CN109531775A - A kind of closely knit blanks and moulding and conserving technique of concrete sleeper - Google Patents
A kind of closely knit blanks and moulding and conserving technique of concrete sleeper Download PDFInfo
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- CN109531775A CN109531775A CN201811449040.9A CN201811449040A CN109531775A CN 109531775 A CN109531775 A CN 109531775A CN 201811449040 A CN201811449040 A CN 201811449040A CN 109531775 A CN109531775 A CN 109531775A
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- Prior art keywords
- sleeper
- concrete
- pedestal
- closely knit
- carries out
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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
- C04B28/04—Portland cements
-
- 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
- B28B1/08—Producing shaped prefabricated articles from the material by vibrating or jolting
- B28B1/087—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould
- B28B1/0873—Producing shaped prefabricated articles from the material by vibrating or jolting by means acting on the mould ; Fixation thereof to the mould the mould being placed on vibrating or jolting supports, e.g. moulding tables
-
- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
- B28B13/0215—Feeding the moulding material in measured quantities from a container or silo
- B28B13/026—Feeding the moulding material in measured quantities from a container or silo by using a movable hopper transferring the moulding material to the moulding cavities
-
- 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
- B28B23/04—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 the elements being stressed
-
- 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
- B28B23/04—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 the elements being stressed
- B28B23/043—Wire anchoring or tensioning means for the reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Structural Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a kind of closely knit blanks and moulding and conserving techniques of concrete sleeper, the following steps are included: first the raw material of sleeper concrete are weighed, stirring preparation, then by reinforcement installation on mold, tensioning processing is carried out to reinforcing bar by stretching bed seat, finally by material distributing machine by filling concrete into mold, and the concrete on sleeper mould is made to improve consistency by the pneumatic adhesion high-frequency oscillator of SPV4000, pedestal two sides are arranged in finally by jet chimney, combination temperature sensor regulates and controls heating rate and thermostat temperature, meet the requirement conserved after the closely knit molding of sleeper, this kind of concrete sleeper has carried out important improvement in the perfusion of concrete and concrete densification processing link, ensure the intensity index of sleeper product, the control to technical process is strengthened simultaneously, reduce the waste of material, environmental protection is risen To important function, in addition, the implementation of production technology of the present invention improves processing efficiency and improves the quality of product.
Description
Technical field
Present invention relates particularly to a kind of closely knit blanks and moulding and conserving techniques of concrete sleeper.
Background technique
With the fast development of global economy, construction of the various countries to railway transportation especially builds infrastructure sleeper
If having carried out extensive, in-depth study.The sleeper used on railway at present is mainly by sleeper and concrete sleeper.The bullet of timber
Property and insulating properties it is preferable, influenced by the temperature change of surrounding medium small, processing and on the line replacement are easy, and have enough
Resistance to displacement, but with the enhancing of the reduction of the forest reserves and people's environmental consciousness, some countries start to produce steel sleeper and reinforcing bar
Concrete sleeper, to replace sleeper, to realize environmental protection.
Currently, widely applied railroad sleeper is mostly prestressed reinforced concrete tie, and main raw material have cement, river
Sand, rubble, water develop the prestressed reinforced concrete tie of different performance, make it by reasonably adding admixture, additive
Have high-durability and high compressive strength.The technical process of domestic production prestressed concrete bridge sleeper are as follows: steel wire
Prestressed stretch-draw-ingredient of concrete is stirred, poured-is vibrated-is conserved, wherein the tensioning of steel wire, the ingredient of concrete, stirring,
It the processes such as pours and occupies to pass consequence.But at present people production sleeper in pouring-vibrating the two steps, directly
It connects after being poured concrete, carries out easily vibrating to smooth by bobbing machine just carrying out next processing link, do not focus on coagulation
Soil consistency situation after being cast, the not process detail in strict control concrete construction in preparation process, is caused
Bubbles volume in concrete sleeper is excessive, affects the exterior appearance of concrete sleeper, while also leading to sleeper density obtained
It is low, it is easy to appear fragmentation situation, therefore reduce the compression strength and durability of concrete sleeper.
