About the “Guide for Ensuring the Quality of Concrete Structures (Draft)” by the Tohoku Regional Development Bureau of the Ministry of Land, Infrastructure, Transport and Tourism
By K. Sato
Concrete Journal, Vol.60, No.4, Apr. 2022
- Synopsis
- The Tohoku Regional Development Bureau of the Ministry of Land, Infrastructure, Transport and Tourism has formulated the “Guide for Ensuring the Quality of Concrete Structures (Draft)” (for bridge abutments, bridge piers, culverts, and retaining walls) and the “Guide for Ensuring the Quality of Concrete Structures (Draft)” (for tunnel lining concrete) for new structures in order to ensure the quality of concrete structures for reconstruction roads, where a large number of structures are constructed in a short period of time. Both of these guides adopt a quality assurance system that aims for proper placing and compacting of concrete by using the “Check Sheet to Grasp Construction Conditions”. After formwork removal, inspection for defects is conducted and the type and severity of detected defects are evaluated by visual evaluation of the surface layer, and the construction method for the next lift is improved to suppress the occurrence of similar defects. The following is an explanation of the points to note regarding the use of these guides.
- Keywords:
- Concrete structure, Quality assurance, Check Sheet to Grasp Construction Conditions, Visual evaluation of surface layer, Trial construction
