Effect of Multiwalled Carbon Nanotubes  On Mechanical Properties of Concrete

Dr.T.Ch.Madhavi; Pavithra.P; Sushmita Baban Singh; S.B.Vamsi Raj; Surajit Paul

Volume : II, Issue : VI, June - 2013

Effect of Multiwalled Carbon Nanotubes On Mechanical Properties of Concrete

Dr. T. Ch. Madhavi, Pavithra. P , Sushmita Baban Singh, S. B. Vamsi Raj, Surajit Paul

Abstract :

This paper discusses the effect of multiwalled carbon nanotubes (CNT) on strength characteristics and durability of concrete. Sonication process is carried out by adding MWCNT with surfactants (super plasticizers - polycarboxylate 8H), 0.25% by weight of cement and also with water. 36 Specimens with MWCNTs of 0.015%, 0.03% and 0.045% of cement (by weight) were tested after 28 days of curing. Results show an increase in compressive and splitting-tensile strengths of the samples with increasing MWCNT. 0.045% of MWCNT has improved the 28 days compressive strength by 27 % while the split tensile strength increased by 45%. Crack propagation was reduced and water absorption decreased by 17% at 28 days curing.