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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/11932
Title: Multi-response optimization of post-fire residual compressive strength of high performance concrete
Authors: Rahim A.
Sharma U.K.
Murugesan, Krishnan
Sharma A.
Arora P.
Published in: Construction and Building Materials
Abstract: This paper presents results of an experimental study undertaken to optimize the residual compressive strength of heated high performance concrete using the Taguchi off-line method and the utility concept. The design of experiments (DoEs) was first carried out by Taguchi method using a standard L 9(34) orthogonal array (OA) of four factors with three material parameter levels. The factors considered in the context of high performance concrete were cement content, fly ash content, super-plasticizer content and fine aggregate content. The cube specimens were cast and heated up to 200 °C, 400 °C, 600 °C and 800 °C target temperatures. They were subsequently tested under axial compressive loads in cooled conditions. Based on the results, the material parameter responses were analyzed by utility concept to reduce the multi-characteristic response and to obtain single setting of optimized parameters in order to maximize the post-fire residual compressive strength of concrete. The results indicate that the best level of control factors paid their own contribution for compressive strength at various elevated temperatures. The cement content was found to be the most influencing parameter followed by fine aggregate content and fly ash dosage. The role of chemical admixture dosage was observed to be relatively less marked on the residual compressive strength of high performance concrete. The confirmation tests corroborated the theoretical optimum test conditions. © 2012 Elsevier Ltd. All rights reserved.
Citation: Construction and Building Materials (2013), 38(): 265-273
URI: https://doi.org/10.1016/j.conbuildmat.2012.08.048
http://repository.iitr.ac.in/handle/123456789/11932
Issue Date: 2013
Keywords: Compressive strength
Elevated temperature
High performance concrete
Optimization
Taguchi method
Utility concept
ISSN: 9500618
Author Scopus IDs: 55366165000
23036840200
55065467100
55366612300
55435505300
Author Affiliations: Rahim, A., Department of Civil Engineering, Indian Institute of Technology Roorkee, India
Sharma, U.K., Department of Civil Engineering, Indian Institute of Technology Roorkee, India
Murugesan, K., Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, India
Sharma, A., Reactor Safety Division, BARC, Mumbai, India
Arora, P., Reactor Safety Division, BARC, Mumbai, India
Funding Details: The authors thankfully acknowledge the financial support received from Board of Research in Nuclear Sciences (BRNS) – Mumbai, India for conducting this research.
Corresponding Author: Rahim, A.; Department of Civil Engineering, Indian Institute of Technology RoorkeeIndia; email: errahim@gmail.com
Appears in Collections:Journal Publications [CE]
Journal Publications [ME]

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