Zoi Ralli

Zoi Ralli
CTLGroup

Doctor of Philosophy
Concrete Materials Expert

About

10
Publications
5,639
Reads
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43
Citations
Additional affiliations
December 2022 - May 2024
York University
Position
  • Postdoctoral Fellow
February 2024 - December 2024
CIMA+
Position
  • Structural EIT
September 2017 - December 2022
York University
Position
  • Research Assistant
Description
  • Teaching Assistant in - Engineering Mechanics -Mechanics of Materials -Structural Analysis -Computational Methods in Civil Engineering -Introduction to Structural Design -Civil Engineering Materials -Civil Engineering Project
Education
September 2017 - December 2022
York University
Field of study
  • Structural/Civil Engineering
September 2015 - April 2017
Democritus University of Thrace
Field of study
  • Structural/Civil Engineering Materials
September 2010 - November 2015
Democritus University of Thrace
Field of study
  • Structural/Civil Engineering

Publications

Publications (10)
Article
Full-text available
Ultra-high-performance concrete (UHPC) is a recently emerged material with exceptional durability and ductility. While widely used in bridge retrofitting, particularly to replace expansion joints and deck overlays, UHPC has seen limited use in jacketing piers for the improvement of lateral load resistance. It presents superior mechanical properties...
Conference Paper
Full-text available
New cementitious materials with outstanding durability and tension-hardening response, such as Ultra-High Performance Concrete (UHPC), have already been introduced extensively in Bridge Retrofitting, primarily where the wear of deck and expansion joints required replacement with longer-term solutions. Due to their impressive mechanical properties a...
Article
In light of the effort for decarbonization of the energy sector, it is believed that common geopolymer binding materials such as fly ash may eventually become scarce, and new geological aluminosilicate materials should be explored as alternative binders in geopolymer concrete. A novel, tension-hardening geopolymer concrete (THGC) that incorporates...
Article
Full-text available
With the addition of electrically conductive steel or carbon fibers, Ultra-High-Performance Concrete (UHPC) possesses an intrinsic self-sensing capability. This opens up the possibility of combining the resilience and sustainability of UHPC with the development of self-sensing solutions for structural applications. In this study, the self-sensing b...
Chapter
On account of growing environmental and economic concerns, decarbonization of the concrete industry has become a priority with the development of environmentally friendly building materials to attract both the research community and industry. A class of advanced environmentally friendly building materials is geopolymer mortars. Their production inc...
Conference Paper
Full-text available
Canadian Bridges are particularly vulnerable to corrosion and long-term durability problems initiated by the easy fracture and delamination of concrete under combined stress and climatic exposure. UHPC is an alternative construction material that holds great promise to alleviate many of those durability and strength problems both in new constructio...
Conference Paper
Full-text available
Due to growing environmental and economic concerns associated with conventional building materials, research interest gravitates towards the development of novel environmentally friendly materials as alternatives to conventional Portland cement concrete. Geopolymer concrete is a class of novel advanced and sustainable structural materials that hold...
Conference Paper
Full-text available
Ultra-High-Performance Fibre Reinforced Concrete (UHPFRC) is a novel cementitious material with exceptional mechanical properties (e.g., high tensile resistance, strain hardening after cracking). Interest is focused on the tensile strength and strain ductility of UHPFRC that effectively limit the crack propagation resulting in improved durability....
Article
Full-text available
Purpose – Important differentiating attributes in the procedures used, the characteristic mineral composition of the binders, and the implications these have on the final long term stability and physico mechanical performance of the concretes produced are identified and discussed, with the intent to improve transparency and clarity in the field of...
Conference Paper
Full-text available
The increased use of ultra-high-performance concrete as an alternative to conventional concrete in bridge construction and infrastructure has brought forth the need for reliable assessment of the actual mechanical properties from samples taken during preparation of the mix and in the field during placement of the material. Particular interest is in...

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