EP0490856B1 - Production method for concrete pillar - Google Patents
Production method for concrete pillar Download PDFInfo
- Publication number
- EP0490856B1 EP0490856B1 EP91850311A EP91850311A EP0490856B1 EP 0490856 B1 EP0490856 B1 EP 0490856B1 EP 91850311 A EP91850311 A EP 91850311A EP 91850311 A EP91850311 A EP 91850311A EP 0490856 B1 EP0490856 B1 EP 0490856B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- concrete
- mould
- production method
- pillar
- cut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/12—Structures made of specified materials of concrete or other stone-like material, with or without internal or external reinforcements, e.g. with metal coverings, with permanent form elements
-
- 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
- B28B11/12—Apparatus or processes for treating or working the shaped or preshaped articles for removing parts of the articles by cutting
-
- 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
- B28B11/14—Apparatus or processes for treating or working the shaped or preshaped articles for dividing shaped articles by cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
- B28D1/044—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs the saw blade being movable on slide ways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D7/00—Accessories specially adapted for use with machines or devices of the preceding groups
- B28D7/04—Accessories specially adapted for use with machines or devices of the preceding groups for supporting or holding work or conveying or discharging work
Definitions
- the present invention relates to a method for producing a concrete pillar, in which method the concrete mix is cast in a mould, and after the hardening of the mix, it is cut.
- a related method for producing concrete elements is described, e.g., in the Finnish patent application 2016/69, according to which a cast concrete block is divided by cutting into planar slabs to be used as stepping levels of stairs.
- the GB patent 1,474,717 discloses a grinding method of a ceramic block, whereby said method achieves a ceramic piece with a circular cross section through grinding by different shapes of grinding wheels.
- patent publications as the DE patent 673,520, FI patent 80400 and FI patent application 875752 relate to methods for producing concrete elements, but all of these are based on cutting or processing the concrete mix prior to its hardening.
- the patent application publication DE-3521 199 A1 describes a production method for an element with a circular cross section, in which method a pipe-like shell is cut by sawing from a natural stone block, after which the shell is filled with concrete mix and reinforcing steels.
- the production method according to the invention is characterized by the following combination of work phases: centering elements, such as a full-length hollow pipe, are mounted in the mould; reinforcing steels are optionally placed about the centering element; and - concrete mix is introduced into the mould, the mix is allowed to harden and dry, the concrete pillar element is stripped free from the mould, the concrete pillar element is centered in a cutting unit of the concrete element, the sides of the concrete pillar element are cut by sawing so as to attain a pillar of desired cross section.
- centering elements such as a full-length hollow pipe
- the invention achieves in a straightforward manner a pillar of desired cross section and excellent dimensional accuracy.
- the cutting method by sawing according to the invention completely replaces conventional diamond grinding.
- the cut concrete surface can additionally be ground after cutting by sawing to a high polish if a glossy surface is desired.
- the concrete pillar is cut by sawing to attain a cross section shaped as a square, hexagon, octagon, etc.
- the pillar to be cut by sawing is first rotated about the centered axis to a correct angle and then cut by sawing.
- An embodiment of the invention is characterized in that the concrete pillar is cut by sawing to a conical shape.
- the concrete pillar to be cut by sawing is aligned to an angle with respect to the linear path of the cutting saw.
- Another embodiment of the invention is characterized in that a plurality of adjacently placed centering elements are enclosed by casting in a common mould so that several pillars can be obtained from a single mould by separating the pillars by cutting with a saw from the cast concrete element. This approach can provide significant time savings in the production of concrete pillars.
- a further embodiment of the invention is characterized in that the concrete pillar is processed by cutting with a saw to incorporate grooves for the mounting of wall panel elements. This provides a stable mounting of the wall elements without the use of additional fixing elements.
- another embodiment of the invention is characterized in that the concrete mix is filled with stone aggregates of 30...100 mm diameter, whereby the stones are cut during the cutting phase with a saw thus producing a decorative surface.
- Such a cut stone surface has a unique and attractive appearance.
- a mould 2, 3 is provided with centering elements 4 which can be either full-length hollow pipes or possibly only pipe stubs or shaft pins at the ends of the pillar to be cast.
- the centering element 4 is next surrounded by reinforcing steels 5 comprising bars aligned parallel with the concrete pillar's axis and steel wire wound about the bars.
- Concrete mix 6 is cast in the mould 2, 3 and allowed to harden and dry.
- the concrete element is divided by cutting the concrete pillars separate from each other with a saw. The sawn gaps are indicated by reference number 7.
- the concrete pillar element is next centered in a concrete saw cutting unit 8.
- the concrete pillar element is cut by sawing to attain a desiredly shaped cross section for the pillar.
- a selection of different shapes are illustrated in Figs. 7...11.
