WO2009066002A1 - Protective cover of precast concrete member - Google Patents

Protective cover of precast concrete member Download PDF

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Publication number
WO2009066002A1
WO2009066002A1 PCT/FI2008/050625 FI2008050625W WO2009066002A1 WO 2009066002 A1 WO2009066002 A1 WO 2009066002A1 FI 2008050625 W FI2008050625 W FI 2008050625W WO 2009066002 A1 WO2009066002 A1 WO 2009066002A1
Authority
WO
WIPO (PCT)
Prior art keywords
precast concrete
concrete member
protective cover
plastic part
edge
Prior art date
Application number
PCT/FI2008/050625
Other languages
French (fr)
Inventor
Harriet LEPPÄAHO
Original Assignee
Finnharr Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Finnharr Oy filed Critical Finnharr Oy
Priority to EP08851566.3A priority Critical patent/EP2212489A4/en
Publication of WO2009066002A1 publication Critical patent/WO2009066002A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G21/28—Safety or protective measures preventing damage to building parts or finishing work during construction against unfavourable weather influence
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/66—Sealings
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
    • E04G21/245—Safety or protective measures preventing damage to building parts or finishing work during construction for temporarily protecting wall crowns

Definitions

  • the object of this invention is a protective cover of a precast concrete member, which comprises a plastic part to be installed at least partly on top of the precast concrete member.
  • the invention thus relates to precast concrete members and more particularly to their protection at the factory, during transport and at the worksite before installation. Precast concrete members are exposed to the weather and to abrasion from lifting slings, etc.
  • a precast concrete member can refer to a simple cast concrete element, the thickness of which is typically approx. 15-25 cm, or to a so-called sandwich element, in which an insulating layer is between two precast concrete elements. This invention is not limited to these options or to these dimensions.
  • precast concrete members are most generally protected with a plastic film, which is tightly against the surface of the precast concrete member.
  • a drawback in the use of a tight plastic film is that moisture is not able to evaporate.
  • a thin plastic film does not offer sufficient mechanical protection for the abrasion of hoisting slings and especially of hoisting chains.
  • the precast concrete member are easily chipped on their corners. For example, an installed balcony wall member chips easily on is upper edge when construction waste is tipped out of the building with wheelbarrows. There are numerous other situations also in which a precast concrete member is easily damaged.
  • the purpose of the invention is to achieve a protective cover of a precast concrete member, to which the aforementioned drawbacks are not attached.
  • the protective cover of a precast concrete member according to the invention is characterized in that the plastic part is essentially U-shaped and elongated, and in that it can be installed on top of the edge, more particularly on top of the top edge, of the precast concrete member essentially on the whole length of the edge such that the base of the U sits above the edge and the flanks of the U immediately against the sides of the member.
  • One preferred embodiment of the protective cover of a precast concrete member according to the invention is characterized in that inclined or straight protrusions are formed on the inside surface of the shanks of the essentially U- shaped plastic part, the tips of which are against the side surface of the precast concrete member, in which case ventilation channels remain between the protrusions.
  • Another preferred embodiment of the protective cover of a precast concrete member according to the invention is characterized in that the base of the U- shaped plastic part is formed to be at least partly corrugated in its cross-section, in which case it can be fitted to precast concrete members of different thicknesses.
  • Yet another preferred embodiment of the protective cover of a precast concrete member according to the invention which comprises two concrete layers and the insulating layer between them, is characterized in that a U-shaped plastic part is installed on top of the top edge of both concrete layers, and in that a protective film or protective paper or similar is fixed between these plastic parts to protect the insulating layer.
