Khairunnisa Muhamad
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Preferred name
Khairunnisa Muhamad
Official Name
Muhamad, Khairunnisa
Alternative Name
Khairunnisa, M.
Muhamad, K.
Main Affiliation
Scopus Author ID
55779052600
Researcher ID
N-4546-2017

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Use of Palm Kernel Shell from Agriculture Waste as Partial Replacement for Coarse Aggregate in Hot Mix Asphalt

2024-04-19 , Liyana Ahmad Sofri , Muhammad Faiz Zainal , Muhammad Munsif Ahmad , Khairunnisa Muhamad , Ahmad Faizal Mansor

Palm kernel shell (PKS) is known as a waste material that produced by oil palm factory. In this research, PKS will be used as an alternative to improve the strength and performance of hot mix asphalt (HMA). The bitumen grade of 60/70 PEN and ACW14 had been used in the research. To investigate the strength of PKS in term of designing wearing course, bitumen content of 4% to 6% and different mix design with different percentages content of PKS were provided. The total specimens prepared in this research are 45 specimens. The specific gravity of PKS was lower and showed the high capacity in water absorption compare to the natural aggregate. The increment of percentage for PKS in HMA make the strength in Marshall Specimen became decreases as stated in the result and discussion. Result of optimum bitumen content for PKS 10, PKS 30 and PKS 50 were 4.72%, 4.86% and 4.90% individually. All optimum bitumen content in this research was satisfied with JKR Standard 2008 in term of the design parameter. The specimen of PKS 10, PKS 30 was classified as heavy traffic and PKS 50 was classified as medium traffic. PKS 10 was shown as a good partial replacement for natural aggregate due to the admissibility of parameter, environmental friendly factor and cheapest in costing.

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Influence of rice husk ash (RHA) on performance of green concrete roof tile in application of green building

2020-06-10 , Khairunnisa Muhamad , Norrazman Zaiha Zainol , Norhaizura Yahya , Siti Nur Aishah Mohd Noor , Nurul Huda Hashim , Danial Zikry Shahrazi

This paper studies on the development of green concrete roof tiles by using rice husk ash (RHA) as a partial replacement of cement as a green material. Rice husk is a product of agricultural waste that can be found easily and in large quantities due to increased annual paddy production in Malaysia. Demand for cement in construction has increased over the years as a result of over dependence on the modern building materials, which are so expensive that low income earners cannot afford building houses of their own. Besides, the satisfaction of building users is closely related to thermal comfort which is a complex dynamics of temperature and humidity. In this study, cement was replaced by the RHA at 0% until 20% by weight. Roof tiles performance were assessed based on Malaysian Standard (MS) requirement comprised of transverse strength, water absorption and water permeability. Results show that up to 10% of RHA give a good performance of concrete roof tiles which comply with Malaysia Standard.

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