Yoyok Setyo  Hadiwidodo, Sabarudin Bin  Mohd, 
    Effect Superplasticizer and Water-Binder Ratio on Freshened Properties and Compressive Strength of SCC,
    Journal of Engineering and Applied Sciences,
    Volume 4,Issue 3,
    2009,
    Pages 232-235,
    ISSN 1816-949x,
    jeasci.2009.232.235,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2009.232.235)
    Abstract: This study presents, the results of an experimental research carried out to investigate the use of tests performed in effectiveness of superplasticizer and water-binder ratio for Self-Compacting Concrete (SCC). The materials employed were cement, silica fume, sand as fine aggregate, a maximum 14 mm diameter coarse aggregate and a policarboxylate based superplasticizer. In this study, four mixtures with variation of superplasticizer, four mixtures with variation of water-binder ratio and one mixture for control were investigated. Several tests such as slump flow, slump flow time (T<SUB>50</SUB>) and J-ring were carried out to determine freshened properties of SCC. Performance of hardened concrete was determined by classical strength test. The compressive strengths at 3, 7 and 28 days were measured. Test results indicate that the slump-flow values of the SCC mixtures were measured between 650-800 and 550-650 mm for variations of superplasticizer and water-binder ratio, respectively. The slump flow time (T<SUB>50</SUB>) was measured when, the concrete was slumping until it reached 500 mm of flow. Flow time (T<SUB>50</SUB>) increase with increasing of water-binder content. However, it is decrease with increasing of superplasticizer content. A lower superplasticizer and W/B ratio leads to a higher strength but lower workability and vice versa.
    Keywords: self compacting concrete;compressive strength;Freshened properties;superplasticizer;water-binder ratio;workability