... on the spalling phenomenon of concrete elements when exposed to elevated temperatures and fires. Design/methodology/approach In this context, it has been long established that prolonged thermal insult on concrete members will lead to egress of water, both physically bound as well as those present as water...

... standard fire curve. Compressive strength, tensile strength, thermal crack pattern and spalling of heated concrete specimens were evaluated by experimental investigation. Scanning electron microscopy and thermo-gravimetric analysis were performed to investigate the microstructure properties of heated...

...Hitesh Lakhani; Jan Hofmann Purpose The paper aims to present an advanced 2 D transient heat transfer analysis capable of accounting for the effect of spalling in terms of amount, location and time. The model accounts for moving thermal boundary conditions to comply with the changing member cross...

...Li Zhang; Ya Wei; Francis Tat Kwong Au; Jing Li Purpose This study aims to investigate the influence of tendon layout, pre-stressing force, bond condition and concrete spalling on the structural behaviour of two-way post-tensioned flat slabs at elevated temperatures. Design/methodology/approach...

... and tensile properties of heat treated specimens were determined. Findings The colour of concrete started to change at 300°C and hairline cracks appeared at 400°C. Explosive spalling was observed in few specimens in the temperature range of 400°C-650°C which could be attributed to the pore pressure...

...C. Kahanji; F. Ali; A. Nadjai Purpose The purpose of the study was to investigate the spalling phenomenon in ultra-high performance fibre reinforced concrete (UHPFRC) beams on exposure to a standard fire curve (ISO 834) under a sustained load. Design/methodology/approach The variables...

...Mitsuo Ozawa; Zhou Bo; Yuichi Uchida; Hiroaki Morimoto This paper investigates the relationship between spalling behavior and weight loss for ultra-high-strength fiber-reinforced concrete (UFC) containing different types short fibers (jute, PP, WSPVA) in high-temperature environments at 400, 600...

.../Consolidating Concrete - SCC, Light-Weight Concrete - LWC, shotcrete and high-strength mortars. It is shown that these materials can be "tailored" according to a variety of requirements and functions, even if several aspects of their behavior (like spalling in fire and long-term mechanical properties under...

... for Prestressed Concrete Journal of PCA Research and Development Laboratories 3 8 19 Zhang, H. Davie, C.T. Pearce, C.J. and Bicani, N., A Numerical Model for Prediction of Spalling of Concrete Exposed to Elevated Temperatures, Proceedings of the International Conference Applications of Structural...

... is likely to induce premature tendon rupture during fire, even in structures which meet the prescriptive concrete cover requirements imposed by available design codes. Prestressing steel Post-tensioned slabs Unbonded construction Fire endurance testing Spalling Concrete Concrete cover High...