CN106565158A - Construction method of anti-crack concrete ground - Google Patents
Construction method of anti-crack concrete ground Download PDFInfo
- Publication number
- CN106565158A CN106565158A CN201610913128.6A CN201610913128A CN106565158A CN 106565158 A CN106565158 A CN 106565158A CN 201610913128 A CN201610913128 A CN 201610913128A CN 106565158 A CN106565158 A CN 106565158A
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- CN
- China
- Prior art keywords
- concrete
- crack
- crack concrete
- construction method
- fiber
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- 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.)
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Classifications
-
- 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
-
- 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
-
- 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
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
-
- 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
- C04B2111/34—Non-shrinking or non-cracking materials
- C04B2111/343—Crack resistant materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a construction method of an anti-crack concrete ground. The construction method of the anti-crack concrete ground comprises the following steps that firstly, fiber is added to concrete with cement paste and mortar as base materials for mixing; secondly, the concrete mixed with the fiber is stirred, so that anti-crack concrete is formed; thirdly, the anti-crack concrete is pumped to an operation face to be tamped; and finally, plastering is conducted when the anti-crack concrete approaches to initial setting. According to the construction method of the anti-crack concrete ground, the fiber which is high in tensile strength, large in ultimate elongation and good in alkali resistance is added to the traditional concrete with the cement paste and the mortar as the base materials, so that the surface is smooth, concrete cracks can be reduced, the attractiveness of the concrete ground is improved, the crack maintenance expense of the concrete ground is reduced, and the forming quality and strength reach design requirements.
Description
Technical field
The present invention relates to the realm of building construction, more particularly to a kind of construction method on anti-crack concrete ground.
Background technology
Concrete is a kind of important construction material in construction, because its intensity is high, plasticity is good and performance is good
Advantage it is widely applied in various construction.
It is that Binder Materials, sand, masonry aggregate are made by cement in conventional concrete；Press with water (additive and admixture can be contained)
Certain proportion coordinate, it is agitated obtained by plain concrete, as a kind of widely used structural building material, concrete have can
Pour, economic, durable, fire resisting, field fabrication the advantages of, while also having, tensile strength is low, limit elongation is little, property is crisp strong,
So that concrete have the shortcomings that one it is fatal --- crack.The appearance in crack seriously result in the aesthetic property and safety of building
Property, cause the Quality Down of architectural engineering.
The information for being disclosed in the background section is merely intended to increase the understanding of the general background to the present invention, and should not
When the prior art for being considered to recognize or imply in any form the information structure well known to persons skilled in the art.
The content of the invention
It is an object of the invention to provide a kind of construction method on the anti-crack concrete ground of simple and reasonable steps, the cracking resistance
The construction method of mattess in the conventional concrete for making base material with cement mortar, mortar by adding tensile strength height, pole
The limit fiber that elongation percentage is big, alkali resistance is good, surface is smooth, can reduce distress in concrete, increases and decreases the attractive in appearance of mattess, section
The maintenance cost in the crack of mattess has been saved, and Forming Quality intensity reaches design requirement.
For achieving the above object, the invention provides a kind of construction method on anti-crack concrete ground, comprises the following steps：
First, fiber is added to carry out volume in the concrete for making base material with cement mortar, mortar；Secondly, to mixed with the concrete of fiber
It is stirred to form anti-crack concrete；Again, anti-crack concrete is pumped to into operating surface to be consolidated；Finally, anti-crack concrete
Wiped one's face when being close to initial set.
Preferably, in above-mentioned technical proposal, fiber is chopped fiber, long fibre or fibre.
Preferably, in above-mentioned technical proposal, the draw ratio of chopped fiber is not more than 100.
Preferably, in above-mentioned technical proposal, the draw ratio of chopped fiber is 30～80.
Preferably, in above-mentioned technical proposal, long fibre is woven glass roving fabric or polypropylene fibrillated film.
Preferably, in above-mentioned technical proposal, fibre is fiberglass gridding cloth or glass mat.
Preferably, in above-mentioned technical proposal, anti-crack concrete is stirred using forced mixer.
Preferably, in above-mentioned technical proposal, forced mixer stirring is fed by reciprocating gird or dispersion machine.
Preferably, in above-mentioned technical proposal, the feeding sequence of forced mixer stirring includes two methods：A kind of method
Be first thickness is gathered materials, cement and water add blender, after stirring fiber is added again and is stirred；Another kind of method point three
Thickness is first gathered materials and is stirred by step, the first step, and second step adds fiber stirring, is finally added cement and water and is stirred for.
Preferably, in above-mentioned technical proposal, the tamping method of anti-crack concrete consolidated using plug-in type vibrating device or
Vibrated using surface vibrator.
Compared with prior art, the present invention has the advantages that：The construction method on the anti-crack concrete ground passes through
Tensile strength height, the fibre that limit elongation is big, alkali resistance is good are added in the conventional concrete for making base material with cement mortar, mortar
Dimension, surface is smooth, can reduce distress in concrete, increases and decreases the attractive in appearance of mattess, saves the crack of mattess
Maintenance cost, and Forming Quality intensity reaches design requirement.
