Revision of the "Recommendations for Practice of Quality Control in Concrete Work" of the Architectural Institute of Japan
By H. Tanano
Concrete Journal, Vol.53, No.8, Aug. 2015
- Synopsis
- The "Recommendations for Practice of Quality Control in Concrete Work" of the Architectural Institute of Japan have been revised after sixteen years. This was done against the backdrop of rapid changes in the environment for concrete quality since the year 2000, including revisions of related laws and standards such as the Building Standards Act and the Industrial Standardization Law, and the revision of various related technical data such as JASS 5. Concrete is now classified according to type and quality into JIS A 5308 compliant products and Minister of Land, Infrastructure and Transport approved products, based on Article 37 of the Building Standards Act. Further, a method that combines the use of acceptance inspections and specimens for testing structural concrete strength is also specified. Other specified content includes methods for the selection of ready-mixed concrete plants when factors such as drying shrinkage and Young's modulus are part of the design specifications, and methods for verifying concrete performance. In addition to the above, this paper discusses the major revision points and content of these latest revised "Recommendations for Practice of Quality Control in Concrete Work".
- Keywords:
- quality control, JIS compliant products, ministry approved products, acceptance inspection, structural concrete strength, cover thickness
