Related Experiment Video
Updated: Apr 15, 2026

Experimental Methodology for Estimation of Local Heat Fluxes and Burning Rates in Steady Laminar Boundary Layer Diffusion Flames
Published on: June 1, 2016
Testing of action of direct flame on concrete
Lenka Bodnarova1, Jaroslav Valek1, Petr Novosad1
1Faculty of Civil Engineering, Brno University of Technology, Institute of Technology of Building Materials and Components, Veveri 331/95, 602 00 Brno, Czech Republic.
Abstract:
The paper states results of experimental exposition of concrete test specimens to direct flame. Concrete test specimens made from various mixtures differing in the type of aggregate, binder, dispersed reinforcement, and technological procedure were subjected to thermal load. Physicomechanical and other properties of all test specimens were tested before exposition to open flame: density, compressive strength, flexural strength, moisture content, and surface appearance. The specimens were visually observed during exposition to open flame and changes were recorded. Exposed surface was photographically documented before thermal load and at 10-minute intervals. Development of temperature of the specimens was documented with a thermocamera. After exposition to thermal load and cooling down, concrete specimens were visually observed, network of cracks was photographically documented, and maximal depth of spalled area was measured.
Related Concept Videos
Abrasion Resistance of Concrete
One such test is the revolving disc test, where three plates...
Impact Strength of Concrete
Flame Photometry: Lab
Hot Weather Concreting
Mitigating the heat increase in concrete can be economically achieved by shading aggregate stockpiles to prevent heating from solar radiation,...
Fatigue Strength of Concrete
Mass Concreting
To reduce the risk of such cracking, the concrete mix may incorporate low-heat cement and pozzolans to reduce the temperature rise. Pre-cooled angular aggregates and water-reducing admixtures...

