scholarly journals Compressive softening and failure of basalt fibre composites in fire: Modelling and experimentation

2017 ◽  
Vol 165 ◽  
pp. 15-24 ◽  
Author(s):  
T. Bhat ◽  
E. Kandare ◽  
A.G. Gibson ◽  
P. Di Modica ◽  
A.P. Mouritz
Keyword(s):  
Basalt Fibre ◽  
Fire Modelling ◽  
Fibre Composites ◽  
In Fire

scholarly journals Unexpected Oscillations in Fire Modelling Inside a Long Tunnel

2020 ◽  
Vol 56 (5) ◽  
pp. 1937-1941
Author(s):  
Chin Ding Ang ◽  
Guillermo Rein ◽  
Joaquim Peiro
Keyword(s):  
Fire Modelling ◽  
In Fire

scholarly journals The status and challenge of global fire modelling

2016 ◽  
Author(s):  
S. Hantson ◽  
A. Arneth ◽  
S. P. Harrison ◽  
D. I. Kelley ◽  
I. C. Prentice ◽  
...  
Keyword(s):  
Atmospheric Chemistry ◽  
Fire Regime ◽  
Fire Regimes ◽  
Climate Projections ◽  
Data Sets ◽  
Predictive Skill ◽  
Current State ◽  
Fire Modelling ◽  
The Status ◽  
In Fire

Abstract. Biomass burning impacts vegetation dynamics, biogeochemical cycling, atmospheric chemistry, and climate, with sometimes deleterious socio-economic impacts. Under future climate projections it is often expected that the risk of wildfires will increase. Our ability to predict the magnitude and geographic pattern of future fire impacts rests on our ability to model fire regimes, either using well-founded empirical relationships or process-based models with good predictive skill. A large variety of models exist today and it is still unclear which type of model or degree of complexity is required to model fire adequately at regional to global scales. This is the central question underpinning the creation of the Fire Model Intercomparison Project – FireMIP, an international project to compare and evaluate existing global fire models against benchmark data sets for present-day and historical conditions. In this paper we summarise the current state-of-the-art in fire regime modelling and model evaluation, and outline what lessons may be learned from FireMIP.

Interfacial bond behaviour between hybrid carbon/basalt fibre composites and concrete under dynamic loading

2020 ◽  
Vol 99 ◽  
pp. 102569 ◽  
Author(s):  
Cheng Yuan ◽  
Wensu Chen ◽  
Thong M. Pham ◽  
Hong Hao ◽  
Jian Cui ◽  
...  
Keyword(s):  
Dynamic Loading ◽  
Interfacial Bond ◽  
Basalt Fibre ◽  
Bond Behaviour ◽  
Fibre Composites ◽  
Hybrid Carbon

scholarly journals Limited progress in fire modelling

2018 ◽  
Author(s):  
Iain Colin Prentice
Keyword(s):  
Fire Modelling ◽  
In Fire

scholarly journals Evaluation of Basalt Fibre Composites for Marine Applications

2017 ◽  
Vol 25 (2) ◽  
pp. 299-308 ◽  
Author(s):  
P. Davies ◽  
W. Verbouwe
Keyword(s):  
Basalt Fibre ◽  
Fibre Composites ◽  
Marine Applications

Fracture Properties of Basalt Fibre Composites with Cured or Pyrolysed Matrix

2009 ◽  
Vol 409 ◽  
pp. 326-329
Author(s):  
Martin Černý ◽  
Zdeněk Chlup ◽  
Zbyněk Sucharda ◽  
Petr Glogar
Keyword(s):  
Electron Microscopy ◽  
Fracture Toughness ◽  
Mechanical Characteristics ◽  
Basalt Fibre ◽  
Fracture Properties ◽  
Chevron Notch ◽  
Fibre Composites ◽  
Material Fracture ◽  
Composite Samples ◽  
Scanning Electron

Composite materials based on polysiloxane matrix reinforced by basalt fibres were prepared in laboratories of the IRSM ASCR. The composite samples were pyrolysed at 400 ÷ 750 °C after moulding and curing at 250 °C. Measurement of several mechanical characteristics (flexural strength, fracture toughness, impact strength, and measurement of elasticity) demonstrates a favourable influence of pyrolysis in comparison with the cured-only composite material. Fracture toughness was measured by chevron-notch technique and fracture surfaces were investigated using a scanning electron microscopy.

