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Title: Optimization of Lightweight Concrete Process by Gray-Taguchi Method

Author(s): Mariam Farouk Ghazy and Mohamed Fattouh Abd El Hameed

Publication: Materials Journal

Volume: 112

Issue: 3

Appears on pages(s): 365-374

Keywords: crushed shale bricks; gray relational analysis; lightweight concrete; lightweight lime bricks; perlite; polystyrene foam; silica fume

DOI: 10.14359/51687235

Date: 5/1/2015

Abstract:
This study investigated the multi-response optimization of lightweight concrete (LWC) process for an optimal parametric combination to yield favorable compressive strength and density using the Taguchi approach coupled with gray relational analysis (GRA). Sixteen experimental runs based on an orthogonal array of Taguchi method were performed to optimize the process parameters within the experimental domain. The performance characteristics have been selected in relation to parameters of LWC: type of lightweight fine aggregate (LWAFA); replacement ratios of LWA (fine and/or coarse) by volume of normalweight aggregate (NWA); and percentage of foam agent. Optimal results were verified through confirmation experiments. It will be helpful to the engineers in deciding the levels of the LWC parameters for desired performance characteristics.