CN108046667A - A kind of improvement Loess Filling and its application method for roadbed - Google Patents
A kind of improvement Loess Filling and its application method for roadbed Download PDFInfo
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- CN108046667A CN108046667A CN201711289777.4A CN201711289777A CN108046667A CN 108046667 A CN108046667 A CN 108046667A CN 201711289777 A CN201711289777 A CN 201711289777A CN 108046667 A CN108046667 A CN 108046667A
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/001—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing unburned clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/0048—Fibrous materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/06—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals
- C08F283/065—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polyethers, polyoxymethylenes or polyacetals on to unsaturated polyethers, polyoxymethylenes or polyacetals
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Road Paving Structures (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
It is described to improve material composition of the Loess Filling by following parts by weight the invention discloses a kind of improvement Loess Filling and its application method for roadbed：65 85 parts of loess, 12 25 parts of kaolin, 5 10 parts of slag, 8 12 parts of flyash, 25 parts of water-reducing agent, 0.5 2 parts of fiber, 12 18 parts of curing agent.The present invention is modified using kaolin, curing agent and fiber, improve the barrier performance of loess subgrade, improve soil shear strength, tension stress, anti-crack ability, hence it is evident that the defects of improving its later strength, making up soil body porosity, granular media, fissility, easy damaged.The application method of improvement loess provided by the invention, form of construction work is simple, and the raw material used can gather materials on the spot, with good economic efficiency and social benefit.
Description
Technical field
The present invention relates to civil construction field of material technology, more particularly to a kind of improvement Loess Filling for roadbed and its
Application method.
Background technology
Loess is distributed in China than wide, the Northwest in China such as Shaanxi, Ningxia, Gansu, Qinghai, Xinjiang,
There are the loess of large area and loess embankment distribution in the provinces and regions such as the Inner Mongol and Shanxi.Due to the special engineering properties of loess, tool
There are collapsibility and relatively low bearing capacity, easily generate various accidents resulting from poor quality of projects, seriously affected traffic safety, driving
The service life of speed and highway.
Loess is rich in ingredients calcium carbonate and its tuberculosis, and containing a small amount of middle dissolved salt and lyotropic salt, generally without apparent stratification, has
The denudation plane of interruption and the paleosol layer buried are accumulated, moisture content is low under native state, meets water easy disintegrating, and surface layer has saturated yielding more
Property, it is also easy to produce latent erosion and forms cratering etc..Often there is transverse crack in loess subgrade road surface, occurs relative settlement at crack, generates wrong
Platform；There is longitudinal crack in road surface, and crack forms slip-crack surface to curb peripheral extension when serious；Roadbed is whole after filled-up ground completion
Body or local subsidence.
The purpose of collapsible loess foundation processing is to improve the property of soil, reduces seepage of water, the compressibility of soil, controls its wet
The generation of property is fallen into, partly or entirely eliminates its collapsibility.Often the method for processing collapsible loess foundation has Sand-gravel-cushion Technioue, strong rammer
Method, compacting method, preimpregnation water process etc..And the requirement of these processing methods is high, difficulty of construction is big.And soil improvement is carried out, from basic
It is upper to solve the problems, such as easy depression existing for loess, the collapsibility of loess can be not only eliminated, the requirement to construction can also be reduced,
It increases economic efficiency.
The present invention provides a kind of improvement Loess Filling and its application method for roadbed, improves the barrier performance of loess,
The loess of improvement has the superperformances such as water stability, resistance to deformation, cracking resistance.And application method provided by the invention, construction requirement
Low, step is simple, gathers materials on the spot, with good economic efficiency.
The content of the invention
In view of the deficienciess of the prior art, present invention offer is a kind of for the improvement Loess Filling of roadbed and its user
Method, improves the barrier performance of loess, and the loess of improvement has the superperformances such as water stability, resistance to deformation, cracking resistance.And the present invention carries
The application method of confession, construction requirement is low, step is simple, gathers materials on the spot, with good economic efficiency.
