CN106625998A - Corrosion-resistant concrete prefabricated part for marine ecological engineering and preparation method thereof - Google Patents
Corrosion-resistant concrete prefabricated part for marine ecological engineering and preparation method thereof Download PDFInfo
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- CN106625998A CN106625998A CN201710007567.5A CN201710007567A CN106625998A CN 106625998 A CN106625998 A CN 106625998A CN 201710007567 A CN201710007567 A CN 201710007567A CN 106625998 A CN106625998 A CN 106625998A
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- sea sand
- concrete
- sand
- water
- concrete prefabricated
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/52—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement
- B28B1/525—Producing shaped prefabricated articles from the material specially adapted for producing articles from mixtures containing fibres, e.g. asbestos cement containing organic fibres, e.g. wood fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B17/00—Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
- B28B17/02—Conditioning the material prior to shaping
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
- C04B14/068—Specific natural sands, e.g. sea -, beach -, dune - or desert sand
-
- 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
- C04B20/02—Treatment
-
- 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
- C04B20/02—Treatment
- C04B20/04—Heat treatment
-
- 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
- C04B28/04—Portland cements
Abstract
The invention relates to a corrosion-resistant concrete prefabricated part for marine ecological engineering and a preparation method thereof. The concrete prefabricated part is formed by processing a concrete base material, a fiber enhanced liner material and a steel beam, wherein the adding mass of the fiber enhanced liner material is 3-5% of the concrete base material in volume; the concrete base material per cubic meter is processed by the following raw materials by weight: 300-400kg of silicate cement, 600-800kg of desalted sea sand, 800-1000kg of gravels, 1.2-4kg of a concrete water reducer and a proper amount of water. The concept of the invention provides the corrosion-resistant concrete prefabricated part for marine ecological engineering, wherein the desalted sea sand is taken as a sand material and the fiber enhanced liner material is contained. Different from a conventional concrete prefabricated part, the desalted sea sand is wide in source, materials are easily available, and seawater corrosion resistance of the desalted sea sand is excellent compared with that of river sand or other gravels; and the fiber enhanced liner material is good in toughness, a plurality of micro reinforcing ribs are added into the concrete prefabricated piece equivalently, so that the strength of the concrete material can be greatly improved.
Description
Technical field
The present invention relates to a kind of marine ecology engineering corrosion resistant concrete prefabricated component and preparation method thereof.
Background technology
With the large-scale economic society construction of China, especially sea island ecosystem job facilities construction increases increasingly, existing rank
Section, the facility of common water-proof concrete prefabricated component processing cannot resist the long-time immersion of seawater, corrode, and reduce making for facility
With life-span and using effect.For specific to marine ecology engineering, existing marine ecology engineering concrete facility is due to by sea
Water erosion, is highly vulnerable to breakage, the effect for affecting marine ecology engineering ecology to build.In order to improve marine ecology engineering concrete facility
Service life, effectively resistant to sea water can corrode, need that a kind of feedstock capture is easy to process, adhesive force is strong, with anti-sea water intrusion
The high performance concrete of characteristic, for the processing of seawater marine ecology engineering prefabricated component.
The content of the invention
It is an object of the invention to solve the deficiencies in the prior art, there is provided a kind of marine ecology engineering is pre- with corrosion resistant concrete
Product.
Further object is that providing a kind of preparation side of marine ecology engineering corrosion resistant concrete prefabricated component
Method.
