Development of self-compacting concrete using contrast constant factorial design

Arabi N.S. Alqadi, Kamal Nasharuddin Mustapha, Sivakumar Naganathan, Qahir N.S. Al-Kadi

Research output: Contribution to journalArticle

11 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)105-112
Number of pages8
JournalJournal of King Saud University - Engineering Sciences
Issue number2
Publication statusPublished - Jul 2013


All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science (miscellaneous)
  • Fuel Technology
  • Fluid Flow and Transfer Processes
  • Computer Networks and Communications
  • Industrial and Manufacturing Engineering

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