A5069702428- Fire effects on concrete materials
- Structural Response to Dynamic Loads
- Concrete and Cement Materials Research
- Engineering and Material Science Research
- Concrete Properties and Behavior
- Fire dynamics and safety research
- Structural Behavior of Reinforced Concrete
- Innovative concrete reinforcement materials
- Advanced ceramic materials synthesis
- Masonry and Concrete Structural Analysis
- Geotechnical Engineering and Underground Structures
- Recycled Aggregate Concrete Performance
- Surgical Sutures and Adhesives
- Innovations in Concrete and Construction Materials
- Composite Material Mechanics
- Recycling and utilization of industrial and municipal waste in materials production
- Thermography and Photoacoustic Techniques
- Advanced Mathematical Modeling in Engineering
- Structural Load-Bearing Analysis
- Engineering Applied Research
- Wood Treatment and Properties
- Civil and Structural Engineering Research
- Lignin and Wood Chemistry
- Facilities and Workplace Management
Centre Scientifique et Technique du Bâtiment
2014-2024
Paris-Est Sup
2013-2016
Summary The behaviour of six concretes at high temperature (600 °C) and in particular the risk fire spalling is studied. Tests are performed with two sizes samples: small samples (300 × 300 120 mm 3 ) slabs (700 600 150 ). Different storage conditions (pre‐drying 80 °C, air water storing) used to highlight effect initial content. Thanks different scenarios heating, influence heating curve Results enabled identify parameters that highly spalling: content concrete permeability during heating....
Concrete thermal instability is observed when a concrete structure totally, or partially, exposed to an accidental fire. This sudden phenomenon, which can appear in the first twenty minutes of fire, called "concrete spalling". Spalling seriously jeopardise stability during fire (loss load-bearing cross section, exposure reinforcement fire) as well after (decrease residual mechanical properties and weaker durability). Moreover, costs repairing damages induced by spalling be very high. Since...
This paper presents some experimental results on the behaviour of concrete at high temperature. The main objective is to analyse influence type aggregates several material properties, and particularly upon thermal instability risk (spalling) concrete. Different levels observations have been chosen: from study small elements for assessment properties temperature slabs fire concretes. Les travaux présentés dans cet article portent sur l'étude du comportement à haute température des bétons. Le...
Mechanical loading is an important parameter of spalling phenomenon likely to occur in concrete during heating. Several tests laboratory have shown increase the risk compressed areas. In this study, a specific metallic frame has been developed apply uniaxial and biaxial stresses on slabs fire tests. Tests carried out ordinary (fc28 = 37 MPa) exposed ISO 834-1 temperature curve with several levels are presented. No was observed when samples were loaded at 0, 5 10 MPa. opposite, compressive...
High-performance concrete (HPC) is one of the most recent types among materials used routinely in building and civil structures. Their development structures applications growing need for justification their fire resistance has led several laboratories to carry out research on properties at high temperature. This letter presents some main aspects related physicochemical changes, thermal mechanical It introduces a State The Art prepared by RILEM Technical Committee 227-HPB (Physical behaviour...
Fire poses one of the most severe environmental conditions that can act on concrete structures as an external load and induce damages (cracks, spalling) or even lead to collapse. spalling is a complex phenomenon, which might occur due pressure build-up in pores, thermal load-induced stresses. In this context, ordinary specimens (B40-II B40-III: fc 28 days ≈ 40 MPa) were exposed standard fire curve (ISO 834-1), while constant uniaxial biaxial compressive was applied. Six different levels...
The article reviews the results of many commercial or research tests carried out in CSTB on middle size concrete slabs. They concern 22 slabs, made normal and high strength concrete, for a rather wide range thickness compressive classes. Test procedures synthesis main are presented order to provide deeper understanding near-reality conditions structures. concerned both new existing tunnels. Results detailed relation with parameters that identified as impacting spalling previous studies, such...