The technical solution adopted for the present invention to solve the technical problems is：
Marine ecology engineering corrosion resistant concrete prefabricated component, the precast concrete is by concrete base-material, fiber reinforcement wadding
Process with steel muscle beam, wherein the addition quality of fiber reinforcement wadding is the 3-5% of concrete binder volume, per 1 cubic metre
Concrete base-material is formed by the Raw material processing of following weight：Portland cement 300-400kg, desalted sea sand 600-800kg, rubble
800-1000kg, cement water reducing agent 1.2-4kg, appropriate amount of water；The preparation method of precast concrete comprises the following steps：
S1：Prepare concrete base-material：
（1）：The volume of default concrete base-material, according to volume each raw material dosage is calculated, and weighs the portland cement of formula ratio, light
Change sea sand and rubble in mixer, first dry stirring is well mixed, then add that suitable quantity of water is wet to stir 20-30min；
（2）：Fiber reinforcement wadding is fully dispersed with suitable quantity of water, it is subsequently adding（1）Middle stirring 30-45min is mended to full and uniform
Water is subsequently adding the water reducer of formula ratio to sufficient volume, is evenly stirred until regulation slump；
S2：Mould is purchased, steel muscle beam is placed in mould；
S3：Cast：By in concrete base-material injection mould obtained in S1；
S4：Precuring：Mould is placed in precuring room after cast, in 60-70 DEG C of precuring 1-2h；
S5：The demoulding, cutting：Mould is sloughed in precuring after terminating, then cut, and obtains precast concrete semi-finished product；
S6：It is steam-cured：The precast concrete semi-finished product that step S5 is obtained are placed in into the steam-cured acquisition concrete of steam-cured indoor constant pressure pre-
Product finished product, the steam-cured indoor steam pressure is 1.2-1.4Mpa, and temperature is 160-180 DEG C, and the constant pressure steam-cured time is 2-
3h。
Preferably, the desalted sea sand is prepared according to the following steps obtaining：
（1）Sea sand pre-sifted：Sea sand is sieved, sea sand of the particle diameter less than 5mm is obtained；
（2）Sea sand purged with fresh water：By step（1）Sea sand with desalinize seawater by quality and volume ratio 2:The ratio mixing of 5-6, plus
Enter appropriate diatomite, in stirring at normal temperature 1-2h is processed；
（3）Separate：By step（2）Sea sand after purified treatment is drained；
（4）Heat treatment：By step（3）The sea sand for draining heats 1-1.5h in 150-160 DEG C, then sieves again, removes
Desalted sea sand finished product is obtained after diatomite.
Preferably, the fiber reinforcement wadding is the nylon yarn of length 30-50mm, or length is the bamboo charcoal of 10-20mm
Fiber.
The present invention's is contemplated that offer one kind adopts desalted sea sand for sand material, the marine ecology work comprising fiber reinforcement wadding
Journey corrosion resistant concrete prefabricated component, it is with traditional precast concrete difference：1st, desalted sea sand wide material sources, take
Material is convenient, and its is congenital by seawater infiltration or flushing, compared with river sand or other sandstone sea water resistance corrosion function admirables；2nd, fiber reinforcement lining
Material has good toughness, equivalent to the reinforcement that some micro- shapes are increased in precast concrete, can greatly improve coagulation
The intensity of native prefabricated component.
Activated carbon has huge specific surface area and abundant three dimensional pore structures, and high-specific surface area is conducive to chlorion
Adsorption storage, for adsorbing the chlorion of sea sand leaching, adsorption effect is splendid, and in follow-up heat treatment process, can also adsorb
The chlorine of heat treatment effusion, it is to avoid air pollution.
Preferably, described desalinizing seawater prepare as follows：
（1）（1）Pretreatment：Nearly seawater is led to cistern, and addition stores the water-insoluble Portugal of seawater cumulative volume 1-1.5% mass
Glycan, stirs, and in normal temperature natural flocculation 3-4h is settled；
The water-insoluble glucan of macromolecule, has functions that to adsorb and flocculates（Frame is produced between coastal seawater pollutant
Bridge function, accelerates pollutant sedimentation）, meanwhile, the composition that flocculates, the pre- place of flocculation can be difficult to Adsorption of Heavy Metals impurity and small molecule
Reason effect is good, easy to operate；
（2）Purification：Step（1）Pretreated coastal seawater pumps into filtration tank, and modified coral sand is filled with the filtration tank
Filler, the filling adsorption purification of pretreated coastal seawater in filter tower, fully removes removing chloride and impurity, obtains sea sand
Desalination water.
Preferably, the processing method of the modified coral sand filler is as follows：
（a）Coral sand is crushed, the coral sand of particle size range 0.4-0.6mm is chosen, with seawater flushing visible foreign is removed, dry standby
With；
（b）Configuration modifying agent, the order mesoporous medium of magnetic and organobentonite are well mixed, plus appropriate purified water stirring is equal
It is even, adjust pH value to 7.2-7.6 with NaOH, obtain modifying agent；
（c）By step（a）Coral sand input step（b）Modifying agent in modification, in stirring at normal temperature infiltrate 4-5 hours,
NaOH maintenance system pH value 7.2-7.6 is added in impregnation process；
（d）Step（c）Coral sand Jing after modification is drained, and after 280-320 DEG C of high-temperature roasting 0.5-1h, is cooled to often
Temperature, i.e., load filtration tank as filler.
