MULTI-CRITERIA OPTIMAL DESIGN METHODOLOGY FOR DURABLE RC MEMBERS IN CORROSIVE ENVIRONMENTS -AN EXPERIMENTAL INVESTIGATION
The problem of searching for an optimal-design of durable reinforced concrete (RC)structural members in corrosive environments is a multi-dimensional one that can be solvedsatisfactorily only if all design variables are accounted for in a measurable and unified format.To this end,a design methodology would require: (1) simultaneous optimization of concretemix proportioning to minimize design-costs of concrete while satisfying principal requirementsfor strength,and durability,and (2) definition and incorporation of a target service structurallife as a design constraint. It is however noted that in the available literature on designs fordurable RC structural members,the issues of structural durability and design economy havenot been studied in an integral format. These two design considerations in corrosive environ-ments are implicitly inter-related in a rather complex manner and a meaningful (unified)design methodology should account for the multi-criteria design relationships. Based on identification of most influential design variables for RC structures,this paper ismainly intended to: (1) report a review of key previous studies on corrosion-rate measurementsof steel-bar embedded in a concrete matrix exposed to simulated corrosive conditions,and(2) outline the methodology of current research activities that aim at developing a multi-criteria approach for optimal design of durable RC members in chloride contaminatedenvironments,and provide an overview of sample initial results obtained.
multi-criteria optimal design RC durable designs RC design service life
Saeid A. Alghamdi Shamsad Ahmad
Department of Civil Engineering,King Fahd University of Petroleum and Minerals,Dhahran,Saudi Arabia
国际会议
The International Conference on Durability of Concrete Structures(2008年混凝土结构耐久性国际学术会议)
杭州
英文
851-860
2008-11-01（万方平台首次上网日期，不代表论文的发表时间）