To achieve these goals, the present invention is to realize by the following technical solutions：
The present invention provides a kind of improvement Loess Filling for roadbed, which is characterized in that the improvement Loess Filling is by following heavy
Measure the material composition of number：65-85 parts of loess, 12-25 parts of kaolin, 5-10 parts of slag, 8-12 parts of flyash, water-reducing agent
2-5 parts, 0.5-2 parts of fiber, 12-18 parts of curing agent.
The present invention improves the barrier performance of loess using kaolin, makes full use of the kaolinite and Meng Tuo in kaolin ingredient
Stone can be cured the principle of reaction with loess ingredient, improve the barrier performance of loess, with good economic efficiency and society
It can benefit.
Wherein, the water-reducing agent is high-early strength type polycarboxylic acids dehydragent.High-early strength type polycarboxylic acids dehydragent is by polycarboxylate
Water-reducing agent, early strength antifreezing agent, air entraining agent, water are formulated.High-early strength type polycarboxylic acids dehydragent preparation comprises the following steps：A. gather
The synthesis of carboxylic acid high-performance water reducing agent：Methoxy poly (ethylene glycol) is added in into reaction kettle, agitating and heating adds metering system
Acid, phenthazine, p-methyl benzenesulfonic acid are heated to 120 DEG C, when heat preservation 6 is small, obtain macromer methoxyl-polyethyleneglycol methyl-prop
Olefin(e) acid ester；Methacrylic acid and ammonium persulfate solution is added dropwise in heating and melting, and it is 6.5 that sodium hydroxide solution, which is added dropwise, and adjusts PH； b.
Prepare early-strength anti-freezing agent solution：It weighs water to add in reaction kettle, adds in calcium formate；It adds in triethanolamine etc. and early strength antifreezing agent is made
Solution；C. the making of air entraining agent：It weighs water to add in reaction kettle, adds in powdery three-level rosin, obtain air entraining agent；D. finished product makes：
It weighs polycarboxylate water-reducer to be added in reaction kettle, air entraining agent, early-strength anti-freezing agent solution is added in reaction kettle.
Wherein, the curing agent is by 15-20 parts of six hydrazine aluminum sulfate potassium, 30-45 parts of sodium aluminosilicate, calcium aluminosilicate 30-
1-3 parts of 45 parts, 10-15 parts of sodium sulphate, 1-3 parts of aluminium chloride and magnesium chloride form.
Wherein, the fiber is polypropylene fibre, polyethylene fibre, polyester fiber, polyacrylonitrile fibre one kind therein
It is or several.
It is modified in the present invention using fiber, can not only limit the lateral deformation of the soil body, the soil body can also be controlled
Vertical deformation, there is general reinforced earth not have the mechanical property of near-isotropic and good engineering properties for it.Fiber
This material under load action, can improve stress propagation and Strain Distribution, avoid the discontinuity in soil body deformation process,
Improve the stress performance of the soil body.Fiber can also effectively improve the micro-structure of the soil body, improve soil shear strength, tension stress,
Anti-crack ability, hence it is evident that the defects of improving its later strength, making up soil body porosity, granular media, fissility, easy damaged.By fibre
Tie up modified can inhibit because differential settlement causes the situation of local deformation.
The application method of a kind of improvement Loess Filling for roadbed, which is characterized in that the application method includes following
Step：
A, loess and kaolin are added in mixer, is uniformly mixed, watering wherein makes its moisture content be mixed for 15%-18%
The loess mixed, kaolin mixture are spread out and put in even mixing on roadbed, cover film processing 24 it is small when；
B, slag, flyash, water-reducing agent and curing agent are added in the loess and kaolin mixture that are handled through step a and turns mixing
Uniformly；
C, fiber is sheared, the fiber of shearing is uniformly laid on to the upper soll layer of step b processing, turned uniformly, leveling,
It rolls, conserve 10-15 days.
