CN200952106Y - Express way utilizing powder coal ash on roadbed - Google Patents
Express way utilizing powder coal ash on roadbed Download PDFInfo
- Publication number
- CN200952106Y CN200952106Y CN 200620137620 CN200620137620U CN200952106Y CN 200952106 Y CN200952106 Y CN 200952106Y CN 200620137620 CN200620137620 CN 200620137620 CN 200620137620 U CN200620137620 U CN 200620137620U CN 200952106 Y CN200952106 Y CN 200952106Y
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- layer
- roadbed
- fly ash
- speedway
- sandy loam
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Abstract
The utility model relates to a freeway using fly ash road base, which comprises a stone column, a stone liner layer, a reinforcement rib layer, a fly ash layer, and a sandy loam coverage layer. The stone column is embedded in the foundation in a certain camber, and paved thereon with the stone liner layer, the reinforcement rib layer, the fly ash layer and sandy loam coverage layer from the bottom to the top. The stone liner layer has a camber. The reinforcement rib layer is provided inside with two layers of geotechnical fabrics. The fly ash layer is rolled to form a compact density fly ash layer with the desired density. The sandy loam coverage layer serves as a seal roof to form a sandy folded-edge shell. The utility model utilizes fly ash to construct road to reduce the environmental pollution and reduce the occupancy of farmland. With the use of fly ash in road base, road surface substrate and foundation, the quality of road construction is improved and the cost is reduced. The utility model can meet the technical requirements of construction of roads of different classes, and has good social and economic benefits.
Description
Technical field
The utility model relates to the highway subgrade structure, is specifically related to a kind of express highway roadbed structure that makes full use of flyash.Belong to International Classification of Patents E01C3/00 " road bed " technical field.
Background technology
Along with development and national economy, the traffic volume increases very fast, and the highway construction of China Higher level had started climax in recent years.The phenomenon that a large amount of embankments of embankment are striven ground with soil and agricultural is increasing.And flyash is the discharged waste of steam power plant, it is the powdery lime-ash that the steam power station combusting coal fines produces, its main component is silica (SiO2) and alundum (Al (Al2O3), total content often surpasses 70%, calcium oxide (CaO) content claims usually that generally 2%～6% this flyash is the aluminum silicon powder coal ash.Discharging for many years and old ash overstock, and make it to have occupied the farmland, have polluted environment, suddenly wait to develop and use.According to the late nineteen eighties statistics, the discharge value of the annual flyash of China is just more than 40,000,000 tons, and utilization rate is but very low.
Summary of the invention
The purpose of this utility model is fully to develop the effect of trade waste flyash aspect the roadbed filling, turns waste into wealth, and reduces and takes up an area of and environment pollution, and a kind of speedway of roadbed powder application coal ash promptly is provided.
The purpose of this utility model is achieved through the following technical solutions.
A kind of speedway of roadbed powder application coal ash comprises broken stone pile, hardcore bed, reinforcement layer, fine coal grieshoch and sandy loam covering layer.Base portion is inserted broken stone pile and is had certain camber, and Ceng order is followed successively by from the bottom to top: hardcore bed, reinforcement layer, fine coal grieshoch, sandy loam covering layer.Hardcore bed can be rubble and adds sand cushion, has identical camber according to original hase.Add two-layer geotextile in the reinforcement layer, every layer thickness is 20-40cm.The fine coal grieshoch is the real density fine coal grieshoch that rolls to the desired density requirement, thickness 20-40cm.The layer that binds of this speedway is the sandy loam covering layer, and thickness 30-60cm, side slope width are the bound edge of horizontal direction 1-2m, form soil property bound edge shell.
The utility model utilizes flyash to build highway, and turns waste into wealth, and has both reduced environment pollution, can reduce taking the farmland again.Utilize that flyash is constructing roadbed, ground subsoil layer and basic unit, also can improve the highway construction quality, reduce cost, can satisfy the technical requirements of different brackets highway.Have bigger social benefit and economic benefit, benefit the nation and the people.
Description of drawings
Accompanying drawing is the structural representation of the utility model speedway.
Among the figure: 1, broken stone pile, 2, hardcore bed, 3, the reinforcement layer, 4, the fine coal grieshoch, 5, the sandy loam covering layer.
The specific embodiment
As shown in drawings, the speedway of roadbed powder application coal ash comprises broken stone pile 1, hardcore bed 2, reinforcement layer 3, fine coal grieshoch 4 and sandy loam covering layer 5.Base portion is inserted broken stone pile 1 and the certain camber of tool, is followed successively by by the order on lower floor to upper strata: hardcore bed 2, reinforcement layer 3, fine coal grieshoch 4 and sandy loam covering layer 5.