Hole in coral sand includes the inner pore of intergranular outer hole and particle itself, porosity 50%.Relatively
For other prefabricated components, coral sand light weight, porous are gathered materials on the spot on island, coral sand is modified and prepares filtrate, are used for
The purification of engineering on an island water, good purification, filtrate low cost finds in present inventor's process of the test, adopts
Natural coral sand can realize a certain degree of purification of seawater, but because coral sand porosity is high and aperture is larger, absorption
The function that impurity is stored after impurity is weak, and impurity is easily again introduced into seawater in filter process, affects clean-up effect, therefore, this Shen
Inventor please is modified to natural coral sand, further to improve adsorption capacity, while substantially improving storage impurity
Ability；
Preferably, in modifying agent the order mesoporous medium of magnetic mass fraction be 0.5-1.2%, bentonite mass fraction
For 0.8-1.6%.
Preferably, the order mesoporous medium of the magnetic is magnetic ordered mesoporous carbon and/or the order mesoporous nickel ferrite based magnetic loaded of magnetic.
Preferably, step（2）In be also added with sodium peroxydisulfate, the addition of sodium peroxydisulfate for sea sand quality 0.3-
0.5%。
Preferably, step（2）In diatomaceous addition be respectively the 2.5-3.0% of sea sand quality.
The invention has the beneficial effects as follows：The present invention adopts desalted sea sand for sand material, comprising fiber reinforcement wadding, itself and tradition
Precast concrete difference be：1st, desalted sea sand wide material sources, draw materials conveniently, and its is congenital by seawater infiltration or punching
Wash, compared with river sand or other sandstone sea water resistance corrosion function admirables；2nd, fiber reinforcement wadding has good toughness, equivalent to mixed
The reinforcement of some micro- shapes is increased in solidifying soil prefabricated component, the intensity of precast concrete can be greatly improved.
Specific embodiment
Below by specific embodiment, technical scheme is described in further detail.
Embodiment 1：
Marine ecology engineering corrosion resistant concrete prefabricated component, the precast concrete is by concrete base-material, fiber reinforcement wadding
Process with steel muscle beam, wherein the addition quality of fiber reinforcement wadding is the 3% of concrete binder volume, mix per 1 cubic metre
Solidifying soil matrix material is formed by the Raw material processing of following weight：Portland cement 300kg, desalted sea sand 600kg, rubble 800kg, coagulation
Native water reducer 1.2kg, appropriate amount of water；The preparation method of precast concrete comprises the following steps：
S1：Prepare concrete base-material：
（1）：The volume of default concrete base-material, according to volume each raw material dosage is calculated, and weighs the portland cement of formula ratio, light
Change sea sand and rubble in mixer, first dry stirring is well mixed, then add that suitable quantity of water is wet to stir 20min；
（2）：Fiber reinforcement wadding is fully dispersed with suitable quantity of water, it is subsequently adding（1）Middle stirring 30min is to full and uniform, moisturizing
To sufficient volume, the water reducer of formula ratio is subsequently adding, is evenly stirred until regulation slump；
S2：Mould is purchased, steel muscle beam is placed in mould；
S3：Cast：By in concrete base-material injection mould obtained in S1；
S4：Precuring：Mould is placed in precuring room after cast, in 60 DEG C of precuring 2h；
S5：The demoulding, cutting：Mould is sloughed in precuring after terminating, then cut, and obtains precast concrete semi-finished product；
S6：It is steam-cured：The precast concrete semi-finished product that step S5 is obtained are placed in into the steam-cured acquisition concrete of steam-cured indoor constant pressure pre-
Product finished product, the steam-cured indoor steam pressure is 1.2Mpa, and temperature is 180 DEG C, and the constant pressure steam-cured time is 2h；
The fiber reinforcement wadding is the nylon yarn of length 30-50mm.
