Hamish Pope and Ehab Zalok
Hamish Pope, PhD Candidate, Department of Civil and Environmental Engineering, Carleton University, 1125 Colonel By Dr, Ottawa, ON K1S 5B6, hamishpope@carleton.ca
Ehab Zalok, Professor, Department of Civil and Environmental Engineering, Carleton University, 1125 Colonel By Dr, Ottawa, ON K1S 5B6, EhabZalok@carleton.ca
ABSTRACT
There are many new tests being done to improve the physical properties of concrete and concrete masonry by changing the concrete mix design. These new mix designs create concrete with
different thermal properties, which may improve or reduce the total fire resistance of the material. Determining the effects of these new mix designs on the overall change in fire resistance is important for deciding on the real-world efficacy of those new mix designs. In order to accomplish this, the findings from several tests using novel mix designs were collated, investigated, and analysed, then a thermal model of a concrete masonry unit was created within Abaqus in order to determine the new fire resistance of the novel mix designs in terms of their insulation failure criteria. The mix designs focus mainly on the use of recycled materials such as rubber, fly ash, or recycled concrete aggregate. These new mix designs are compared to traditional mix designs, and
recommendations based on the findings are given.
KEYWORDS: concrete masonry, elevated temperatures, fire resistance, mix design, modelling