  • the protective cover is appreciably more durable than earlier and thus offers better protection. In addition, its installation is extremely easy. Since the protective cover according to the invention is ventilated, the precast concrete member does not become wet. Another advantage that can be mentioned is that the protective cover can easily be re-used.
  • Fig. 1 presents a partially sectioned view of the top part of a simple precast concrete member and the protective cover installed on top of it.
  • Fig. 2 presents a partially sectioned view of the top part of a sandwich-structure precast concrete member and the protective cover installed on top of it.
  • Fig. 1 thus presents a simple precast concrete member 1 and the elongated, plastic protective cover 2 installed on top of it.
  • the top edge of the precast concrete member is presented in the drawings, but the other edges of the member can be just as well protected with the protective cover 2 according to the invention.
  • the protective cover 2 is preferably a plastic profile that essentially retains its shape, which can be manufactured from solid plastic or similar, and the length of which can be e.g. approx. 60-600 cm, but other dimensions are possible depending on the dimensions of the precast concrete member. The length can e.g. be fitted according to the wishes of the customer, according to the lifting lugs of the member, etc.
  • the plastic protective profile 2 functions during transportation as a protection against, among other things, the abrasion of chains and slings and also as collision protection during, among other things, transportation and lifting. In addition it functions as a ventilating weather protector during transportation from the factory, storage and construction before the final weather protection provided by the building.
  • the protective cover is, of course, removed before any finishing work, but it can be used again, which is an advantage compared to the current solution.
  • the protective cover 2 is thus a plastic profile, in which is a base 2' and shanks 2", that is U-shaped in its cross-section. In its static state the shanks 2" approach each other. When installing the protective cover on top of the precast concrete member, the shanks must thus be spread slightly apart. This produces compressive friction against the sides of the precast concrete member, in which case the protective cover stays in its position better.
  • the shape of the protective cover reinforces it and improves its grip on the member.
  • the base 2' of the protective cover is made to be at least partly corrugated, in which case it stretches if necessary if the precast concrete member is thicker.
  • these types of precast concrete members are 15-25 cm thick and the same protective cover can, as a result of the base solution according to the invention, be used for these concrete thicknesses.
  • Protrusions 3 are formed essentially on the whole length of the protective cover on the inside surface of the shanks 2" of protective cover 2, the tips of which are against the side surface of the precast concrete member, in which case ventilation channels 4 remain between the protrusions.
  • Fig. 2 presents a sandwich-structured precast concrete member 1 according to the invention, which comprises two concrete layers 1 and the insulating layer 5 between them.
  • This kind of protective cover of the member is made according to the invention such that a plastic profile (protective cover) 2 that is U-shaped in its cross-section is installed on both concrete layers 1.
  • On the top surface of both protective covers are fixing elements or adhesive 6, to which a protective film or protective paper 7 can be fixed to protect the insulating layer 5.
  • the U- shaped protective covers 2 can in principle be the same type as in the embodiment presented in Fig. 1 , but the shank of the U on the side of the insulation is preferably shallower than the other shank, which facilitates installation, because the shank on the side of the insulation does not need to sink deep into the insulation.
  • the shank on the side of the insulation 5 can be slightly sharp, which facilitates its installation inside the insulation, as is presented in Fig. 2.