Improvement Loess Filling provided by the invention, by it is kaolinic effect improve its barrier performance, by curing agent into
The further loess consolidation of row, is cured again after being acted on by kaolin, and it is low, easy to solve native intensity existing for directly curing
The problem of cracking, has facilitation to curing, improves its consolidation effect.It is finally mixed again with fiber, significantly improves roadbed
The structural strength of soil, impermeability, vibration resistance, resisting wind erosion, stability, durability, and effectively limit the lateral deformation of roadbed, control
The sedimentation and deformation of roadbed processed.
The advantageous effect of technical solution provided in an embodiment of the present invention：
1st, the present invention is modified using kaolin, curing agent and fiber, improves the barrier performance of loess subgrade, improves the soil body
Shearing strength, tension stress, anti-crack ability, hence it is evident that improve its later strength, make up soil body porosity, granular media, fissility, easily
The defects of damage.
2nd, the application method of improvement loess provided by the invention, form of construction work is simple, and the raw material used can take on the spot
Material, with good economic efficiency and social benefit.
Specific embodiment
To make technical scheme and main points clearer, embodiment of the present invention is made below further detailed
Description.
The following examples are only intended to illustrate the technical solution of the present invention more clearly, therefore is only used as example, and cannot
It is limited the scope of the invention with this.
It should be noted that unless otherwise indicated, technical term or scientific terminology used in this application should be this hair
The ordinary meaning that bright one of ordinary skill in the art are understood.
Embodiment 1 improves the use of Loess Filling
Comprise the following steps：
（1）Raw material prepares：A, 15 parts of six hydrazine aluminum sulfate potassium, 35 parts of sodium aluminosilicate, 35 parts of calcium aluminosilicate, sodium sulphate 15 are taken
1 part of part, 3 parts of aluminium chloride and magnesium chloride are uniformly mixed, and curing agent is made；
B, prepared by high-early strength type polycarboxylic acids dehydragent：Methoxy poly (ethylene glycol) is added in into reaction kettle, agitating and heating adds first
Base acrylic acid, phenthazine, p-methyl benzenesulfonic acid are heated to 120 DEG C, when heat preservation 6 is small, obtain macromer methoxyl-polyethyleneglycol
Methacrylate；Methacrylic acid and ammonium persulfate solution is added dropwise in heating and melting, and sodium hydroxide solution adjusting PH is added dropwise and is
6.5；It weighs water to add in reaction kettle, adds in calcium formate；It adds in triethanolamine etc. and early-strength anti-freezing agent solution is made；Weigh water addition
In reaction kettle, powdery three-level rosin is added in, obtains air entraining agent；It weighs polycarboxylate water-reducer to be added in reaction kettle, by air entraining agent, morning
Strength antifreezing agent solution is added in reaction kettle.
C, raw material weighs：Weigh 65 parts of loess, 12 parts of kaolin, 10 parts of slag, 12 parts of flyash, the poly- carboxylic of early-strength
Sour 2 parts of based water reducer, 0.5 part of polyester fiber, 18 parts of curing agent.
（2）Construction：A, loess and kaolin are added in mixer, is uniformly mixed, watering wherein makes its moisture content
For 15%-18%, mix mixing thoroughly, the loess mixed, kaolin mixture spread out and put on roadbed, cover film processing 24 it is small when；
B, slag, flyash, water-reducing agent and curing agent are added in the loess and kaolin mixture that are handled through step a and turns mixing
Uniformly；
C, fiber is sheared, the fiber of shearing is uniformly laid on to the upper soll layer of step b processing, turned uniformly, leveling,
It rolls, conserve 10-15 days.
