ORCID Profile
0000-0001-5491-9512
Current Organisation
Universiti Tunku Abdul Rahman - Kampus Bandar Sungai Long
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Publisher: Elsevier BV
Date: 11-2018
Publisher: Informa UK Limited
Date: 31-10-2018
Publisher: Elsevier BV
Date: 04-2015
Publisher: Elsevier BV
Date: 09-2018
Publisher: MDPI AG
Date: 23-11-2021
Abstract: The use of cement as a soil stabilization agent is one of the common solutions to enhancing the engineering properties of soil. However, the impact and cost of using cement have raised environmental concerns, generating much interest in the search for alternative materials to reduce the use of cement as a stabilizing agent in soil treatment. This study looked into limiting cement content in peat soil stabilization by using fly ash waste and polypropylene fiber (PPF). It focused on soil mechanical mediation for stabilization of peat with fly ash cement and PPF cement by comparing the mechanical properties, using unconfined compressive strength (UCS) and California bearing ratio (CBR) tests. The control (untreated) peat specimen and specimens with either fly ash (10%, 20% and 30%) and PPF (0.1%, 0.15% and 0.2%) were studied. Test results showed that 30% of fly ash and cement content displays the highest UCS and CBR values and gives the most reliable compressibility properties. On the other hand, UCS and CBR test results indicate optimum values of PPF–cement stabilizing agent content in the specimen of 0.15% PPF and 30% cement. Selected specimens were analyzed using scanning electron microscopy (SEM), and PPF threads were found to be well surrounded by cement-stabilized peat matrices. It was also observed that the specimen with 30% fly ash generated more hydration products when compared to the specimen with 100% cement content. It is concluded that the use of fly ash cement and PPF cement as stabilizing agents to limit the cement usage in peat soil treatment is potentially viable.
Publisher: Informa UK Limited
Date: 05-12-2014
Publisher: Hindawi Limited
Date: 2014
DOI: 10.1155/2014/805094
Abstract: This paper aims to synthesize and characterize an effective intumescent fire protective coating that incorporates eggshell powder as a novel biofiller. The performances of thermal stability, char formation, fire propagation, water resistance, and adhesion strength of coatings have been evaluated. A few intumescent flame-retardant coatings based on these three ecofriendly fire retardant additives ammonium polyphosphate phase II, pentaerythritol and melamine mixed together with flame-retardant fillers, and acrylic binder have been prepared and designed for steel. The fire performance of the coatings has conducted employing BS 476: Part 6-Fire propagation test. The foam structures of the intumescent coatings have been observed using field emission scanning electron microscopy. On exposure, the coated specimens’ B, C, and D had been certified to be Class 0 due to the fact that their fire propagation indexes were less than 12. Incorporation of ecofriendly eggshell, biofiller into formulation D led to excellent performance in fire stopping (index value, ( I ) = 4.3 ) and antioxidation of intumescent coating. The coating is also found to be quite effective in water repellency, uniform foam structure, and adhesion strength.
Publisher: MDPI AG
Date: 31-07-2019
Abstract: 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 s les 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 s les X, Y, and Z were qualified to be Class 0 materials due to the indexes of fire propagation being below 12. S les 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.
Publisher: Elsevier BV
Date: 11-2013
Publisher: Elsevier BV
Date: 09-2021
Publisher: IOP Publishing
Date: 04-2020
DOI: 10.1088/1755-1315/476/1/012131
Abstract: 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 l 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.
Publisher: Trans Tech Publications, Ltd.
Date: 03-2019
DOI: 10.4028/WWW.SCIENTIFIC.NET/MSF.947.142
Abstract: 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 s les in the condensed phase were conducted in accordance with the ISO 5660-1 standard. On exposure, the s les 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.
Publisher: Elsevier BV
Date: 2015
Location: Malaysia
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