A Study on Compatibility of Super Plasticizers with GGBS Blended Cement Concrete using OPC 53-S
|International Journal of Engineering Trends and Technology (IJETT)||
|© 2017 by IJETT Journal|
|Year of Publication : 2017|
|Authors : Veena.P, Ramakrishna.N, Prof.S.Rao.A
|DOI : 10.14445/22315381/IJETT-V50P227|
Veena.P, Ramakrishna.N, Prof.S.Rao.A "A Study on Compatibility of Super Plasticizers with GGBS Blended Cement Concrete using OPC 53-S", International Journal of Engineering Trends and Technology (IJETT), V50(3),173-179 August 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group
This paper presents the flow behavior of super plasticized ordinary Portland cement of specially graded (OPC 53-S) which is controlled by the dispersion of cement particles using super plasticizers. The blended special graded cement with ground granulated blast furnace slag (GGBS) is being used quite commonly instead of pure special cement due to later non availability of cement and to improve the durability of concrete. The flow behavior of cement paste with different chemical composition such as SP1 and SP2 of PCE (Polycarboxylic ether) based super plasticizer (SP) and dosage of super plasticizers is optimized by conducting marsh cone test. The evaluation of the effectiveness of plasticizers is also reviewed. The factor which controls the compatibility, the presence of minerals and chemical admixtures and the proportion of concrete were discussed clearly. This study also includes mechanism of concrete, reduced rate of strength gain, loss of workability, change in long term behavior and alternation of setting behavior are the specific issues of incompatibility. It is mainly observed that as the percentage of GGBS replacement increases, the optimum dosage of super plasticizer decreases to achieve the desired workability. The target mean strength of M40 grade concrete is achieved using 35% GGBS with PCE based super plasticizer.
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Super plasticizer, Marsh cone test, Saturation dosage, Setting time, Loss of slump.