CN108035206A - A kind of construction method of road - Google Patents
A kind of construction method of road Download PDFInfo
- Publication number
- CN108035206A CN108035206A CN201711203094.2A CN201711203094A CN108035206A CN 108035206 A CN108035206 A CN 108035206A CN 201711203094 A CN201711203094 A CN 201711203094A CN 108035206 A CN108035206 A CN 108035206A
- Authority
- CN
- China
- Prior art keywords
- construction method
- foam
- foam concrete
- construction
- concrete
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
-
- 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
- C04B28/02—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 hydraulic cements other than calcium sulfates
-
- 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
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
- E01C7/14—Concrete paving
- E01C7/142—Mixtures or their components, e.g. aggregate
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of construction method of road.This construction method comprises the following steps：1) construction site prepares；2) cement slurry is prepared；3) foam is prepared；4) foam concrete is prepared；5) foam concrete pours；6) cast-in-place foamed concrete conserves.The present invention proposes a kind of construction method of cast-in-place foamed concrete in highway high roadbed, can carry out very easy and efficient continuous placing, and its pouring quality meets the requirement of site operation.
Description
Technical field
The present invention relates to a kind of construction method of road.
Background technology
Western China, landforms, in mountain area building highway, are subject to landform, landforms, hydrogeology based on mountainous region
The limitation of condition, inevitably needs to carry out existing roadbed high roadbed enlarging construction；While in order to meet national entirety
Planning requirement, and the earthwork resource of excavation is preferably made good use of, can more and more it be used when carrying out highway extension project
The form of high-fill roadbed.In High Grade Highway in Mountain Area, embankment and cut subgrade account for 80%, wherein the height more than 20m is filled out
Fang Ludi is not within minority.And as the promotion of national policy, transport development are quickly grown, in highway extension project from now on
In, the structure type of high embankment all will further improve, high embankment will also become roadbed either quantitatively or in height
The principal mode of structure.
It is higher to its bottom foundation trench requirement for bearing capacity since soil body vertical pressure is larger in high-fill roadbed region, and
Often due to the duration is tighter, its sufficient static balance time can not be given, cause newly to repair roads easily goes out in use
Existing differential settlement phenomenon.It is desirable to a kind of efficiently convenient construction method is researched and developed, to meet that the construction of highway high roadbed will
Ask.
The content of the invention
It is an object of the invention to provide a kind of construction method of road.
The technical solution used in the present invention is：
A kind of construction method of road, comprises the following steps：
1) construction site prepares：Smooth, cleaning construction site, separates place into some pieces of construction areas with template；
2) cement slurry is prepared：In mixer, cement, flyash and miberal powder are first mixed into siccative, water is added and mixes
Close, obtain cement slurry；
3) foam is prepared：In foaming machine, by concrete foamer and water mixed preparing foaming agent solution, foaming agent is expedited the emergence of
Solution foaming, obtains foam；
4) foam concrete is prepared：By cement slurry and foams mix, foam concrete is obtained；
5) foam concrete pours：Foam concrete is pumped to construction area with pipeline, by foam concrete from
Stream is poured；
6) foam concrete conserves：After foam concrete final set, watering maintenance is carried out.
In step 1), the height of template<1m, the area of every piece of construction area<400m2。
In step 2), the mass ratio of cement, flyash and miberal powder is (4.5~5.5)：(2.5~3.5)：(1.5~2.5)；
Solid content in cement slurry is 55~65wt%.
In step 2), cement is Portland cement, and flyash is II grade of F class flyash, and miberal powder is ground granulated blast furnace slag.
In step 2), the rotating speed of mixer is 20~40r/min, and the mixing time of siccative is 5~10min, is added
The time being mixed after water is 10~15min.
In step 3), the mass ratio 1 of concrete foamer and water：(18~20)；It is to pass through air compressor to expedite the emergence of foaming
Foaming is expedited the emergence of, the operating pressure of air compressor is 0.7~0.9MPa；Expansion ratio is the 18~22 of foaming agent solution volume
Times.
In step 4), foam accounts for the 60~70% of foam concrete cumulative volume.