- the concrete pillar shown in Fig. 11 is provided with grooves 9 into which wall panel elements can be inserted. If the concrete mix is complemented with stone aggregates of 30...100 mm diameter, an attractive decoration of the pillar surface is obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Wood Science & Technology (AREA)
- Mining & Mineral Resources (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Finishing Walls (AREA)
- Display Devices Of Pinball Game Machines (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
Description
- The present invention relates to a method for producing a concrete pillar, in which method the concrete mix is cast in a mould, and after the hardening of the mix, it is cut.
- A related method for producing concrete elements is described, e.g., in the Finnish patent application 2016/69, according to which a cast concrete block is divided by cutting into planar slabs to be used as stepping levels of stairs. The GB patent 1,474,717 discloses a grinding method of a ceramic block, whereby said method achieves a ceramic piece with a circular cross section through grinding by different shapes of grinding wheels. Also such patent publications as the DE patent 673,520, FI patent 80400 and FI patent application 875752 relate to methods for producing concrete elements, but all of these are based on cutting or processing the concrete mix prior to its hardening. The patent application publication DE-3521 199 A1 describes a production method for an element with a circular cross section, in which method a pipe-like shell is cut by sawing from a natural stone block, after which the shell is filled with concrete mix and reinforcing steels.
- It is an object of the present invention to achieve a novel production method for a concrete pillar. The production method according to the invention is characterized by the following combination of work phases:
centering elements, such as a full-length hollow pipe, are mounted in the mould; reinforcing steels are optionally placed about the centering element; and -
concrete mix is introduced into the mould,
the mix is allowed to harden and dry,
the concrete pillar element is stripped free from the mould,
the concrete pillar element is centered in a cutting unit of the concrete element,
the sides of the concrete pillar element are cut by sawing so as to attain a pillar of desired cross section. - The invention achieves in a straightforward manner a pillar of desired cross section and excellent dimensional accuracy. The cutting method by sawing according to the invention completely replaces conventional diamond grinding. The cut concrete surface can additionally be ground after cutting by sawing to a high polish if a glossy surface is desired. According to an embodiment of the invention, the concrete pillar is cut by sawing to attain a cross section shaped as a square, hexagon, octagon, etc. The pillar to be cut by sawing is first rotated about the centered axis to a correct angle and then cut by sawing.
- An embodiment of the invention is characterized in that the concrete pillar is cut by sawing to a conical shape. For this purpose, the concrete pillar to be cut by sawing is aligned to an angle with respect to the linear path of the cutting saw.
- Another embodiment of the invention is characterized in that a plurality of adjacently placed centering elements are enclosed by casting in a common mould so that several pillars can be obtained from a single mould by separating the pillars by cutting with a saw from the cast concrete element. This approach can provide significant time savings in the production of concrete pillars.
- A further embodiment of the invention is characterized in that the concrete pillar is processed by cutting with a saw to incorporate grooves for the mounting of wall panel elements. This provides a stable mounting of the wall elements without the use of additional fixing elements.
- Further, another embodiment of the invention is characterized in that the concrete mix is filled with stone aggregates of 30...100 mm diameter, whereby the stones are cut during the cutting phase with a saw thus producing a decorative surface. Such a cut stone surface has a unique and attractive appearance.
- In the following, the invention is examined with the help of an exemplifying embodiment by making reference to the attached drawings, in which
- Figure 1 shows the casting mould in a section illustrating the placement of the centering pipe and the reinforcing steels,
- Figure 2 shows the casting mould in a section illustrating the placement of four adjacent centering pipes of concrete pillars with their reinforcing steels,
- Figure 3 shows the same configuration as Fig. 2 after the filling of the mould with the concrete mix and separation of the concrete pillars by cutting with a saw,
- Figure 4 shows the same configuration as Fig. 3 in a top view,
- Figure 5 shows the cutting of a concrete pillar with octagonal cross section,
- Figure 6 shows the saw-type cutting apparatus for the concrete pillars,
- Figure 7 shows the cross section of a square-shaped pillar,
- Figure 8 shows an octagonally cut pillar with a conical shape,
- Figure 9 shows the cross section of square pillar,
- Figure 10 shows the cross section of a cruciform pillar, and
- Figure 11 shows the cross section of a pillar with saw-cut mounting grooves for wall panel elements.
- The production of a
concrete element 1 takes place as follows. Amould 2, 3 is provided with centeringelements 4 which can be either full-length hollow pipes or possibly only pipe stubs or shaft pins at the ends of the pillar to be cast. The centeringelement 4 is next surrounded by reinforcingsteels 5 comprising bars aligned parallel with the concrete pillar's axis and steel wire wound about the bars. Concretemix 6 is cast in themould 2, 3 and allowed to harden and dry. In the embodiment described in Fig. 3, the concrete element is divided by cutting the concrete pillars separate from each other with a saw. The sawn gaps are indicated byreference number 7. The concrete pillar element is next centered in a concretesaw cutting unit 8. Then, the concrete pillar element is cut by sawing to attain a desiredly shaped cross section for the pillar. A selection of different shapes are illustrated in Figs. 7...11. The concrete pillar shown in Fig. 11 is provided withgrooves 9 into which wall panel elements can be inserted. If the concrete mix is complemented with stone aggregates of 30...100 mm diameter, an attractive decoration of the pillar surface is obtained.
