Abstract
Abstract
In construction industry, selecting a right material from the various alternatives is a critical task in contributing to promote sustainability. For evaluating performance of the material different conflicting attributes are considered which is very complex to make a decision. Focusing on that point, there is a necessity to implement an effective MCDM (Multi-Criteria Decision Making) technique in the building construction which helps the decision makers to choose the feasible sustainable material from the alternatives. The present study explores about the application of Preference Selection Index Method to develop an approach in selecting the optimum Supplementary Cementitious Materials which is called as Sustainable Preference Index (SPI). The foremost concern in the study is to optimize the use of SCM’s as a substitute for cement in Self Compacting Concrete (SCC) to assess sustainable performance by considering technical, environment and ecological traits. To illustrate an approach to develop a Sustainable Preference Index a case study has been considered by varying mineral admixtures such as Fly Ash and GGBS by 10%, 20%, 30%, 40% replacement of the mass of cement in SCC. From different available SCC mixes, the possible alternate in Self Compacting Concrete can be identified based on Sustainable Preference Index value which indicates sustainable performance. Among the FA and GGBS based Self Compacting Concrete mixes, 40GGBS-SCC has attained the highest Sustainable Preference Index (SPI) value. For 40GGBS-SCC the SPI value obtained is 0.891 whereas for 100OPC-SCC it is 0.740. From the SPI values attained, it can be concluded that 40GGBS-SCC is 20.4% more sustainable than the 100OPC-SCC.