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Ms. Jing Han Beh
Universiti Tunku Abdul Rahman (UTAR)

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0 Green Technology
0 Bio-based materials
0 green building materials
0 fire resistance
0 Intumescent coatings

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Intumescent coatings
fire resistance

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Her research interests are mainly focused on green walls and building materials

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Journal article
Published: 29 July 2021 in Journal of Materials Research and Technology
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Rubberwood biomass ash (RWA), which was derived from the combustion of rubberwood biomass in a fuel factory, was obtained for reuse as a natural mineral filler substitute in water-based intumescent coatings. The specific surface area of the RWA was 3.10 m2/g, with the particle’s surface areas predominant composed of mesopores, which was justified using the Brunauer-Emmett-Teller Test (BET). Rubberwood ash coatings (RWAC) formulated with 3.0 wt% RWA exerted the most homogenous and durable surface matrix in the Accelerating Weathering Test (AWT). Fire-resistant test (FRT) and thermogravimetric analysis (TGA) demonstrated the incorporation of the RWA with the intumescent flame-retardant formulation, generated positive effects in equilibrium end temperature, thermal decomposition, and weight loss reductions. These effects are most prominent in the RWAC-3, which was comprised of 3 wt% RWA, and 50/40/7 wt% vinyl acetate (VA)/intumescent flame retardant additive (IFRA)/pigment. The RWAC-3 showed the lowest equilibrium end temperature at 131.4 °C, the lowest thermal degradation at 71 wt%, and the highest carbonaceous char formation at 12.8 mm. The Surface Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDX) results exhibited a dense, compact, and coherent char formation for the RWAC-3 sample. The abundant O and P crosslinking structures in the RWAC-3 contributed to the quality of the char barrier. These results are supported by the evidence from Fourier-Transform Infrared Spectroscopy (FTIR), and X-Ray Diffractometer (XRD), which revealed the stretching of the O-H, P-O-C, and P=O molecular functional groups, and the presence of thermally stable phosphate compounds in the RWAC-3.

ACS Style

Jing Han Beh; Ming Kun Yew; Lip Huat Saw. Characterization and fire protection properties of rubberwood biomass ash formulated intumescent coatings for steel. Journal of Materials Research and Technology 2021, 14, 2096 -2106.

AMA Style

Jing Han Beh, Ming Kun Yew, Lip Huat Saw. Characterization and fire protection properties of rubberwood biomass ash formulated intumescent coatings for steel. Journal of Materials Research and Technology. 2021; 14 ():2096-2106.

Chicago/Turabian Style

Jing Han Beh; Ming Kun Yew; Lip Huat Saw. 2021. "Characterization and fire protection properties of rubberwood biomass ash formulated intumescent coatings for steel." Journal of Materials Research and Technology 14, no. : 2096-2106.

Journal article
Published: 30 April 2021 in Materials
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Oil palm shell (OPS) is an agricultural solid waste from the extraction process of palm oil. All these wastes from industry pose serious disposal issues for the environment. This research aims to promote the replacement of conventional coarse aggregates with eco-friendly OPS aggregate which offers several advantages, such as being lightweight, renewable, and domestically available. This paper evaluates the mechanical and thermal performances of renewable OPS lightweight concrete (LWC) reinforced with various type of synthetic polypropylene (SPP) fibers. Monofilament polypropylene (MPS) and barchip polypropylene straight (BPS) were added to concrete at different volume fractions (singly and hybrid) of 0%, 0.1%, 0.3% and 0.4%. All specimens were mixed by using a new mixing method with a time saving of up to 14.3% compared to conventional mixing methods. The effects of SPP fibers on the mechanical properties were investigated by compressive strength, splitting tensile strength and residual strength. The strength of the oil palm shell lightweight concrete hybrid 0.4% (OPSLWC–HYB–0.4%) mixture achieved the highest compressive strength of 29 MPa at 28 days. The inclusion of 0.3% of BPS showed a positive outcome with the lowest thermal conductivity value at 0.55 W/m °C. Therefore, the results revealed that incorporation of BPS fiber enhanced the performance of thermal conductivity tests as compared to inclusion of MPS fiber. Hence, renewable OPS LWC was proven to be a highly recommended environmentally friendly aggregate as an alternative solution to replace natural aggregates used in the concrete industry.

ACS Style

Leong Loh; Ming Yew; Ming Yew; Jing Beh; Foo Lee; Siong Lim; Kok Kwong. Mechanical and Thermal Properties of Synthetic Polypropylene Fiber–Reinforced Renewable Oil Palm Shell Lightweight Concrete. Materials 2021, 14, 2337 .

