The purchase specification for a carbon strip should define its dimensions, longitudinal material data, bonding face and traceability. System compatibility and structural acceptance remain explicit project requirements.
Component qualification inquiry only: F1 can assess a supplied strip specification and required evidence. Stock sizes, assessed strengthening kits, adhesive compatibility and approvals require confirmation before an offer is accepted.
Specified carbon-fiber laminate with a qualified resin and controlled bonding surface.
Give each strip a part number linked to width, thickness, length and the permitted tolerances. Define how those dimensions are measured and whether the requirement applies before or after any surface treatment. Include straightness, edge condition and end-cut requirements where they affect fitting or bonding. A supplier needs the actual section rather than an approximate area calculated from a rounded catalog dimension.
State whether delivery is in individual lengths or another agreed format, and establish transport and handling requirements for that format. The reinforcement drawing should identify orientation and installed position without relying on removable packaging. If lengths will be cut on site, assign the cutting procedure, identification transfer and final inspection to a named party. Material availability and packaging geometry are quotation items, not assumed stock commitments.
ReferencesEAD 160086-01-0301: CFRP strengthening kitsSika CarboDur System: application method statement
Specify the properties needed by the designer, including longitudinal stiffness and tensile behavior, together with the applicable test method and acceptance basis. Distinguish typical development data from declared or statistically established design inputs. The source of a value, specimen orientation, conditioning and representative production construction should be identifiable. An isolated high test result is not a procurement specification. ISO 10406-3:2019 gives test methods for pultruded CFRP strips used as externally bonded reinforcement; on European projects the bonding adhesive is normally declared under EN 1504-4.
Define the permitted reinforcement and matrix system and how changes are controlled. Where thermal or environmental performance matters, agree on the evidence and conditioning relevant to the project. A carbon strip's resin temperature data should not be presented as the service limit of an adhesive joint. The purchaser should state which characteristics are mandatory for tender review and which need to be established during development.
ReferencesACI PRC-440.2-23: FRP strengthening guideISO 10406-3:2019: test methods for CFRP strips
Identify the intended bonding face, its surface preparation, protection during transport and compatibility requirements. Surface texture alone does not demonstrate a qualified adhesive interface. The system owner should determine the acceptance evidence for the actual strip, adhesive, concrete and any repair layer. Preserve the identity of the proposed materials during sample evaluation so the production component can be compared with what was accepted.
Define whether the order covers only strips or components of an assessed kit. Include exclusions and interfaces in the quotation, such as adhesive supply, site preparation and installation supervision. If an existing system approval is a project requirement, check its exact products and allowed variations before purchasing an alternative strip. A reference to an assessment document is not evidence that the offered material belongs to an assessed system.
Set a qualification stage before serial delivery: approve the drawing and material proposal, identify representative samples and agree on test acceptance. The inspection plan can cover dimensions, visual condition, bonding-face protection and the specified material tests. Record the criteria for disposition of damaged edges, surface contamination or mismarked pieces. Do not leave rework decisions to a generic visual-quality statement.
Request a delivery record that connects the part number and batch to the relevant material and inspection evidence. Specify how identification survives unpacking, cutting and installation. Agree on protective packaging, handling instructions, storage conditions and an incoming-inspection period. These controls support a traceable component purchase; final acceptance of the strengthened member also requires the system designer's and installer's project records.
Guidance · United States origin; use where accepted by the project designer and authority
Engineering, construction and inspection guidance for FRP used in externally bonded or near-surface-mounted concrete strengthening.
Application boundary: A guide, not a product certificate or an automatic legal approval. The project design must define enforceable requirements. It is distinct from standards for internal GFRP reinforcing bars.
Standard · Projects adopting this code through the governing code, authority or contract
Minimum requirements for strengthening existing concrete with the unidirectional externally bonded and near-surface-mounted FRP systems permitted by its Chapter 4.
Application boundary: Publication does not make it law everywhere or certify a product. Masonry is excluded. Seismic strengthening of seismic-force-resisting members in Seismic Design Categories B–F is outside its scope; the designer must establish the applicable route.
ReferencesACI CODE-440.13-24: FRP concrete-strengthening codeACI CODE-440.13-24: official preview and scope
Assessment route · European technical assessment route for construction products
Assessment of concrete-strengthening kits comprising unidirectional carbon/epoxy strips and an epoxy structural bonding agent, for externally bonded or near-surface-mounted use.
Application boundary: Strip width and thickness must be prefabricated in the plant; site cutting to width is excluded. The stated intended use excludes seismic retrofitting and prevention. An EAD is not an ETA: verify the actual kit and assessment scope. EOTA lists the earlier -00 version as superseded.
ReferencesEAD 160086-01-0301: CFRP strengthening kitsEOTA: European Assessment Document register
Public source scopes were reviewed on . These references do not establish certification of an F1 product. Agree the offered grade, finished component, test specimen and acceptance criteria in the project specification.
This is a specification and qualification route. Dimensions, availability, minimum order and evidence requirements must be reviewed before a product offer is confirmed.
Only if expressly included in an agreed scope with compatibility and system evidence. A strip-only quotation does not establish an accepted strengthening kit.
Not automatically. The offered construction, bonding interface, property basis and intended strengthening use need project qualification.
No. Its scope excludes strips cut on site to the required width. Specify the factory-produced width and thickness. Cutting to length is a separate installation operation that must follow the selected kit's instructions and the project specification.
Standard or public authority
ISO 10406-3:2019: test methods for CFRP stripsTest methods for unidirectional pultruded CFRP strips used as externally bonded reinforcement on concrete. Results describe the strip, not a bonded strengthening system.
Industry application evidence
Epsilon Composite: pultruded carbon flat laminatesEvidence of a commercial carbon/epoxy strip application in civil engineering; proprietary products and performance are not F1 specifications.
Standard or public authority
ACI PRC-440.2-23: FRP strengthening guidePublisher's scope for engineering, construction and inspection of externally bonded and near-surface-mounted FRP strengthening systems. The full guide is not reproduced.
Standard or public authority
ACI CODE-440.13-24: FRP concrete-strengthening codeOfficial publisher listing for the 2024 design code. Its publication does not establish adoption by a particular jurisdiction or project.
Standard or public authority
ACI CODE-440.13-24: official preview and scopeThe public preview includes the preface and Sections 1.1–1.2, establishing concrete-only, permitted-system and seismic limits. It does not provide the full design provisions.
Standard or public authority
EOTA: European Assessment Document registerLists EAD 160086-01-0301 and identifies the earlier 160086-00-0301 as superseded.
Standard or public authority
EAD 160086-01-0301: CFRP strengthening kitsSections 1.1–1.2 define the carbon/epoxy strip and bonding-agent kit, manufacturing dimensions and intended-use limits. This assessment document is not an approval of F1 products.
Industry application evidence
Sika CarboDur System: application method statementA manufacturer's system-specific example of installation and inspection controls. Its adhesive, dimensions, environmental limits and cure times must not be transferred to another system.
Provide the application and acceptance requirements so we can assess material, geometry, sampling and the proposed supply scope. We reply within one business day; a formal quotation follows once the specification and delivery are reviewed.
