CN101274827B - Preparation and casting method for Pearlite sand concrete - Google Patents
Preparation and casting method for Pearlite sand concrete Download PDFInfo
- Publication number
- CN101274827B CN101274827B CN2007100385729A CN200710038572A CN101274827B CN 101274827 B CN101274827 B CN 101274827B CN 2007100385729 A CN2007100385729 A CN 2007100385729A CN 200710038572 A CN200710038572 A CN 200710038572A CN 101274827 B CN101274827 B CN 101274827B
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- China
- Prior art keywords
- concrete
- pearlife
- water
- casting method
- pearlite
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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
- C04B28/02—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
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/28—Fire resistance, i.e. materials resistant to accidental fires or high temperatures
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention relates to a concrete and a preparation and casting method thereof, in particular a method for preparing pearlite-sand concrete, which comprises the following steps that: first, cement and the pearlite-sand in proportion are put into a mixer for mixing 1 to 2 minutes until the cement and the pearlite-sand becoming even, and then part water is added and mixed; an additive and left water are added for mixing 2 to 4 minutes until becoming even, uniform in color, loose in appearance, not falling apart when being grabbed by hand, and non slurry being squeezed out or only small amount of slurry being squeezed out, and when the slump is 3 to 5 cm tested by a slump testing cylinder, the concrete can be used. A method for casting the pearlite-sand concrete is characterized in that: well mixed concrete is poured into a hopper and is needed to be poured immediately and one section after another and one layer after another; the total pouring thickness is 130 percent of the designed thickness and the concrete is slightly tamped to the designed thickness; the concrete is covered by wet grass bags for moisture maintenance; the concreted is dried by air after the moisture maintenance and is covered by a surface protection layer. The concrete of the invention can effectively meet the requirements of heat and cold isolation and freezing prevention, etc. at low temperature and has low construction cost and short construction period.
Description
Technical field
The present invention relates to construction work and use concrete, relate in particular to a kind of concrete and preparation thereof and pouring procedure.
Background technology
Raising along with the industrial production technique of modernization; At present in industries such as metallurgy industry, the industry of system oxygen are built; A lot of projects all are under the low temperature environment and need heat insulation, disconnected cold, the antifreeze and equipment that needs protection; Like the air distillation column foot plinth of oxyen manutactory, steel mill, the oxygen machine of oxyen manutactory basis, the pipeline under the low temperature environment, the disconnected cold layer of equipment etc.In order to achieve the above object; The method that is adopted mainly contains adds admixture, adds deicing fluid in concrete, perhaps directly increase concrete thickness etc. to increase heat transfer distances, the long construction period that these methods have; The needs that have use mechanical one-shift to cause cost high; What have can not construct under precipitation weather, therefore, presses for a kind of new concrete material that can satisfy above-mentioned requirements of exploitation.
Summary of the invention
The present invention is intended to address the above problem, and concrete preparation of a kind of pearlife and pouring procedure are provided.The present invention can effectively satisfy the requirement such as heat insulation, disconnected cold, antifreeze under the low temperature environment, and construction cost is low, short construction period.
The concrete preparation method of a kind of pearlife, it comprises the steps:
At first cement and pearlife are dropped into stirrer in proportion and stirs 1-2 minute to evenly, add the portion water mix then; Mix admixture and remainder water again and stir 2-4 minute to evenly, solid colour, outward appearance be loose, hold and agglomeratingly do not loose, squeeze to go out grout and maybe can only squeeze less water mud, and test slump degree with slump cone and behind 3～5cm, can use.
The concrete preparation method of described pearlife, the ratio of said pearly-lustre sand, cement and water is 1:2-5:1.5-2.5, half of the every total amount of water of twice interpolation in front and back.
The concrete casting method of said pearlife; The concrete that stirs is poured on the hopper planted agent and waters immediately, concrete piecemeal stratified watering, and always watering thickness is 130% of design thickness; Through slightly tamping to design thickness; Cover with wet straw bag immediately and carry out moist maintenance, still need after moist maintenance that it is air-dry to carry out, and then do armor layer.
The concrete casting method of said pearlife, the concrete that stirs was built in 2～2.5 hours.
The concrete casting method of described pearlife, the concrete continuous construction is once watered and is smash completion, does not stay construction joint, and makes firm by ramming with manual work.
The concrete casting method of described pearlife has whenever been built one deck, after concrete surface makes real and stroke hair, has built last one deck, and floating, press polish; If Equipment Foundations surface matcoveredn is then smeared into uneven surface or plucking.
The present invention's pearlife concrete has advantage: the pearlife low price, and material cost can be practiced thrift more than 50% than other constructional method material cost; Easy construction, simple to operate does not need the special work post labor force, can reduce labor cost greatly; The construction machinery less investment does not especially need big machinery, can save the mechanical one-shift cost of use greatly; Duration is short, can shorten the inter process interval; Receive surrounding environment influence less, all can construct during non-the raining; Less to surrounding environment influence, can save expenses such as being used for environment protection, safety construction greatly.
