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  Scopus ID: 21100926589

Substitutive Effect of Cellulose Nanofibers for Cement in High Performance Concrete

Sreeja Mallika Dhanapalan and Dr. Nataragan Nalanth
 

Abstract

Plain concrete has a very low tensile strength, a little amount of ductility, and little crack resistance. Internal microcracks are a natural component of concrete, primarily as a result of drying shrinkage, and when these microcracks spread, the concrete becomes brittle and has a weak tensile strength. Concrete’s static and dynamic qualities will be enhanced by the addition of nanofibers, which will prevent the emergence of microcracks. In a study, nanocellulose fibers were used to strengthen High Performance Concrete (HPC) to improve durability. The benefits of alternative micro- and nano-fiber reinforcing methods could be achieved with fibers at a significantly lower cost. The impact of various reinforcing schemes on the processing variables and mechanical characteristics of a concrete mixture were empirically investigated. Notched-beam tests were conducted with crack mouth opening displacement control in order to evaluate fracture energy under stable crack-growth conditions. According to preliminary data, adding 3% micro and nano-fibers increased the fracture energy by more than 50% as compared to the unreinforced material with barely any changes to the processing method. Preliminary data show that, with hardly any modifications to the processing technique, the addition of 3% micro- and nano-fibers enhanced the fracture energy by more than 50% when compared to the unreinforced material.

Published on: October 27, 2023
doi: 10.17756/nwj.2023-123
Citation: Dhanapalan SM, Nalanth N. 2023. Substitutive Effect of Cellulose Nanofibers for Cement in High Performance Concrete. NanoWorld J 9(4): 120-126.

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