AMA Style

Leong Loh, Ming Yew, Ming Yew, Jing Beh, Foo Lee, Siong Lim, Kok Kwong. Mechanical and Thermal Properties of Synthetic Polypropylene Fiber–Reinforced Renewable Oil Palm Shell Lightweight Concrete. Materials. 2021; 14 (9):2337.

Chicago/Turabian Style

Leong Loh; Ming Yew; Ming Yew; Jing Beh; Foo Lee; Siong Lim; Kok Kwong. 2021. "Mechanical and Thermal Properties of Synthetic Polypropylene Fiber–Reinforced Renewable Oil Palm Shell Lightweight Concrete." Materials 14, no. 9: 2337.

Journal article
Published: 20 November 2020 in Coatings
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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.

ACS Style

Jing Han Beh; Ming Yew; Lip Huat Saw; Ming Yew. Fire Resistance and Mechanical Properties of Intumescent Coating Using Novel BioAsh for Steel. Coatings 2020, 10, 1117 .

AMA Style

Jing Han Beh, Ming Yew, Lip Huat Saw, Ming Yew. Fire Resistance and Mechanical Properties of Intumescent Coating Using Novel BioAsh for Steel. Coatings. 2020; 10 (11):1117.

Chicago/Turabian Style

Jing Han Beh; Ming Yew; Lip Huat Saw; Ming Yew. 2020. "Fire Resistance and Mechanical Properties of Intumescent Coating Using Novel BioAsh for Steel." Coatings 10, no. 11: 1117.

Conference paper
Published: 11 June 2020 in IOP Conference Series: Earth and Environmental Science
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The purpose of this project is to investigate the active cool roof system for the attic temperature reduction by using harvested rainwater system. A small scale metal roof model was designed and constructed to evaluate the attic temperature cooling performance. The measurements of the roof model were carried out indoor by utilizing the halogen lamp as the replacement for solar irradiation provided by sun. The surrounding ambient temperature was controlled to be around 25°C for the experimental. The rainwater harvesting system was implemented to cool down the roof top temperature that reduces the rate of heat transfer from the roof top to the attic region. The thermostat was installed with the water pump to reduce the roof top temperature efficiently. The hot water temperature of the heated roof was absorbed by the cool water and transferring into the small model of cooling tower and water collection tank. The result of the eco-friendly cool roof system has effectively reduced the attic temperature by 6.4 °C as compared to the conventional metal roof. The positive results of the integrated cool roof design have the ability to enhance the comfort of building occupants with sustainable renewable energy.

ACS Style

M C Yew; L H Saw; Jing Han Beh. Active cool roof system for attic temperature reduction. IOP Conference Series: Earth and Environmental Science 2020, 476, 012131 .

AMA Style

M C Yew, L H Saw, Jing Han Beh. Active cool roof system for attic temperature reduction. IOP Conference Series: Earth and Environmental Science. 2020; 476 (1):012131.

Chicago/Turabian Style

M C Yew; L H Saw; Jing Han Beh. 2020. "Active cool roof system for attic temperature reduction." IOP Conference Series: Earth and Environmental Science 476, no. 1: 012131.

Conference paper
Published: 11 June 2020 in IOP Conference Series: Earth and Environmental Science
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Fire resistant panel is one of the crucial element used to construct building components such as fire partition wall, fire door and ceiling. These fire resistant building components function as passive fire protection method to prevent the spread of smoke and fire, and to allow emergency escape of dwellers. Current challenges associated with existing fire resistant panels are heavy, labor and time inefficient. In this research fire resistant sandwich panels which are lighter in density were invented without compromising the fire resistant performance. Three fire resistant sandwich panels with various thickness were produced for two hours fire rated testing. Fire resistant sandwich panels were fabricated using respective mix proportion of vermiculite and consolidated with intumescent binder via molding techniques. Temperature profiles of fire resistant panels were recorded, plotted and analyzed. Fire resistant sandwich panel with optimum outcomes was determined by density, fire resistant performance, heat transmission rate, adhesion strength and flexural strength. Fire resistant sandwich panel Z obtained the best results in overall. Fire panel Z achieved a maximum temperature at only 83.2 ºC in the Bunsen burner test, indicating a higher fire resistivity with lower heat transmission rate. Panel Z had the highest flexural strength and better fire endurance and yet with the lowest density of 578.98 kg/m3. This research revealed formulation of fire-resistant sandwich panel was the key manipulating factor to density and fire resistivity.