Embodiment
By construction procedure, provide embodiment of the present invention: cement brand is the little wild field P-52.5 in Nanjing at present, and pearlife is the quotient lattice lira board pearlife that Xinyang, Henan Province new for a long time insulation Industrial Co., Ltd produces; The proportioning of pearlife, cement, water is 1:3:2;
Concrete adopts machinery to mix system, and an amount of agitation is 80% of a stirrer capacity.Feeding intake successively, order is: pearlife and cement is even by the proportioning dry mixing, add half the water mix 1 minute then; Mix admixture and remainder water again; It is fully foamed; About 2～3 minutes of churning time; Be stirred to evenly, solid colour, outward appearance are loose, hold and agglomeratingly do not loose, squeeze to go out grout and maybe can only squeeze less water mud and be advisable, and test slump degree with slump cone and behind 3～5cm, can build use.
The concrete that stirs is poured in the hopper and waters in 1 hour, reaches the best effect of building when guaranteeing in the concrete competent bubble to be arranged.When building, concrete is answered the piecemeal pouring, and pouring thickness is generally 130% of design thickness, is advisable through compacting (slightly) to design thickness.
Need not use the vibrator tamping during concrete placement, make firm by ramming with manual work and get final product.Whenever built one deck, smeared with square spade, floating rule or wood at concrete surface and make real and draw hair gently, built last one deck after,, press polish floating with trowel are if Equipment Foundations surface matcoveredn then should be smeared into uneven surface or carry out the plucking processing.
Concrete should be constructed continuously once to water and smash completion, should not stay construction joint.
After the concrete of smashing is treated final set, cover with wet straw bag immediately and carry out moist maintenance, prevent dry crack, be strictly on guard against and expose to the sun and rain.After moist maintenance, still needing, it is air-dry to carry out, and then does armor layer, and air-dry fate is definite through testing according to weather condition.
Claims (5)
1. the concrete preparation method of pearlife is characterized in that it comprises the steps:
At first cement and pearlife are dropped into stirrer in proportion and stirs 1-2 minute to evenly, add the portion water mix then; Mix admixture and remainder water again and stir 2-4 minute to evenly, solid colour, outward appearance be loose, hold and agglomeratingly do not loose, squeeze to go out grout and maybe can only squeeze less water mud, and test the slump with slump cone and behind 3～5cm, use; The ratio of said pearlife, cement and water is 1: 2-5: 1.5-2.5, the water of twice interpolation in front and back respectively are the half the of total amount of water.
2. one kind according to the concrete casting method of the said pearlife of claim 1, it is characterized in that the concrete that stirs is poured on the hopper planted agent and waters immediately; Concrete piecemeal stratified watering; Total pouring thickness is 130% of design thickness, through slightly tamping to design thickness, covers with wet straw bag immediately and carries out moist maintenance; After moist maintenance, still needing, it is air-dry to carry out, and then does armor layer.
3. according to the concrete casting method of the said pearlife of claim 2, it is characterized in that the concrete that stirs was built in 2～2.5 hours.
4. according to claim 2 or the concrete casting method of 3 described pearlifes, it is characterized in that the concrete continuous construction is once watered and smash completion, does not stay construction joint, and makes firm by ramming with manual work.
5. the concrete casting method of pearlife according to claim 4 is characterized in that, has whenever built one deck, after concrete surface makes real and stroke hair, has built last one deck, and floating, press polish; If Equipment Foundations surface matcoveredn is then smeared into uneven surface or plucking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100385729A CN101274827B (en) | 2007-03-28 | 2007-03-28 | Preparation and casting method for Pearlite sand concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100385729A CN101274827B (en) | 2007-03-28 | 2007-03-28 | Preparation and casting method for Pearlite sand concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101274827A CN101274827A (en) | 2008-10-01 |
| CN101274827B true CN101274827B (en) | 2012-05-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100385729A Active CN101274827B (en) | 2007-03-28 | 2007-03-28 | Preparation and casting method for Pearlite sand concrete |
Country Status (1)
| Country | Link |
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| CN (1) | CN101274827B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102060478B (en) * | 2009-11-16 | 2014-02-05 | 中冶天工建设有限公司 | Pearly sand concrete and pumping method thereof |
| CN105418033A (en) * | 2015-12-24 | 2016-03-23 | 邢台建工商品混凝土有限公司 | Pearly sand concrete and preparation process thereof |
| CN106217625B (en) * | 2016-08-08 | 2018-04-13 | 徐州工程学院 | A kind of multi-functional curing means of large-sized reinforced concrete profiled member and its method of work |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034189A (en) * | 1987-09-29 | 1989-07-26 | 清华大学 | The additive and the manufacture method of control concrete slump |
| CN1563601A (en) * | 2004-03-15 | 2005-01-12 | 中国第二十冶金建设公司 | Concrete pipe pile mixed by steel fiber and fabricating method |
-
2007
- 2007-03-28 CN CN2007100385729A patent/CN101274827B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034189A (en) * | 1987-09-29 | 1989-07-26 | 清华大学 | The additive and the manufacture method of control concrete slump |
| CN1563601A (en) * | 2004-03-15 | 2005-01-12 | 中国第二十冶金建设公司 | Concrete pipe pile mixed by steel fiber and fabricating method |
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| Publication number | Publication date |
|---|---|
| CN101274827A (en) | 2008-10-01 |
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| C14 | Grant of patent or utility model | ||
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