International Concrete Abstracts Portal

Title: Outline of Recommendations for Durability Design and Construction Practice of Reinforced Concrete Buildings in Japan

Author(s): T. Noguchi, M. Kanematsu, and Y. Masuda

Publication: Special Publication

Volume: 234

Issue:

Appears on pages(s): 347-372

Keywords: carbonation; chloride ion diffusion; durability; freezing and thawing; limit state; performance-based design; standard specification

Date: 3/22/2005

Abstract:
The Architectural Institute of Japan (AIJ) published "Recommendations for Durability Design and Construction Practice of Reinforced Concrete" in March 2004. It was proposed as a model guideline, for the first time specifically dealing with performance-based design in materials and construction field in Japan. A theoretical system was formulated by analyzing and organizing the durability performance of reinforced concrete buildings, based on which a framework of durability design was proposed. The design consists of three routes: "performance-based design - general approach", "performance-based design - special approach" and "standard-specification-based design". The Recommendations are also significant in that they unified the methods of determining the limit states of structures and members in terms of performance such as shear strength, serviceability, restorability, etc. and defined them in relation to the limit states of such materials as reinforcement, concrete and finishing materials. And these limit states are defined at two levels according to the maintenance scheme: maintenance free and regular maintenance. It also provides the standard methodologies to performance verification of the reinforced concrete under such deteriorating environment as carbonation, salt damage, frost damage and so on. And the probabilistic method is proposed for carbonation and salt damage in "performance-based design - general approach".