Summary of the invention
The purpose of the present invention is to solve the shortcomings of the prior art place, a kind of perfusion in concrete and concrete are provided
Fine and close processing link has carried out important improvement, it is ensured that the intensity index of sleeper product, while strengthening the control to technical process
System, reduces the waste of material, to the closely knit blanks and moulding and conserving technique of concrete sleeper that environmental protection plays an important role, in addition, this
The implementation of invention production technology improves processing efficiency and improves the quality of product.
The purpose of the present invention is achieved by the following technical programs.
A kind of closely knit blanks and moulding and conserving technique of concrete sleeper, comprising the following steps:
1, prepared by sleeper concrete, the specific steps are as follows:
A, 42.5 grades of portland cements of raw material of preparation concrete, ZYY early strong mineral admixture, fine sand, blinding, water
With grinding aid HM1002, and the weight of each formula is adjusted by way of weighing, determines that 42.5 grades of portland cements are
48.2%, the early strong mineral admixture of ZYY is 1.8%, fine sand 27.5%, blinding 46%, water are 6.1% and grinding aid
HM1002 is 0.4%, spare；
B, the portland cement of specific steps A preparation is added in forced concrete mixer, and adds ZYY early strong mine
Polymer blends material carries out Stirring 20-40 minutes under conditions of rotation speed is 50r/pm, so that the early strong mineral of ZYY blend
Material is stirred with portland cement, carries out first time stirring and processing, and the first mixture is made, and fine sand and blinding is then added,
Rotation speed carries out Stirring 40-50 minutes under conditions of being 50r/pm, so that fine sand and blinding and the first mixture are mixed
It closes uniformly, carries out second and stir, the second mixture is made, is eventually adding water and grinding aid HM1002, is in rotation speed
Carried out Stirring 60-70 minutes under conditions of 60r/pm so that the second mixture being mixed with water and grinding aid HM1002 and
Concrete is made, it is spare；
2, the Combined machining of sleeper mould, the specific steps are as follows:
A, forming die is placed on TZ-00-00 long-line pedestal unit, the reinforcing bar of φ 5mm is selected to be organized into groups, and will
The reinforcing bar of selection, which passes through, is used for the molding mould bases of sleeper, spare；
B, reinforcing bar both ends are fixed on the stretching bed seat at TZ-00-00 long-line pedestal unit both ends, by pedestal by reinforcing bar
Tensioning processing is carried out, so that reinforced bar stretching is to tightening, it is spare；
3, sleeper machine-shaping, the specific steps are as follows:
A, the concrete that step 1) is stirred is transferred in material distributing machine, by material distributing machine from TZ-00-00 long-line pedestal list
Filling concrete successively, continuously, is equably entered step 3) system to the other end of TZ-00-00 long-line pedestal unit by one end of member
On the sleeper mould obtained, so that concrete fills up sleeper mould, it is spare；
B, after specific steps A perfusion, by using the closely knit moulding process of pneumatic adhesion high-frequency oscillator to sleeper
Concrete carries out closely knit molding, and the vibrator of a unit pedestal is high using the pneumatic adhesion type of a model SPV4000
Frequency vibration device, exciting force 40KN, working frequency 15000RPM, so that the concrete on sleeper mould improves consistency,
Concrete sleeper is made；
4, sleeper maintenance is processed, and specific maintenance method is as follows:
A, jet chimney is arranged in pedestal two sides, while TZ-00-00 long-line pedestal unit surrounding is sealed, four
Sealed cistern is installed on all top, and pedestal steel mold top covers maintenance tarpaulin and carries out steam curing to sleeper, and arranges in every line
Four temperature sensors take control of its temperature averages for heating rate and thermostat temperature；
B, a bite choke is opened in the fixing end of every pedestal, three air-introduced machines is installed in the stretching end of every pedestal, often
Two-lines share an air-introduced machine, cool down for sleeper；The fixing end of every pedestal installs a temperature sensor, for controlling
Rate of temperature fall；The stretching end of every pedestal installs a temperature sensor, for demoulding the control of the temperature difference.
