Fibre-reinforced polymer (FRP) reinforcement for concrete structures — Part 1: Specifications of FRP sheets
Fibre-reinforced polymer (FRP) reinforcement for concrete structures — Part 1: Specifications of FRP sheets
This document specifies requirements for fibre-reinforced polymer (FRP) sheets for upgrading of concrete members for material suppliers. The methodologies to express the mechanical properties as characteristic values, appearance and dimensions, and sampling test are specified in this document. The fibre orientation of the FRP sheets covered by this document is unidirectional.
ISO 18319-1:2026, published by the International Organization for Standardization (ISO), defines the specifications for fibre-reinforced polymer (FRP) sheets used in the upgrading and reinforcement of concrete structures. This standard details requirements crucial for material suppliers, focusing on unidirectional FRP sheets and their mechanical properties, appearance, dimensions, and testing methods. By establishing a clear methodology for specifying and verifying FRP characteristics, ISO 18319-1:2026 enables suppliers and end users to ensure product quality, safety, and suitability for structural reinforcement and repair.
Mechanical Properties: The standard specifies how to express and determine mechanical properties such as:
Appearance and Dimensions: Requirements include:
Sampling and Testing:
Fibre Orientation: Only sheets with unidirectional fibre orientation are covered, providing consistent mechanical performance and predictable behavior in structural applications.
Documentation and Reporting: Guidelines are provided for reporting test results, including mean values, deviations, and any observed changes in appearance.
ISO 18319-1:2026 is essential for suppliers, designers, and contractors in the construction industry that use FRP sheets for concrete strengthening and rehabilitation. Key practical applications include:
Structural Upgrading: Enhancing the load-bearing capacity of concrete beams, slabs, and columns by external bonding of FRP sheets.
Seismic Retrofits: Increasing resilience of existing structures against earthquakes by applying FRP-based reinforcement.
Стандарты, упомянутые в описании
Repair and Maintenance: Using FRP sheets to repair cracks, restore structural integrity, and prolong the service life of infrastructure such as bridges, parking garages, and buildings.
Quality Control and Procurement: Material suppliers and procurement teams rely on the standard to specify product quality, ensuring all critical parameters are declared and verified before use.
To ensure comprehensive compliance and best practices, the following international standards are referenced or related to ISO 18319-1:2026:
ISO 10406-2: Fibre-reinforced polymer (FRP) reinforcement of concrete - Test methods - Part 2: FRP sheets
ISO 291: Plastics - Standard atmospheres for conditioning and testing
ISO 5725: Accuracy (trueness and precision) of measurement methods and results
ISO 10548: Carbon fibre - Determination of size content
ISO 14484: Performance guidelines for design of concrete structures using FRP materials
Implementing ISO 18319-1:2026 fosters confidence in the procurement and use of FRP sheets, supporting safe, durable, and reliable strengthening of concrete structures. By following this international standard, stakeholders minimize variability, reduce structural risk, and ensure consistent performance in critical civil engineering applications. Adherence to standardized testing and reporting procedures also promotes transparency and facilitates compliance with regulatory and design codes worldwide.