Title : OPTIMIZATION OF CLASS C FLYASH DOSAGE IN SELF COMPACTING CONCRETE FOR PAVEMENT APPLICATIONS
Authors : Abhijeet S. Gandage*, V. Vinayaka Ram, M. V. N. Sivakumar, A. Vasan, M. Venu, A. B. Yaswanth
Publication : 23 - 26 October 2013
Volume :
Pages :
Price : 250
Abstract : Self compacting concrete is a high performance concrete that flows under its own weight without any external vibration. High cement content and use of high range water reducing (HRWR) superplasticizers are the main differentiating factors of SCC as compared to normal concrete. However, these factors make SCC a costly option. SCC mix design can be admixture based or powder based. Powder-based mix design of SCC, helps achieve a cohesive mix with good segregation resistance and flow properties at lower superplasticizer dosage, thereby ensuring economy. An experimental programme has been undertaken to optimize Class C flyash dosage as a cement replacement material for M-40 grade of SCC produced with manufactured sand. The results of fresh state properties (slump flow and J-Ring test) as well as hardened state properties (non-destructive tests, viz. Schmidt Hammer and Ultrasonic Pulse Velocity Test as well as compressive strength test at 3 days, 7 days, 28 days and 90 days along with flexural strength test at 7 days and 28 days) are presented in this paper. Further, an attempt has been made to validate the experimental results mathematically using Artificial Neural Networks. This paper is an attempt to present and discuss the results obtained in the study.