The beneficial effects of the present invention are: first the raw material of sleeper concrete are weighed, stir preparation, then by reinforcing bar
It is mounted on mold, tensioning processing is carried out to reinforcing bar by stretching bed seat, finally by material distributing machine by filling concrete to mold
In, and make the concrete on sleeper mould improve consistency by the pneumatic adhesion high-frequency oscillator of SPV4000, finally by
Jet chimney is arranged in pedestal two sides, and combination temperature sensor regulates and controls heating rate and thermostat temperature, meets the closely knit molding of sleeper
The requirement conserved afterwards, this kind of concrete sleeper have carried out important improvement in the perfusion of concrete and concrete densification processing link,
It ensures the intensity index of sleeper product, while strengthening the control to technical process, the waste of material is reduced, to environmental protection
It plays an important role, in addition, the implementation of production technology of the present invention improves processing efficiency and improves the quality of product.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, to this
Invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
Embodiment 1
A kind of closely knit blanks and moulding and conserving technique of concrete sleeper, comprising the following steps:
1, prepared by sleeper concrete, the specific steps are as follows:
A, 42.5 grades of portland cements of raw material of preparation concrete, ZYY early strong mineral admixture, fine sand, blinding, water
With grinding aid HM1002, and the weight of each formula is adjusted by way of weighing, determines that 42.5 grades of portland cements are
48.2%, the early strong mineral admixture of ZYY is 1.8%, fine sand 27.5%, blinding 46%, water are 6.1% and grinding aid
HM1002 is 0.4%, spare；
B, the portland cement of specific steps A preparation is added in forced concrete mixer, and adds ZYY early strong mine
Polymer blends material carries out Stirring 20 minutes under conditions of rotation speed is 50r/pm so that the early strong mineral admixture of ZYY with
Portland cement stirring, carries out first time stirring and processing, and the first mixture is made, and fine sand and blinding is then added, is rotating
Speed carries out Stirring 40 minutes under conditions of being 50r/pm, so that fine sand and blinding are uniformly mixed with the first mixture,
It carries out second to stir, the second mixture is made, is eventually adding water and grinding aid HM1002, in the item that rotation speed is 60r/pm
It is carried out Stirring 60 minutes under part, so that the second mixture is mixing and is being made concrete with water and grinding aid HM1002, it is standby
With；
2, the Combined machining of sleeper mould, the specific steps are as follows:
A, forming die is placed on TZ-00-00 long-line pedestal unit, the reinforcing bar of φ 5mm is selected to be organized into groups, and will
The reinforcing bar of selection, which passes through, is used for the molding mould bases of sleeper, spare；
B, reinforcing bar both ends are fixed on the stretching bed seat at TZ-00-00 long-line pedestal unit both ends, by pedestal by reinforcing bar
Tensioning processing is carried out, so that reinforced bar stretching is to tightening, it is spare；
3, sleeper machine-shaping, the specific steps are as follows:
A, the concrete that step 1) is stirred is transferred in material distributing machine, by material distributing machine from TZ-00-00 long-line pedestal list
Filling concrete successively, continuously, is equably entered step 3) system to the other end of TZ-00-00 long-line pedestal unit by one end of member
On the sleeper mould obtained, so that concrete fills up sleeper mould, it is spare；
B, after specific steps A perfusion, by using the closely knit moulding process of pneumatic adhesion high-frequency oscillator to sleeper
Concrete carries out closely knit molding, and the vibrator of a unit pedestal is high using the pneumatic adhesion type of a model SPV4000
Frequency vibration device, exciting force 40KN, working frequency 15000RPM, so that the concrete on sleeper mould improves consistency,
Concrete sleeper is made；
4, sleeper maintenance is processed, and specific maintenance method is as follows:
A, jet chimney is arranged in pedestal two sides, while TZ-00-00 long-line pedestal unit surrounding is sealed, four
Sealed cistern is installed on all top, and pedestal steel mold top covers maintenance tarpaulin and carries out steam curing to sleeper, and arranges in every line
Four temperature sensors take control of its temperature averages for heating rate and thermostat temperature；
B, a bite choke is opened in the fixing end of every pedestal, three air-introduced machines is installed in the stretching end of every pedestal, often
Two-lines share an air-introduced machine, cool down for sleeper；The fixing end of every pedestal installs a temperature sensor, for controlling
Rate of temperature fall；The stretching end of every pedestal installs a temperature sensor, for demoulding the control of the temperature difference.
