CN104499394B - A kind of zero padding black cotton regur soil roadbed Treatment Methods - Google Patents
A kind of zero padding black cotton regur soil roadbed Treatment Methods Download PDFInfo
- Publication number
- CN104499394B CN104499394B CN201410769105.3A CN201410769105A CN104499394B CN 104499394 B CN104499394 B CN 104499394B CN 201410769105 A CN201410769105 A CN 201410769105A CN 104499394 B CN104499394 B CN 104499394B
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- black cotton
- cotton regur
- soil
- regur soil
- punishment
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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
- E01C3/00—Foundations for pavings
- E01C3/04—Foundations produced by soil stabilisation
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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
- E01C3/00—Foundations for pavings
- E01C3/003—Foundations for pavings characterised by material or composition used, e.g. waste or recycled material
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Structures (AREA)
Abstract
The invention provides a kind of zero padding black cotton regur soil roadbed Treatment Methods. The method comprises the steps: step 1: road excavation: excavate the deep black cotton regur soil of 80cm within the scope of roadbed, base compacting, leveling; Step 2: spray black cotton regur soil punishment firming agent after box cut bottom surface and side form stationary crack; Step 3: the black cotton regur soil of making two-layer 50cm thickness black cotton regur soil punishment firming agent punishment altogether, it is desirable to compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm; Step 4: lay 30cm gravelly soil: gravelly soil once-paving rolls, and compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm; Step 5: build rubble french drain and gutter: rubble french drain is located at gutter bottom. The present invention strengthens excavation face by spraying black cotton regur soil punishment firming agent on black cotton regur soil road excavation pit ground and side, and the backfill of firming agent punishment black cotton regur soil achieves the utilization of the black cotton regur soil side of abandoning, and has reached rock-steady structure, the purpose of protection environment.
Description
Technical field
The present invention relates to application black cotton regur soil punishment firming agent and the rubble french drain a kind of Treating technology in black cotton regur soil zero padding roadbed is punished.
Background technology
Zero padding or the low embankment of filling out in black cotton regur soil area are the severely afflicated areas that subgrade and pavement cracking occurs. Owing to landform is very smooth, after original place table is backbreak, changing and fill out, it is actually formed artificial roadbed substrate water catchment area, and this water catchment area is smooth due to landform, earth's surface infiltration and capillary water intermediary water possibly even cannot be got rid of, cause roadbed substrate to soak for a long time, black cotton regur soil dilatancy; After Withdrawal, do not take effective Water-retaining Measure in time during due to construction, cause black cotton regur soil substrate dehydration, shrink dry and cracked, reflex to roadbed, cause crevice of roadbed.
The method punishing black cotton regur soil at present mainly has: (1) mineral-type firming agent is punished, and is mainly Calx, cement, industrial residue and waterglass class firming agent; (2) punishment of organic firming agent, is mainly organic polymer firming agent, surfactant-based firming agent etc.; (3) physics punishment, completely cuts off black cotton regur soil and extraneous water_air exchange mainly through waterproof, draining, water proof and hydrophobic mode.
Surfactant-based firming agent is also referred to as cationic cure agent, its solidification intensity is high, because the consumption of surfactant comes little many compared with other firming agent, so cost is relatively low, and it is liquid, just can mix thoroughly by the method sprayed, construct fairly simple, and cure cycle is short, shorten the engineering time, save construction cost. Conventional surfactant has oil sulfonated product, for instance dodecyl sodium sulfate and cetyl ammonium bromide etc.
Summary of the invention
Technical problem: it is an object of the invention to provide a kind of zero padding black cotton regur soil roadbed Treatment Methods. This by be dissolved in lime water dodecylbenzene sodium sulfonate (LSDBS) punish black cotton regur soil surface, it is possible between roadbed filling and black cotton regur soil formed one layer of sealing coat, for black cotton regur soil backfill provide good external condition. LSDBS punishes black cotton regur soil and the road structure of gravelly soil displacement black cotton regur soil, the problem that can solve black cotton regur soil subgrade drainage poor stability, make use of black cotton regur soil as roadbed backfill soil simultaneously, decreases the side of abandoning, saved expense and decreased ambient pressure.