Abstract

Protective cover (2) of a precast concrete member (1 ), which comprises a plastic part (2) to be installed at least partly on top of the precast concrete member. The invention is implemented so that the plastic part (2) is essentially U-shaped and elongated, and in that it can be installed on top of the edge, more particularly on top of the top edge, of the precast concrete member (1) essentially on the whole length of the edge such that the base (2') of the U sits above the edge and the flanks (2') of the U immediately against the sides of the member.

Description

PROTECTIVE COVER OF PRECAST CONCRETE MEMBER
The object of this invention is a protective cover of a precast concrete member, which comprises a plastic part to be installed at least partly on top of the precast concrete member.
The invention thus relates to precast concrete members and more particularly to their protection at the factory, during transport and at the worksite before installation. Precast concrete members are exposed to the weather and to abrasion from lifting slings, etc.
A precast concrete member can refer to a simple cast concrete element, the thickness of which is typically approx. 15-25 cm, or to a so-called sandwich element, in which an insulating layer is between two precast concrete elements. This invention is not limited to these options or to these dimensions.
Nowadays precast concrete members are most generally protected with a plastic film, which is tightly against the surface of the precast concrete member. A drawback in the use of a tight plastic film is that moisture is not able to evaporate. Additionally, a thin plastic film does not offer sufficient mechanical protection for the abrasion of hoisting slings and especially of hoisting chains. Furthermore, during transport and at the worksite the precast concrete member are easily chipped on their corners. For example, an installed balcony wall member chips easily on is upper edge when construction waste is tipped out of the building with wheelbarrows. There are numerous other situations also in which a precast concrete member is easily damaged.
The purpose of the invention is to achieve a protective cover of a precast concrete member, to which the aforementioned drawbacks are not attached. The protective cover of a precast concrete member according to the invention is characterized in that the plastic part is essentially U-shaped and elongated, and in that it can be installed on top of the edge, more particularly on top of the top edge, of the precast concrete member essentially on the whole length of the edge such that the base of the U sits above the edge and the flanks of the U immediately against the sides of the member. One preferred embodiment of the protective cover of a precast concrete member according to the invention is characterized in that inclined or straight protrusions are formed on the inside surface of the shanks of the essentially U- shaped plastic part, the tips of which are against the side surface of the precast concrete member, in which case ventilation channels remain between the protrusions.
Another preferred embodiment of the protective cover of a precast concrete member according to the invention is characterized in that the base of the U- shaped plastic part is formed to be at least partly corrugated in its cross-section, in which case it can be fitted to precast concrete members of different thicknesses.
Yet another preferred embodiment of the protective cover of a precast concrete member according to the invention, which comprises two concrete layers and the insulating layer between them, is characterized in that a U-shaped plastic part is installed on top of the top edge of both concrete layers, and in that a protective film or protective paper or similar is fixed between these plastic parts to protect the insulating layer.
One of the advantages of the invention that can be mentioned is that the protective cover is appreciably more durable than earlier and thus offers better protection. In addition, its installation is extremely easy. Since the protective cover according to the invention is ventilated, the precast concrete member does not become wet. Another advantage that can be mentioned is that the protective cover can easily be re-used.
In the following, the invention will be described in more detail by the aid of some preferred embodiments with reference to the attached drawings, wherein
Fig. 1 presents a partially sectioned view of the top part of a simple precast concrete member and the protective cover installed on top of it.
Fig. 2 presents a partially sectioned view of the top part of a sandwich-structure precast concrete member and the protective cover installed on top of it. Fig. 1 thus presents a simple precast concrete member 1 and the elongated, plastic protective cover 2 installed on top of it. Thus the top edge of the precast concrete member is presented in the drawings, but the other edges of the member can be just as well protected with the protective cover 2 according to the invention.
The protective cover 2 is preferably a plastic profile that essentially retains its shape, which can be manufactured from solid plastic or similar, and the length of which can be e.g. approx. 60-600 cm, but other dimensions are possible depending on the dimensions of the precast concrete member. The length can e.g. be fitted according to the wishes of the customer, according to the lifting lugs of the member, etc. The plastic protective profile 2 functions during transportation as a protection against, among other things, the abrasion of chains and slings and also as collision protection during, among other things, transportation and lifting. In addition it functions as a ventilating weather protector during transportation from the factory, storage and construction before the final weather protection provided by the building. The protective cover is, of course, removed before any finishing work, but it can be used again, which is an advantage compared to the current solution.
The protective cover 2 according to the invention is thus a plastic profile, in which is a base 2' and shanks 2", that is U-shaped in its cross-section. In its static state the shanks 2" approach each other. When installing the protective cover on top of the precast concrete member, the shanks must thus be spread slightly apart. This produces compressive friction against the sides of the precast concrete member, in which case the protective cover stays in its position better. The shape of the protective cover reinforces it and improves its grip on the member.
The base 2' of the protective cover is made to be at least partly corrugated, in which case it stretches if necessary if the precast concrete member is thicker. Typically these types of precast concrete members are 15-25 cm thick and the same protective cover can, as a result of the base solution according to the invention, be used for these concrete thicknesses.
Protrusions 3 are formed essentially on the whole length of the protective cover on the inside surface of the shanks 2" of protective cover 2, the tips of which are against the side surface of the precast concrete member, in which case ventilation channels 4 remain between the protrusions.
Fig. 2 presents a sandwich-structured precast concrete member 1 according to the invention, which comprises two concrete layers 1 and the insulating layer 5 between them. This kind of protective cover of the member is made according to the invention such that a plastic profile (protective cover) 2 that is U-shaped in its cross-section is installed on both concrete layers 1. On the top surface of both protective covers are fixing elements or adhesive 6, to which a protective film or protective paper 7 can be fixed to protect the insulating layer 5. The U- shaped protective covers 2 can in principle be the same type as in the embodiment presented in Fig. 1 , but the shank of the U on the side of the insulation is preferably shallower than the other shank, which facilitates installation, because the shank on the side of the insulation does not need to sink deep into the insulation. In addition, the shank on the side of the insulation 5 can be slightly sharp, which facilitates its installation inside the insulation, as is presented in Fig. 2.
It is obvious to the person skilled in the art that the invention is not limited to the embodiments described above, but that it can be varied within the scope of the claims presented below. Thus a more specific plastic material and shape of the protective part according to the invention can be selected by a person skilled in the art according to each specific need, however within the scope of protection as defined in the claims. Corner reinforcers or bead reinforcers can, if necessary, also be installed on the comers of the protective part to provide extra protection against abrasions from lifting slings or lifting chains.

