is laid between surface layer and the roadbed, and its basic unit comprises respectively that from top to bottom two layers of thickness is the anti-water logging layer 2,3 of framework compact type of 18cm and the anti-water logging layer 4 of floating type that a layer thickness is 18cm, and wherein the component of the anti-water logging layer of framework compact type and ratio of weight and number thereof are: lime: flyash: rubble=8: 12: 80; The component and the ratio of weight and number thereof of the anti-water logging layer of floating type are: lime: flyash: rubble=10: 45: 45.
A kind of job practices of anti-water logging road structure, the step that its method comprises is:
(1), sprinkle water moistening to the roadbed of acceptance(check);
(2), carry out batch mixing according to the anti-water logging layer of floating type weight proportion; Before formally mixing the system compound, debug plant mix equipment; The assurance batching metering is accurate, makes grading of aggregate, dust burdening, the water content of compound all reach the requirement of match ratio, mixes and stirs the finished product material and wants solid colour even; The water content control of compound is looked haul distance length climate change scenario and is taken the circumstances into consideration the 1-2% greater than specified moisture content, and sampling is in time done the water content detection and made the unconfined compression strength test specimen;
(3), select from shaking paver and hammer ram paves, with the raising coefficient of consolidation that paves, reduce to roll and pass and cause planeness to reduce;
(4), the paver reference line must strain, paver control absolute altitude set spacing is no more than 10m, will carry out repetition measurement after reference line draws simultaneously; The paver slope in length and breadth that mixes up in place, the good chock of screed pad paves, and the speed of paving should adapt with lorry mounted mixer output as far as possible and evenly go, and reduces and shuts down number of times, and paving its section length at twice like a width of cloth should not be long;
(5), the anti-water logging layer of the floating type that paves batch mixing, a width of cloth road surface length is controlled at 100m; Establish the special messenger behind the paver and check that handling the mixture segregation corner lacks the material phenomenon.In time carry out degree of compaction and detect, defectively in time carry out ftercompction
(6), shake voltage stabilizing, and then vibrations roll, and press with pneumatic-tired rollers are gentle again with road roller; Receive face with smooth-wheeled roller at last, eliminate wheelmark, the anti-water logging laminar surface of floating type keeps moistening in the process of rolling; After the real thickness of the anti-water logging lamination of floating type reached 18cm, this layer making accomplished, the anti-water logging layer of beginning making framework compact type; Repeating step (2)-(6) until the anti-water logging layer of two-layer framework compact type making accomplished, cover one deck geotextiles on it covering the fluid-tight plastic sheeting of one deck on the anti-water logging layer of the framework compact type of the superiors earlier again; And watering, curing time, be not less than 30 days;
(7), after basic unit's cured, the making surface layer, the construction of anti-water logging road structure finishes.
Material of the present invention is prepared: lime adopts the above quicklime of II level, clears up the back and crosses the 10mm sieve, and water content is moderate; Flyash AI2O3, SiO2 and Fe2O3 total content are greater than 70%, and loss on ignition is no more than 20%, and specific area is greater than 2500m2/g, and water content is moderate; Rubble is a limestone, and adopting four kinds of specifications is 0-5mm, 5-10mm, 10-20mm, 20-30mm, rubble crush values≤30%.Machinery is prepared: be equipped with one of blending station with 6 charging apertures, adopt the plant mixing method construction, compound adopts dump truck transportation, paver making, road roller grinding compacting.Personnel prepare: job site technician, administrative staff and operating personnel need 10～15 people.
Claims (3)
1. anti-water logging road structure; Comprise surface layer, basic unit and roadbed; Basic unit is laid between surface layer and the roadbed; It is characterized in that: this basic unit comprises respectively that from top to bottom two layers of thickness is the anti-water logging layer of framework compact type of 18cm and the anti-water logging layer of floating type that a layer thickness is 18cm, and wherein the component of the anti-water logging layer of framework compact type and ratio of weight and number thereof are: lime: flyash: rubble=8: 12: 80; The component and the ratio of weight and number thereof of the anti-water logging layer of floating type are: lime: flyash: rubble=10: 45: 45.
