Journal
ENVIRONMENTAL AND CLIMATE TECHNOLOGIES
Volume 25, Issue 1, Pages 58-70Publisher
SCIENDO
DOI: 10.2478/rtuect-2021-0005
Keywords
Avoided burden; construction; green buildings; eco-efficiency; engineered wood products
Categories
Funding
- Forest Sector Competence Centre of Latvia Ltd. [1.2.1.1/18/A/004]
- Central Finance and Contracting Agency [1.2.1.1/18/A/004]
- European Regional Development Fund (ERDF)
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Cross-laminated timber (CLT) and other engineered wood products are expected to experience rapid growth in the coming years as alternatives to concrete and steel structures. By re-processing CLT cuttings, significant reduction in environmental impact can be achieved while creating new CLT panels.
It is expected that Cross-laminated timber (CLT) and other engineered wood products will experience rapid growth in the coming years. Global population growth is requiring more housing units, at the same time the negative impact of construction industry cannot stay in the same level as today. Alternatives for concrete and steel reinforced structures are being explored. CLT has proven to be an excellent substitution for concrete regarding construction of buildings up to eight storeys high. In addition to much lower environmental impact, construction process using CLT takes significantly less time due to pre-cut shapes required for specific project. Despite mentioned benefits, there are considerable amount of CLT cuttings generated in this process. Due to irregular shape and small dimensions of these cuttings they are useless for further use in construction. By applying re-processing technology described in this paper, around 70 % of generated cuttings can be re-processed into new CLT panels. In this paper we are evaluating the environmental benefits of re-processing these cuttings into new CLT panels versus business-as-usual scenario with waste disposal. Life cycle assessment results showed significant reduction of environmental impact for the scenario of CLT cutting re-processing.
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