In step 4), the wet density of foam concrete is controlled in 500kg/m3~600kg/m3。
In step 5), the outlet of pipeline and foam concrete to pour face concordant.
In step 6), the time of maintenance is no less than 10 days.
The beneficial effects of the invention are as follows：
The present invention proposes a kind of construction method of road, can carry out very easy and efficient continuous placing, and its
Pouring quality meets the requirement of site operation.
Embodiment
A kind of construction method of road, comprises the following steps：
1) construction site prepares：Smooth, cleaning construction site, separates place into some pieces of construction areas with template；
2) cement slurry is prepared：In mixer, cement, flyash and miberal powder are first mixed into siccative, water is added and mixes
Close, obtain cement slurry；
3) foam is prepared：In foaming machine, by concrete foamer and water mixed preparing foaming agent solution, foaming agent is expedited the emergence of
Solution foaming, obtains foam；
4) foam concrete is prepared：By cement slurry and foams mix, foam concrete is obtained；
5) foam concrete pours：Foam concrete is pumped to construction area with pipeline, by foam concrete from
Stream is poured；
6) foam concrete conserves：After foam concrete final set, watering maintenance is carried out.
Preferably, in step 1), the height of template<1m, the area of every piece of construction area<400m2。
Preferably, in step 2), the mass ratio of cement, flyash and miberal powder is (4.5~5.5)：(2.5~3.5)：(1.5
~2.5)；Solid content in cement slurry is 55~65wt%；It is further preferred that the mass ratio of cement, flyash and miberal powder
For 5：3：2；Solid content in cement slurry is 60wt%.
Preferably, in step 2), cement is Portland cement, and flyash is II grade of F class flyash, and miberal powder is blast furnace
Slag powders.
Preferably, in step 2), the rotating speed of mixer is 20~40r/min, mixing time of siccative for 5~
10min, it is 10~15min to add after water the time being mixed.
Preferably, in step 3), the mass ratio 1 of concrete foamer and water：(18~20)；It is further preferred that step
3) in, the mass ratio 1 of concrete foamer and water：19.
Preferably, in step 3), it is to expedite the emergence of foaming, the operating pressure of air compressor by air compressor to expedite the emergence of foaming
For 0.7~0.9MPa；It is further preferred that in step 3), the operating pressure of air compressor is 0.8MPa.
Preferably, in step 3), expansion ratio is 18~22 times of foaming agent solution volume；It is further preferred that step
3) in, expansion ratio is 20 times of foaming agent solution volume.
Further, in step 3), concrete foamer prepares the Traditional blowing agents used, such as rosin for Foam lightweight soil
Sour soaps foaming agent, metallic aluminium powder foaming agent, vegetable protein foaming agent, animal protein foaming agent, resin soaps foaming agent, hydrolysis
Blood glue foaming agent, mahogany acid aluminium foaming agent etc..
Preferably, in step 4), foam accounts for the 60~70% of foam concrete cumulative volume.
Preferably, in step 4), the wet density of foam concrete is controlled in 500kg/m3~600kg/m3。
Preferably, in step 5), the outlet of pipeline and foam concrete to pour face concordant.
Preferably, in step 6), the time of maintenance is no less than 10 days；It is further preferred that in step 6), the time of maintenance
For 10~14 days.
Present disclosure is described in further detail below by way of specific embodiment.
Embodiment：
1st, construction site prepares
Farm Planning includes：Levelling of the land, cleans place rubbish and floating dust, the surface dust in place cleaning, in order to avoid influence to pour
The combination power of foam concrete and basic unit after building, keeps pending place clean, smooth, firm and dry；During dry weather
Watering pretreatment is carried out to place, place is soaked, at least spills twice, to increase the combination power of pouring layer and basic unit, but basic unit's table
Face must not have obvious ponding, with prevent basic unit because absorb water it is excessive and caused by lather collapse in foam concrete；To be constructed field
Ground is separated into area with template and is less than 400m2Region, and with falsework fixed form, prevent foam coagulation in work progress
Earth lateral pressure causes template to collapse；Form height needs to adjust according to each construction, and each construction height is no more than 1m.