Embodiment 2
A kind of closely knit blanks and moulding and conserving technique of concrete sleeper, it is characterised in that: the following steps are included:
1, prepared by sleeper concrete, the specific steps are as follows:
A, 42.5 grades of portland cements of raw material of preparation concrete, ZYY early strong mineral admixture, fine sand, blinding, water
With grinding aid HM1002, and the weight of each formula is adjusted by way of weighing, determines that 42.5 grades of portland cements are
48.2%, the early strong mineral admixture of ZYY is 1.8%, fine sand 27.5%, blinding 46%, water are 6.1% and grinding aid
HM1002 is 0.4%, spare；
B, the portland cement of specific steps A preparation is added in forced concrete mixer, and adds ZYY early strong mine
Polymer blends material carries out Stirring 40 minutes under conditions of rotation speed is 50r/pm so that the early strong mineral admixture of ZYY with
Portland cement stirring, carries out first time stirring and processing, and the first mixture is made, and fine sand and blinding is then added, is rotating
Speed carries out Stirring 50 minutes under conditions of being 50r/pm, so that fine sand and blinding are uniformly mixed with the first mixture,
It carries out second to stir, the second mixture is made, is eventually adding water and grinding aid HM1002, in the item that rotation speed is 60r/pm
It is carried out Stirring 70 minutes under part, so that the second mixture is mixing and is being made concrete with water and grinding aid HM1002, it is standby
With；
2, the Combined machining of sleeper mould, the specific steps are as follows:
A, forming die is placed on TZ-00-00 long-line pedestal unit, the reinforcing bar of φ 5mm is selected to be organized into groups, and will
The reinforcing bar of selection, which passes through, is used for the molding mould bases of sleeper, spare；
B, reinforcing bar both ends are fixed on the stretching bed seat at TZ-00-00 long-line pedestal unit both ends, by pedestal by reinforcing bar
Tensioning processing is carried out, so that reinforced bar stretching is to tightening, it is spare；
3, sleeper machine-shaping, the specific steps are as follows:
A, the concrete that step 1) is stirred is transferred in material distributing machine, by material distributing machine from TZ-00-00 long-line pedestal list
Filling concrete successively, continuously, is equably entered step 3) system to the other end of TZ-00-00 long-line pedestal unit by one end of member
On the sleeper mould obtained, so that concrete fills up sleeper mould, it is spare；
B, after specific steps A perfusion, by using the closely knit moulding process of pneumatic adhesion high-frequency oscillator to sleeper
Concrete carries out closely knit molding, and the vibrator of a unit pedestal is high using the pneumatic adhesion type of a model SPV4000
Frequency vibration device, exciting force 40KN, working frequency 15000RPM, so that the concrete on sleeper mould improves consistency,
Concrete sleeper is made；
4, sleeper maintenance is processed, and specific maintenance method is as follows:
A, jet chimney is arranged in pedestal two sides, while TZ-00-00 long-line pedestal unit surrounding is sealed, four
Sealed cistern is installed on all top, and pedestal steel mold top covers maintenance tarpaulin and carries out steam curing to sleeper, and arranges in every line
Four temperature sensors take control of its temperature averages for heating rate and thermostat temperature；
B, a bite choke is opened in the fixing end of every pedestal, three air-introduced machines is installed in the stretching end of every pedestal, often
Two-lines share an air-introduced machine, cool down for sleeper；The fixing end of every pedestal installs a temperature sensor, for controlling
Rate of temperature fall；The stretching end of every pedestal installs a temperature sensor, for demoulding the control of the temperature difference.
