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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  • Publication
    The Influence of Cement Content to Properties of High Strength Anti Washout Concrete (HSAWC)
    ( 2024-04-19)
    Khairunnisa Muhamad
    ;
    Muhammad Haikal Farizad
    ;
    Zarina Yahya
    ;
    Liyana Ahmad Sofri
    The high strength of concrete required a lot of cement content to increase its strength but not for the anti washout concrete (AWC) or underwater concrete (UWC). AWC will face another problem which is higher cement content could make the segregation to occur. This segregation process will give bad impact to the strength of the AWC. This research studied on four different cement content to examine: 450 kg/m3, 500 kg/m3, 550 kg/m3 and 600 kg/m3 towards its fresh and hardened properties of concrete. Superplasticizer is used as water reducing agent in the mix proportions to achieve high strength and self-consolidated concrete. Apart from that, there are two types of concrete samples produced, the air sampling concrete and underwater sampling concrete which have the same mix proportion. The overall results show a good correlation between the cement content in the mix and the strength of the air sampling concrete achieved. However, anti washout concrete having issues which is segregation. This segregation had affected the strength of the concrete. In conclusion, Anti washout concrete shows that optimal cement content without any viscocity modifying agent (VMA) is at 550 kg/m3
      1  12
  • Publication
    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.
      16  1