Evaluation of rheological and durability characteristics of sugarcane bagasse ash and rice husk ash based binary and ternary cementitious system. (24th January 2022)

• Record Type: Journal Article
• Authors: Jittin, V.; Bahurudeen, A.
• Is Part Of: Construction & building materials. Volume 317(2022)
• Publication Date: 2022-01-24
• Subjects: Sugarcane bagasse ash -- Rice husk ash -- Rheology -- Ternary cement -- Durability; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2021.125965
• Languages: English
• ISSNs: 0950-0618

Abstract

Graphical abstract: Highlights: Addition of agro-wastes ashes increases yield stress and viscosity of cement paste. Higher yield stress and viscosity are found for ternary cement than binary cement. Ternary concrete with 10% bagasse ash and 5% rice husk ash has highest strength. Reduction in portlandite with the increase in agro-waste ashes content is observed. Resistance to water absorption and chloride ingress is high for ternary concrete. Abstract: Implementation of biomass based power plants is substantially increased worldwide, and hence large quantity of agro-waste ashes is disposed as waste. The reuse of agro-waste ashes as supplementary cementitious materials helps to solve problems associated with intensive carbon emission from cement plants and the disposal of agro-waste ashes. Although earlier studies are reported on the use of sugarcane bagasse ash and rice husk ash as a pozzolan in concrete, studies on their combined use in the production of ternary cement are highly limited. Hence, the present study focuses on the performance evaluation of the sugarcane bagasse ash and rice husk ash based ternary blended cementitious system. The performance of the ternary blended concrete is also compared with sugarcane bagasse ash based binary blended concrete. Rheological characteristics, compressive strength, rapid chloride penetration test, water sorptivity index, and porosity of the blended concrete is investigated. The yield stress, plastic viscosity and consistency index are increased with the increase in the addition of sugarcane bagasse ash and rice husk ash. The highest compressive strength is observed for ternary blended concrete with 10% bagasse ash and 5% rice husk ash, followed by blended binary concrete with 20% bagasse ash. The decrease in portlandite was evidently observed for binary and ternary blended samples with the addition of bagasse ash and rice husk ash using X-ray diffractogram and thermal analysis. Reduction in chloride permeability, water sorptivity index and porosity was observed for agro-waste ashes blended concrete than control concrete.