ISO 4103:1979 PDF Download

ISO 4103:1979 standard provides a systematic classification system for fresh concrete based on its consistency. The classification is essential for ensuring the proper handling and workability of concrete during construction activities.

The standard defines consistency as the ability of freshly mixed concrete to flow and occupy its intended shape without excessive segregation or bleeding. It categorizes concrete into different classes, taking into account the level of fluidity and cohesiveness exhibited by the material.

Tables 1 and 2 of the standard outline the specific requirements for each consistency class. These requirements apply to all types of concrete, with certain restrictions outlined in ISO 4110 and ISO 4109 relating to the Vebe and Slump tests, respectively.

By providing a standardized classification of consistency, ISO 4103:1979 aims to facilitate communication and ensure that the appropriate consistency is achieved during concrete production and placement. This helps contractors, engineers, and other professionals in the construction industry achieve consistent and reliable results in their concrete projects.