Embodiment 2 improves the use of Loess Filling
Comprise the following steps：
（1）Raw material prepares：A, 15 parts of six hydrazine aluminum sulfate potassium, 35 parts of sodium aluminosilicate, 35 parts of calcium aluminosilicate, sodium sulphate 15 are taken
2 parts of part, 2 parts of aluminium chloride and magnesium chloride are uniformly mixed, and curing agent is made；
B, prepared by high-early strength type polycarboxylic acids dehydragent：Methoxy poly (ethylene glycol) is added in into reaction kettle, agitating and heating adds first
Base acrylic acid, phenthazine, p-methyl benzenesulfonic acid are heated to 120 DEG C, when heat preservation 6 is small, obtain macromer methoxyl-polyethyleneglycol
Methacrylate；Methacrylic acid and ammonium persulfate solution is added dropwise in heating and melting, and sodium hydroxide solution adjusting PH is added dropwise and is
6.5；It weighs water to add in reaction kettle, adds in calcium formate；It adds in triethanolamine etc. and early-strength anti-freezing agent solution is made；Weigh water addition
In reaction kettle, powdery three-level rosin is added in, obtains air entraining agent；It weighs polycarboxylate water-reducer to be added in reaction kettle, by air entraining agent, morning
Strength antifreezing agent solution is added in reaction kettle.
C, raw material weighs：Weigh 85 parts of loess, 20 parts of kaolin, 10 parts of slag, 10 parts of flyash, the poly- carboxylic of early-strength
Sour 3 parts of based water reducer, 1.5 parts of polyethylene fibre, 12 parts of curing agent.
（2）Construction：A, loess and kaolin are added in mixer, is uniformly mixed, watering wherein makes its moisture content
For 15%-18%, mix mixing thoroughly, the loess mixed, kaolin mixture spread out and put on roadbed, cover film processing 24 it is small when；
B, slag, flyash, water-reducing agent and curing agent are added in the loess and kaolin mixture that are handled through step a and turns mixing
Uniformly；
C, fiber is sheared, the fiber of shearing is uniformly laid on to the upper soll layer of step b processing, turned uniformly, leveling,
It rolls, conserve 10-15 days.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe is described in detail the present invention with reference to foregoing embodiments, it will be understood by those of ordinary skill in the art that：Its according to
Can so modify to the technical solution recorded in foregoing embodiments either to which part or all technical characteristic into
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is not made to depart from various embodiments of the present invention technology
The scope of scheme should all cover among the claim of the present invention and the scope of specification.
Claims (7)
1. a kind of improvement Loess Filling for roadbed, which is characterized in that the improvement Loess Filling is by following parts by weight
Material composition：65-85 parts of loess, 12-25 parts of kaolin, 5-10 parts of slag, 8-12 parts of flyash, 2-5 parts of water-reducing agent, fibre
Tie up 0.5-2 parts, 12-18 parts of curing agent.
2. improvement Loess Filling according to claim 1, which is characterized in that the water-reducing agent subtracts for early-strength polycarboxylic-acid
Aqua.
3. improvement Loess Filling according to claim 1, which is characterized in that the curing agent is by six hydrazine aluminum sulfate potassium
15-20 parts, 30-45 parts of sodium aluminosilicate, 30-45 parts of calcium aluminosilicate, 10-15 parts of sodium sulphate, 1-3 parts of aluminium chloride and magnesium chloride
1-3 parts of compositions.
4. improvement Loess Filling according to claim 1, which is characterized in that the fiber is polypropylene fibre, polyethylene
Fiber, polyester fiber, polyacrylonitrile fibre one or more therein.
5. improvement Loess Filling according to claim 2, which is characterized in that the high-early strength type polycarboxylic acids dehydragent is by gathering
Carboxylate water-reducing agent, early strength antifreezing agent, air entraining agent, water are formulated.
6. improvement Loess Filling according to claim 5, which is characterized in that prepared by the high-early strength type polycarboxylic acids dehydragent
Comprise the following steps：A. the synthesis of high performance water reducing agent of polyocarboxy acid：Methoxy poly (ethylene glycol) is added in into reaction kettle, stirring adds
Heat adds methacrylic acid, phenthazine, p-methyl benzenesulfonic acid, is heated to 120 DEG C, when heat preservation 6 is small, obtains polymeric monomer methoxy
Base polyethylene glycol methacrylate-styrene polymer；Methacrylic acid and ammonium persulfate solution is added dropwise in heating and melting, and sodium hydroxide solution is added dropwise
It is 6.5 to adjust PH；B. early-strength anti-freezing agent solution is prepared：It weighs water to add in reaction kettle, adds in calcium formate；Add in triethanolamine
Etc. early-strength anti-freezing agent solution is made；C. the making of air entraining agent：It weighs water to add in reaction kettle, adds in powdery three-level rosin, must draw
Gas agent；D. finished product makes：It weighs polycarboxylate water-reducer to be added in reaction kettle, air entraining agent, early-strength anti-freezing agent solution be added in anti-
It answers in kettle.
