TY  - JOUR
T1  - Central Composite Design Models for Workability and Strength of Self-Compacting Concrete
AU - Qadi, Arabi N.S. Al AU - AL-Mattarneh, Hashem AU - Mustapha, Kamal Nasharuddin AU - AL-Kadi, Qahir N.S. 
JO  - Journal of Engineering and Applied Sciences
VL  - 4
IS  - 3
SP  - 177
EP  - 183
PY  - 2009
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2009.177.183
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2009.177.183
KW  - numerical models
KW  -design model
KW  -self-compacting concrete
KW  -statistical models
KW  -Workability
KW  -strength
AB  - A central composite design models was carried out to model the influence of key mixture parameter on fresh and hardened properties affecting the performance of Self-Compacting Concrete (SCC). Such responses included slump flow as a filing ability, L-Box as a passing ability and sieve analysis as resistance to segregation. Thirty-one mixtures were prepared to derive the numerical models and evaluate the accuracy. The models are valid for a wide range of mixture proportioning. The study presents, the derived numerical models that can be useful to reduce the test procedures and trials needed for the proportioning of self-compacting concrete. The qualities of these models were evaluated based on several factors such as level prediction, residual error, residual mean square and correlation coefficients.
ER  -