A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
EXPERIMENTAL INVESTIGATION AND NUMERICAL SIMULATIONS ON STEEL ELEMENTS PROTECTED WITH INTUMESCENT COATING
Intumescent coatings (IC) have long been used as effective methods for longterm passive fire protection for buildings. However, much is still unknown about these coatings. IC react under the influence of fire and swell to many times their original thickness, producing an insulating char that protects the substrate from the effects of the fire (damage or excessive deformation). Its role is also to provide a smooth, aesthetically pleasing finish, which is durable and easy to maintain. In the current international framework for designing of structures in case of fire, the performance based approach is provided (Fire Safety Engineering,FSE). The performance based approach consists of detailed analysis of the fire,considering natural fire curves, which combine more sophisticated calculation(advanced methods) for structural models. In order to perform rigorous and realistic analyses on structures protected with IC, thermal properties of IC should be known. Nevertheless, the thermal characterization of these systems is not available. Hence, experimental tests at high temperature should be performed. The aim of this work is to provide a thermal characterization of reactive protective (IC), which can be used in advanced calculations. This aspect is important to predict the behaviour of IC , to optimize the experimental tests and to increase reliability. Moreover the thermal characterization of IC is useful to design an intervention of IC fire protection with performance-based approach and not only with prescriptive-based approach. So, in order to investigate the different fire phenomena that can affect the IC performance and their behaviour under different fire conditions, two sets of experiments representing different types of heating exposure were conducted for different water based IC. In the first set of experiments, in furnace, steel plates were exposed to ISO834 and Smouldering fire curves with different initial heating rates. The steel specimens were steel plates with three different section factors protected by ...
EXPERIMENTAL INVESTIGATION AND NUMERICAL SIMULATIONS ON STEEL ELEMENTS PROTECTED WITH INTUMESCENT COATING
Intumescent coatings (IC) have long been used as effective methods for longterm passive fire protection for buildings. However, much is still unknown about these coatings. IC react under the influence of fire and swell to many times their original thickness, producing an insulating char that protects the substrate from the effects of the fire (damage or excessive deformation). Its role is also to provide a smooth, aesthetically pleasing finish, which is durable and easy to maintain. In the current international framework for designing of structures in case of fire, the performance based approach is provided (Fire Safety Engineering,FSE). The performance based approach consists of detailed analysis of the fire,considering natural fire curves, which combine more sophisticated calculation(advanced methods) for structural models. In order to perform rigorous and realistic analyses on structures protected with IC, thermal properties of IC should be known. Nevertheless, the thermal characterization of these systems is not available. Hence, experimental tests at high temperature should be performed. The aim of this work is to provide a thermal characterization of reactive protective (IC), which can be used in advanced calculations. This aspect is important to predict the behaviour of IC , to optimize the experimental tests and to increase reliability. Moreover the thermal characterization of IC is useful to design an intervention of IC fire protection with performance-based approach and not only with prescriptive-based approach. So, in order to investigate the different fire phenomena that can affect the IC performance and their behaviour under different fire conditions, two sets of experiments representing different types of heating exposure were conducted for different water based IC. In the first set of experiments, in furnace, steel plates were exposed to ISO834 and Smouldering fire curves with different initial heating rates. The steel specimens were steel plates with three different section factors protected by ...
EXPERIMENTAL INVESTIGATION AND NUMERICAL SIMULATIONS ON STEEL ELEMENTS PROTECTED WITH INTUMESCENT COATING
de Silva, Donatella (author)
2017-12-10
de Silva, Donatella (2017) EXPERIMENTAL INVESTIGATION AND NUMERICAL SIMULATIONS ON STEEL ELEMENTS PROTECTED WITH INTUMESCENT COATING. [Tesi di dottorato]
Theses
Electronic Resource
Italian , English
DDC:
624
Temperature evaluation in steel fire protected elements with intumescent coating
| BASE | 2010
| Emerald Group Publishing | 2015
| BASE | 2019