BS EN 1504-4:2004 PDF Download

BS EN 1504-4:2004 is a standard that focuses on products and systems used for the protection and repair of concrete structures, specifically for structural bonding purposes. This standard provides definitions, requirements, quality control, and evaluation of conformity for structural bonding products and systems.

The standard addresses three main types of structural bonding applications: 1) the bonding of external plates (made of steel or other suitable materials such as fiber-reinforced composites) to the surface of a concrete structure for strengthening purposes, including laminating of plates; 2) the bonding of hardened concrete to hardened concrete, often associated with the use of precast units in repair and strengthening; and 3) the casting of fresh concrete to hardened concrete using an adhesive bonded joint, where it forms an integral part of the structure and is required to act compositely.

It is important to note that the performance requirements specified in this standard may not be applicable to highly specialized applications in extreme environmental conditions, such as cryogenic use. Additionally, the standard does not cover specialized circumstances like accidental impact (e.g., due to traffic or ice) or earthquake loading, where specific performance requirements will be applicable.