Use Of LCA As A Decision Method In The Optimization Of Construction Process

The paper reports on the use of Life Cycle Analysis (LCA) as a decision method in the selection of construction materials and optimization of construction processes. The main features of the method and the LCA tool used are outlined. A case study of a reinforced concrete wall cast in situ is presented. A sensitivity analysis was conducted by selecting different concrete constituent materials. The results clearly show their major influence upon the environmental parameters, and, in particular, energy use and global warming. The study also addresses the impact upon the environmental parameters of different relative location scenarios; however, this impact for the transportation of the various materials to the construction site is minor, when compared to that due to the production of the constituent materials. Cement is the single most important component in terms of environmental impact.