Embodiment 3
A kind of closely knit blanks and moulding and conserving technique of concrete sleeper, it is characterised in that: the following steps are included:
1, prepared by sleeper concrete, the specific steps are as follows:
A, 42.5 grades of portland cements of raw material of preparation concrete, ZYY early strong mineral admixture, fine sand, blinding, water
With grinding aid HM1002, and the weight of each formula is adjusted by way of weighing, determines that 42.5 grades of portland cements are
48.2%, the early strong mineral admixture of ZYY is 1.8%, fine sand 27.5%, blinding 46%, water are 6.1% and grinding aid
HM1002 is 0.4%, spare；
B, the portland cement of specific steps A preparation is added in forced concrete mixer, and adds ZYY early strong mine
Polymer blends material carries out Stirring 30 minutes under conditions of rotation speed is 50r/pm so that the early strong mineral admixture of ZYY with
Portland cement stirring, carries out first time stirring and processing, and the first mixture is made, and fine sand and blinding is then added, is rotating
Speed carries out Stirring 45 minutes under conditions of being 50r/pm, so that fine sand and blinding are uniformly mixed with the first mixture,
It carries out second to stir, the second mixture is made, is eventually adding water and grinding aid HM1002, in the item that rotation speed is 60r/pm
It is carried out Stirring 65 minutes under part, so that the second mixture is mixing and is being made concrete with water and grinding aid HM1002, it is standby
With；
2, the Combined machining of sleeper mould, the specific steps are as follows:
A, forming die is placed on TZ-00-00 long-line pedestal unit, the reinforcing bar of φ 5mm is selected to be organized into groups, and will
The reinforcing bar of selection, which passes through, is used for the molding mould bases of sleeper, spare；
B, reinforcing bar both ends are fixed on the stretching bed seat at TZ-00-00 long-line pedestal unit both ends, by pedestal by reinforcing bar
Tensioning processing is carried out, so that reinforced bar stretching is to tightening, it is spare；
3, sleeper machine-shaping, the specific steps are as follows:
A, the concrete that step 1) is stirred is transferred in material distributing machine, by material distributing machine from TZ-00-00 long-line pedestal list
Filling concrete successively, continuously, is equably entered step 3) system to the other end of TZ-00-00 long-line pedestal unit by one end of member
On the sleeper mould obtained, so that concrete fills up sleeper mould, it is spare；
B, after specific steps A perfusion, by using the closely knit moulding process of pneumatic adhesion high-frequency oscillator to sleeper
Concrete carries out closely knit molding, and the vibrator of a unit pedestal is high using the pneumatic adhesion type of a model SPV4000
Frequency vibration device, exciting force 40KN, working frequency 15000RPM, so that the concrete on sleeper mould improves consistency,
Concrete sleeper is made；
4, sleeper maintenance is processed, and specific maintenance method is as follows:
A, jet chimney is arranged in pedestal two sides, while TZ-00-00 long-line pedestal unit surrounding is sealed, four
Sealed cistern is installed on all top, and pedestal steel mold top covers maintenance tarpaulin and carries out steam curing to sleeper, and arranges in every line
Four temperature sensors take control of its temperature averages for heating rate and thermostat temperature；
B, a bite choke is opened in the fixing end of every pedestal, three air-introduced machines is installed in the stretching end of every pedestal, often
Two-lines share an air-introduced machine, cool down for sleeper；The fixing end of every pedestal installs a temperature sensor, for controlling
Rate of temperature fall；The stretching end of every pedestal installs a temperature sensor, for demoulding the control of the temperature difference.
Experimental example:
The national standard test mode and test data of sleeper
Experimental subjects: sleeper made from the identical common manufacturing process of volume, sleeper made from special fabrication processes and logical
Cross sleeper made from the technique in present embodiment.
Experimental method: by upper table national regulations and the test mode of routine, then respectively to three groups of rails for test
Pillow carries out compression strength, elasticity modulus, flatness difference and bending strength, and records data.
Following table is the performance test physical record of three groups of sleepers:
In conjunction with upper table, as by sleeper and special process system made from sleeper made from this technique and common manufacturing process
The sleeper obtained compares, it can be seen that sleeper made from this technique is in compression strength, elasticity modulus, flatness difference and bending resistance
It is substantially better than sleeper made from sleeper made from common manufacturing process and special process in intensity, can be defined by integrated testability
Embody that sleeper product quality made from this technique is higher, at the same it is big by the prominent obtained sleeper consistency of this technique, fill
Divide and utilize raw material, reduces waste of material and protection environment.
The beneficial effects of the present invention are: first the raw material of sleeper concrete are weighed, stir preparation, then by reinforcing bar
It is mounted on mold, tensioning processing is carried out to reinforcing bar by stretching bed seat, finally by material distributing machine by filling concrete to mold
In, and make the concrete on sleeper mould improve consistency by the pneumatic adhesion high-frequency oscillator of SPV4000, finally by
Jet chimney is arranged in pedestal two sides, and combination temperature sensor regulates and controls heating rate and thermostat temperature, meets the closely knit molding of sleeper
The requirement conserved afterwards, this kind of concrete sleeper have carried out important improvement in the perfusion of concrete and concrete densification processing link,
It ensures the intensity index of sleeper product, while strengthening the control to technical process, the waste of material is reduced, to environmental protection
It plays an important role, in addition, the implementation of production technology of the present invention improves processing efficiency and improves the quality of product.