Embodiment 2：
Marine ecology engineering corrosion resistant concrete prefabricated component, the precast concrete is by concrete base-material, fiber reinforcement wadding
Process with steel muscle beam, wherein the addition quality of fiber reinforcement wadding is the 5% of concrete binder volume, mix per 1 cubic metre
Solidifying soil matrix material is formed by the Raw material processing of following weight：Portland cement 400kg, desalted sea sand 800kg, rubble 1000kg, mix
Solidifying soil water reducer 4kg, appropriate amount of water；The preparation method of precast concrete comprises the following steps：
S1：Prepare concrete base-material：
（1）：The volume of default concrete base-material, according to volume each raw material dosage is calculated, and weighs the portland cement of formula ratio, light
Change sea sand and rubble in mixer, first dry stirring is well mixed, then add that suitable quantity of water is wet to stir 30min；
（2）：Fiber reinforcement wadding is fully dispersed with suitable quantity of water, it is subsequently adding（1）Middle stirring 45min is to full and uniform, moisturizing
To sufficient volume, the water reducer of formula ratio is subsequently adding, is evenly stirred until regulation slump；
S2：Mould is purchased, steel muscle beam is placed in mould；
S3：Cast：By in concrete base-material injection mould obtained in S1；
S4：Precuring：Mould is placed in precuring room after cast, in 70 DEG C of precuring 2h；
S5：The demoulding, cutting：Mould is sloughed in precuring after terminating, then cut, and obtains precast concrete semi-finished product；
S6：It is steam-cured：The precast concrete semi-finished product that step S5 is obtained are placed in into the steam-cured acquisition concrete of steam-cured indoor constant pressure pre-
Product finished product, the steam-cured indoor steam pressure is 1.4Mpa, and temperature is 180 DEG C, and the constant pressure steam-cured time is 3h；
The fiber reinforcement wadding is the bamboo-carbon fibre of length 10-20mm.
Embodiment 3：
Marine ecology engineering corrosion resistant concrete prefabricated component, it is characterised in that：The precast concrete is by concrete base-material, fibre
Dimension strengthens wadding and steel muscle beam is processed, and wherein the addition quality of fiber reinforcement wadding is the 4% of concrete binder volume,
Every 1 cubic meter of concrete base-material is formed by the Raw material processing of following weight：Portland cement 350kg, desalted sea sand 700kg, it is broken
900kg, cement water reducing agent 2.5kg, appropriate amount of water；The preparation method of precast concrete comprises the following steps：
S1：Prepare concrete base-material：
（1）：The volume of default concrete base-material, according to volume each raw material dosage is calculated, and weighs the portland cement of formula ratio, light
Change sea sand and rubble in mixer, first dry stirring is well mixed, then add that suitable quantity of water is wet to stir 25min；
（2）：Fiber reinforcement wadding is fully dispersed with suitable quantity of water, it is subsequently adding（1）Middle stirring 40min is to full and uniform, moisturizing
To sufficient volume, the water reducer of formula ratio is subsequently adding, is evenly stirred until regulation slump；
S2：Mould is purchased, steel muscle beam is placed in mould；
S3：Cast：By in concrete base-material injection mould obtained in S1；
S4：Precuring：Mould is placed in precuring room after cast, in 65 DEG C of precuring 1.5h；
S5：The demoulding, cutting：Mould is sloughed in precuring after terminating, then cut, and obtains precast concrete semi-finished product；
S6：It is steam-cured：The precast concrete semi-finished product that step S5 is obtained are placed in into the steam-cured acquisition concrete of steam-cured indoor constant pressure pre-
Product finished product, the steam-cured indoor steam pressure is 1.3Mpa, and temperature is 170 DEG C, and the constant pressure steam-cured time is 2.5h；
The fiber reinforcement wadding is the nylon yarn of length 30-50mm.
Desalted sea sand in embodiment of the present invention 1-3 is prepared according to the following steps obtaining：
（1）Sea sand pre-sifted：Sea sand is sieved, sea sand of the particle diameter less than 5mm is obtained；
（2）Sea sand purged with fresh water：By step（1）Sea sand with desalinize seawater by quality and volume ratio 2:5 ratio mixing, adds
Appropriate diatomite, in stirring at normal temperature 5h is processed；Sodium peroxydisulfate is also added with addition, and the addition of sodium peroxydisulfate is sea sand quality
0.3%, diatomaceous addition is the 2.5% of sea sand quality；
（3）Separate：By step（2）Sea sand after purified treatment is drained；
（4）Heat treatment：By step（3）The sea sand for draining heats 1h in 150 DEG C, then sieves again, after removing diatomite
Obtain desalted sea sand finished product.
Aforementioned used desalinizing seawater prepare as follows：
（1）Pretreatment：Nearly seawater is led to cistern, and addition stores the water-insoluble glucan of the mass of seawater cumulative volume 1%, fills
Divide and stir, in normal temperature natural flocculation 4h is settled；
（2）Purification：Step（1）Pretreated coastal seawater pumps into filtration tank, and modified coral sand is filled with the filtration tank
Filler, the filling adsorption purification of pretreated coastal seawater in filter tower, fully removes removing chloride and impurity, obtains sea sand
Desalination water.