Technical scheme: the present invention provides following technical scheme:
A kind of zero padding black cotton regur soil roadbed Treatment Methods, the method comprises the steps,
Step 1, road excavation: excavate the deep black cotton regur soil of 80cm within the scope of roadbed, base compacting, leveling;
Step 2, sprays black cotton regur soil punishment firming agent after box cut bottom surface and side form stationary crack;
Step 3, the black cotton regur soil of making two-layer 50cm thickness black cotton regur soil punishment firming agent punishment altogether, it is desirable to compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm;
Step 4, lays 30cm gravelly soil: gravelly soil once-paving rolls, and compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm;
Step 5, builds rubble french drain and gutter: rubble french drain is located at gutter bottom.
Preferably, black cotton regur soil punishment firming agent is the solution made by dodecylbenzene sodium sulfonate and saturated limewater 1.5��2:100 in mass ratio.
Beneficial effect: be 1. dissolved in lime water dodecylbenzene sodium sulfonate (LSDBS) have good permeability and reinforce black cotton regur soil effect, spray it in road excavation face, thus defining one layer of sealing coat between roadbed inner stuffing and black cotton regur soil, be conducive to the equilibrium of roadbed interior moisture content. 2. the backfill of LSDBS punishment black cotton regur soil achieves the utilization of black cotton regur soil, decreases the side of abandoning, has saved construction costs, and be conducive to conserving water and soil and alleviating ambient pressure. 3. the use of rubble french drain has blocked the seepage action of ground water impact on roadbed filling, and the water content equilibrium of roadbed and roadbed periphery black cotton regur soil is had good effect.
Accompanying drawing explanation
The method processing black cotton regur soil embankment below with reference to 1��4 pair of anti-seepage geotextile of the present invention of accompanying drawing is described in detail (in figure, unit is in millimeter).
Fig. 1 is the sectional drawing after using the construction of zero padding black cotton regur soil roadbed Treatment Methods;
Fig. 2��Fig. 4 is zero padding black cotton regur soil roadbed Treatment Methods punishment step, wherein:
Fig. 2 is road excavation, compacting and after leveling and spray the sectional drawing after black cotton regur soil firming agent;
Fig. 3 is the sectional drawing after back-filling in layers black cotton regur soil firming agent punishment black cotton regur soil and gravelly soil;
Fig. 4 is the roadbed section figure after gutter excavation and rubble blind ditch construction
1. pavement structure in figure, 2. gravelly soil, 3.LSDBS punishes black cotton regur soil, 4. rubble french drain, 5. gutter, 6. sprays LSDBS and punishes pit face, 7. original place upper thread.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail, but they do not constitute limitation of the invention, only for example. Simultaneously by illustrating that advantages of the present invention will become clearer from easy to understand.
Zero padding black cotton regur soil roadbed Treatment Methods provided by the invention, the method spray in bottom and side after comprising the steps: road excavation 80cm be dissolved in lime water dodecylbenzene sodium sulfonate, lay pavement structure after placement in layers dodecylbenzene sodium sulfonate punishment black cotton regur soil 50cm and gravelly soil 30cm, rubble french drain is set under gutter simultaneously.
Present invention also offers a kind of zero padding black cotton regur soil roadbed Treatment Methods, the method in turn includes the following steps:
Step 1: road excavation: excavate the deep black cotton regur soil of 80cm within the scope of roadbed, base compacting, leveling;
Step 2: spray be dissolved in lime water dodecylbenzene sodium sulfonate: formed until box cut bottom surface and side and after stationary crack, spray the dodecylbenzene sodium sulfonate being dissolved in lime water. The mass ratio of dodecylbenzene sodium sulfonate (SDBS) fountain height and its punished black cotton regur soil is 0.3:99.7;
Step 3: lay two-layer 50cm dodecylbenzene sodium sulfonate punishment black cotton regur soil altogether: dodecylbenzene sodium sulfonate punishment black cotton regur soil divides two-layer to lay compacting, and compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm;
Step 4: lay 30cm gravelly soil: gravelly soil once-paving rolls, and compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm;
Step 5: build rubble french drain and gutter: rubble french drain is located at gutter bottom.