Claims (7)
- A production method for a concrete pillar (1) in which method concrete mix (6) is cast into a mould (2, 3), after which the hardened concrete is cut, said production method being characterized by the following combination of work phases:
centering elements (4), such as a full-length hollow pipe, are mounted in said mould (2, 3);
reinforcing steels (5) are optionally placed about the centering element;
concrete mix (6) is introduced into the mould (2, 3), the mix (6) is allowed to harden and dry,
the concrete pillar element is stripped free from the mould,
the concrete pillar element is centered in a saw-type cutting unit (8) for the concrete pillar element, and
the sides of the concrete pillar element are cut by sawing so as to attain a desired cross section for the pillar. - A production method as defined in claim 1, characterized in that said concrete pillar is cut by sawing to attain a cross section shaped as a square (Fig. 7), hexagon, octagon, etc.
- A production method as defined in claim 1 or 2, characterized in that said concrete pillar is cut by sawing to a conical shape.
- A production method as defined in claim 2 or 3, characterized in that a plurality of adjacently placed centering elements (4) are enclosed by casting in a common mould (3) so that several pillars can be obtained from a single mould (3) by separating the pillars (7) from the cast concrete element by cutting with a saw.
- A production method as defined in any of the foregoing claims, characterized in that the concrete pillar (Fig. 11) is cut with a saw to incorporate grooves (9) for the mounting of wall elements.
- A production method as defined in any of the foregoing claims, characterized in that the concrete mix is filled with stone aggregates of 30...100 mm diameter, whereby the stones are cut during the sawing phase thus producing a decorative surface.
- A production method as defined in any of the foregoing claims, characterized in that the surface of the concrete pillar is ground to a high polish after cutting with a saw.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI906117A FI87747C (en) | 1990-12-12 | 1990-12-12 | Preparation process of concrete pillars |
FI906117 | 1990-12-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0490856A1 EP0490856A1 (en) | 1992-06-17 |
EP0490856B1 true EP0490856B1 (en) | 1994-06-22 |
Family
ID=8531560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91850311A Expired - Lifetime EP0490856B1 (en) | 1990-12-12 | 1991-12-11 | Production method for concrete pillar |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0490856B1 (en) |
AT (1) | ATE107565T1 (en) |
DE (1) | DE69102620T2 (en) |
ES (1) | ES2060343T3 (en) |
FI (1) | FI87747C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101713237B (en) * | 2009-11-17 | 2011-06-29 | 中国建筑第八工程局有限公司 | Construction method of large-volume original decorative large pier stud fair-faced concrete |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI166U1 (en) * | 1992-02-21 | 1992-07-15 | Betemi Oy | Framstaellningsanordning Foer betongpelare |
FI109U1 (en) * | 1992-02-21 | 1992-05-22 | Betemi Oy | Gjutform Foer betongpelare eller balk |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2098929A (en) * | 1936-08-11 | 1937-11-09 | George L Barnes | Block or slab molding means and method |
DE819220C (en) * | 1949-07-10 | 1951-10-31 | Schoemo Decken G M B H | Process for the production of hollow brick beams |
EP0327139A3 (en) * | 1985-11-13 | 1990-03-14 | Wolf Systembau Gesellschaft m.b.H. | Device for producing prismatic or truncated pyramidal beams |
FI872244A (en) * | 1987-05-21 | 1988-11-22 | Betemi Oy | FRAMSTAELLNINGSFOERFARANDE FOER BETONGELEMENT. |
FI80400C (en) * | 1988-04-28 | 1990-06-11 | Betemi Oy | Preparation process for concrete pillars or beams |
-
1990
- 1990-12-12 FI FI906117A patent/FI87747C/en not_active IP Right Cessation
-
1991
- 1991-12-11 AT AT91850311T patent/ATE107565T1/en not_active IP Right Cessation
- 1991-12-11 EP EP91850311A patent/EP0490856B1/en not_active Expired - Lifetime
- 1991-12-11 DE DE69102620T patent/DE69102620T2/en not_active Expired - Fee Related
- 1991-12-11 ES ES91850311T patent/ES2060343T3/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101713237B (en) * | 2009-11-17 | 2011-06-29 | 中国建筑第八工程局有限公司 | Construction method of large-volume original decorative large pier stud fair-faced concrete |
Also Published As
Publication number | Publication date |
---|---|
FI87747B (en) | 1992-11-13 |
DE69102620D1 (en) | 1994-07-28 |
DE69102620T2 (en) | 1994-10-06 |
FI906117A (en) | 1992-06-13 |
EP0490856A1 (en) | 1992-06-17 |
ES2060343T3 (en) | 1994-11-16 |
FI906117A0 (en) | 1990-12-12 |
FI87747C (en) | 1993-02-25 |
ATE107565T1 (en) | 1994-07-15 |
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