Multi-scale and multi-physics deterioration modelling for design and assessment of reinforced concrete structures

RILEM Technical Letters

article

Mette R. Geiker¹  Alexander Michel²  Michel D. Lepech³  Jie Wu³  Henrik Stang² 

[1] Norwegian University of Science and Technology, Department of Structural Engineering;Technical University of Denmark, Department of Civil Engineering;Stanford University, Department of Civil and Environmental Engineering

关键词: concrete;    reinforcement corrosion;    multi-scale;    multi-physics;   

DOI  :  10.21809/rilemtechlett.2017.49

学科分类：社会科学、人文和艺术（综合）

来源: RILEM Publications SARL

【 摘 要 】

This paper discusses the need for reliable and valid multi-scale and multi-physics prediction models to support the design of new as well as the assessment, maintenance, and repair of existing reinforced concrete structures. A multi-physics and multi-scale deterioration model for chloride-induced corrosion of reinforced concrete has been established. Ongoing work includes extension of the model to 3D as well as modelling of the impact of the steel-concrete interface characteristics and electrochemical potential on chloride thresholds. Identified challenges include, among others, the improved understanding and modelling of single- and multi-deterioration mechanisms, environmental exposure, and data for validation. We envision that next generation maintenance and management of reinforced concrete infrastructure will combine numerical simulations based on multi-scale and multi-physics principles and extensive in-situ monitoring, allowing continuous Bayesian updating of 4D simulations of functional performance.

【 授权许可】

CC BY