Abstract
High-strength concrete with a design strength of more than 100N/mm2 has recently been applied practically to prestressed concrete bridges. Adopting high-strength concrete for prestressed concrete bridges enables lighter members, reduction in seismic force, use of longer spans, reduction in girder height and improved durability. Therefore, high value-added or high performance structures that cannot be realized with ordinary concrete can be constructed. However, no adequate design and construction guidelines for high-strength concrete have been established in Japan for prestressed concrete structures. Developing design and construction guidelines promptly is therefore required for the effective design and construction of prestressed concrete structures with high-strength concrete. Based on this background, the Japan Prestressed Concrete Engineering Association set up a committee on “Design and Construction for Prestressed Concrete Structures Using High-strength Concrete” in 2006 and the "Guidelines for Design and Construction of High-strength Concrete for Prestressed Concrete Structures" has just been published in October 2008. This paper presents an outline of the above-mentioned guidelines.
