Dr. Faiz Uddin Ahmed Shaikh
Dr. Faiz Uddin Ahmed Shaikh
Curtin University, Perth, Australia
Title: Strain hardening behaviour of geopolymer based fibre reinforced composites
Short fibre reinforced cementitious composites exhibiting strain hardening and multiple cracking behaviour with very fine crack width properties is the most significant development in the field of fibre reinforced concrete in last few decades. Extensive research on its micromechanical mechanism of fibre, matrix and fibre/matrix interface properties have been conducted by numerous researchers around the world for better understanding of this its numerous mechanical and durability properties. However, due to high volume use of ordinary Portland cement (OPC) based binder in this composite, its low environmental friendliness is limiting its application in real situation despite its huge potential. In this presentation a new development of above composite is presented by completely replacing OPC binder using alkali activated fly or fly ash/slag based binder, which is often termed as strain hardening geopolymeric composite (SHGC). Current development of this new composite by considering various types of fibres e.g. steel, PVA and PE, types of geopolymer binders e.g. fly ash based, slag based and fly ash/slag blended, effect of various alkali activators and their concentrations, etc. are discussed. Its various mechanical properties including strain hardening and deflection hardening behaviour in uni-axial tension and bending, fibre/geopolymer matrix interface properties and fracture behaviour of geopolymer matrix of this newly developed composite will be discussed. The application of existing micromechanical model for OPC based composite to design the strain hardening behaviour of this geopolymeric composite is also presented.
Dr.Faiz Uddin Ahmed Shaikh is serving as Associate Professor in School of Civil and Mechanical Engineering of Curtin University, Australia.He received his Ph.D. degree in civil engineering from the National University of Singapore (NUS) in 2005. He received his M. Eng. from the Asian Institute of Technology, Bangkok, Thailand in 1998 and B.Sc. (Civil) Eng. from Khulna University of Engineering and Technology, Bangladesh in 1994. He held a prestigious post-doctoral fellowship by Japan Society for the promotion of science for two years after completion of his Ph.D. His research focus on the development of sustainable binder by incorporating high volume fractions of industrial by-products as partial replacement of OPC and nano and ultrafine materials, use of recycled aggregates in sustainable concrete, development of ductile fibre reinforced geopolymer composites, behaviour of geopolymer based composite in fire and natural fibre reinforced composites. He is a Chartered profession engineer (CPEng.) of Australia, fellow of Engineers Australia (FIEAust) and member of Concrete institute of Australia. He has supervised 6 PhD and 2 MPhil students and currently supervising 3 PhD students. His has about 155 refereed publicationsincluding one book published in Springer, four book chapters, 103 reviewed journal papers and 47 reviewed conference papers in his credit. He also holdsan h-index of 27 and total citations of about 1830 according to Google scholar. He is a regular reviewer of various prestigious international journals out of which he is awarded “outstanding reviewer” by journal of construction and building materials in 2014 and 2016. He is also recipient of “certified sentinel of science award” for top 10% of reviewers in Engineering by Publons. He is also awarded about A$0.75M competitive grant by various research organisations and industries including Australian Research Council (ARC), Japan Society for the Promotion of Science (JSPS), Waste Authority of Western Australia, etc.