2nd, cement slurry is prepared
By Portland cement, II grade of F classes flyash, ground granulated blast furnace slag in mass ratio 5：3：Stirred in 2 addition mixers
Mix 5~10 minutes, speed of agitator control is in 20~40r/min, airborne dust during preventing that powder from stirring；Stirred in tentatively uniformly mixed
Mix in machine by cement：Flyash：Miberal powder：Water=5：3：2：6.67 mass ratio adds water, is then turned on mixer and continues to stir
10min, is mixed into the cement slurry that concentration is 60%.
3rd, foam is prepared
The foaming agent feed pipe of foaming machine is connected in concrete foamer, while connects the water inlet pipe of foaming machine, is set
Good dilution ratio is 20, i.e., the mass ratio of foaming agent and water is 1：19, it is made into foaming agent solution.Then air compression is connected
Machine, the pressure for setting air compressor is 0.8MPa, starts to foam, and final expansion ratio is 20 times, i.e., foams by volume
Agent solution：Foam=1：20, foam diameter is 0.5~3mm.
4th, foam concrete is prepared
The cement slurry that the cement slurry prepared in step 2) is at the uniform velocity conveyed into foaming machine by pumping line is fed
Mouthful, while the stir storehouse that the foam prepared is conveyed into foaming machine is stirred, and treats that both after mixing, take what is mixed
Foam concrete measures wet density, and control wet density is in 500kg/m3~600kg/m3Between, foam volume accounts for total foam coagulation at this time
The 60%~70% of soil body product.
5th, foam concrete pours
The foam concrete mixed is pumped into the ready workspace of step 1 by pipeline, pipeline opening is mixed with foam
It is concordant to coagulate the liquid level of soil, reduces contact of the foam concrete with air to the greatest extent, prevents from defoaming.Treat that a predetermined workspace pours
After highly reaching design height, pipeline opening can be improved foam concrete progress entirety is put down, then stop feed, transfer pipe
Road goes to next workspace, and the workspace poured does not have to manually be struck off.
6th, cast-in-place foamed concrete conserves
Start watering maintenance after foam concrete final set, prevent foam concrete surface dehydration dry shrinkage and cracking.During summer,
Watering at least 3 times daily；During winter, curing temperature should be controlled at 0~35 DEG C.Conserving the time limit must not be less than 10 days, can be appropriate
Extend to 14 days.After maintenance, its intensity can reach more than 1MPa, meet the construction requirement at scene.
The light foam concrete that the present invention is prepared, the concrete light of its weight ratio same volume, can greatly reduce
Relevant pressure and posterior settlement, therefore the high roadbed application of light foam concrete progress highway is used, after can saving on a large scale
The maintenance cost of phase and guarantee traffic safety.
Ratio and the ratio of mud of the present invention by controlling cement, flyash and miberal powder etc., makes the wet density of foam concrete
For 500kg/m3~600kg/m3Between, it is possible to achieve Self-leveling, while its intensity can also reach the requirement of engineering, without as mesh
Preceding construction method, it is also necessary to manually go to strike off, substantial amounts of cost of labor can be saved, while improve the efficiency poured, shorten
The duration of construction.
Claims (10)
- A kind of 1. construction method of road, it is characterised in that：Comprise the following steps：1) construction site prepares：Smooth, cleaning construction site, separates place into some pieces of construction areas with template；2) cement slurry is prepared：In mixer, cement, flyash and miberal powder are first mixed into siccative, water mixing is added, obtains To cement slurry；3) foam is prepared：In foaming machine, by concrete foamer and water mixed preparing foaming agent solution, foaming agent solution is expedited the emergence of Foaming, obtains foam；4) foam concrete is prepared：By cement slurry and foams mix, foam concrete is obtained；5) foam concrete pours：Foam concrete is pumped to construction area with pipeline, passes through flowing into certainly for foam concrete Row pours；6) foam concrete conserves：After foam concrete final set, watering maintenance is carried out.
- A kind of 2. construction method of road according to claim 1, it is characterised in that：In step 1), the height of template< 1m, the area of every piece of construction area<400m2。
- A kind of 3. construction method of road according to claim 1, it is characterised in that：In step 2), cement, flyash and The mass ratio of miberal powder is (4.5~5.5)：(2.5~3.5)：(1.5~2.5)；Solid content in cement slurry for 55~ 65wt%.
