Abstract
This paper discusses the life-cycle cost assessment of concrete structures on the basis of durable repair technology from an environmental impact perspective. First, the five stages of concrete durability development are analyzed, and important influential factors are proposed. Second, a traditional model of life-cycle cost calculations is adopted for a comparison of the assessment results based on a case study. Two repair solutions for a degraded concrete structure in a coastal region of China are appraised by considering the environmental costs. To analyze the environmental impact, carbon emission is introduced as an environmental variable. The results of the assessment reveal that environmental cost has a significant influence on the selections of repair solutions. The life-cycle cost analysis of marine concrete structures is complex and dynamic and is influenced by many factors. Among the many influential factors, carbon emission is the one of most important and requires increased attention.
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