|Table of Contents|

Carbonation Model and Structural Durability Design for Recycled Concrete(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2008年03期
Page:
66-72
Research Field:
Publishing date:
2008-09-20

Info

Title:
Carbonation Model and Structural Durability Design for Recycled Concrete
Author(s):
XIAO Jian-zhuang;  LEI Bin
Department of Architectural Engineering, Tongji University, Shanghai 200092, China
Keywords:
recycled concrete;  carbonation model;  structural durability design;  reliability ana-lysis;  minimal thickness of recycled concrete cover of reinforcement
PACS:
TU528.57
DOI:
-
Abstract:
Based on the investigation of available achievements on carbonation of recycled concrete and concrete carbonation test data at home and abroad, the calculation model of recycled concrete carbonation depth was established and the limit state method and the partial safety factor method for recycled concrete structures were put forward. The reliability analysis of service life for recycled concrete beams was undertaken. Results show that the increase of compressive strength grades of recycled concrete and thickness of recycled concrete cover can improve the durability life of recycled concrete structures remarkably; while stress state of recycled concrete and the placement of reinforcing bars will have significant effects on the durability life of recycled concrete structures. Comprehensively considering the effect extent of carbonation-initiated corrosion of reinforcement on the functionality of recycled concrete structures and the different stress states of recycled concrete elements, the minimal thickness of recycled concrete cover of reinforcement in recycled concrete elements was proposed in Shanghai area.

References:

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Last Update: 2008-09-20