Description of the drawings
Fig. 1 is the flow chart of the construction method on the anti-crack concrete ground of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings, the specific embodiment of the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by specific embodiment.
Explicitly indicate that unless otherwise other, otherwise in entire disclosure and claims, term " including " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or ingredient, and do not exclude other units
Part or other ingredients.
The construction method on the anti-crack concrete ground of specific embodiment of the invention adding of fiber in concrete
Concrete shrinkage and cracking can be significantly reduced, is improved the deformation performance of concrete and is improved durability, the technology is in building industry
Interior implementation, can effectively increase the service life of mattess, maintenance, the expense rebuild be reduced, so as to save personnel
Expense, and saved society and nature's energy.The limitation of the technology is spread, town road application is developed into, is effectively improved
The service life of road, the construction for substantially increasing motherland is fast-developing.Road construction has great meaning to China's economic development
Justice, Highway investment is big, return rate is high, and what country was valued is the later maintenance expense of excellent quality and low price, however, cracking resistance
The application of concrete construction technology exactly proves this point.The new technique of integration architecture industry, new technology, the technology power of new product
Amount.Improve society construction overall standard, will drive building trade Green Development, produce in the industry larger economy and
Social benefit, can also promote the joint development of the green science of society's building.
As shown in figure 1, the construction method on the anti-crack concrete ground is comprised the following steps：
First, fiber is added to carry out volume in the concrete for making base material with cement mortar, mortar；
The chopped fiber with certain draw ratio (i.e. the ratio of the length of fiber and diameter) is mixed in concrete.But sometimes
Also using long fibre (such as woven glass roving fabric, polypropylene fibrillated film) or fibre (such as fiberglass gridding cloth, glass
Glass fiber felt).Its ultimate tensile intensity can improve 30～50%.
It is to ensure that chopped fiber can be uniformly distributed in concrete, the draw ratio of chopped fiber when mixing chopped fiber in concrete
Not should be greater than 100, generally 30～80.There are the limit value of a maximum doping quantity, the volume fraction of chopped fiber to the fiber of every kind of specification
Design requirement should be met；During design no requirement (NR), choose preferably in the range of 0.05%～0.3%.
Secondly, the concrete mixed with fiber is stirred to form anti-crack concrete；
Anti-crack concrete is stirred using forced mixer, to make fiber can be uniformly dispersed in concrete, should be by shaking
Sieve or dispersion machine charging.The feeding sequence of stirring is slightly different with normal concrete.A kind of method be first thickness is gathered materials, cement
Blender is added with water, after stirring fiber is added again and is stirred.Three steps of another kind of method point, the first step first gathers materials thickness
Stir, second step adds fiber stirring, finally cement and water are added and is stirred for.And should stirring than normal concrete regulation
Time proper extension 40s～60s is mixed, to guarantee that fiber is uniformly dispersed in concrete batching system.
Again, anti-crack concrete is pumped to into operating surface to be consolidated；
Different tamping methods, has a great impact to the orientation of fiber.During using being pumped to operating surface, not inserting and doing,
Fiber wherein in it is three-dimensional disorderly to；Such as consolidated using plug-in type vibrating device, then most of fiber is in three-dimensional random to small part is
It is two-dimentional disorderly to；Vibrated using surface vibrator, then it is most of in two dimension disorderly to, small part for it is three-dimensional disorderly to.
In addition, reducing than normal concrete corresponding requirements mixed with the slump of the anti-crack concrete of fiber.Work as the slump
When being unsatisfactory for requiring, additive is can adjust or the appropriate increase water consumption under conditions of keeping water-cement ratio constant.
Finally, anti-crack concrete is close to initial set when side and is wiped one's face.
Wiping one's face for anti-crack concrete should be smooth, must not add water when wiping one's face, and number of times of wiping one's face should not be excessive.
Mix a little chopped fibers in anti-crack concrete in right amount.It is crack in cement base material under concrete itself endogenetic process
Extension.At load-bearing (the draw, curved) initial stage, chopped fiber plays very big tension and acts on the intensity of bending resistance, and concrete is greatly improved
Toughness.Using anti-crack concrete ground construction technology, can effectively extend mattess service life 1-1.5 times.It is anti-
Concrete is split, when mixing appropriate fiber, inside concrete capillary channel can be blocked, thus reduce the water of concrete exposure
Divide evaporation, greatly reduce plastic crack and desciccation crack, increased the Forming Quality of concrete.The element in construction project
In concrete ground construction, traditional crack resistence measure is the desciccation crack and plasticity that concrete is improved using addition steel fabric sheet
Crack, when such as participating in fiber in concrete, can replace the use of reinforced mesh, reduce the installation fee of reinforced mesh, significantly
Reduce engineering direct cost input.