Certainly, above is representative instance of the invention, and in addition to this, the present invention can also have other a variety of specific implementations
Mode, all technical solutions formed using equivalent substitution or equivalent transformation, is all fallen within the scope of protection of present invention.
Claims (1)
1. a kind of closely knit blanks and moulding and conserving technique of concrete sleeper, it is characterised in that: the following steps are included:
1, prepared by sleeper concrete, the specific steps are as follows:
A, 42.5 grades of portland cements of raw material, ZYY early mineral admixture, fine sand, blinding, the water by force of concrete are prepared and is helped
Grinding agent HM1002, and the weight of each formula is adjusted by way of weighing, determine that 42.5 grades of portland cements are 48.2%, ZYY
Early strong mineral admixture is 1.8%, fine sand 27.5%, blinding 46%, water are 6.1% and grinding aid HM1002 is 0.4%, standby
With；
B, the portland cement of specific steps A preparation is added in forced concrete mixer, and adds the early strong mineral of ZYY and mixes
Close material, carried out Stirring 20-40 minute under conditions of rotation speed is 50r/pm so that the early strong mineral admixture of ZYY and
Portland cement stirring, carries out first time stirring and processing, and the first mixture is made, and fine sand and blinding is then added, is rotating
Speed carries out Stirring 40-50 minutes under conditions of being 50r/pm, so that fine sand and blinding mix with the first mixture
It is even, it carries out second and stirs, the second mixture is made, is eventually adding water and grinding aid HM1002, be 60r/pm in rotation speed
Under conditions of carry out Stirring 60-70 minutes so that the second mixture mix and be made with water and grinding aid HM1002 it is mixed
Solidifying soil, it is spare；
2, the Combined machining of sleeper mould, the specific steps are as follows:
A, forming die is placed on TZ-00-00 long-line pedestal unit, the reinforcing bar of φ 5mm is selected to be organized into groups, and will selected
Reinforcing bar pass through be used for the molding mould bases of sleeper, it is spare；
B, reinforcing bar both ends are fixed on the stretching bed seat at TZ-00-00 long-line pedestal unit both ends, are carried out reinforcing bar by pedestal
Tensioning processing, so that reinforced bar stretching is to tightening, it is spare；
3, sleeper machine-shaping, the specific steps are as follows:
A, the concrete that step 1) is stirred is transferred in material distributing machine, by material distributing machine from TZ-00-00 long-line pedestal unit
One end successively, continuously, equably enters filling concrete made from step 3) to the other end of TZ-00-00 long-line pedestal unit
On sleeper mould, so that concrete fills up sleeper mould, it is spare；
B, after specific steps A perfusion, by using the closely knit moulding process of pneumatic adhesion high-frequency oscillator to sleeper coagulation
Soil carries out closely knit molding, and the vibrator of a unit pedestal uses the pneumatic adhesion type high frequency vibrating of a model SPV4000
Dynamic device, exciting force 40KN, working frequency 15000RPM are made so that the concrete on sleeper mould improves consistency
Concrete sleeper；
4, sleeper maintenance is processed, and specific maintenance method is as follows:
A, jet chimney is arranged in pedestal two sides, while TZ-00-00 long-line pedestal unit surrounding is sealed, in surrounding
Sealed cistern is installed in portion, and pedestal steel mold top covers maintenance tarpaulin and carries out steam curing to sleeper, and arranges four in every line
Temperature sensor takes control of its temperature averages for heating rate and thermostat temperature；
B, a bite choke is opened in the fixing end of every pedestal, three air-introduced machines is installed in the stretching end of every pedestal, every two
Line shares an air-introduced machine, cools down for sleeper；The fixing end of every pedestal installs a temperature sensor, for controlling cooling
Rate；The stretching end of every pedestal installs a temperature sensor, for demoulding the control of the temperature difference.
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| WO2021023360A1 (en) * | 2019-08-06 | 2021-02-11 | Pawluk Jaroslaw Jerzy | Method for production of concrete precast elements particularly the railway sleepers |
| CN113510835A (en) * | 2021-07-31 | 2021-10-19 | 艾上沭阳新材料科技有限公司 | High-compactness concrete product molding method |
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Application publication date: 20190329 |