ACS Style

Jing Han Beh; M C Yew; L H Saw. Development of lightweight fire resistant sandwich panel. IOP Conference Series: Earth and Environmental Science 2020, 476, 012031 .

AMA Style

Jing Han Beh, M C Yew, L H Saw. Development of lightweight fire resistant sandwich panel. IOP Conference Series: Earth and Environmental Science. 2020; 476 (1):012031.

Chicago/Turabian Style

Jing Han Beh; M C Yew; L H Saw. 2020. "Development of lightweight fire resistant sandwich panel." IOP Conference Series: Earth and Environmental Science 476, no. 1: 012031.

Journal article
Published: 31 July 2019 in Coatings
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This paper presents the heat release characteristics, char formation and fire protection performance of thin-film intumescent coatings that integrate eggshell (ES) as an innovative and renewable flame-retardant bio-filler. A cone calorimeter was used to determine the thermal behavior of the samples in the condensed phase in line with the ISO 5660-1 standard. The fire resistance of the coatings was evaluated using a Bunsen burner test to examine the equilibrium temperature and formation of the char layer. The fire propagation test was also conducted according to BS 476: Part 6. On exposure, the samples X, Y, and Z were qualified to be Class 0 materials due to the indexes of fire propagation being below 12. Samples Y and Z reinforced with 3.50 wt.% and 2.50 wt.% of ES bio-filler, respectively, showed a significant improvement in reducing the heat release rate, providing a more uniform and thicker char layer. As a result, the addition of bio-filler content has proven to be efficient in stopping the fire propagation as well as reducing the total heat released and equilibrium temperature of the intumescent coatings.

ACS Style

Jing Han Beh; Ming Chian Yew; Lip Huat Saw. Fire Protection Performance and Thermal Behavior of Thin Film Intumescent Coating. Coatings 2019, 9, 483 .

AMA Style

Jing Han Beh, Ming Chian Yew, Lip Huat Saw. Fire Protection Performance and Thermal Behavior of Thin Film Intumescent Coating. Coatings. 2019; 9 (8):483.

Chicago/Turabian Style

Jing Han Beh; Ming Chian Yew; Lip Huat Saw. 2019. "Fire Protection Performance and Thermal Behavior of Thin Film Intumescent Coating." Coatings 9, no. 8: 483.

Journal article
Published: 01 March 2019 in Materials Science Forum
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The present work analyzed the fire protection performances, char formation and heat release characteristics of the thin film intumescent fire protective coatings that incorporate the eggshell (ES) waste as a renewable flame retardant nano bio-based filler. The fire performances of the coatings were evaluated using Bunsen burner and cone calorimeter. The fire behaviors of the samples in the condensed phase were conducted in accordance with the ISO 5660-1 standard. On exposure, the samples B and D reinforced with 3.30 wt.% and 2.75 wt.% of ES nano bio-filler, respectively showed a significant reduction in total heat rate, promoting thicker and more uniform char layer in protecting the steel structural. As a result, ES nano bio-filler composition has shown to be efficient in fire protective performance of the intumescent coatings.

ACS Style

Ming Chian Yew; Lip Huat Saw; Jing Han Beh; Yeong Jin King; Rajkumar Durairaj. Effects of Flame Retardant Nano Bio-Based Filler on Fire Behaviors of Intumescent Coating. Materials Science Forum 2019, 947, 142 -147.

AMA Style

Ming Chian Yew, Lip Huat Saw, Jing Han Beh, Yeong Jin King, Rajkumar Durairaj. Effects of Flame Retardant Nano Bio-Based Filler on Fire Behaviors of Intumescent Coating. Materials Science Forum. 2019; 947 ():142-147.

Chicago/Turabian Style

Ming Chian Yew; Lip Huat Saw; Jing Han Beh; Yeong Jin King; Rajkumar Durairaj. 2019. "Effects of Flame Retardant Nano Bio-Based Filler on Fire Behaviors of Intumescent Coating." Materials Science Forum 947, no. : 142-147.

Journal article
Published: 31 October 2018 in European Journal of Environmental and Civil Engineering
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ACS Style

Ming Kun Yew; Jing Han Beh; Lip Huat Saw; Foo Wei Lee; Tan Ching Ng. Influence of high-performance polypropylene fibre and heat-treated dura oil palm shell on durability properties of lightweight concrete. European Journal of Environmental and Civil Engineering 2018, 24, 1 -20.

AMA Style

Ming Kun Yew, Jing Han Beh, Lip Huat Saw, Foo Wei Lee, Tan Ching Ng. Influence of high-performance polypropylene fibre and heat-treated dura oil palm shell on durability properties of lightweight concrete. European Journal of Environmental and Civil Engineering. 2018; 24 (14):1-20.

