Start with the protected concrete and the required fire exposure. We supply calcium silicate boards for tunnel-lining fire protection, with a documented reference built around two 10 mm board layers and a named RABT test report. Review the product, construction and report conditions together when evaluating a tunnel protection specification.
The tunnel board is formed from inorganic siliceous and calcareous materials with virgin pulp fiber. Its intended role here is passive fire protection of a concrete tunnel lining. The reference arrangement is a post-fixed, mechanically anchored board lining, with the protection thickness made up of two separate layers.
| Identification field | Documented reference |
|---|---|
| Product direction | Calcium silicate tunnel fire protection board |
| Reference board dimensions | 1220 × 2440 × 10 mm |
| Layer arrangement | Two layers, each 10 mm |
| Total board protection thickness | 20 mm |
| Supporting construction | Concrete lining |
| Connection approach | Mechanical anchoring in the reference assembly |
| Named reference | F-RABT-2.00-20 |
The board dimensions identify the reference material. The layer arrangement, supporting construction and connections are part of the protection concept and need to remain attached to it throughout a project review.
The board lining sits between the fire exposure and the concrete surface. Its role is to form the specified protective construction during the assessed exposure. The material, total thickness, layer arrangement, connections and substrate therefore belong to the same technical evaluation.
Two 10 mm layers give a total board thickness of 20 mm. They also create a particular arrangement of individual boards and joints. A specification that records only the total thickness leaves part of the construction undefined.
Mechanical anchors connect the lining to the concrete. Their suitability depends on the actual substrate and the adopted detail. Keep board joints, anchor positions and local terminations coordinated with the project design and the applicable technical assessment.
Changes of geometry, service interfaces, access points and the end of a protected zone interrupt a simple board field. Identify those locations on the project layout so the protection detail can address them consistently with the intended construction.
The F-RABT-2.00-20 reference is associated with report JCBG(01)250609061. The entity named in the report is Jiujiang Chenlan New Materials Co., Ltd. Keep that identity visible when reviewing the document and relating it to a proposed supply.
| Report field | Recorded reference |
|---|---|
| Report number | JCBG(01)250609061 |
| Named product reference | F-RABT-2.00-20 |
| Entity named in the report | Jiujiang Chenlan New Materials Co., Ltd. |
| Test basis | GB 28376-2012, as identified in the report |
| RABT heating stage | ≥2.00 h |
| Cooling stage | ≥1.83 h |
| Total board thickness in the reference | 20 mm |
Heating and cooling are separate reported stages. Review the full report for the specimen, construction, measurement criteria and scope; the duration values should remain attached to those conditions.
For project acceptance, compare the required exposure and criteria with the applicable construction documentation. Any change to board identity, layers, fixings or substrate needs the appropriate technical review. The report reference is a concrete starting point for that comparison, rather than a blanket approval for every tunnel arrangement.
Report reference for the named F-RABT-2.00-20 construction.
View the report overview ↗A tunnel-board selection becomes meaningful when the required exposure, protected structure and proposed construction are compared on the same basis. The matrix below identifies the main relationships to resolve before the reference is adopted in a project.
| Design subject | Reference available here | Project comparison | Practical implication |
|---|---|---|---|
| Fire exposure | Identified RABT heating and cooling stages | Required curve, duration and acceptance criteria | A shared duration number alone is an incomplete comparison |
| Protected structure | Concrete-lining application | Actual substrate, geometry and structural conditions | The supporting construction remains part of the review |
| Board arrangement | Two 10 mm layers | Intended layers, joints and protection thickness | Record individual layers as well as total thickness |
| Connections | Mechanically anchored reference | Anchor suitability and the adopted connection detail | Coordinate the board layout with the substrate and fixings |
| Local interfaces | Board-lined protection field | Openings, access points and terminations | Develop specific details where the continuous field is interrupted |
| Service environment | Tunnel-lining use | Moisture, cleaning, movement and access conditions | Consider the in-service requirements alongside the fire design |
The matrix is a coordination guide. The responsible project team determines the accepted design and the documents required for the particular tunnel. FireSafe's product discussion should stay connected to that identified design basis.
A broad request for fireproof board leaves the material, exposure and installation route open. The named F-RABT reference, two-layer arrangement and board dimensions give the discussion a defined starting point. This helps separate a tunnel concrete-protection application from an architectural finish or a general-purpose board request.
