CN107337391A - A kind of prefabricated concrete floor - Google Patents
A kind of prefabricated concrete floor Download PDFInfo
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- CN107337391A CN107337391A CN201710587592.5A CN201710587592A CN107337391A CN 107337391 A CN107337391 A CN 107337391A CN 201710587592 A CN201710587592 A CN 201710587592A CN 107337391 A CN107337391 A CN 107337391A
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- section steel
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- concrete floor
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- 239000004567 concrete Substances 0.000 title claims abstract description 132
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 215
- 239000010959 steel Substances 0.000 claims abstract description 215
- 239000000463 material Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 98
- 238000005096 rolling process Methods 0.000 claims description 84
- 239000000843 powder Substances 0.000 claims description 48
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 38
- 238000009749 continuous casting Methods 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 33
- 238000004519 manufacturing process Methods 0.000 claims description 32
- -1 polypropylene Polymers 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 31
- 239000004575 stone Substances 0.000 claims description 28
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 26
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 26
- 239000004743 Polypropylene Substances 0.000 claims description 26
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 26
- 229910021536 Zeolite Inorganic materials 0.000 claims description 26
- 239000002253 acid Substances 0.000 claims description 26
- 239000003638 chemical reducing agent Substances 0.000 claims description 26
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 26
- 239000000835 fiber Substances 0.000 claims description 26
- 239000004571 lime Substances 0.000 claims description 26
- 229920001155 polypropylene Polymers 0.000 claims description 26
- 239000004576 sand Substances 0.000 claims description 26
- 229910052708 sodium Inorganic materials 0.000 claims description 26
- 239000011734 sodium Substances 0.000 claims description 26
- 238000003756 stirring Methods 0.000 claims description 26
- 239000010457 zeolite Substances 0.000 claims description 26
- 239000011505 plaster Substances 0.000 claims description 24
- 239000004113 Sepiolite Substances 0.000 claims description 22
- 239000004568 cement Substances 0.000 claims description 22
- 229910052624 sepiolite Inorganic materials 0.000 claims description 22
- 235000019355 sepiolite Nutrition 0.000 claims description 22
- 229940037003 alum Drugs 0.000 claims description 18
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 17
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 17
- 235000013312 flour Nutrition 0.000 claims description 16
- 238000007670 refining Methods 0.000 claims description 16
- 229910052758 niobium Inorganic materials 0.000 claims description 14
- 239000000126 substance Substances 0.000 claims description 14
- 229910052718 tin Inorganic materials 0.000 claims description 14
- 229910052720 vanadium Inorganic materials 0.000 claims description 14
- 229910052725 zinc Inorganic materials 0.000 claims description 14
- 238000005266 casting Methods 0.000 claims description 13
- 238000003723 Smelting Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 12
- 238000002203 pretreatment Methods 0.000 claims description 12
- 241000372132 Hydrometridae Species 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 6
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 229910052700 potassium Inorganic materials 0.000 description 6
- 239000011591 potassium Substances 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 150000002085 enols Chemical class 0.000 description 3
- 208000029154 Narrow face Diseases 0.000 description 2
- ZXRRHFSTAFVGOC-UHFFFAOYSA-N [AlH3].[K] Chemical compound [AlH3].[K] ZXRRHFSTAFVGOC-UHFFFAOYSA-N 0.000 description 2
- 239000006071 cream Substances 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 238000005275 alloying Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
-
- 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
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
-
- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/22—Moulds for making units for prefabricated buildings, i.e. units each comprising an important section of at least two limiting planes of a room or space, e.g. cells; Moulds for making prefabricated stair units
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
- E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
A kind of prefabricated concrete floor, including multiple longitudinal channel-section steels, two-by-two between channel-section steel backwards to and outward opening set to form a pair of channel-section steels, channel-section steel is provided with backboard and upper plate symmetrical above and below and lower plate, connecting hole is offered on a pair of channel-section steel backboards, through connecting hole, a pair of channel-section steels are attached connector by horizontal cross setting two-by-two, concrete is cast with to form precast slab outside longitudinal channel-section steel, horizontal cross sets and a pair of channel-section steels is attached into paired channel-section steel sheet material strengthened in part connector two-by-two, there is preferable intensity in prefabricated concrete floor X direction, so as to improve prefabricated concrete floor comprehensive strength, also reduce sheet material relative weight, the concrete crushing strength tensile strength of the present invention effectively improves.
Description
Technical field
The present invention relates to a kind of prefabricated concrete floor, belongs to floor technical field.
Background technology
Concrete floor typically has Reinforcement, is distributed inside beam, mostly important most of beam is tension steel
Muscle, reinforcing bar resist hogging moment at the both ends of beam, and reinforcing bar is located at compressive region at the middle part of beam, bears compression stirrup, is square shape
, the reinforcing bar of upper and lower part is fixed up, while resist shearing.Need to be in beam on both sides of the middle by construction when depth of beam is larger
With elongated reinforcing bar, connected using tension rib.But the compression capability in the other direction of floor is poor, beams of concrete sets and is not easy
Weight is excessive, and also to meet intensity requirement.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of prefabricated concrete floor and its manufacture method,
A kind of prefabricated concrete floor, including multiple longitudinal channel-section steels, two-by-two between channel-section steel backwards to and outward opening set to be formed
A pair of channel-section steels, channel-section steel are provided with backboard and upper plate symmetrical above and below and lower plate, connecting hole, connector are offered on a pair of channel-section steel backboards
Through connecting hole, a pair of channel-section steels are attached by horizontal cross setting two-by-two, and it is prefabricated to be formed to be cast with concrete outside longitudinal channel-section steel
Concrete slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.2-0.3%, Zn 4-6%, Ti 2-3%, V 0.5-0.8%, Nb 0.2-0.5%, Mg 0.2-0.4%, Si
0.20-0.40%；Mn 0.05-0.07%；Co 0.04-0.05%, Sn 0.01-0.02wt%；P≤0.02%；S≤
0.01%, surplus Fe；The manufacture method of channel-section steel comprises the following steps：Molten iron pre-treatment, converter smelting, LF refining, RH refinings
Molten steel is obtained, liquid steel temperature is controlled at 1450 DEG C~1500 DEG C, after being incubated 10-15 minutes, is moved in tundish；Then by
Between wrap in molten steel be sent into crystallizer；The wide face water of crystallizer be 3000-4000 liters/min, leptoprosopy water be 450-500 liters/
Minute, crystallizer water speed is 5-6 meter per seconds, and M-EMS Current is controlled in 650-700 amperes, and frequency setting is in 8-10
Hertz, pulling speed of continuous casting is controlled at 3.5-4 ms/min；Continuous casting material is obtained, carrying out roughing-finish rolling to continuous casting material obtains channel-section steel
Blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are 1020-1040 DEG C, and roughing is whole
It is 920-950 DEG C to roll temperature, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, finish rolling start rolling temperature are 1050-
1070 DEG C, finish rolling finishing temperature is 950-970 DEG C, carries out crop to finish rolling part afterwards, rolled parts is aligned afterwards, is aligned
After cut out needed for size and be machined into connecting hole, after multiple longitudinal channel-section steels and connector are fixedly connected, be put into mould
In tool,
Concrete is configured afterwards：Concrete forms including following mass parts：Cement 150-180 parts, zeolite powder 10-15 parts, Hai Pao
Stone flour 10-15 parts, white lime 5-10 parts, desulfurated plaster 10-20 parts, sand 300-320 parts, stone 400-430 parts, polypropylene fibre
20-25 parts, polyvinyl alcohol 5-10 parts, alum 3-6 parts, spongiosa acid sodium 2-3 parts, water reducer 3-5 parts, water 50-80 parts, by water
Mud, zeolite powder, sepiolite powder, white lime and desulfurated plaster are put into grinding 20-30 minutes in flour mill, in 100-120 DEG C of temperature
Lower baking 10-15 minutes；Mixture after baking is added in mixer and adds water, stirs 3-5 minutes, adds sand and stone
Son, continue to stir 5-8 minutes, sequentially add polypropylene fibre afterwards, polyvinyl alcohol, alum, spongiosa acid sodium, water reducer stirs
Mix uniformly, casting concrete is treated in formation, and concreting to be poured is obtained into prefabricated concrete floor to the die for molding.
A kind of described prefabricated concrete floor, connector are connected a pair of channel-section steels by fastener through connecting hole
Connect.
A kind of described prefabricated concrete floor, through connecting hole, horizontal cross sets to enter in a pair of channel-section steels connector two-by-two
Row connection
A kind of described prefabricated concrete floor, the chemical composition of channel-section steel are by weight percentage：C 0.24%, Zn 5%, Ti
2%, V 0.6%, Nb 0.4%, Mg 0.2-0.4%, Si 0.24%；Mn 0.06%；Co 0.05%, Sn 0.01wt%；
P≤0.02%；S≤0.01%, surplus Fe.
A kind of described prefabricated concrete floor, the wide face water of crystallizer be 3800 liters/min, leptoprosopy water be 470 liters/
Minute.
A kind of described prefabricated concrete floor, pulling speed of continuous casting are controlled at 3.5 ms/min.
A kind of described prefabricated concrete floor, concrete form including following mass parts：160 parts of cement, zeolite powder 12
Part, 12 parts of sepiolite powder, 6 parts of white lime, 18 parts of desulfurated plaster, 310 parts of sand, 400 parts of stone, 25 parts of polypropylene fibre, poly- second
8 parts of enol, 6 parts of alum, 2 parts of spongiosa acid sodium, 4 parts of water reducer, 75 parts of water.
A kind of manufacture method of prefabricated concrete floor, prefabricated concrete floor include multiple longitudinal channel-section steels, two-by-two channel-section steel
Between backwards to and outward opening set to form a pair of channel-section steels, channel-section steel is provided with backboard and upper plate symmetrical above and below and lower plate, a pair
Connecting hole is offered on channel-section steel backboard, a pair of channel-section steels are attached connector by horizontal cross setting two-by-two through connecting hole, are indulged
Concrete is cast with to outside channel-section steel to form precast slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.2-0.3%, Zn 4-6%, Ti 2-3%, V 0.5-0.8%, Nb 0.2-0.5%, Mg 0.2-0.4%, Si
0.20-0.40%；Mn 0.05-0.07%；Co 0.04-0.05%, Sn 0.01-0.02wt%；P≤0.02%；S≤
0.01%, surplus Fe；The manufacture method of channel-section steel comprises the following steps：Molten iron pre-treatment, converter smelting, LF refining, RH refinings
Molten steel is obtained, liquid steel temperature is controlled at 1450 DEG C~1500 DEG C, after being incubated 10-15 minutes, is moved in tundish；Then by
Between wrap in molten steel be sent into crystallizer；The wide face water of crystallizer be 3000-4000 liters/min, leptoprosopy water be 450-500 liters/
Minute, crystallizer water speed is 5-6 meter per seconds, and M-EMS Current is controlled in 650-700 amperes, and frequency setting is in 8-10
Hertz, pulling speed of continuous casting is controlled at 3.5-4 ms/min；Continuous casting material is obtained, carrying out roughing-finish rolling to continuous casting material obtains channel-section steel
Blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are 1020-1040 DEG C, and roughing is whole
It is 920-950 DEG C to roll temperature, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, finish rolling start rolling temperature are 1050-
1070 DEG C, finish rolling finishing temperature is 950-970 DEG C, carries out crop to finish rolling part afterwards, rolled parts is aligned afterwards, is aligned
After cut out needed for size and be machined into connecting hole, after multiple longitudinal channel-section steels and connector are fixedly connected, be put into mould
In tool,
Concrete is configured afterwards：Concrete forms including following mass parts：Cement 150-180 parts, zeolite powder 10-15 parts, Hai Pao
Stone flour 10-15 parts, white lime 5-10 parts, desulfurated plaster 10-20 parts, sand 300-320 parts, stone 400-430 parts, polypropylene fibre
20-25 parts, polyvinyl alcohol 5-10 parts, alum 3-6 parts, spongiosa acid sodium 2-3 parts, water reducer 3-5 parts, water 50-80 parts, by water
Mud, zeolite powder, sepiolite powder, white lime and desulfurated plaster are put into grinding 20-30 minutes in flour mill, in 100-120 DEG C of temperature
Lower baking 10-15 minutes；Mixture after baking is added in mixer and adds water, stirs 3-5 minutes, adds sand and stone
Son, continue to stir 5-8 minutes, sequentially add polypropylene fibre afterwards, polyvinyl alcohol, alum, spongiosa acid sodium, water reducer stirs
Mix uniformly, casting concrete is treated in formation, and concreting to be poured is obtained into prefabricated concrete floor to the die for molding.
A kind of manufacture method of described prefabricated concrete floor, connector is through connecting hole by fastener by a pair of grooves
Steel is attached.
Horizontal cross sets and a pair of channel-section steels is attached into paired channel-section steel sheet material strengthened in part connector two-by-two,
There is preferable intensity in prefabricated concrete floor X direction, so as to improve prefabricated concrete floor comprehensive strength, also
Reduce sheet material relative weight, concrete crushing strength tensile strength of the invention effectively improves；Large-span concrete plate is not
It is easily cracked, improve the large-span concrete plate life-span.Steel elemental composition meets channel-section steel intensity and hardness requirement, in casting process
The wide face water of crystallizer, leptoprosopy water are controlled, crystallizer water speed and pulling speed of continuous casting keep the certain anti-blocking of curing rate of steel
Separate out and promote the alloying of addition element, in the operation of rolling using roughing and finish rolling and control breaking down and finishing temperature and
The total coefficient of elongation make it that suppressing crystal grain in steel deformation process becomes thick.
Brief description of the drawings
Fig. 1 is prefabricated concrete floor sectional view,
Fig. 2 is prefabricated concrete floor top view.
Embodiment
A kind of prefabricated concrete floor 1, including multiple longitudinal channel-section steels 2, two-by-two between channel-section steel backwards to and outward opening set
Put to form a pair of channel-section steels, channel-section steel is provided with backboard 3 and upper plate symmetrical above and below 4 and lower plate 5, and connection is offered on a pair of channel-section steel backboards
Hole 6, through connecting hole, a pair of channel-section steels are attached connector 7 by horizontal cross setting two-by-two, and coagulation is cast with outside longitudinal channel-section steel
Soil is to form precast slab, and a pair of channel-section steels are attached by connector through connecting hole by fastener 8, and connecting hole is being carried on the back
Offer multiple rows of on plate and cooperatively form parallel multigroup connector with connector, connector is through connecting hole by fastener by one
Channel-section steel is attached.
Embodiment 1
A kind of prefabricated concrete floor, including multiple longitudinal channel-section steels, two-by-two between channel-section steel backwards to and outward opening set to be formed
A pair of channel-section steels, channel-section steel are provided with backboard and upper plate symmetrical above and below and lower plate, connecting hole, connector are offered on a pair of channel-section steel backboards
Through connecting hole, a pair of channel-section steels are attached by horizontal cross setting two-by-two, and it is prefabricated to be formed to be cast with concrete outside longitudinal channel-section steel
Concrete slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.2%, Zn 4%, Ti 2.5%, V 0.6%, Nb 0.4%, Mg 0.2%, Si 0.2%；Mn 0.05%；
Co 0.045%, Sn 0.01wt%；P≤0.02%；S≤0.01%, surplus Fe；The manufacture method of channel-section steel includes following step
Suddenly：Molten iron pre-treatment, converter smelting, LF refining, RH are refined to obtain molten steel, and liquid steel temperature is controlled at 1470 DEG C, are incubated 10-15
After minute, move in tundish；The molten steel in tundish is then sent into crystallizer；The wide face water of crystallizer is 3500 liters/min
Clock, leptoprosopy water are 470 liters/min, and crystallizer water speed is 5-6 meter per seconds, and M-EMS Current is controlled at 700 amperes,
Frequency setting is controlled at 3.5-4 ms/min in 8-10 hertz, pulling speed of continuous casting；Continuous casting material is obtained, continuous casting material is carried out thick
Roll-finish rolling obtains channel-section steel blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are
1020-1040 DEG C, roughing finishing temperature is 920-950 DEG C, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, essence
Start rolling temperature is rolled for 1050-1070 DEG C, and finish rolling finishing temperature is 950-970 DEG C, crop is carried out to finish rolling part afterwards, afterwards to rolling
Product is aligned, and required size is cut out after aligning and is machined into connecting hole, multiple longitudinal channel-section steels and connector are carried out
After being fixedly connected, it is put into mould,
Concrete is configured afterwards：Concrete forms including following mass parts：160 parts of cement, 12 parts of zeolite powder, sepiolite powder 14
Part, 6 parts of white lime, 18 parts of desulfurated plaster, 300 parts of sand, 410 parts of stone, 20 parts of polypropylene fibre, 8 parts of polyvinyl alcohol, aluminum sulfate
5 parts of potassium, 3 parts of spongiosa acid sodium, 3 parts of water reducer, 70 parts of water, cement, zeolite powder, sepiolite powder, white lime and desulfurated plaster are put
Enter grinding 25 minutes in flour mill, toasted 12 minutes at a temperature of 120 DEG C；Mixture after baking is added in mixer and added
Enter water, stir 3-5 minutes, add sand and stone, continue to stir 5-8 minutes, sequentially add polypropylene fibre, polyethylene afterwards
Alcohol, alum, spongiosa acid sodium, water reducer are stirred, and casting concrete is treated in formation, by concreting to be poured described in
Die for molding obtains prefabricated concrete floor.
A kind of manufacture method of prefabricated concrete floor, prefabricated concrete floor include multiple longitudinal channel-section steels, two-by-two channel-section steel
Between backwards to and outward opening set to form a pair of channel-section steels, channel-section steel is provided with backboard and upper plate symmetrical above and below and lower plate, a pair
Connecting hole is offered on channel-section steel backboard, a pair of channel-section steels are attached connector by horizontal cross setting two-by-two through connecting hole, are indulged
Concrete is cast with to outside channel-section steel to form precast slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.2%, Zn 4%, Ti 2.5%, V 0.6%, Nb 0.4%, Mg 0.2%, Si 0.2%；Mn 0.05%；
Co 0.045%, Sn 0.01wt%；P≤0.02%；S≤0.01%, surplus Fe；The manufacture method of channel-section steel includes following step
Suddenly：Molten iron pre-treatment, converter smelting, LF refining, RH are refined to obtain molten steel, and liquid steel temperature is controlled at 1470 DEG C, are incubated 10-15
After minute, move in tundish；The molten steel in tundish is then sent into crystallizer；The wide face water of crystallizer is 3500 liters/min
Clock, leptoprosopy water are 470 liters/min, and crystallizer water speed is 5-6 meter per seconds, and M-EMS Current is controlled at 700 amperes,
Frequency setting is controlled at 3.5-4 ms/min in 8-10 hertz, pulling speed of continuous casting；Continuous casting material is obtained, continuous casting material is carried out thick
Roll-finish rolling obtains channel-section steel blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are
1020-1040 DEG C, roughing finishing temperature is 920-950 DEG C, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, essence
Start rolling temperature is rolled for 1050-1070 DEG C, and finish rolling finishing temperature is 950-970 DEG C, crop is carried out to finish rolling part afterwards, afterwards to rolling
Product is aligned, and required size is cut out after aligning and is machined into connecting hole, multiple longitudinal channel-section steels and connector are carried out
After being fixedly connected, it is put into mould,
Concrete is configured afterwards：Concrete forms including following mass parts：160 parts of cement, 12 parts of zeolite powder, sepiolite powder 14
Part, 6 parts of white lime, 18 parts of desulfurated plaster, 300 parts of sand, 410 parts of stone, 20 parts of polypropylene fibre, 8 parts of polyvinyl alcohol, aluminum sulfate
5 parts of potassium, 3 parts of spongiosa acid sodium, 3 parts of water reducer, 70 parts of water, cement, zeolite powder, sepiolite powder, white lime and desulfurated plaster are put
Enter grinding 25 minutes in flour mill, toasted 12 minutes at a temperature of 120 DEG C；Mixture after baking is added in mixer and added
Enter water, stir 3-5 minutes, add sand and stone, continue to stir 5-8 minutes, sequentially add polypropylene fibre, polyethylene afterwards
Alcohol, alum, spongiosa acid sodium, water reducer are stirred, and casting concrete is treated in formation, by concreting to be poured described in
Die for molding obtains prefabricated concrete floor.
Embodiment 2
A kind of prefabricated concrete floor, including multiple longitudinal channel-section steels, two-by-two between channel-section steel backwards to and outward opening set to be formed
A pair of channel-section steels, channel-section steel are provided with backboard and upper plate symmetrical above and below and lower plate, connecting hole, connector are offered on a pair of channel-section steel backboards
Through connecting hole, a pair of channel-section steels are attached by horizontal cross setting two-by-two, and it is prefabricated to be formed to be cast with concrete outside longitudinal channel-section steel
Concrete slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.25%, Zn 6%, Ti 2%, V 0.6%, Nb 0.5%, Mg 0.35%, Si 0.35%；Mn 0.07%；
Co 0.04%, Sn 0.02wt%；P≤0.02%；S≤0.01%, surplus Fe；The manufacture method of channel-section steel includes following step
Suddenly：Molten iron pre-treatment, converter smelting, LF refining, RH are refined to obtain molten steel, and liquid steel temperature is controlled at 1480 DEG C, are incubated 10 points
Zhong Hou, move in tundish；The molten steel in tundish is then sent into crystallizer；The wide face water of crystallizer is 3200 liters/min,
Leptoprosopy water is 460 liters/min, and crystallizer water speed is 5-6 meter per seconds, and M-EMS Current control is pacified in 650-700
Training, frequency setting are controlled at 3.5-4 ms/min in 8-10 hertz, pulling speed of continuous casting；Continuous casting material is obtained, continuous casting material is carried out
Roughing-finish rolling obtains channel-section steel blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are
1020-1040 DEG C, roughing finishing temperature is 920-950 DEG C, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, essence
Start rolling temperature is rolled for 1050-1070 DEG C, and finish rolling finishing temperature is 950-970 DEG C, crop is carried out to finish rolling part afterwards, afterwards to rolling
Product is aligned, and required size is cut out after aligning and is machined into connecting hole, multiple longitudinal channel-section steels and connector are carried out
After being fixedly connected, it is put into mould,
Concrete is configured afterwards：Concrete forms including following mass parts：160 parts of cement, 14 parts of zeolite powder, sepiolite powder 15
Part, white lime 5- parts, 10 parts of desulfurated plaster, 300 parts of sand, 420 parts of stone, 22 parts of polypropylene fibre, 8 parts of polyvinyl alcohol, sulfuric acid
3 parts of aluminium potassium, 2.5 parts of spongiosa acid sodium, 3 parts of water reducer, 65 parts of water, by cement, zeolite powder, sepiolite powder, white lime and desulfurization stone
Cream is put into grinding 25 minutes in flour mill, is toasted 15 minutes at a temperature of 120 DEG C；Mixture after baking is added to mixer
Interior addition water, 3-5 minutes are stirred, add sand and stone, continued to stir 5-8 minutes, sequentially add polypropylene fibre, poly- second afterwards
Enol, alum, spongiosa acid sodium, water reducer are stirred, and casting concrete is treated in formation, by concreting to be poured to institute
State die for molding and obtain prefabricated concrete floor.
A kind of manufacture method of prefabricated concrete floor, prefabricated concrete floor include multiple longitudinal channel-section steels, two-by-two channel-section steel
Between backwards to and outward opening set to form a pair of channel-section steels, channel-section steel is provided with backboard and upper plate symmetrical above and below and lower plate, a pair
Connecting hole is offered on channel-section steel backboard, a pair of channel-section steels are attached connector by horizontal cross setting two-by-two through connecting hole, are indulged
Concrete is cast with to outside channel-section steel to form precast slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.25%, Zn 6%, Ti 2%, V 0.6%, Nb 0.5%, Mg 0.35%, Si 0.35%；Mn 0.07%；
Co 0.04%, Sn 0.02wt%；P≤0.02%；S≤0.01%, surplus Fe；The manufacture method of channel-section steel includes following step
Suddenly：Molten iron pre-treatment, converter smelting, LF refining, RH are refined to obtain molten steel, and liquid steel temperature is controlled at 1480 DEG C, are incubated 10 points
Zhong Hou, move in tundish；The molten steel in tundish is then sent into crystallizer；The wide face water of crystallizer is 3200 liters/min,
Leptoprosopy water is 460 liters/min, and crystallizer water speed is 5-6 meter per seconds, and M-EMS Current control is pacified in 650-700
Training, frequency setting are controlled at 3.5-4 ms/min in 8-10 hertz, pulling speed of continuous casting；Continuous casting material is obtained, continuous casting material is carried out
Roughing-finish rolling obtains channel-section steel blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are
1020-1040 DEG C, roughing finishing temperature is 920-950 DEG C, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, essence
Start rolling temperature is rolled for 1050-1070 DEG C, and finish rolling finishing temperature is 950-970 DEG C, crop is carried out to finish rolling part afterwards, afterwards to rolling
Product is aligned, and required size is cut out after aligning and is machined into connecting hole, multiple longitudinal channel-section steels and connector are carried out
After being fixedly connected, it is put into mould,
Concrete is configured afterwards：Concrete forms including following mass parts：160 parts of cement, 14 parts of zeolite powder, sepiolite powder 15
Part, white lime 5- parts, 10 parts of desulfurated plaster, 300 parts of sand, 420 parts of stone, 22 parts of polypropylene fibre, 8 parts of polyvinyl alcohol, sulfuric acid
3 parts of aluminium potassium, 2.5 parts of spongiosa acid sodium, 3 parts of water reducer, 65 parts of water, by cement, zeolite powder, sepiolite powder, white lime and desulfurization stone
Cream is put into grinding 25 minutes in flour mill, is toasted 15 minutes at a temperature of 120 DEG C；Mixture after baking is added to mixer
Interior addition water, 3-5 minutes are stirred, add sand and stone, continued to stir 5-8 minutes, sequentially add polypropylene fibre, poly- second afterwards
Enol, alum, spongiosa acid sodium, water reducer are stirred, and casting concrete is treated in formation, by concreting to be poured to institute
State die for molding and obtain prefabricated concrete floor.
Embodiment 3
A kind of prefabricated concrete floor, including multiple longitudinal channel-section steels, two-by-two between channel-section steel backwards to and outward opening set to be formed
A pair of channel-section steels, channel-section steel are provided with backboard and upper plate symmetrical above and below and lower plate, connecting hole, connector are offered on a pair of channel-section steel backboards
Through connecting hole, a pair of channel-section steels are attached by horizontal cross setting two-by-two, and it is prefabricated to be formed to be cast with concrete outside longitudinal channel-section steel
Concrete slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.3%, Zn 4%, Ti 2%, V 0.5%, Nb 0.5%, Mg 0.3%, Si 0.25%；Mn 0.07%；Co
0.04%, Sn 0.01wt%；P≤0.02%；S≤0.01%, surplus Fe；The manufacture method of channel-section steel comprises the following steps：
Molten iron pre-treatment, converter smelting, LF refining, RH are refined to obtain molten steel, and liquid steel temperature is controlled at 1490 DEG C, are incubated 14 minutes
Afterwards, move in tundish；The molten steel in tundish is then sent into crystallizer；The wide face water of crystallizer is 3900 liters/min, narrow
Face water is 460 liters/min, and crystallizer water speed is 5-6 meter per seconds, and M-EMS Current is controlled in 650-700 amperes,
Frequency setting is controlled at 3.5-4 ms/min in 8-10 hertz, pulling speed of continuous casting；Continuous casting material is obtained, continuous casting material is carried out thick
Roll-finish rolling obtains channel-section steel blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are
1020-1040 DEG C, roughing finishing temperature is 920-950 DEG C, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, essence
Start rolling temperature is rolled for 1050-1070 DEG C, and finish rolling finishing temperature is 950-970 DEG C, crop is carried out to finish rolling part afterwards, afterwards to rolling
Product is aligned, and required size is cut out after aligning and is machined into connecting hole, multiple longitudinal channel-section steels and connector are carried out
After being fixedly connected, it is put into mould,
Concrete is configured afterwards：Concrete forms including following mass parts：180 parts of cement, 14 parts of zeolite powder, sepiolite powder 14
Part, 9 parts of white lime, 20 parts of desulfurated plaster, 320 parts of sand, 430 parts of stone, 25 parts of polypropylene fibre, 9 parts of polyvinyl alcohol, aluminum sulfate
6 parts of potassium, 2.5 parts of spongiosa acid sodium, 4 parts of water reducer, 80 parts of water, by cement, zeolite powder, sepiolite powder, white lime and desulfurated plaster
Grinding 22 minutes in flour mill are put into, are toasted 11 minutes at a temperature of 110 DEG C；Mixture after baking is added in mixer
Water is added, stirs 3-5 minutes, adds sand and stone, continues to stir 5-8 minutes, sequentially adds polypropylene fibre, polyethylene afterwards
Alcohol, alum, spongiosa acid sodium, water reducer are stirred, and casting concrete is treated in formation, by concreting to be poured described in
Die for molding obtains prefabricated concrete floor.
A kind of manufacture method of prefabricated concrete floor, prefabricated concrete floor include multiple longitudinal channel-section steels, two-by-two channel-section steel
Between backwards to and outward opening set to form a pair of channel-section steels, channel-section steel is provided with backboard and upper plate symmetrical above and below and lower plate, a pair
Connecting hole is offered on channel-section steel backboard, a pair of channel-section steels are attached connector by horizontal cross setting two-by-two through connecting hole, are indulged
Concrete is cast with to outside channel-section steel to form precast slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.3%, Zn 4%, Ti 2%, V 0.5%, Nb 0.5%, Mg 0.3%, Si 0.25%；Mn 0.07%；Co
0.04%, Sn 0.01wt%；P≤0.02%；S≤0.01%, surplus Fe；The manufacture method of channel-section steel comprises the following steps：
Molten iron pre-treatment, converter smelting, LF refining, RH are refined to obtain molten steel, and liquid steel temperature is controlled at 1490 DEG C, are incubated 14 minutes
Afterwards, move in tundish；The molten steel in tundish is then sent into crystallizer；The wide face water of crystallizer is 3900 liters/min, narrow
Face water is 460 liters/min, and crystallizer water speed is 5-6 meter per seconds, and M-EMS Current is controlled in 650-700 amperes,
Frequency setting is controlled at 3.5-4 ms/min in 8-10 hertz, pulling speed of continuous casting；Continuous casting material is obtained, continuous casting material is carried out thick
Roll-finish rolling obtains channel-section steel blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are
1020-1040 DEG C, roughing finishing temperature is 920-950 DEG C, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, essence
Start rolling temperature is rolled for 1050-1070 DEG C, and finish rolling finishing temperature is 950-970 DEG C, crop is carried out to finish rolling part afterwards, afterwards to rolling
Product is aligned, and required size is cut out after aligning and is machined into connecting hole, multiple longitudinal channel-section steels and connector are carried out
After being fixedly connected, it is put into mould,
Concrete is configured afterwards：Concrete forms including following mass parts：180 parts of cement, 14 parts of zeolite powder, sepiolite powder 14
Part, 9 parts of white lime, 20 parts of desulfurated plaster, 320 parts of sand, 430 parts of stone, 25 parts of polypropylene fibre, 9 parts of polyvinyl alcohol, aluminum sulfate
6 parts of potassium, 2.5 parts of spongiosa acid sodium, 4 parts of water reducer, 80 parts of water, by cement, zeolite powder, sepiolite powder, white lime and desulfurated plaster
Grinding 22 minutes in flour mill are put into, are toasted 11 minutes at a temperature of 110 DEG C；Mixture after baking is added in mixer
Water is added, stirs 3-5 minutes, adds sand and stone, continues to stir 5-8 minutes, sequentially adds polypropylene fibre, polyethylene afterwards
Alcohol, alum, spongiosa acid sodium, water reducer are stirred, and casting concrete is treated in formation, by concreting to be poured described in
Die for molding obtains prefabricated concrete floor.
Embodiment 4
A kind of prefabricated concrete floor, including multiple longitudinal channel-section steels, two-by-two between channel-section steel backwards to and outward opening set to be formed
A pair of channel-section steels, channel-section steel are provided with backboard and upper plate symmetrical above and below and lower plate, connecting hole, connector are offered on a pair of channel-section steel backboards
Through connecting hole, a pair of channel-section steels are attached by horizontal cross setting two-by-two, and it is prefabricated to be formed to be cast with concrete outside longitudinal channel-section steel
Concrete slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.28%, Zn 5.5%, Ti 2.5%, V 0.8%, Nb 0.4%, Mg 0.3%, Si 0.25%；Mn
0.05%；Co 0.04%, Sn 0.01wt%；P≤0.02%；S≤0.01%, surplus Fe；The manufacture method of channel-section steel includes
Following steps：Molten iron pre-treatment, converter smelting, LF refining, RH are refined to obtain molten steel, and liquid steel temperature is controlled at 1460 DEG C, are protected
After warm 10-15 minutes, move in tundish；The molten steel in tundish is then sent into crystallizer；The wide face water of crystallizer is
3300 liters/min, leptoprosopy water is 480 liters/min, and crystallizer water speed is 5-6 meter per seconds, and M-EMS Current controls
In 650-700 amperes, frequency setting is controlled at 3.5-4 ms/min in 8-10 hertz, pulling speed of continuous casting；Continuous casting material is obtained, to even
Strand material carries out roughing-finish rolling and obtains channel-section steel blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing are opened
Temperature is rolled for 1020-1040 DEG C, and roughing finishing temperature is 920-950 DEG C, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-
3.14, finish rolling start rolling temperature is 1050-1070 DEG C, and finish rolling finishing temperature is 950-970 DEG C, carries out crop to finish rolling part afterwards,
Rolled parts is aligned afterwards, required size is cut out after aligning and is machined into connecting hole, multiple longitudinal channel-section steels and company
After fitting is fixedly connected, it is put into mould,
Concrete is configured afterwards：Concrete forms including following mass parts：170 parts of cement, 13 parts of zeolite powder, sepiolite powder 13
Part, 7 parts of white lime, 12 parts of desulfurated plaster, 320 parts of sand, 420 parts of stone, 22 parts of polypropylene fibre, 9 parts of polyvinyl alcohol, aluminum sulfate
3 parts of potassium, 2 parts of spongiosa acid sodium, 4 parts of water reducer, 70 parts of water, cement, zeolite powder, sepiolite powder, white lime and desulfurated plaster are put
Enter grinding 27 minutes in flour mill, toasted 15 minutes at a temperature of 120 DEG C；Mixture after baking is added in mixer and added
Enter water, stir 3-5 minutes, add sand and stone, continue to stir 5-8 minutes, sequentially add polypropylene fibre, polyethylene afterwards
Alcohol, alum, spongiosa acid sodium, water reducer are stirred, and casting concrete is treated in formation, by concreting to be poured described in
Die for molding obtains prefabricated concrete floor.
A kind of manufacture method of prefabricated concrete floor, prefabricated concrete floor include multiple longitudinal channel-section steels, two-by-two channel-section steel
Between backwards to and outward opening set to form a pair of channel-section steels, channel-section steel is provided with backboard and upper plate symmetrical above and below and lower plate, a pair
Connecting hole is offered on channel-section steel backboard, a pair of channel-section steels are attached connector by horizontal cross setting two-by-two through connecting hole, are indulged
Concrete is cast with to outside channel-section steel to form precast slab,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.28%, Zn 5.5%, Ti 2.5%, V 0.8%, Nb 0.4%, Mg 0.3%, Si 0.25%；Mn
0.05%；Co 0.04%, Sn 0.01wt%；P≤0.02%；S≤0.01%, surplus Fe；The manufacture method of channel-section steel includes
Following steps：Molten iron pre-treatment, converter smelting, LF refining, RH are refined to obtain molten steel, and liquid steel temperature is controlled at 1460 DEG C, are protected
After warm 10-15 minutes, move in tundish；The molten steel in tundish is then sent into crystallizer；The wide face water of crystallizer is
3300 liters/min, leptoprosopy water is 480 liters/min, and crystallizer water speed is 5-6 meter per seconds, and M-EMS Current controls
In 650-700 amperes, frequency setting is controlled at 3.5-4 ms/min in 8-10 hertz, pulling speed of continuous casting；Continuous casting material is obtained, to even
Strand material carries out roughing-finish rolling and obtains channel-section steel blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing are opened
Temperature is rolled for 1020-1040 DEG C, and roughing finishing temperature is 920-950 DEG C, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-
3.14, finish rolling start rolling temperature is 1050-1070 DEG C, and finish rolling finishing temperature is 950-970 DEG C, carries out crop to finish rolling part afterwards,
Rolled parts is aligned afterwards, required size is cut out after aligning and is machined into connecting hole, multiple longitudinal channel-section steels and company
After fitting is fixedly connected, it is put into mould,
Concrete is configured afterwards：Concrete forms including following mass parts：170 parts of cement, 13 parts of zeolite powder, sepiolite powder 13
Part, 7 parts of white lime, 12 parts of desulfurated plaster, 320 parts of sand, 420 parts of stone, 22 parts of polypropylene fibre, 9 parts of polyvinyl alcohol, aluminum sulfate
3 parts of potassium, 2 parts of spongiosa acid sodium, 4 parts of water reducer, 70 parts of water, cement, zeolite powder, sepiolite powder, white lime and desulfurated plaster are put
Enter grinding 27 minutes in flour mill, toasted 15 minutes at a temperature of 120 DEG C；Mixture after baking is added in mixer and added
Enter water, stir 3-5 minutes, add sand and stone, continue to stir 5-8 minutes, sequentially add polypropylene fibre, polyethylene afterwards
Alcohol, alum, spongiosa acid sodium, water reducer are stirred, and casting concrete is treated in formation, by concreting to be poured described in
Die for molding obtains prefabricated concrete floor.
Concrete material the performance test results of the present invention
| Compression strength MPa | Anti- rubbish intensity MPa | Bending strength MPa | Elastic feel quantity | |
| Embodiment 1 | 75 | 14.7 | 17 | 4.62 |
| Embodiment 2 | 76 | 13.9 | 19 | 4.57 |
| Embodiment 3 | 79 | 14.4 | 17 | 4.60 |
| Embodiment 4 | 79 | 14.3 | 18 | 4.65 |
Channel-section steel of the present invention Steel material the performance test results
Claims (9)
1. a kind of prefabricated concrete floor, including multiple longitudinal channel-section steels, two-by-two between channel-section steel backwards to and outward opening shape is set
Channel-section steel in a pair, channel-section steel are provided with backboard and upper plate symmetrical above and below and lower plate, connecting hole are offered on a pair of channel-section steel backboards, connection
Through connecting hole, a pair of channel-section steels are attached part by horizontal cross setting two-by-two, and it is pre- to be formed to be cast with concrete outside longitudinal channel-section steel
Concrete slab processed,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.2-0.3%, Zn 4-6%, Ti 2-3%, V 0.5-0.8%, Nb 0.2-0.5%, Mg 0.2-0.4%, Si
0.20-0.40%；Mn 0.05-0.07%；Co 0.04-0.05%, Sn 0.01-0.02wt%；P≤0.02%；S≤
0.01%, surplus Fe；The manufacture method of channel-section steel comprises the following steps：Molten iron pre-treatment, converter smelting, LF refining, RH refinings
Molten steel is obtained, liquid steel temperature is controlled at 1450 DEG C~1500 DEG C, after being incubated 10-15 minutes, is moved in tundish；Then by
Between wrap in molten steel be sent into crystallizer；The wide face water of crystallizer be 3000-4000 liters/min, leptoprosopy water be 450-500 liters/
Minute, crystallizer water speed is 5-6 meter per seconds, and M-EMS Current is controlled in 650-700 amperes, and frequency setting is in 8-10
Hertz, pulling speed of continuous casting is controlled at 3.5-4 ms/min；Continuous casting material is obtained, carrying out roughing-finish rolling to continuous casting material obtains channel-section steel
Blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are 1020-1040 DEG C, and roughing is whole
It is 920-950 DEG C to roll temperature, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, finish rolling start rolling temperature are 1050-
1070 DEG C, finish rolling finishing temperature is 950-970 DEG C, carries out crop to finish rolling part afterwards, rolled parts is aligned afterwards, is aligned
After cut out needed for size and be machined into connecting hole, after multiple longitudinal channel-section steels and connector are fixedly connected, be put into mould
In tool,
Concrete is configured afterwards：Concrete forms including following mass parts：Cement 150-180 parts, zeolite powder 10-15 parts, Hai Pao
Stone flour 10-15 parts, white lime 5-10 parts, desulfurated plaster 10-20 parts, sand 300-320 parts, stone 400-430 parts, polypropylene fibre
20-25 parts, polyvinyl alcohol 5-10 parts, alum 3-6 parts, spongiosa acid sodium 2-3 parts, water reducer 3-5 parts, water 50-80 parts, by water
Mud, zeolite powder, sepiolite powder, white lime and desulfurated plaster are put into grinding 20-30 minutes in flour mill, in 100-120 DEG C of temperature
Lower baking 10-15 minutes；Mixture after baking is added in mixer and adds water, stirs 3-5 minutes, adds sand and stone
Son, continue to stir 5-8 minutes, sequentially add polypropylene fibre afterwards, polyvinyl alcohol, alum, spongiosa acid sodium, water reducer stirs
Mix uniformly, casting concrete is treated in formation, and concreting to be poured is obtained into prefabricated concrete floor to the die for molding.
2. a kind of prefabricated concrete floor as claimed in claim 1, connector is through connecting hole by fastener by a pair of grooves
Steel is attached.
3. a kind of prefabricated concrete floor as claimed in claim 1, horizontal cross setting will two-by-two through connecting hole for connector
A pair of channel-section steels are attached.
4. a kind of prefabricated concrete floor as claimed in claim 1, the chemical composition of channel-section steel are by weight percentage：C
0.24%, Zn 5%, Ti 2%, V 0.6%, Nb 0.4%, Mg 0.2-0.4%, Si 0.24%；Mn 0.06%；Co
0.05%, Sn 0.01wt%；P≤0.02%；S≤0.01%, surplus Fe.
5. a kind of prefabricated concrete floor as claimed in claim 1, the wide face water of crystallizer is 3800 liters/min, leptoprosopy water
Measure as 470 liters/min.
6. a kind of prefabricated concrete floor as claimed in claim 1, pulling speed of continuous casting are controlled at 3.5 ms/min.
7. a kind of prefabricated concrete floor as claimed in claim 1, concrete form including following mass parts：160 parts of cement,
12 parts of zeolite powder, 12 parts of sepiolite powder, 6 parts of white lime, 18 parts of desulfurated plaster, 310 parts of sand, 400 parts of stone, polypropylene fibre 25
Part, 8 parts of polyvinyl alcohol, 6 parts of alum, 2 parts of spongiosa acid sodium, 4 parts of water reducer, 75 parts of water.
8. a kind of manufacture method of prefabricated concrete floor, prefabricated concrete floor includes multiple longitudinal channel-section steels, two-by-two channel-section steel it
Between backwards to and outward opening set to form a pair of channel-section steels, channel-section steel is provided with backboard and upper plate symmetrical above and below and lower plate, a pair of grooves
Connecting hole is offered on steel backing plate, a pair of channel-section steels are attached connector by horizontal cross setting two-by-two through connecting hole, longitudinal direction
Concrete is cast with to form precast slab outside channel-section steel,
Prefabricated concrete floor manufacture method comprises the following steps：Channel-section steel, the chemical composition percentage by weight of channel-section steel are manufactured first
Than for：C 0.2-0.3%, Zn 4-6%, Ti 2-3%, V 0.5-0.8%, Nb 0.2-0.5%, Mg 0.2-0.4%, Si
0.20-0.40%；Mn 0.05-0.07%；Co 0.04-0.05%, Sn 0.01-0.02wt%；P≤0.02%；S≤
0.01%, surplus Fe；The manufacture method of channel-section steel comprises the following steps：Molten iron pre-treatment, converter smelting, LF refining, RH refinings
Molten steel is obtained, liquid steel temperature is controlled at 1450 DEG C~1500 DEG C, after being incubated 10-15 minutes, is moved in tundish；Then by
Between wrap in molten steel be sent into crystallizer；The wide face water of crystallizer be 3000-4000 liters/min, leptoprosopy water be 450-500 liters/
Minute, crystallizer water speed is 5-6 meter per seconds, and M-EMS Current is controlled in 650-700 amperes, and frequency setting is in 8-10
Hertz, pulling speed of continuous casting is controlled at 3.5-4 ms/min；Continuous casting material is obtained, carrying out roughing-finish rolling to continuous casting material obtains channel-section steel
Blank：Roughing passage：7-10, roughing total coefficient of elongation 8.87-10.32, roughing start rolling temperature are 1020-1040 DEG C, and roughing is whole
It is 920-950 DEG C to roll temperature, finishing pass：4-9, finish rolling total coefficient of elongation 1.47-3.14, finish rolling start rolling temperature are 1050-
1070 DEG C, finish rolling finishing temperature is 950-970 DEG C, carries out crop to finish rolling part afterwards, rolled parts is aligned afterwards, is aligned
After cut out needed for size and be machined into connecting hole, after multiple longitudinal channel-section steels and connector are fixedly connected, be put into mould
In tool,
Concrete is configured afterwards：Concrete forms including following mass parts：Cement 150-180 parts, zeolite powder 10-15 parts, Hai Pao
Stone flour 10-15 parts, white lime 5-10 parts, desulfurated plaster 10-20 parts, sand 300-320 parts, stone 400-430 parts, polypropylene fibre
20-25 parts, polyvinyl alcohol 5-10 parts, alum 3-6 parts, spongiosa acid sodium 2-3 parts, water reducer 3-5 parts, water 50-80 parts, by water
Mud, zeolite powder, sepiolite powder, white lime and desulfurated plaster are put into grinding 20-30 minutes in flour mill, in 100-120 DEG C of temperature
Lower baking 10-15 minutes；Mixture after baking is added in mixer and adds water, stirs 3-5 minutes, adds sand and stone
Son, continue to stir 5-8 minutes, sequentially add polypropylene fibre afterwards, polyvinyl alcohol, alum, spongiosa acid sodium, water reducer stirs
Mix uniformly, casting concrete is treated in formation, and concreting to be poured is obtained into prefabricated concrete floor to the die for molding.
9. a kind of prefabricated concrete floor as claimed in claim 1, connector is through connecting hole by fastener by a pair
Channel-section steel is attached.
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| CN112250375A (en) * | 2020-07-28 | 2021-01-22 | 福州大学 | Desert sand concrete and desert sand concrete combined column |
| US20210221694A1 (en) * | 2020-01-17 | 2021-07-22 | Leonard Tim Sperry, III | Processes for manufacturing a material |
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