Chicago/Turabian Style

Ming Kun Yew; Jing Han Beh; Lip Huat Saw; Foo Wei Lee; Tan Ching Ng. 2018. "Influence of high-performance polypropylene fibre and heat-treated dura oil palm shell on durability properties of lightweight concrete." European Journal of Environmental and Civil Engineering 24, no. 14: 1-20.

Journal article
Published: 07 August 2018 in Progress in Organic Coatings
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In the modern design of commercial buildings, the requirements for fire safety and evacuation must comply with to ensure the protection of human lives and property. The applications of flame-retardant materials in buildings play a vital role in reducing the risks of fire propagation. This study aims to synthesize an eco-friendly intumescent coating by incorporating the novel eggshell (ES) nano bio-filler. The samples were then characterized using Bunsen burner, thermogravimetric analysis (TGA), scanning electron microscope (SEM), Fourier transform infrared (FTIR) and pull-off adhesion tester. The coating D with an appropriate combination of the binder and flame-retardant ingredients had significantly improved the formation of char thickness in protecting the coated steel. This char layer showed a denser and more uniform foam structure surface in the SEM micrograph. Additionally, this formulation had exhibited the highest adhesion strength of 2.13 MPa, which indicated the effectiveness of interface attachment on the substrate. Moreover, the thermal stability of the formulation had also increased in thermal analysis. Therefore, the outcomes of the research revealed that uses of optimal quantity of nano bio-filler leading to better fire protective performance and mechanical properties of the intumescent coating.

ACS Style

Ming Chian Yew; Lip Huat Saw; Tan Ching Ng; Rajkumar Durairaj; Jing Han Beh. Influences of nano bio-filler on the fire-resistive and mechanical properties of water-based intumescent coatings. Progress in Organic Coatings 2018, 124, 33 -40.

AMA Style

Ming Chian Yew, Lip Huat Saw, Tan Ching Ng, Rajkumar Durairaj, Jing Han Beh. Influences of nano bio-filler on the fire-resistive and mechanical properties of water-based intumescent coatings. Progress in Organic Coatings. 2018; 124 ():33-40.

Chicago/Turabian Style

Ming Chian Yew; Lip Huat Saw; Tan Ching Ng; Rajkumar Durairaj; Jing Han Beh. 2018. "Influences of nano bio-filler on the fire-resistive and mechanical properties of water-based intumescent coatings." Progress in Organic Coatings 124, no. : 33-40.

Journal article
Published: 02 May 2018 in Journal of Building Engineering
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This piece of research presents the capability of active and passive cool roof systems, which is designed to reduce the heat transmission into an attic through the metal deck roofing for industrial buildings in Malaysia. In this study, an ideal cool roof system focusing on utilizing solar energy, cavity ventilation and thermal reflective coating (TRC) were employed and investigated. This technique is one of the most innovative and sustainable practices at reducing the energy consumption that provide buildings with comfortable indoor conditions through natural means. The four cool roof models were designed and built in active and passive systems to examine the effect of attic temperature reduction. Application of TRC can significantly reduce the heat absorption of the metal roof. The roof and attic temperatures of the roof models were measured to determine the performance of cool roof system. The roof design (d) results indicate a great reduction at about 15 °C in the attic air temperature compared to normal roof. The outstanding performance is due to the cool roof system that integrated TRC, improved moving air cavity (MAC)-solar powered fans and opened attic inlet comprise the ability to reflect the sunlight and circulate the hot air efficiently.

ACS Style

Ming Chian Yew; Lip Huat Saw; Tan Ching Ng; Kah Pin Chen; Durairaj Rajkumar; Jing Han Beh. Experimental analysis on the active and passive cool roof systems for industrial buildings in Malaysia. Journal of Building Engineering 2018, 19, 134 -141.

AMA Style

Ming Chian Yew, Lip Huat Saw, Tan Ching Ng, Kah Pin Chen, Durairaj Rajkumar, Jing Han Beh. Experimental analysis on the active and passive cool roof systems for industrial buildings in Malaysia. Journal of Building Engineering. 2018; 19 ():134-141.

Chicago/Turabian Style

Ming Chian Yew; Lip Huat Saw; Tan Ching Ng; Kah Pin Chen; Durairaj Rajkumar; Jing Han Beh. 2018. "Experimental analysis on the active and passive cool roof systems for industrial buildings in Malaysia." Journal of Building Engineering 19, no. : 134-141.