7. the application method of a kind of improvement Loess Filling for roadbed, which is characterized in that the application method includes following step
Suddenly：
A, loess and kaolin are added in mixer, is uniformly mixed, watering wherein makes its moisture content be mixed for 15%-18%
The loess mixed, kaolin mixture are spread out and put in even mixing on roadbed, cover film processing 24 it is small when；
B, slag, flyash, water-reducing agent and curing agent are added in the loess and kaolin mixture that are handled through step a and turns mixing
Uniformly；
C, fiber is sheared, the fiber of shearing is uniformly laid on to the upper soll layer of step b processing, turned uniformly, leveling,
It rolls, conserve 10-15 days.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711289777.4A CN108046667A (en) | 2017-12-08 | 2017-12-08 | A kind of improvement Loess Filling and its application method for roadbed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711289777.4A CN108046667A (en) | 2017-12-08 | 2017-12-08 | A kind of improvement Loess Filling and its application method for roadbed |
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Cited By (6)
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| CN109970417A (en) * | 2019-04-30 | 2019-07-05 | 杭州一碳化工研究所有限公司 | Blue bricks modelled after an antique and preparation method thereof |
| CN112608755A (en) * | 2020-12-09 | 2021-04-06 | 中建三局集团有限公司 | Composite shrinkage reducing agent suitable for high-flow collapsible loess and application thereof |
| CN112777984A (en) * | 2021-01-08 | 2021-05-11 | 黄河勘测规划设计研究院有限公司 | Curing agent for damming material of silty dam in loess region |
| CN112812780A (en) * | 2021-01-04 | 2021-05-18 | 黄河勘测规划设计研究院有限公司 | Hydrophobic anti-scouring loess curing agent |
| CN113716932A (en) * | 2021-10-15 | 2021-11-30 | 陕西省土地工程建设集团有限责任公司铜川分公司 | Anti-permeability and anti-freeze-thawing composite loess and preparation method thereof |
| CN114686239A (en) * | 2022-03-25 | 2022-07-01 | 山西路桥再生资源开发有限公司 | Coal-based solid waste soil curing agent and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970417A (en) * | 2019-04-30 | 2019-07-05 | 杭州一碳化工研究所有限公司 | Blue bricks modelled after an antique and preparation method thereof |
| CN112608755A (en) * | 2020-12-09 | 2021-04-06 | 中建三局集团有限公司 | Composite shrinkage reducing agent suitable for high-flow collapsible loess and application thereof |
| CN112812780A (en) * | 2021-01-04 | 2021-05-18 | 黄河勘测规划设计研究院有限公司 | Hydrophobic anti-scouring loess curing agent |
| CN112812780B (en) * | 2021-01-04 | 2021-11-23 | 黄河勘测规划设计研究院有限公司 | Hydrophobic anti-scouring loess curing agent |
| CN112777984A (en) * | 2021-01-08 | 2021-05-11 | 黄河勘测规划设计研究院有限公司 | Curing agent for damming material of silty dam in loess region |
| CN112777984B (en) * | 2021-01-08 | 2022-05-06 | 黄河勘测规划设计研究院有限公司 | Curing agent for damming material of silty dam in loess region |
| CN113716932A (en) * | 2021-10-15 | 2021-11-30 | 陕西省土地工程建设集团有限责任公司铜川分公司 | Anti-permeability and anti-freeze-thawing composite loess and preparation method thereof |
| CN114686239A (en) * | 2022-03-25 | 2022-07-01 | 山西路桥再生资源开发有限公司 | Coal-based solid waste soil curing agent and preparation method thereof |
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Application publication date: 20180518 |