2. anti-water logging road structure according to claim 1 is characterized in that: described surface layer is a bitumen layer.
3. the job practices of an anti-water logging road structure as claimed in claim 1, it is characterized in that: the step that this method comprises is:
(1), sprinkle water moistening to the roadbed of acceptance(check);
(2), carry out batch mixing according to the anti-water logging layer of floating type weight proportion;
(3), select from shaking paver and hammer ram paves;
(4), paver control absolute altitude set spacing is no more than 10m, will carry out repetition measurement after reference line draws simultaneously;
(5), the anti-water logging layer of the floating type that paves batch mixing, a width of cloth road surface length is controlled at 100m;
(6), shake voltage stabilizing, and then vibrations roll, and press with pneumatic-tired rollers are gentle again with road roller; Receive face with smooth-wheeled roller at last, eliminate wheelmark, the anti-water logging laminar surface of floating type keeps moistening in the process of rolling; After the real thickness of the anti-water logging lamination of floating type reached 18cm, this layer making accomplished, the anti-water logging layer of beginning making framework compact type; Repeating step (2)-(6) until the anti-water logging layer of two-layer framework compact type making accomplished, cover one deck geotextiles on it covering the fluid-tight plastic sheeting of one deck on the anti-water logging layer of the framework compact type of the superiors earlier again; And watering, curing time, be not less than 30 days;
(7), after basic unit's cured, the making surface layer, the construction of anti-water logging road structure finishes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104036210A CN102493307A (en) | 2011-12-07 | 2011-12-07 | Water-logging-resistant pavement structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104036210A CN102493307A (en) | 2011-12-07 | 2011-12-07 | Water-logging-resistant pavement structure and construction method thereof |
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| CN102493307A true CN102493307A (en) | 2012-06-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087639A (en) * | 2016-08-15 | 2016-11-09 | 长江勘测规划设计研究有限责任公司 | A kind of highway, Irish bridge structure and Irish bridge construction method |
| CN109750574A (en) * | 2019-03-12 | 2019-05-14 | 中铁北京工程局集团有限公司 | A kind of base material bilayer company paving construction technology |
Citations (2)
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|---|---|---|---|---|
| CN201738210U (en) * | 2010-03-16 | 2011-02-09 | 长安大学 | Economic and durable type bituminous pavement inverted structure |
| FR2922205B1 (en) * | 2007-10-12 | 2011-06-17 | Lafarge Sa | FORMULATION, USE AND METHOD FOR OBTAINING STRUCTURAL LIGHT CONCRETE. |
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2011
- 2011-12-07 CN CN2011104036210A patent/CN102493307A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2922205B1 (en) * | 2007-10-12 | 2011-06-17 | Lafarge Sa | FORMULATION, USE AND METHOD FOR OBTAINING STRUCTURAL LIGHT CONCRETE. |
| CN201738210U (en) * | 2010-03-16 | 2011-02-09 | 长安大学 | Economic and durable type bituminous pavement inverted structure |
Non-Patent Citations (3)
| Title |
|---|
| 王寅弘: "天津滨海新区西部新城起步区道路路面结构形式探讨", 《城市道桥与防洪》, no. 05, 15 May 2009 (2009-05-15), pages 28 - 30 * |
| 陈瑾: "高速公路路面二灰碎石基层施工工艺", 《科学中国人》, no. 11, 30 November 2005 (2005-11-30), pages 60 - 61 * |
| 龚凤刚等: "天津滨海新区产业功能区典型路面结构设计研究", 《城市道桥与防洪》, no. 01, 31 January 2010 (2010-01-31), pages 111 - 115 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087639A (en) * | 2016-08-15 | 2016-11-09 | 长江勘测规划设计研究有限责任公司 | A kind of highway, Irish bridge structure and Irish bridge construction method |
| CN109750574A (en) * | 2019-03-12 | 2019-05-14 | 中铁北京工程局集团有限公司 | A kind of base material bilayer company paving construction technology |
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Application publication date: 20120613 |