The processing method of the modified coral sand filler adopted in above-mentioned preparation method is as follows：
（a）Coral sand is crushed, the coral sand of particle size range 0.5mm is chosen, with seawater flushing visible foreign is removed, dry standby；
（b）Configuration modifying agent, the order mesoporous medium of magnetic and organobentonite are well mixed, plus appropriate purified water stirring is equal
It is even, adjust pH value to 7.3 with NaOH, obtain modifying agent；
（c）By step（a）Coral sand input step（b）Modifying agent in modification, in stirring at normal temperature infiltrate 4.5 hours,
NaOH maintenance system pH value 7.3 is added in impregnation process；
（d）Step（c）Coral sand Jing after modification is drained, and after 300 DEG C of high-temperature roasting 0.6h, is cooled to normal temperature, that is, make
Filtration tank is loaded for filler.
The mass fraction of the order mesoporous medium of magnetic is for 0.5-1.2% in the modifying agent adopted in aforementioned schemes, organic swelling
The mass fraction of soil is 0.8-1.6%, and the order mesoporous medium of the magnetic is magnetic ordered mesoporous carbon.
The precast concrete of embodiment 1-3 is used for the marine ecology engineering construction in Zhoushan marine site, pours diameter 1m, long
The concrete pillar 3 of degree 3m, contrasts with normal concrete prefabricated component of the prior art, and construction method is the same, construction 12
Compare after individual month observation：There is uneven either large or small lesion on the concrete pillar surface of comparative example, near coagulation
The lesion of soil matrix post bottom is more, and the 3 of experimental example concrete pillar appearances do not see the sign for having erosion, and sea water resistance is invaded
Erosion effect is obvious.Embodiment described above is one kind preferably scheme of the present invention, and any form is not made to the present invention
On restriction, on the premise of without departing from the technical scheme described in claim also have other variants and remodeling.
Claims (9)
1. marine ecology engineering corrosion resistant concrete prefabricated component, it is characterised in that：The precast concrete by concrete base-material,
Fiber reinforcement wadding and steel muscle beam are processed, and wherein the addition quality of fiber reinforcement wadding is the 3- of concrete binder volume
5%, every 1 cubic meter of concrete base-material is formed by the Raw material processing of following weight：Portland cement 300-400kg, desalted sea sand
600-800kg, rubble 800-1000kg, cement water reducing agent 1.2-4kg, appropriate amount of water；The preparation method bag of precast concrete
Include the following steps：
S1：Prepare concrete base-material：
（1）：The volume of default concrete base-material, according to volume each raw material dosage is calculated, and weighs the portland cement of formula ratio, light
Change sea sand and rubble in mixer, first dry stirring is well mixed, then add that suitable quantity of water is wet to stir 20-30min；
（2）：Fiber reinforcement wadding is fully dispersed with suitable quantity of water, it is subsequently adding（1）Middle stirring 30-45min is mended to full and uniform
Water is subsequently adding the water reducer of formula ratio to sufficient volume, is evenly stirred until regulation slump；
S2：Mould is purchased, steel muscle beam is placed in mould；
S3：Cast：By in concrete base-material injection mould obtained in S1；
S4：Precuring：Mould is placed in precuring room after cast, in 60-70 DEG C of precuring 1-2h；
S5：The demoulding, cutting：Mould is sloughed in precuring after terminating, then cut, and obtains precast concrete semi-finished product；
S6：It is steam-cured：The precast concrete semi-finished product that step S5 is obtained are placed in into the steam-cured acquisition concrete of steam-cured indoor constant pressure pre-
Product finished product, the steam-cured indoor steam pressure is 1.2-1.4Mpa, and temperature is 160-180 DEG C, and the constant pressure steam-cured time is 2-
3h。
2. marine ecology engineering corrosion resistant concrete prefabricated component according to claim 1, it is characterised in that：The desalination sea
Sand is prepared according to the following steps obtaining：
（1）Sea sand pre-sifted：Sea sand is sieved, sea sand of the particle diameter less than 5mm is obtained；
（2）Sea sand purged with fresh water：By step（1）Sea sand with desalinize seawater by quality and volume ratio 2:The ratio mixing of 5-6, plus
Enter appropriate diatomite, in stirring at normal temperature 1-2h is processed；
（3）Separate：By step（2）Sea sand after purified treatment is drained；
（4）Heat treatment：By step（3）The sea sand for draining heats 1-1.5h in 150-160 DEG C, then sieves again, removes
Desalted sea sand finished product is obtained after diatomite.