Integrating fire spread patterns in fire modelling at landscape scale

2016 ◽  
Vol 86 ◽  
pp. 219-231 ◽  
Author(s):  
Andrea Duane ◽  
Núria Aquilué ◽  
Assu Gil-Tena ◽  
Lluís Brotons
Keyword(s):  
Fire Spread ◽  
Landscape Scale ◽  
Fire Modelling ◽  
In Fire

scholarly journals Unidirectional fibre reinforced geopolymer matrix composites

2021 ◽  
Author(s):  
◽  
Michael Welter
Keyword(s):  
Room Temperature ◽  
Matrix Composition ◽  
Flexural Properties ◽  
Matrix Composites ◽  
Basalt Fibre ◽  
Geopolymer Matrix ◽  
Fibre Composites ◽  
The Matrix ◽  
Carbon Fibre Composites ◽  
Unidirectional Fibre

<p>Geopolymers have been suggested in the literature as matrix materials for fibre reinforced composites due to a unique combination of low-temperature synthesis and high temperature stability. This study investigated several key aspects of fibre reinforced geopolymer matrix composites in order to improve the basic knowledge of these materials. It was demonstrated that geopolymer matrix composites show great potential as fire-resistant materials for near room temperature applications. In particular, basalt fibre composites were of great interest due to their comparatively low cost and good mechanical performance. Microstructural investigations indicated that basalt fibres can potentially be used in geopolymer matrices up to 600°C. However, the success of the application of geopolymer matrix composites at higher temperatures is seen as critical and depends on further development of suitable matrices.  Several compositions within a sodium-metahalloysite model matrix system were evaluated in order to identify a suitable formulation for composite fabrication. An average compressive strength of ~ 79 MPa and flexural strength and modulus of ~ 10 MPa and 8.5 GPa, respectively, were achieved for the best batch of the main matrix composition. By optimising the matrix composition, the mechanical properties could be significantly improved, achieving an extremely high maximum compressive strength value of 145 MPa. Issues with reproducibility and the influence of various aspects of the fabrication process are discussed.  The room temperature flexural properties of unidirectional fibre reinforced composite bars with basalt, carbon and alumina fibres were investigated. Besides the fibre type, the effects of several other parameters including fibre sizing, matrix strength, span-to-depth ratio and specimen dimensions on the flexural properties and the failure behaviour of the composites were studied. Significant improvements to the mechanical properties were achieved with all fibre types. However, the mechanical behaviour was highly influenced by the elastic modulus of the fibre. Furthermore, it was shown that the composite properties were affected by the overall sample dimensions, the testing span and the mixing time of the geopolymer binder. The alumina fibre composites achieved the highest flexural stress with a maximum value of 470 MPa and a fibre content of ~ 30 vol.-%. Basalt and carbon fibre composites showed maximum flexural strength values around 200 MPa. Although all composite types displayed considerable post-fracture strength, only the basalt composites failed in tensile mode. The applicability of the weak matrix composites (WMC) concept to describe the mechanical behaviour of geopolymer matrix composites was discussed.  The fibre-matrix interactions were analysed between room temperature and 1000°C by means of electron microscopy, EDS and x-ray diffraction. All fibres were found to be chemically stable under the highly alkaline conditions of the geopolymer synthesis and showed no significant reaction with the geopolymer matrix at room temperature. The results indicate that basalt fibre composites may be used up to 600°C without significant degradation of the fibre. The heating of the carbon fibre composites to 600°C had drastic effect on the strength and integrity of the composite, in particular, when using sized carbon fibres. The alumina fibres showed good wetting and bonding behaviour but otherwise little reaction with the matrix even after heating to 1000°C.</p>

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