Total thickness is easy to list but incomplete on its own. Recording two layers of 10 mm keeps the individual boards visible in the specification and material schedule. That gives the project team a clearer basis for reviewing layout, joints and connections.
The report number and named entity make the document reference explicit. Retaining the test basis and separate heating and cooling stages helps technical and procurement discussions refer to the same information, without turning a specific result into an unrestricted performance claim.
The value of this reference is its identifiable material, construction and documentation. Evaluate that combination against the project requirements, then carry the accepted details through to the supply description.
A two-layer lining uses board material in each layer. For an illustrative protected area of 100 m², two complete layers correspond to 200 m² of board area before cuts, local details and ordering allowances. This relationship is a quantity concept, not a final panel take-off.
The actual schedule follows the accepted layout, including board joints, openings and changes of geometry. Keep the dimensions and number of layers explicit in the schedule so a quantity expressed in square metres has a clear meaning.
The material description, layout and connection detail should refer to the same protection construction. Installation records and any later inspection or repair planning should likewise identify the board arrangement that was adopted. The project team can then trace a local change or replacement to a specific detail, rather than to a generic thickness description.
The documented tunnel-board reference identifies Jiujiang Chenlan New Materials Co., Ltd. These facility and workshop views provide manufacturing context for that named product source. For project approval, use the identified board, construction and test report together.
Tunnel protection discussions bring material, fire-exposure and construction questions together. Speak with the FireSafe team using the intended protection area, concrete-lining information and required exposure. An identified reference helps keep the product discussion specific as those questions are considered.
Our meeting and technical-work photographs show face-to-face exchanges and hands-on work with board materials. For the tunnel construction itself, the named product, report and applicable details remain the basis for evaluation. Keeping those two strands together gives the discussion a human contact point and a traceable technical reference.
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Start with the project fire requirement and protected construction. The required curve, duration and acceptance criteria define the performance question; the board and installation reference provide a proposed construction to evaluate against it. Thickness becomes meaningful within that comparison.
This page identifies a two-layer, 20 mm total reference with named RABT documentation. It gives a specific starting point, but the project still needs to match its concrete substrate, geometry, connection detail and acceptance process to the applicable documentation. Keep the design basis attached to the product reference throughout the review.
A material reaction-to-fire classification concerns the material's behavior under its classification method. Tunnel fire resistance concerns the protected construction under a defined exposure and acceptance criteria. These are related fire-safety topics with different evaluation objects.
| Evaluation | Object to identify |
|---|---|
| Material reaction to fire | The exact board, classification method and applicable result |
| Tunnel fire protection | The protected substrate, board construction, exposure, connections and acceptance criteria |
Use the document appropriate to the question being asked. A material description cannot replace the construction information needed to assess the concrete protection arrangement.
The documented reference here uses two 10 mm layers. A single 20 mm board changes the arrangement of individual boards and joints even though the total nominal thickness is the same. Treat that change as a proposed substitution requiring the applicable technical assessment.
The same discipline applies when changing board identity, joints, anchors or the supporting construction. Keep the accepted layer arrangement in the specification, material schedule and layout. This makes later comparisons and procurement substitutions easier to evaluate against the actual reference.
Keep the identified product, report, construction detail and project requirement in one consistent set. The report establishes a test reference; the construction detail defines the arrangement proposed for use; the project requirement defines the intended performance and acceptance conditions.
For the reference on this page, retain F-RABT-2.00-20 and JCBG(01)250609061 with the named entity and reported exposure stages. Review the full document for specimen details and criteria. A summary table is useful for navigation, while the underlying documents remain necessary for a technical decision.
A post-fixed lining is attached to an existing concrete surface. Permanent formwork is incorporated into the construction during concreting. The installation route changes the relationship between board, concrete and connections.
The reference shown here is the mechanically anchored, two-layer lining. Evaluate it on that basis. If a project uses a different construction route, the board selection and supporting assessment need to address that route specifically, rather than treating all tunnel-board applications as one arrangement.
Keep the stages separate. The recorded heating stage is at least 2.00 h, and the cooling stage is at least 1.83 h under the report's identified basis. The stages form part of the stated test exposure; they are not two interchangeable fire-resistance labels.
Compare the project's required exposure and acceptance criteria with the full report. Retain the curve, specimen and measurement conditions when discussing the result. This is more useful than quoting one combined duration that loses the distinction between heating and cooling.
Share the required fire curve and duration, concrete-lining information, protection area, geometry and destination. Include the intended layer arrangement and connection constraints so the product discussion starts from the right reference.
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