USE OF PLASTICIZERS AND SUPER PLASTICIZERS TO INCREASE THE WORKABILITY OF CONCRETE

ABSTRACT

This paper is an experimental study that seeks to explore the properties of super plasticizers and plasticizer and how their effects change the workability of concrete and also the strength.

A stiff concrete mix with a low water/ cement ratio was compared with a similar mix with a low water/cement ratio but had a super plasticizer and a plasticizer added to see how effective these plasticizers. The plasticizers used were Pozzolith standard and Rheobuild 2000M.

Various tests were carried out and include the slump test, compaction factor test to test the workability of the concrete, compressive strength test and Tensile strength test to see how the plasticizers affected the strength of the concrete mix. The compaction factor and slump test were done on the fresh concrete mix while the Compressive strength and tensile test were done after 7 days and 28 days.

The results show that there was an increase in the workability of the concrete when plasticizers and super plasticizers were added to the mix. Also the 7 day strength and the 28day strength also increased in the concrete mix.

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