Compared with normal concrete ground, ground surface thickness can be thinned to more than 1/4 to anti-crack concrete, therefore save former
The entire cost brought after material and reduction quantities；Subtract desciccation crack and bring the material of maintenance, the expense saved such as artificial
With；Anti-crack concrete has the characteristics of performance is superior, maintenance cost is relatively low and service life extends, and can greatly improve comprehensive Jing
Ji benefit.Therefore, the achievement of this project research, industrialization prospect are good, and drive the indirect Jing of other enterprises and relevant industries
Ji increases, with very significant economic benefit.
To sum up, the construction method on the anti-crack concrete ground is by the conventional concrete for making base material with cement mortar, mortar
Middle addition tensile strength is high, the fiber that limit elongation is big, alkali resistance is good, and surface is smooth, can reduce distress in concrete, increases and decreases
Mattess it is attractive in appearance, save the maintenance cost in the crack of mattess, and Forming Quality intensity reaches design requirement.
It is aforementioned to the present invention specific illustrative embodiment description be in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can be much changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles and its reality of the present invention should
With so that those skilled in the art can realize and using the present invention a variety of exemplaries and
A variety of selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (10)
1. a kind of construction method on anti-crack concrete ground, it is characterised in that comprise the following steps：
First, fiber is added to carry out volume in the concrete for making base material with cement mortar, mortar；
Secondly, the concrete mixed with fiber is stirred to form anti-crack concrete；
Again, anti-crack concrete is pumped to into operating surface to be consolidated；
Finally, wiped one's face when anti-crack concrete is close to initial set.
2. the construction method on anti-crack concrete ground according to claim 1, it is characterised in that the fiber is short fibre
Dimension, long fibre or fibre.
3. the construction method on anti-crack concrete ground according to claim 2, it is characterised in that the major diameter of the chopped fiber
Than being not more than 100.
4. the construction method on anti-crack concrete ground according to claim 3, it is characterised in that the major diameter of the chopped fiber
Than for 30～80.
5. the construction method on anti-crack concrete ground according to claim 2, it is characterised in that the long fibre is glass
Fibre untwisted rove or polypropylene fibrillated film.
6. the construction method on anti-crack concrete ground according to claim 2, it is characterised in that the fibre is glass
Glass fibrous mesh cloth or glass mat.
7. the construction method on anti-crack concrete ground according to claim 1, it is characterised in that the anti-crack concrete is adopted
Stirred with forced mixer.
8. the construction method on anti-crack concrete ground according to claim 7, it is characterised in that the forced mixer
Stirring is fed by reciprocating gird or dispersion machine.
9. the construction method on anti-crack concrete ground according to claim 8, it is characterised in that the forced mixer
The feeding sequence of stirring includes two methods：A kind of method be first thickness is gathered materials, cement and water add blender, stir
Afterwards fiber is added again and stirred；Thickness is first gathered materials and is stirred by three steps of another kind of method point, the first step, and second step adds fiber
Stirring, cement and water are finally added be stirred for.
10. the construction method on anti-crack concrete ground according to claim 9, it is characterised in that the anti-crack concrete
Tamping method consolidated using plug-in type vibrating device or vibrated using surface vibrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913128.6A CN106565158A (en) | 2016-10-19 | 2016-10-19 | Construction method of anti-crack concrete ground |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610913128.6A CN106565158A (en) | 2016-10-19 | 2016-10-19 | Construction method of anti-crack concrete ground |
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| CN106565158A true CN106565158A (en) | 2017-04-19 |
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| CN201610913128.6A Pending CN106565158A (en) | 2016-10-19 | 2016-10-19 | Construction method of anti-crack concrete ground |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108787A (en) * | 2010-12-29 | 2011-06-29 | 山西四建集团有限公司 | Construction method of ultra-high strength steel fiber concrete |
| CN102584140A (en) * | 2012-01-19 | 2012-07-18 | 中交上海三航科学研究院有限公司 | Anti-crack concrete for wharf surface layer and preparation method for anti-crack concrete for wharf surface layer |
| CN104909645A (en) * | 2015-05-13 | 2015-09-16 | 玖青新材料科技（上海）有限公司 | High-anti-bending and easy-galling concrete surface layer suitable for airport and construction technology |
-
2016
- 2016-10-19 CN CN201610913128.6A patent/CN106565158A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108787A (en) * | 2010-12-29 | 2011-06-29 | 山西四建集团有限公司 | Construction method of ultra-high strength steel fiber concrete |
| CN102584140A (en) * | 2012-01-19 | 2012-07-18 | 中交上海三航科学研究院有限公司 | Anti-crack concrete for wharf surface layer and preparation method for anti-crack concrete for wharf surface layer |
| CN104909645A (en) * | 2015-05-13 | 2015-09-16 | 玖青新材料科技（上海）有限公司 | High-anti-bending and easy-galling concrete surface layer suitable for airport and construction technology |
Non-Patent Citations (3)
| Title |
|---|
| 《建筑施工手册》第三版编写组: "《建筑施工手册4》", 30 April 1997, 中国建筑工业出版社 * |
| 卜良桃主编: "《土木工程施工》", 31 May 2015, 武汉理工大学出版社 * |
| 李松林主编: "《混凝土设计与施工简明手册》", 31 July 2011, 中国电力出版社 * |
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Application publication date: 20170419 |
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