GB2328694A - Fire and heat resistant cladding with steel and intumescent layers - Google Patents
Fire and heat resistant cladding with steel and intumescent layers Download PDFInfo
- Publication number
- GB2328694A GB2328694A GB9718140A GB9718140A GB2328694A GB 2328694 A GB2328694 A GB 2328694A GB 9718140 A GB9718140 A GB 9718140A GB 9718140 A GB9718140 A GB 9718140A GB 2328694 A GB2328694 A GB 2328694A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steel
- fire
- intumescent
- coating
- cladding
- 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.)
- Pending
Links
Classifications
-
- 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
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
- E04B1/941—Building elements specially adapted therefor
- E04B1/943—Building elements specially adapted therefor elongated
- E04B1/944—Building elements specially adapted therefor elongated covered with fire-proofing material
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Abstract
The fire and heat resistance of a steel member (3) is enhanced by applying a coating or cladding of an intumescent material to a surface of a steel sheet (2) positioned between the steel member (3) and a potential heat source likely to cause the material to intumesce. The intumescent coating or cladding is applied to the surface (1) of the steel sheet (2) furthest from the potential heat source.
Description
FIRE AND HEAT RESISTANT CLADDING
This invention relates to methods of enhancing the fire and heat resistance of steel members and steel members so enhanced.
It is known to apply to the external surfaces of load bearing, non-load bearing and structural steel members a coating or cladding of an intumescent material. In the event of heat from a fire or other source, a chemical action occurs in the coating or cladding which causes it to expand rapidly to form a carbonaceous char many times the thickness of the original applied coating or cladding. This char is highly insulating and is effective in reducing the temperature rise of the underlying surface of the steel member and any object protected thereby.
As mentioned above, conventionally the intumescent coating or cladding is applied directly onto the exposed surface of the steel member to be protected. This means that the coating or cladding is fully exposed to the radiative and convective effects of a fire or other heat source.
The coating or cladding can therefore intumesce quickly in the event of a fire. Such intumescent coatings or claddings are, however, subject to the effects of both environmental and mechanical damage during their normal lifetime which can impair the performance and effectiveness of the coatings or claddings when heated. Such damage can limit the range of possible applications and in addition costly maintenance programmes can be incurred. In addition, intumescent char when formed is very fragile and can be easily damaged during a fire with the result that the insulation properties of the coating or cladding are diminished.
It is an object of this invention to provide a method of enhancing the fire and heat resistance of steel members which does not suffer from the disadvantages discussed above.
According to the present invention in one aspect there is provided a method of enhancing the fire and heat resistance of a steel member which comprises applying a coating or cladding of an intumescent material to a surface of a steel sheet positioned between the member and a potential heat source likely to cause the material to intumesce, the coated or clad surface being on that side of the sheet furthest from the potential heat source.
The coated or clad steel sheet provides protection to the steel member by creating an insulating barrier between the member and the heat source.
The intumescent material can be in the form of a strip or sheet or in the form of an intumescent coating which is applied to the steel sheet.
The intumescent material can be a formulation which typically includes a source of free high boiling acid, a carbonific polyol, a spumific agent, a binder resin, various additives for rheological control and appropriate solvents. Individual components may perform more than one function and not all components need be present.
The steel sheet may take the form of a panel, floor, ceiling membrane or a preformed shaped enclosure, e.g. a box structure.
One embodiment of the invention will now be described by way of example only with reference to the accompanying drawings in which the sole Figure is a perspective view of a steel box structure in accordance with the invention.
As will be seen from the drawing, the internal surfaces 1 of a steel container 2 are coated or lined with an intumescent material in liquid, strip or sheet form. A steel member 3 to be protected is positioned within the container with an air space between the container internal surfaces and the member. This air space allows the intumescent coating or lining to intumesce to provide an insulating barrier to the steel member to be protected.
