Concrete is delivered from ready-mixed concrete plants to construction sites in the form of unhardened half-finished materials. Proper strength and durability can be verified only after its hardening. Therefore, it can be said that concrete is a construction material that requires a traceability assurance system that is more meticulous than those for other industrial products. We are developing a technology to assure traceability of concrete by making use of the IC tag. This paper describes a study on the various information regarding concrete production/works recorded and maintained in the traceability system.
