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Environmental and Economic Evaluation of Small-Scale Bridge Repair Using Cross-Laminated Timber Floor Slabs

https://research.thinkwood.com/en/permalink/catalogue2397
Year of Publication
2020
Topic
Design and Systems
Environmental Impact
Material
CLT (Cross-Laminated Timber)
Application
Bridges and Spans

Life Cycle Regional Economic Impacts of Bridge Repair Using Cross-Laminated Timber Floor Slabs: A Case Study in Akita Prefecture, Japan

https://research.thinkwood.com/en/permalink/catalogue2965
Year of Publication
2022
Topic
Environmental Impact
Material
CLT (Cross-Laminated Timber)
Application
Bridges and Spans
Author
Huzita, Tomohumi
Sasaki, Takanobu
Araki, Shogo
Kayo, Chihiro
Organization
Tokyo University of Agriculture and Technology
Hokkaido University
Publisher
MDPI
Year of Publication
2022
Format
Journal Article
Material
CLT (Cross-Laminated Timber)
Application
Bridges and Spans
Topic
Environmental Impact
Keywords
Regional Economic Impact
Input-output Analysis
Cross-laminated Timber
Waterproofing
Reinforced Concrete
Research Status
Complete
Series
Buildings
Summary
Recently, cross-laminated timber (CLT) has attracted attention as a civil engineering material in Japan. In particular, the use of CLT floor slabs for bridge repair is expected to have regional economic impacts throughout their life cycle, but their economic impacts have not been evaluated. In this study, the life cycle regional economic impacts of using non-waterproofed CLT, waterproofed CLT, and reinforced concrete (RC) floor slabs for bridge repair in Akita Prefecture, Japan, were compared. Using past-to-present input–output tables, we quantitatively evaluated the economic impacts over the life cycle of floor slabs by estimating the future input–output tables for construction, maintenance, and disposal. The results showed that the construction and maintenance costs (final demand increase) of CLT floor slabs are higher than those of RC slabs, but the regional economic impact is larger. In addition, the non-waterproofed CLT must be renewed every time it is maintained. Therefore, the demand for CLT production in the prefecture will increase, and the economic impact will be larger than that of the other two floor slabs. This demand for CLT production will not only redound to the benefit of the forestry and wood industry but also the revitalization of regional economies.
Online Access
Free
Resource Link
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