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RESEARCH ARTICLE

Effect of Elevated Temperatures on Sugarcane Bagasse Ash-Based Alkali-Activated Slag Concrete D. S. Sandeep Kumar1,2 • K. Chethan2 • B. Chethan Kumar3

Received: 31 May 2020 / Accepted: 18 September 2020 Ó Society for Sugar Research & Promotion 2020

Abstract The main focus of researchers in construction sector is to check suitability of ecofriendly alternative materials. Sugarcane bagasse ash (BA) and steel slag (SS) is one among such ecofriendly alternative materials. BA and SS has potential to utilize as binder and coarse aggregate, respectively, in concrete production. In the present investigation, BA and SS were utilized in alkaliactivated slag/bagasse ash concrete (AASBC) mixture production. Full factorial experimental design was considered with two input variables, i.e., BA (0, 25, and 50%) and SS (0, 50, and 100%) as replacement to ground granulated blast furnace slag and natural coarse aggregate, respectively. Effect of elevated temperatures on BA and SS-based AASBC mixture were examined. Field emission scanning electron microscope study were carried out to check the morphological changes in ambient and elevated temperature condition. In order to rank different BA and SS-based AASBC mixture performance multi-criteria optimization techniques like, grey relational analysis, technique for order preference by similarity to ideal solution, and desirability function approach were utilized. AASBC mixture with 25% BA content and 100% SS content found to be most suitable AASBC mixture based & B. Chethan Kumar [email protected] 1

Department of Civil Engineering, People’s Education Society (PES), College of Engineering, Mandya, Karnataka 571 401, India

2

Department of Civil Engineering, University Visvesvaraya College of Engineering (UVCE), Gnana Bharathi Campus, Bengaluru, Karnataka 560 056, India

3

Department of Civil Engineering, National Institute of Technology Karnataka (NITK), Surathkal, Mangalore 575 025, India

on multi-criteria optimization technique under elevated temperature conditions. Keywords Sugarcane bagasse ash
Ground granulated blast furnace slag
Alkali-activated slag concrete
Elevated temperature
Residual compressive strength

Introduction Due to the rapid decrease in natural resources, conservation of natural resources is an important concern. Researchers are mainly concentrating to reduce the use of natural resources and utilization of alternative materials for the construction. Use of alternative materials will help in minimizing depletion of natural resources. Alternative materials should be checked against physical and chemical properties for its suitability to replace natural resources. The main focus of the present paper is also one of its kind to check suitability of alternative materials. Alternative materials can be either manufactured artificially or industrial by-products. One such industrial by-products can be from iron and steel or agro-based industries. Utilization of industrial by-product will indirectly help in reducing ecological problems like,