Claims

1. Protective cover (2) of a precast concrete member (1), which comprises a plastic part (2) that is installed at least partly on top of the precast concrete member, characterized in that the plastic part (2) is essentially U-shaped and elongated, and in that it can be installed on top of the edge, more particularly on top of the top edge, of the precast concrete member (1) essentially on the whole length of the edge such that the base (2') of the U sits above the edge and the flanks (2") of the U immediately against the sides of the member.
2. Protective cover of a precast concrete member according to claim 1, characterized in that inclined or straight protrusions (3) are formed on the inside surface of the shanks (2") of the essentially U- shaped plastic part (2), the tips of which are against the side surface of the precast concrete member (1), in which case ventilation channels (4) remain between the protrusions (3).
3. Protective cover of a precast concrete member according to claim 1 or
2, characterized in that the base (20 of the U-shaped plastic part (2) is formed to be at least partly corrugated in its cross-section, in which case it can be fitted to precast concrete members of different thicknesses.
4. Protective cover (2) of a precast concrete member (1) according to any of claims 1-3, which precast concrete member comprises two concrete layers (1) and the insulating layer (5) between them, characterized in that a U-shaped plastic part (2) is installed on top of the top edge of both concrete layers (1), and in that a protective film (7) or protective paper or similar is fixed between these plastic parts to protect the insulating layer (5).
5. Protective cover of a precast concrete member according to claim 4, characterized in that fixing elements or adhesive (6) are arranged on the top surface of the U-shaped plastic part placed on top of both concrete layers (1), to which a protective film (7), or protective paper can be fixed.
6. Protective cover of a precast concrete member according to claim 4 or 5, characterized in that the shank of the U-shaped plastic parts
(2) placed on top of the concrete layers (1) that is on the side of the insulation is shallower than the other shank.
7. Protective cover of a precast concrete member according to any of claims 1-6, characterized in that the shanks (2") of the U- shaped plastic part (2) approach each other in the static state, i.e. in the state in which the plastic part is not yet installed on top of the precast concrete member (1).
8. Protective cover of a precast concrete member according to any of claims 1-7, characterized in that the U-shaped plastic part (2) is approx.60-600 cm long.
PCT/FI2008/050625 2007-11-19 2008-11-04 Protective cover of precast concrete member WO2009066002A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08851566.3A EP2212489A4 (en) 2007-11-19 2008-11-04 Protective cover of precast concrete member

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20075819A FI20075819L (en) 2007-11-19 2007-11-19 Protection for a concrete element
FI20075819 2007-11-19

Publications (1)

Publication Number Publication Date
WO2009066002A1 true WO2009066002A1 (en) 2009-05-28

Family

ID=38786749

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2008/050625 WO2009066002A1 (en) 2007-11-19 2008-11-04 Protective cover of precast concrete member

Country Status (3)

Country Link
EP (1) EP2212489A4 (en)
FI (1) FI20075819L (en)
WO (1) WO2009066002A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014870A1 (en) * 1979-02-20 1980-09-03 Veith Pirelli A.G. Cover strip for roof edges, especially for flat roofs
FI3196U1 (en) * 1997-05-09 1997-12-16 Pekkarinen Marjo Riitta Transport and mounting protection for concrete elements or the like
US5772185A (en) * 1996-09-24 1998-06-30 Pulsipher; Larry W. Resilient wall cap
US20070074476A1 (en) * 2005-10-03 2007-04-05 Morico Peter D Insulated Concrete Form Installation Protection and Debris Control System

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1724740A (en) * 1924-01-14 1929-08-13 United States Gypsum Co Plaster-wall-board shipping package or holder
CA1018911A (en) * 1974-01-02 1977-10-11 United States Gypsum Company Reinforced gypsum structural member and method
GB2118606A (en) * 1982-02-23 1983-11-02 Anthony Daly The wall weather protector
GB2227260A (en) * 1988-09-02 1990-07-25 George Henry Molyneux Protective covering

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014870A1 (en) * 1979-02-20 1980-09-03 Veith Pirelli A.G. Cover strip for roof edges, especially for flat roofs
US5772185A (en) * 1996-09-24 1998-06-30 Pulsipher; Larry W. Resilient wall cap
FI3196U1 (en) * 1997-05-09 1997-12-16 Pekkarinen Marjo Riitta Transport and mounting protection for concrete elements or the like
US20070074476A1 (en) * 2005-10-03 2007-04-05 Morico Peter D Insulated Concrete Form Installation Protection and Debris Control System

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2212489A4 *

Also Published As

Publication number Publication date
FI20075819L (en) 2009-05-20
EP2212489A1 (en) 2010-08-04
FI20075819A0 (en) 2007-11-19
EP2212489A4 (en) 2013-08-21

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