Abstract
Graphene oxide (GO) is identified as the most promising nanomaterial for the improvement in microstructure and mechanical characteristics of cement composites, it decreases the fluidity and hence workability of concrete. The present study is carried out with an aim to improve the fluidity of GO-concrete, mineral additive fly ash is used. The influence of fly ash (as a replacement of cement at 10%, 20%, 30%) and GO (addition at 0.15% by weight of binder) on fluidity, microstructure and strength characteristics of concrete was studied. The experimental results of fluidity measurements revealed that fly ash counteracts the GO effect on the reduction of fluidity. Therefore, fly ash plays a key role to improve fluidity due to its fineness, ball effect and less water demand. GO counteracts the effect of fly ash on delaying strength gain at an early age. It was observed that replacement of fly ash up to 20%, the strengths characteristics are more than control concrete at 7 and 28 days. From the present investigation it is observed that the GO addition and fly ash replacement is an effective and economical approach to attain desired characteristics of concrete.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call