Browsing by Author "Mamat, R"

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    item: Conference-Full-text
    Chemical properties of modified bitumen incorporating coconut char
    (Springer, 2021) Mamat, R; Hainin, MR; Hassan, NA; Warid, MNM; Satar, MKIM; Rahman, NAA; Pasindu, HR; Bandara, S; Mampearachchi, WK; Fwa, TF
    Agriculture waste have many advantages such as high specific strength and modulus, low density, renewable nature, biodegradability and absence of health hazards. This advantage is good for construction industry because it can improve the properties of the composites. The coconut fruits contain 40% coconut husk, 30% fiber and 30% dust, consisted of flesh, shell and fiber and chemical composition such as cellulose, lignin, charcoal, acid and potassium. The advantages of coconut shell are strong, rigid and lightweight material, very economical as large amounts are available as agricultural waste material and environmentally friendly. This paper presents the performance of modified binder incorporating coconut char in terms of chemical properties. Fourier Transform Infrared Test (FTIR), Particle Size Analyzer Test (LPSA) and Elemental Analyzer Test (EA) were used to analyze the chemical properties on modified binder. Based on the findings, the increased content of char affects the performance of bitumen significantly, as the bitumen maintains stability and homogenous state even though placed in high temperature condition. The testing result value of FTIR and LPSA are increased with the increased content of coconut char. Based on the results, the modified mixture has the higher chemical components and porosity compared to original bitumen and coconut shell because of the modification.
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    item: Conference-Full-text
    Rheological properties of modified binder incorporating coconut char
    (Springer, 2021) Mamat, R; Hainin, MR; Hassan, NA; Satar, MKIM; Warid, MNM; Rahman, NAA; Pasindu, HR; Bandara, S; Mampearachchi, WK; Fwa, TF
    Coconut char derive from coconut shell is a waste product that is anticipated to be potential alternative for modified binder. Coconut char has great potential to be used as the base material for modifier because it is safe to use. In this study the coconut char was used as additive in asphalt modified binders. This paper presents the rheological properties ofmodified bitumen incorporating coconut char. Rheology can be defined as the fundamental measurements associated with the flow and deformation characteristics of bitumen, evaluation of the flow and permanent deformation of time-temperature dependent materials, such as bitumen, that are stressed through the application of force. The modified bitumen was tested under different aging conditions using Rotational Viscometer (RV), Rolling Thin Film Oven (RTFO) and Dynamic Shear Rheometer (DSR). Coconut char was blended with 5, 10, 15, 20 and 25% by weight of the penetration grade 80/100. DSR was employed to measure the rutting resistance, the G*/sin at temperature 46–76 °C. Based on the findings, it is shown that the increase in coconut char percentage can effectively give highest G*/sin and affect the rutting performance under ageing condition. It also found that modified bitumen samples enhanced the rheological properties of the bitumen in terms of fatigue cracking and rutting.