- A kind of 4. construction method of road according to claim 3, it is characterised in that：In step 2), cement is ordinary silicon Acid salt cement, flyash are II grade of F class flyash, and miberal powder is ground granulated blast furnace slag.
- A kind of 5. construction method of road according to claim 1, it is characterised in that：In step 2), the rotating speed of mixer For 20~40r/min, the mixing time of siccative is 5~10min, and it is 10~15min to add after water the time being mixed.
- A kind of 6. construction method of road according to claim 1, it is characterised in that：In step 3), concrete foamer With the mass ratio 1 of water：(18~20)；It is to expedite the emergence of foaming, the operating pressure of air compressor by air compressor to expedite the emergence of foaming For 0.7~0.9MPa；Expansion ratio is 18~22 times of foaming agent solution volume.
- A kind of 7. construction method of road according to claim 1, it is characterised in that：In step 4), foam accounts for foam and mixes The 60~70% of solidifying soil cumulative volume.
- A kind of 8. construction method of road according to claim 1, it is characterised in that：In step 4), foam concrete Wet density is controlled in 500kg/m3~600kg/m3。
- A kind of 9. construction method of road according to claim 1, it is characterised in that：In step 5), the outlet of pipeline with Foam concrete to pour face concordant.
- A kind of 10. construction method of road according to claim 1, it is characterised in that：In step 6), the time of maintenance is not Less than 10 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203094.2A CN108035206A (en) | 2017-11-27 | 2017-11-27 | A kind of construction method of road |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711203094.2A CN108035206A (en) | 2017-11-27 | 2017-11-27 | A kind of construction method of road |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108035206A true CN108035206A (en) | 2018-05-15 |
Family
ID=62094094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711203094.2A Pending CN108035206A (en) | 2017-11-27 | 2017-11-27 | A kind of construction method of road |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108035206A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983892A (en) * | 2019-12-25 | 2020-04-10 | 广东冠新建设有限公司 | Foamed light soil and pouring construction process thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896024A (en) * | 2005-07-11 | 2007-01-17 | 张卫党 | High-performance cement and concrete and their production |
| CN102910885A (en) * | 2011-08-01 | 2013-02-06 | 明伦建材工业（苏州）有限公司 | Wear-resistant cement mortar, wear-resistant floor and preparation method thereof |
| CN202936687U (en) * | 2012-11-27 | 2013-05-15 | 中建保华建筑有限责任公司 | Cement foamed concrete floor |
| CN203373627U (en) * | 2013-06-26 | 2014-01-01 | 义乌市恒风路桥有限公司 | Road with light foamed base material |
| CN105777025A (en) * | 2016-03-09 | 2016-07-20 | 武汉理工大学 | Light, thermal-insulating and early-strength type cement-based ground self-leveling material and preparation method thereof |
-
2017
- 2017-11-27 CN CN201711203094.2A patent/CN108035206A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1896024A (en) * | 2005-07-11 | 2007-01-17 | 张卫党 | High-performance cement and concrete and their production |
| CN102910885A (en) * | 2011-08-01 | 2013-02-06 | 明伦建材工业（苏州）有限公司 | Wear-resistant cement mortar, wear-resistant floor and preparation method thereof |
| CN202936687U (en) * | 2012-11-27 | 2013-05-15 | 中建保华建筑有限责任公司 | Cement foamed concrete floor |
| CN203373627U (en) * | 2013-06-26 | 2014-01-01 | 义乌市恒风路桥有限公司 | Road with light foamed base material |
| CN105777025A (en) * | 2016-03-09 | 2016-07-20 | 武汉理工大学 | Light, thermal-insulating and early-strength type cement-based ground self-leveling material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 朱效荣: "《数字量化混凝土实用技术》", 31 May 2016, 北京：中国建材工业出版社 * |
| 魏林涛: "轻质泡沫混凝土在高填方路基填筑工程中的应用", 《建材世界》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110983892A (en) * | 2019-12-25 | 2020-04-10 | 广东冠新建设有限公司 | Foamed light soil and pouring construction process thereof |
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