Durability Assessment of Concrete with Class-F Fly Ash by Chloride Ion Permeability

• Published in: International journal of recent technology and engineering Vol. 8; no. 4; pp. 8831 - 8836
• Main Authors: Rao, M. Kanta, Kumar, Dr. Ch. Naga Satish
• Format: Journal Article
• Language: English
• Published: 30.11.2019
• ISSN: 2277-3878; 2277-3878
• DOI: 10.35940/ijrte.D9470.118419

This paper discusses on Rapid Chloride Permeability Test investigations on penetration of chloride ions included with replacement of cement by flyash material. By weigth of cement, the fly ash content is replaced from 0% to 60%. Concrete mixes with different binder content varies from 350, 400 and 450 kg/m3 were proportioned with different water binder(w/b) ratios = 0.4, 0.45 and 0.50. Specimens were casted and tested for 28 days. For all the combinations, RCPT was carried out and the charge passed through the specimens was noted. Rapid Chloride Permeability Test value of concrete without fly ash was found to be more than the concrete with fly ash. The Rapid Chloride Permeability Test values are found to be decreased if the percentage of flyash increases. The reason could be the pozzolanic reaction products (CSH) fill the pores between the cement pastes and cause a denser concrete matrix, resulting in better durability. Hence, it can be suggested that the fly ash concrete up to 50% replacement can be used for variety of applications.