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Article

Fire Resistance and Mechanical Properties of Intumescent Coating Using Novel BioAsh for Steel

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Department of Architecture and Sustainable Design, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Cheras, Kajang 43000, Malaysia
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Department of Mechanical and Material Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Cheras, Kajang 43000, Malaysia
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Department of Civil Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Cheras, Kajang 43000, Malaysia
*
Authors to whom correspondence should be addressed.
Coatings 2020, 10(11), 1117; https://doi.org/10.3390/coatings10111117
Received: 6 October 2020 / Revised: 28 October 2020 / Accepted: 3 November 2020 / Published: 20 November 2020
(This article belongs to the Special Issue Advances in Flame Retardant Materials and Surfaces)
Recent developments of intumescent fire-protective coatings used in steel buildings are important to ensure the structural integrity and safe evacuation of occupants during fire accidents. Flame-retardant intumescent coating applied to structural steel could delay the spread of fire and heat propagation across spaces and structures in minimizing fire risks. This research focuses on formulating a green intumescent coating utilized the BioAsh, a by-product derived from natural rubberwood (hardwood) biomass combustion as the natural substitute of mineral fillers in the intumescent coating. Fire resistance, chemical, physical and mechanical properties of all samples were examined via Bunsen burner, thermogravimetric analysis (TGA), carbolite furnace, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), Fourier transform infrared (FTIR), freeze–thaw cycle, static immersion and Instron pull-off adhesion test. Sample BioAsh intumescent coating (BAIC) 4-7 incorporated with 3.5 wt.% BioAsh exhibited the best performances in terms of fire resistance (112.5 °C for an hour under the Bunsen burner test), thermal stability (residual weight of 29.48 wt.% at 1000 °C in TGA test), adhesion strength (1.73 MPa under Instron pull-off adhesion test), water resistance (water absorption rate of 8.72%) and freeze–thaw durability (no crack, blister and color change) as compared to other samples. These results reveal that an appropriate amount of renewable BioAsh incorporated as natural mineral fillers into the intumescent coating could lead to better fire resistance and mechanical properties for the steel structures. View Full-Text
Keywords: intumescent coating; flame-retardant; fire resistance; rubberwood ash; mineral fillers; mechanical properties intumescent coating; flame-retardant; fire resistance; rubberwood ash; mineral fillers; mechanical properties
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MDPI and ACS Style

Beh, J.H.; Yew, M.C.; Saw, L.H.; Yew, M.K. Fire Resistance and Mechanical Properties of Intumescent Coating Using Novel BioAsh for Steel. Coatings 2020, 10, 1117. https://doi.org/10.3390/coatings10111117

AMA Style

Beh JH, Yew MC, Saw LH, Yew MK. Fire Resistance and Mechanical Properties of Intumescent Coating Using Novel BioAsh for Steel. Coatings. 2020; 10(11):1117. https://doi.org/10.3390/coatings10111117

Chicago/Turabian Style

Beh, Jing H., Ming C. Yew, Lip H. Saw, and Ming K. Yew. 2020. "Fire Resistance and Mechanical Properties of Intumescent Coating Using Novel BioAsh for Steel" Coatings 10, no. 11: 1117. https://doi.org/10.3390/coatings10111117

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