Subgrade construction in turn includes the following steps:
(1) road excavation: excavate the deep black cotton regur soil of 80cm within the scope of roadbed, base compacting, leveling;
(2) spray be dissolved in lime water dodecylbenzene sodium sulfonate: formed until box cut bottom surface and side and after stationary crack, spray the dodecylbenzene sodium sulfonate (LSDBS) being dissolved in lime water;
(3) lay two-layer 50cmLSDBS altogether and punish black cotton regur soil: Calx punishment black cotton regur soil divides two-layer to lay compacting, and compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm;
(4) 30cm gravelly soil is laid: gravelly soil once-paving rolls, and compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm.
Claims (2)
1. a zero padding black cotton regur soil roadbed Treatment Methods, it is characterised in that the method comprises the steps,
Step 1, road excavation: excavate the deep black cotton regur soil of 80cm within the scope of roadbed, base compacting, leveling;
Step 2, sprays black cotton regur soil punishment firming agent after box cut bottom surface and side form stationary crack;
Step 3, the black cotton regur soil of making two-layer 50cm thickness black cotton regur soil punishment firming agent punishment altogether, it is desirable to compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm;
Step 4, lays 30cm gravelly soil: gravelly soil once-paving rolls, and compactness is not less than 95%, and compacting rear surface flatness is less than �� 5cm;
Step 5, builds rubble french drain and gutter: rubble french drain is located at gutter bottom.
2. zero padding black cotton regur soil roadbed Treatment Methods according to claim 1, it is characterised in that black cotton regur soil punishment firming agent is the solution made by dodecylbenzene sodium sulfonate and saturated limewater 1.5��2:100 in mass ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769105.3A CN104499394B (en) | 2014-12-12 | 2014-12-12 | A kind of zero padding black cotton regur soil roadbed Treatment Methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410769105.3A CN104499394B (en) | 2014-12-12 | 2014-12-12 | A kind of zero padding black cotton regur soil roadbed Treatment Methods |
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| Publication Number | Publication Date |
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| CN104499394A CN104499394A (en) | 2015-04-08 |
| CN104499394B true CN104499394B (en) | 2016-06-08 |
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| CN201410769105.3A Expired - Fee Related CN104499394B (en) | 2014-12-12 | 2014-12-12 | A kind of zero padding black cotton regur soil roadbed Treatment Methods |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105672076B (en) * | 2016-03-09 | 2018-05-25 | 中国路桥工程有限责任公司 | A kind of water proof road structure |
| CN107675577B (en) * | 2017-09-26 | 2020-05-19 | 中冶集团武汉勘察研究院有限公司 | Road subgrade closed cushion structure in soft soil area and construction method thereof |
| CN114635325A (en) * | 2022-04-18 | 2022-06-17 | 浙江中桓建设有限公司 | Method for reinforcing roadbed by using soil curing agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3649657B2 (en) * | 2000-06-28 | 2005-05-18 | 株式会社シーマコンサルタント | Soil improvement method |
| CN100387784C (en) * | 2004-09-07 | 2008-05-14 | 陈永烽 | Expansion soil ecological modifying agent and construction method |
| CN202466341U (en) * | 2012-03-01 | 2012-10-03 | 长沙理工大学 | Inflation dirt road bed structure |
| CN103741567A (en) * | 2013-12-17 | 2014-04-23 | 柳州东风化工股份有限公司 | Method for curing base course and subbase of pavement by adopting soil stabilizing agent |
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