The intumescent material may be in the form of a coating applied by a brush or as a spray to the internal surfaces or may comprise sheets or strips of intumescent cladding adhered or otherwise attached to the internal walls. The internal surfaces may be fully coated or lined, or parts of such surfaces may be coated or lined.
It will readily be appreciated that modifications can readily be made to the embodiment illustrated in the drawing and described above, all such modifications and alterations being within the scope of this application.
Claims (6)
1. A method of enhancing the fire and heat resistance of a steel member
which comprises applying a coating or cladding of an intumescent
material to a surface of a steel sheet positioned between the member
and a potential heat source likely to cause the material to intumesce,
the coated or clad surface being on that side of the sheet furthest
from the potential heat source.
2. A method as claimed in Claim 1 wherein the intumescent material is
in the form of a strip or sheet.
3. A method as claimed in Claim 1 wherein the intumescent material is
in the form of an intumescent coating which is applied to the steel
sheet.
4. A method as claimed in one of Claims 1 to 3 wherein the intumescent
material is a formulation which includes one or more of the following
components:
a source of free high boiling acid, a carbonific polyol, a spumific
agent, a binder resin, and additives for rheological control and
appropriate solvents.
5. A method as claimed in any one of the preceding Claims wherein the
steel sheet takes the form of a panel, floor, ceiling membrane or a
preformed shaped enclosure.
6. A steel member whose fire and heat resistance has been enhanced by
a method as claimed in any one of the preceding Claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9718140A GB2328694A (en) | 1997-08-27 | 1997-08-27 | Fire and heat resistant cladding with steel and intumescent layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9718140A GB2328694A (en) | 1997-08-27 | 1997-08-27 | Fire and heat resistant cladding with steel and intumescent layers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9718140D0 GB9718140D0 (en) | 1997-10-29 |
| GB2328694A true GB2328694A (en) | 1999-03-03 |
Family
ID=10818096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9718140A Pending GB2328694A (en) | 1997-08-27 | 1997-08-27 | Fire and heat resistant cladding with steel and intumescent layers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2328694A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2429983A (en) * | 2005-09-07 | 2007-03-14 | Interact Fire Solutions Ltd | Protecting a building element from fire |
| WO2009073377A1 (en) * | 2007-12-06 | 2009-06-11 | Ppg Industries Ohio, Inc. | Intumescent strips for structural beam fire protection |
| EP2078538A1 (en) | 2008-01-14 | 2009-07-15 | Siemens Aktiengesellschaft | Fire protection end plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2142164A (en) * | 1936-02-27 | 1939-01-03 | Robertson Co H H | Fireproofing member |
| US4530877A (en) * | 1981-10-22 | 1985-07-23 | Cyclops Corporation | Fire resistant foam insulated building panels |
| US4663204A (en) * | 1984-02-06 | 1987-05-05 | D.R.I.M. Limited | Element from intumescent fire-proof composition, and specific method for preparing same |
-
1997
- 1997-08-27 GB GB9718140A patent/GB2328694A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2142164A (en) * | 1936-02-27 | 1939-01-03 | Robertson Co H H | Fireproofing member |
| US4530877A (en) * | 1981-10-22 | 1985-07-23 | Cyclops Corporation | Fire resistant foam insulated building panels |
| US4663204A (en) * | 1984-02-06 | 1987-05-05 | D.R.I.M. Limited | Element from intumescent fire-proof composition, and specific method for preparing same |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2429983A (en) * | 2005-09-07 | 2007-03-14 | Interact Fire Solutions Ltd | Protecting a building element from fire |
| WO2009073377A1 (en) * | 2007-12-06 | 2009-06-11 | Ppg Industries Ohio, Inc. | Intumescent strips for structural beam fire protection |
| EP2078538A1 (en) | 2008-01-14 | 2009-07-15 | Siemens Aktiengesellschaft | Fire protection end plate |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9718140D0 (en) | 1997-10-29 |
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