3. marine ecology engineering corrosion resistant concrete prefabricated component according to claim 1, it is characterised in that：The fiber increases
Strong wadding is the nylon yarn of length 30-50mm, or length is the bamboo-carbon fibre of 10-20mm.
4. marine ecology engineering corrosion resistant concrete prefabricated component according to claim 2, it is characterised in that：The desalination sea
Water is prepared as follows：
（1）Pretreatment：Nearly seawater is led to cistern, and addition stores the water-insoluble Portugal of seawater cumulative volume 1-1.5% mass and gathers
Sugar, stirs, and in normal temperature natural flocculation 3-4h is settled；
（2）Purification：Step（1）Pretreated coastal seawater pumps into filtration tank, and modified coral sand is filled with the filtration tank
Filler, the filling adsorption purification of pretreated coastal seawater in filter tower, fully removes removing chloride and impurity, obtains sea sand
Desalination water.
5. marine ecology engineering corrosion resistant concrete prefabricated component according to claim 4, it is characterised in that：The modified coral
The processing method of coral sand filler is as follows：
（a）Coral sand is crushed, the coral sand of particle size range 0.4-0.6mm is chosen, with seawater flushing visible foreign is removed, dry standby
With；
（b）Configuration modifying agent, the order mesoporous medium of magnetic and organobentonite are well mixed, plus appropriate purified water stirring is equal
It is even, adjust pH value to 7.2-7.6 with NaOH, obtain modifying agent；
（c）By step（a）Coral sand input step（b）Modifying agent in modification, in stirring at normal temperature infiltrate 4-5 hours,
NaOH maintenance system pH value 7.2-7.6 is added in impregnation process；
（d）Step（c）Coral sand Jing after modification is drained, and after 280-320 DEG C of high-temperature roasting 0.5-1h, is cooled to often
Temperature, i.e., load filtration tank as filler.
6. marine ecology engineering corrosion resistant concrete prefabricated component according to claim 5, it is characterised in that：Magnetic in modifying agent
Property order mesoporous medium mass fraction be 0.5-1.2%, bentonite mass fraction be 0.8-1.6%.
7. marine ecology engineering corrosion resistant concrete prefabricated component according to claim 6, it is characterised in that：The magnetic has
Sequence Mesoporous media is magnetic ordered mesoporous carbon and/or the order mesoporous nickel ferrite based magnetic loaded of magnetic.
8. marine ecology engineering corrosion resistant concrete prefabricated component according to claim 2, it is characterised in that：Step（2）In
Sodium peroxydisulfate is also added with, the addition of sodium peroxydisulfate is the 0.3-0.5% of sea sand quality.
9. marine ecology engineering corrosion resistant concrete prefabricated component according to claim 2, it is characterised in that：Step（2）In
Diatomaceous addition is respectively the 2.5-3.0% of sea sand quality.
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| CN107140887A (en) * | 2017-05-31 | 2017-09-08 | 福建江夏学院 | A kind of marine environment corrosion resistant high tenacity concrete and preparation method thereof |
| CN108545995A (en) * | 2018-05-04 | 2018-09-18 | 国家海洋局第二海洋研究所 | The method that processing mudflat sludge prepares bionical ecological architectural material |
| CN109956711A (en) * | 2019-04-08 | 2019-07-02 | 河海大学 | A kind of preparation method of high strength anti-corrosion concrete and its prefabricated components |
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| CN101509259A (en) * | 2009-04-03 | 2009-08-19 | 中铁大桥勘测设计院有限公司 | Highly-permanent connection mode for prefabricated pier body and cushion cap of cross-sea bridge |
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| JPH04350257A (en) * | 1991-05-27 | 1992-12-04 | Shimizu Corp | Concrete curing mat and automatic concrete curing device |
| CN101509259A (en) * | 2009-04-03 | 2009-08-19 | 中铁大桥勘测设计院有限公司 | Highly-permanent connection mode for prefabricated pier body and cushion cap of cross-sea bridge |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107140887A (en) * | 2017-05-31 | 2017-09-08 | 福建江夏学院 | A kind of marine environment corrosion resistant high tenacity concrete and preparation method thereof |
| CN108545995A (en) * | 2018-05-04 | 2018-09-18 | 国家海洋局第二海洋研究所 | The method that processing mudflat sludge prepares bionical ecological architectural material |
| CN109956711A (en) * | 2019-04-08 | 2019-07-02 | 河海大学 | A kind of preparation method of high strength anti-corrosion concrete and its prefabricated components |
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