Publication: Development of self-compacting concrete using contrast constant factorial design
No Thumbnail Available
Date
2013
Authors
Alqadi A.N.S.
Bin Mustapha K.N.
Naganathan S.
Al-Kadi Q.N.S.
Journal Title
Journal ISSN
Volume Title
Publisher
King Saud University
Abstract
The objective of this study is to determine if adjustment of the four factors viz. cement content (C), water to powder (w/p) ratio, fly ash (FA) content, and superplasticizer (SP) will increase the compressive strength of self-compacting concrete (SCC) by using contrast constant factorial design and response surface methodology. The method of the analyzing 2k factorial design that is a design with k factors each at two levels was used with 16 factorial points. It is concluded that the interactions of the parameters of a couple effect of C with SP, w/p with SP, FA with SP, and C with FA and SP in a full quadratic model are the only significant effects and the underlying assumptions of the analysis are satisfied. In maximizing compressive strength, variables such as cement content A or x1, water to powder ratio B or x2, fly ash content C or x3, and super plasticizer dosage D or x4 should be at a high level of significance and the process is relatively robust (exhibiting strength) to superplasticizer D. � 2012
Description
Keywords
Compressive strength , Factorial design , Response surface methodology , Self-compacting concrete , Slump flow , Cements , Fly ash , Powders , Self compacting concrete , Surface properties , Cement content , Couple effects , Factorial design , Fly ash content , Quadratic modeling , Response surface methodology , Slump flow , Superplasticizers , Compressive strength