Abhishek Bhargava

Abhishek Bhargava
Lund University | LU · Department of Fire Safety Engineering and Systems Safety

Chemical and Material Science Engineering

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13
Publications
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55
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Publications

Publications (13)
Article
Full-text available
Modelling capabilities have drastically improved in the last decade. However, in most of the cases the fire response of building elements is predicted by fitting input material properties to the models in order to match test data. This paper presents models developed to predict the unexposed side temperature of stone wool layered composites with st...
Article
A heat transfer and sub-grid chemical reaction kinetic model for solid phase combustion of a charring polymer is presented based on distributed reactivity modeling approach. The model is used to compute flammability parameters of a polymer sheet of a given thickness to simulate test results of a cone calorimeter experiment. Comparison of model simu...
Article
This article presents the experimental results of stone wool–layered sandwich constructions, with either steel or gypsum claddings, tested under four different heating exposures: 7 kW/m² incident radiant heat flux exposure, 60 kW/m² incident radiant heat flux exposure, parametric time–temperature curve exposure and ISO 834 standard time–temperature...
Article
Prediction of the insulating capability of building products in fire conditions would support the product development process. Stone wool insulation is a widely used material in fire barrier constructions. Due to the combustion of its organic content, the temperature inside stone wool can rise above the temperature of the exposed boundary. This tem...
Article
The thermal decomposition kinetics of poly(vinyl chloride) (PVC) and poly(methyl methacrylate) (PMMA) was studied by thermogravimetry using non isothermal experiments. A detailed kinetic analysis was done using the isoconversional methods (model-free) (including Friedman, Kissinger-Akhaira-Sunose (KAS) and Kissinger methods) and distributed reactiv...
Article
Full-text available
Polyvinyl chloride (PVC) is a common thermoplastic whichfinds widespread applications in the construction industryfor usage inceiling linings, flooring materials, electrical cables and roofing materials.Several fire requirements are put on these types of applications. For fire safety engineering and product development, thermo-chemical decompositio...
Article
In this study, a high pressure thermo-gravimetric analyser was used to probe the partial oxidation characteristics of coal to simulate gasification like conditions. A gasification grade, German lignite coal was selected for the HP-TGA analysis at increasing values of total pressures of up to 45 bars in carbon dioxide atmosphere. Three distinct reac...

Questions

Question (1)
Question
Hi, I am studying thermal decomposition of stonewool carrying an organic binder, rest of the matrix is made up of fibrous material comprising of inorganic oxides. The thermogram  shows weight loss due to burning of organic binder in a TGA experiment but at the end when the temperature reaches  around 600 degrees C, it starts to show slight weight gain.
I am looking for some thoughts and comments how to do the data treatment for such cases. Some previous research indicates that this phenomenon is observed due to crystallization reactions at the end of the binder combustion. All thoughts on this would be highly appreciated. 
Regards
Abhishek

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Projects (2)
Archived project
Project
www.firetools-fp7.eu