During construction, at first, take corresponding design measure, the construction control standard is claimed according to intending filling roadbed height and former ground earthy water literary composition condition.In the embankment design, take measures to get rid of underground water, quicken the fixed of soil, satisfy settlement after construction and stability requirement according to foundation situation.Its method comprises: establish broken stone pile 1, original hase is made certain camber, shop hardcore bed 2 or rubble add sand cushion 2, can lay two-layer geotextile reinforcement layer 3 on hardcore bed 2, every layer thickness 30cm.Fill sand or sandy loam layer 5.The purpose that reinforcement layer 3 is provided with has two: one, and reinforcement works the stability against sliding that increases embankment, and the 2nd, reinforcement prevents that to isolate capillary water the flyash filler from reducing because of water content causes embankment flyash intensity greatly.On geotechnological thing reinforcement separation layer 3, with 30cm one deck in accordance with regulations, vertically fill fine coal grieshoch 4 and roll to the compactness that requires.The sandy loam covering layer 5 that 50cm is set below the groove absolute altitude of road binds.Side slope is made bound edge with the sandy loam layer 5 of wide 2m (horizontal direction), forms soil property bound edge shell, with the stability of protection flyash side slope of embankment.Nonweaven geotextile rubble french drain is set on the soil-slope in length and breadth, and in the embankment design, flyash embankment and soil-slope is stablized checking computations.
During construction, after sub-surface and subbase mixed flyash, road materials more can be brought into play its advantage, made the deck of moulding and health have good mechanical performance, hardening property, water stability and certain frost resistance.
Claims (5)
1, a kind of speedway of roadbed powder application coal ash is characterized in that: it comprises broken stone pile (1) hardcore bed (2) reinforcement layer (3) fine coal grieshoch (4) and sandy loam covering layer (5); Base portion is inserted broken stone pile (1) and is had certain camber, is followed successively by by the order on lower floor to upper strata: hardcore bed (2) reinforcement layer (3) fine coal grieshoch (4) sandy loam covering layer (5).
2, the speedway of roadbed powder application coal ash according to claim 1 is characterized in that: described hardcore bed (2) also can be rubble and adds sand cushion, and this layer has identical camber according to original hase.
3, the speedway of roadbed powder application coal ash according to claim 1 is characterized in that: be equipped with two-layer geotextile in the described reinforcement layer (3), every layer thickness is 20-40cm.
4, the speedway of roadbed powder application coal ash according to claim 1 is characterized in that: described fine coal grieshoch (4) is for rolling the real density fine coal grieshoch to the desired density requirement, and this layer thickness is 20-40cm.
5, the speedway of roadbed powder application coal ash according to claim 1, it is characterized in that: described be used for speedway bind the layer sandy loam covering layer (5) be 30-60cm, the side slope width is the sandy loam bound edge of the 1-2m of horizontal direction, forms the bound edge shell of soil property.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620137620 CN200952106Y (en) | 2006-10-09 | 2006-10-09 | Express way utilizing powder coal ash on roadbed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620137620 CN200952106Y (en) | 2006-10-09 | 2006-10-09 | Express way utilizing powder coal ash on roadbed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200952106Y true CN200952106Y (en) | 2007-09-26 |
Family
ID=38810405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620137620 Expired - Fee Related CN200952106Y (en) | 2006-10-09 | 2006-10-09 | Express way utilizing powder coal ash on roadbed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200952106Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444115A (en) * | 2010-10-15 | 2012-05-09 | 同济大学 | Net sling-coated gravel pile |
| CN109108040A (en) * | 2018-07-23 | 2019-01-01 | 中国能源建设集团山西省电力勘测设计院有限公司 | A method of it improving thermal power plant flyash landfill and rolls efficiency |
| CN114875787A (en) * | 2022-03-09 | 2022-08-09 | 黑龙江省绥庆高速公路投资建设有限公司 | Filling construction process for flow-state fly ash abutment in cold region |
| CN115305757A (en) * | 2021-12-23 | 2022-11-08 | 山东建筑大学 | Metamaterial roadbed and construction method thereof |
-
2006
- 2006-10-09 CN CN 200620137620 patent/CN200952106Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444115A (en) * | 2010-10-15 | 2012-05-09 | 同济大学 | Net sling-coated gravel pile |
| CN109108040A (en) * | 2018-07-23 | 2019-01-01 | 中国能源建设集团山西省电力勘测设计院有限公司 | A method of it improving thermal power plant flyash landfill and rolls efficiency |
| CN115305757A (en) * | 2021-12-23 | 2022-11-08 | 山东建筑大学 | Metamaterial roadbed and construction method thereof |
| CN115305757B (en) * | 2021-12-23 | 2024-03-26 | 山东建筑大学 | Metamaterial roadbed and construction method thereof |
| CN114875787A (en) * | 2022-03-09 | 2022-08-09 | 黑龙江省绥庆高速公路投资建设有限公司 | Filling construction process for flow-state fly ash abutment in cold region |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |