CN111138149A - Production process of PC (polycarbonate) component - Google Patents
Production process of PC (polycarbonate) component Download PDFInfo
- Publication number
- CN111138149A CN111138149A CN201911380744.XA CN201911380744A CN111138149A CN 111138149 A CN111138149 A CN 111138149A CN 201911380744 A CN201911380744 A CN 201911380744A CN 111138149 A CN111138149 A CN 111138149A
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- Prior art keywords
- mixer
- concrete
- aggregate
- speed
- mixing
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Classifications
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/52—Sound-insulating materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a production process of a PC member, which comprises the following steps of preparing concrete, wherein raw materials for preparing the concrete comprise 5-15% of coarse aggregate, 65-75% of fine aggregate, 5-15% of additive and 10-20% of cement by mass percent, the coarse aggregate, the fine aggregate additive and the cement are added into a stirrer, water is added for stirring to prepare the concrete, a mold is cleaned and assembled, the mold is moved to a production line, a prefabricated part is placed inside the mold to complete preparation of the mold, the prepared concrete is poured into the mold, the concrete is spread out, a concrete block is vibrated to prepare the PC member, the mold is disassembled to complete preparation of the PC member, the structure of the PC member is reasonable, and by adjusting the mass ratio of the raw materials, can prepare PC components with low density, high hardness and good maintenance effect.
Description
Technical Field
The invention relates to the field of PC component manufacturing, in particular to a production process of a PC component.
Background
PC is the english abbreviation of concrete pre-form and is known in the field of housing industrialization as PC component. Such as prefabricated reinforced concrete column foundation, prefabricated steel structure steel column foundation, street lamp billboard column reinforced concrete foundation and prefabricated floor slab. The corresponding traditional cast-in-place concrete needs site moulding, site pouring and site maintenance. The concrete prefabricated member is widely applied to the fields of buildings, traffic, water conservancy and the like, and plays an important role in national economy.
In the production of PC members, in order to enhance the strength thereof, the density of the PC members is often increased, which results in a PC member having a large mass, being difficult to transport, and requiring a larger supporting force in use. In view of the above problems, a solution is proposed as follows.
Disclosure of Invention
The invention aims to provide a production process of a PC member, which has the advantages of low density, low shrinkage, high impact strength, high hardness and easiness in maintenance of the PC member.
The technical purpose of the invention is realized by the following technical scheme:
a production process of a PC component comprises the following steps,
a, preparing concrete, wherein the raw materials for preparing the concrete comprise, by mass, 5% -15% of coarse aggregate, 65% -75% of fine aggregate, 5% -15% of additive and 10% -20% of cement, the coarse aggregate, the fine aggregate additive and the cement are added into a stirrer, water is added for stirring, and the concrete is prepared,
b, preparing a mould, cleaning the mould, assembling, moving to a production line, putting a prefabricated part into the mould to complete the preparation of the mould,
c, pouring and shaping, pouring the prepared concrete into a mould, flattening the concrete, flattening the surface of the concrete by using a tool,
d, compacting by vibration, vibrating the concrete blocks in the initial setting stage of the concrete to enable the concrete blocks to be more compact, then flattening the concrete again to enable the concrete to be naturally hardened and solidified to obtain the PC component,
and E, demolding and forming, gradually detaching the mold to separate the PC component from the mold, placing the PC component into a curing room for curing, and waiting for use to finish the manufacture of the PC component.
Preferably, the coarse aggregate comprises crushed stone and pebble, the crushed stone and the pebble comprise, by mass, 0% -10% of crushed stone and 5% -15% of pebble, the fine aggregate comprises, by mass, lime, sand and steel slag powder, the lime, the sand and the steel slag powder comprise, by mass, 10% -25% of lime, 25% -60% of sand and 5% -15% of steel slag powder, and the coarse aggregate and the fine aggregate are all put into a mixer to be mixed with aggregate, so that the mixed aggregate is prepared.
Preferably, the aggregate mixing includes coarse aggregate mixing, fine aggregate mixing and multiple aggregate mixing, wherein the coarse aggregate mixing includes placing broken stones and pebbles into the same mixer according to a mass ratio respectively, starting the mixer to continuously mix the mixer for 10 minutes under the condition of low-speed operation to prepare coarse mixed aggregate, the fine aggregate mixing includes adding lime and sand into the mixer according to a mass percentage, starting the mixer to continuously mix the mixer for 15 minutes under the condition of low-speed operation to prepare fine mixed aggregate, and the multiple aggregate mixing includes placing the coarse aggregate and the fine aggregate into the same mixer according to a mass ratio, starting the mixer to continuously mix for 20-30 minutes under the condition of high-speed operation to complete the aggregate mixing.
Preferably, the rotation speed of the mixer in low speed operation is 60-120 rpm, and the rotation speed of the mixer in high speed operation is 240-540 rpm.
Preferably, the concrete mixing includes adding the mixed aggregate into a mixer, starting the mixer to make the mixer in a low-speed operation state, adding cement into the mixer according to a mass ratio, adding a certain amount of water into the mixer in the low-speed operation state, increasing the rotation speed of the mixer to make the mixer in a high-speed operation state, continuously mixing for 30-50 minutes, reducing the rotation speed of the mixer, adding the additive into the mixer according to the mass ratio, and making the mixer in a medium-speed operation state for 20-30 minutes, thereby completing the concrete preparation.
Preferably, the additive comprises 5-15% of vitrified micro bubbles and 0-1% of polymer synthetic fiber in percentage by mass.
Preferably, the low-speed rotation speed of the stirrer is 60-120 revolutions per minute, the low-speed rotation speed of the stirrer is 120-240 revolutions per minute, and the low-speed rotation speed of the stirrer is 240-540 revolutions per minute.
By the manufacturing process, the steel slag powder is added into the fine aggregate to improve the strength of the PC component, and the vitrified micro bubbles and the trace polymer synthetic fibers with certain mass are added to improve the overall performance of the PC component, so that the manufactured PC component has the characteristics of low density, low shrinkage, high impact strength, high hardness, strong explosion-proof performance, good heat and sound insulation effect, radiation protection and convenient maintenance.
Detailed Description
The following description is only a preferred embodiment of the present invention, and the protection scope is not limited to the embodiment, and any technical solution that falls under the idea of the present invention should fall within the protection scope of the present invention. It should also be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention.
Example 1 a process for producing a PC member, comprising the steps of,
a, preparing concrete, wherein raw materials for preparing the concrete comprise, by mass, 10% of coarse aggregate, 70% of fine aggregate, 10% of additive and 10% of cement, the coarse aggregate, the fine aggregate additive and the cement are added into a stirrer, water is added for stirring, and the concrete is prepared,
the aggregate mixing comprises coarse aggregate mixing, fine aggregate mixing and multiple aggregate mixing, the rotating speed of the mixer in low-speed operation is 60-120 revolutions per minute, and the rotating speed of the mixer in high-speed operation is 240-540 revolutions per minute.
The coarse aggregate comprises 3% of crushed stone and 7% of pebble in percentage by mass. The mixing of the coarse aggregate comprises the step of respectively putting broken stones and pebbles into the same mixer according to the mass ratio. The mixer was started and continuously mixed for 10 minutes with the mixer running at 80 revolutions per minute to obtain a coarse mixed aggregate.
The fine aggregate comprises 25 percent of lime, 40 percent of sand and 5 percent of steel slag powder by mass. The fine aggregate mixing comprises adding lime and sand into a mixer according to mass percent. The mixer was started and operated at 100 rpm, and the fine mixed aggregate was obtained by continuously mixing for 15 minutes.
Mixing various aggregates comprises putting coarse aggregates and fine aggregates into the same mixer according to the mass ratio. Starting the mixer, and continuously mixing for 20-30 minutes under the condition of 300 revolutions per minute of the mixer to complete the mixing of the aggregate to prepare the mixed aggregate.
The low-speed rotation speed of the stirrer is 60-120 revolutions per minute, the low-speed rotation speed of the stirrer is 120-240 revolutions per minute, and the low-speed rotation speed of the stirrer is 240-540 revolutions per minute.
Concrete mixing involves adding the mixed aggregate to a mixer. Starting the stirrer to enable the stirrer to be in a running state of 100 revolutions per minute, then adding cement into the stirrer according to the mass ratio, and adding a certain amount of water into the stirrer running at a low speed. And accelerating the rotating speed of the stirrer to enable the stirrer to be in a running state of 460 revolutions per minute, and continuously stirring for 30-50 minutes to obtain the concrete raw stock.
The rotating speed of the stirrer is reduced, and additives are added into the stirrer according to the mass ratio, wherein the additives comprise 9% of vitrified micro bubbles and 1% of high-molecular synthetic fibers in percentage by mass. The mixer is in the running state of 200 revolutions per minute, and the operation is carried out for 20 to 30 minutes, thus completing the preparation of the concrete.
B, preparing a mould, cleaning the mould, assembling, moving to a production line, putting a prefabricated part into the mould to complete the preparation of the mould,
c, pouring and shaping, pouring the prepared concrete into a mould, flattening the concrete, flattening the surface of the concrete by using a tool,
d, compacting by vibration, vibrating the concrete blocks in the initial setting stage of the concrete to enable the concrete blocks to be more compact, then flattening the concrete again to enable the concrete to be naturally hardened and solidified to obtain the PC component,
and E, demolding and forming, gradually detaching the mold to separate the PC component from the mold, placing the PC component into a curing room for curing, and waiting for use to finish the manufacture of the PC component.
Example 2 a process for producing a PC member, comprising the steps of,
a, preparing concrete, wherein raw materials for preparing the concrete comprise 8% of coarse aggregate, 62% of fine aggregate, 10% of additive and 20% of cement by mass percent, the coarse aggregate, the fine aggregate additive and the cement are added into a stirrer, water is added for stirring to prepare the concrete,
the aggregate mixing comprises coarse aggregate mixing, fine aggregate mixing and multiple aggregate mixing, the rotating speed of the mixer in low-speed operation is 60-120 revolutions per minute, and the rotating speed of the mixer in high-speed operation is 240-540 revolutions per minute.
The coarse aggregate comprises 3% of crushed stone and 5% of pebble in percentage by mass. The mixing of the coarse aggregate comprises the step of respectively putting broken stones and pebbles into the same mixer according to the mass ratio. The mixer was started and continuously mixed for 10 minutes with the mixer running at 80 revolutions per minute to obtain a coarse mixed aggregate.
The fine aggregate comprises 15 percent of lime, 32 percent of sand and 15 percent of steel slag powder by mass. The fine aggregate mixing comprises adding lime and sand into a mixer according to mass percent. The mixer was started and operated at 100 rpm, and the fine mixed aggregate was obtained by continuously mixing for 15 minutes.
Mixing various aggregates comprises putting coarse aggregates and fine aggregates into the same mixer according to the mass ratio. Starting the mixer, and continuously mixing for 20-30 minutes under the condition of 300 revolutions per minute of the mixer to complete the mixing of the aggregate to prepare the mixed aggregate.
The low-speed rotation speed of the stirrer is 60-120 revolutions per minute, the low-speed rotation speed of the stirrer is 120-240 revolutions per minute, and the low-speed rotation speed of the stirrer is 240-540 revolutions per minute.
Concrete mixing involves adding the mixed aggregate to a mixer. Starting the stirrer to enable the stirrer to be in a running state of 100 revolutions per minute, then adding cement into the stirrer according to the mass ratio, and adding a certain amount of water into the stirrer running at a low speed. And accelerating the rotating speed of the stirrer to enable the stirrer to be in a running state of 460 revolutions per minute, and continuously stirring for 30-50 minutes to obtain the concrete raw stock.
The rotating speed of the stirrer is reduced, and additives are added into the stirrer according to the mass ratio, wherein the additives comprise 10% of vitrified micro bubbles and 0.05% of high-molecular synthetic fibers in percentage by mass. The mixer is in the running state of 200 revolutions per minute, and the operation is carried out for 20 to 30 minutes, thus completing the preparation of the concrete.
B, preparing a mould, cleaning the mould, assembling, moving to a production line, putting a prefabricated part into the mould to complete the preparation of the mould,
c, pouring and shaping, pouring the prepared concrete into a mould, flattening the concrete, flattening the surface of the concrete by using a tool,
d, compacting by vibration, vibrating the concrete blocks in the initial setting stage of the concrete to enable the concrete blocks to be more compact, then flattening the concrete again to enable the concrete to be naturally hardened and solidified to obtain the PC component,
and E, demolding and forming, gradually detaching the mold to separate the PC component from the mold, placing the PC component into a curing room for curing, and waiting for use to finish the manufacture of the PC component.
Claims (7)
1. A production process of a PC component is characterized by comprising the following steps,
a, preparing concrete, wherein the raw materials for preparing the concrete comprise, by mass, 5% -15% of coarse aggregate, 65% -75% of fine aggregate, 5% -15% of additive and 10% -20% of cement, the coarse aggregate, the fine aggregate additive and the cement are added into a stirrer, water is added for stirring, and the concrete is prepared,
b, preparing a mould, cleaning the mould, assembling, moving to a production line, putting a prefabricated part into the mould to complete the preparation of the mould,
c, pouring and shaping, pouring the prepared concrete into a mould, flattening the concrete, flattening the surface of the concrete by using a tool,
d, compacting by vibration, vibrating the concrete blocks in the initial setting stage of the concrete to enable the concrete blocks to be more compact, then flattening the concrete again to enable the concrete to be naturally hardened and solidified to obtain the PC component,
and E, demolding and forming, gradually detaching the mold to separate the PC component from the mold, placing the PC component into a curing room for curing, and waiting for use to finish the manufacture of the PC component.
2. The production process of the PC component according to claim 1, wherein the coarse aggregate comprises 0-10% of broken stone and 5-15% of pebble by mass, and the fine aggregate comprises 10-25% of lime, 25-60% of sand and 5-15% of steel slag powder by mass, and the coarse aggregate and the fine aggregate are all put into a mixer to be mixed with aggregate to prepare the mixed aggregate.
3. The process for producing a PC member according to claim 2, wherein the aggregate mixing comprises coarse aggregate mixing comprising placing crushed stones and pebbles in the same mixer at a mass ratio, respectively, starting the mixer to continuously mix the mixer at a low speed for 10 minutes to produce a coarse mixed aggregate, fine aggregate mixing comprising adding lime and sand in mass percentages to the mixer, starting the mixer to continuously mix the mixer at a low speed for 15 minutes to produce a fine mixed aggregate, and multiple aggregate mixing comprising placing both the coarse aggregate and the fine aggregate at a mass ratio in the same mixer, starting the mixer to continuously mix the mixer at a high speed for 20 to 30 minutes, the mixing of the aggregate is completed.
4. The process for producing a PC component according to claim 3, wherein the mixer is operated at a low speed of 60 to 120 rpm and at a high speed of 240 to 540 rpm.
5. The process for producing a PC component according to claim 4, wherein the concrete mixing comprises adding the mixed aggregate to the mixer, starting the mixer to operate the mixer at a low speed, adding cement to the mixer at a mass ratio, adding a predetermined amount of water to the mixer operating at a low speed, increasing the speed of the mixer to operate the mixer at a high speed, continuing the mixing for 30 to 50 minutes, decreasing the speed of the mixer, adding the additive to the mixer at a mass ratio, and operating the mixer at a medium speed for 20 to 30 minutes to complete the production of the concrete.
6. The production process of the PC component according to claim 5, wherein the additive comprises 5-15% of vitrified micro bubbles and 0-1% of polymer synthetic fibers in percentage by mass.
7. The process for producing a PC component according to claim 6, wherein the low-speed rotation speed of the mixer is 60 to 120 revolutions per minute, the low-speed rotation speed of the mixer is 120 to 240 revolutions per minute, and the low-speed rotation speed of the mixer is 240 to 540 revolutions per minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911380744.XA CN111138149A (en) | 2019-12-27 | 2019-12-27 | Production process of PC (polycarbonate) component |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911380744.XA CN111138149A (en) | 2019-12-27 | 2019-12-27 | Production process of PC (polycarbonate) component |
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| CN111138149A true CN111138149A (en) | 2020-05-12 |
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| CN201911380744.XA Pending CN111138149A (en) | 2019-12-27 | 2019-12-27 | Production process of PC (polycarbonate) component |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000170162A (en) * | 1998-12-10 | 2000-06-20 | High Frequency Heattreat Co Ltd | Viscous material for pc steel bar unit |
| CN108726967A (en) * | 2018-07-20 | 2018-11-02 | 浙江新邦远大绿色建筑产业有限公司 | A kind of production technology of PC components |
| CN110434979A (en) * | 2019-06-24 | 2019-11-12 | 江苏元大建筑科技有限公司 | Three-dimensional expansible bidirectional flexible PC component production technology |
-
2019
- 2019-12-27 CN CN201911380744.XA patent/CN111138149A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000170162A (en) * | 1998-12-10 | 2000-06-20 | High Frequency Heattreat Co Ltd | Viscous material for pc steel bar unit |
| CN108726967A (en) * | 2018-07-20 | 2018-11-02 | 浙江新邦远大绿色建筑产业有限公司 | A kind of production technology of PC components |
| CN110434979A (en) * | 2019-06-24 | 2019-11-12 | 江苏元大建筑科技有限公司 | Three-dimensional expansible bidirectional flexible PC component production technology |
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Application publication date: 20200512 |
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