Khairel Rafezi Ahmad
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Preferred name
Khairel Rafezi Ahmad
Official Name
Ahmad, Khairel Rafezi
Alternative Name
Ahmad, Khairel R.
Ahmad, K. R.
Rafezi Ahmad, Khairel
Ahmad, Khairel Rafiez
Ahmad, Khairul R.
Khairel, R. A.
Rafezi, Khairel
Ahmad, Khairel Refazie
Ahmad, Khaireel Rafezi
Main Affiliation
Scopus Author ID
43260917000
Researcher ID
AAK-8057-2020

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  • Publication
    Recycled Incineration Bottom Ash and Metakaolin as Sustainable Materials for Cement Replacement in Cementitious Composites
    ( 2023-01-01)
    Roshazita Che Amat
    ;
    Syakirah Afiza Mohammed
    ;
    Norlia Mohamad Ibrahim
    ;
    Nur Liza Rahim
    ;
    Khairel Rafezi Ahmad
    ;
    Raischi M.
    Study was related to the influence of the concrete properties by using different percentages of metakaolin and fixed percent of incineration bottom ash to partially replace the cement. Cement is a well-known building material and used for the construction in the world. Moreover, the used of metakaolin (MK) and incineration bottom ash (IBA) in this research would give significance to our environment as it can reduce the usage of cement in concrete. By using bottom ash, it could reduce the land filling space. The X-Ray Fluorescence (XRF) test was used to determine the chemical composition of IBA and MK. Four series of concrete have been examined, including control, IBA and MK were used as partial replacement for cement at 10%IBA + 10%MK, 10%IBA + 15%MK and 10%IBA + 20%MK of concrete mixes by volume. The curing period for the samples is 7 days and 28 days. To determine the properties of concrete, the tests such as slump test, density test, water absorption test, pulse velocity test, rebound hammer test and compression test were performed. The results proved that the strength development of 10%IBA + 10%MK concrete sample shows the highest compressive strength after 28 days of curing.
      2
  • Publication
    Metallurgist's pocket book
    ( 2011)
    Kamarudin Hussin
    ;
    Mohd Ichwan Nasution
    ;
    Shamsul Baharin Jamaludin
    ;
    Che Mohd Ruzaidi Ghazali
    ;
    Khairel Rafezi Ahmad
    ;
    Mohd Fitri M. W.
    Metallurgist's Pocket Book is a handy reference book that can be used by undergraduate students of materials engineering and metallurgy, as well as diploma students of metallurgy. This book contains descriptions of data elements, and characterization of chemical elements, such as melting point, and boiling point, and this book also provides information on the physical and mechanical properties of metals and alloys.
      26  78
  • Publication
    Pengenalan kepada ujian bahan tanpa musnah
    ( 2013)
    Mohd Arif Anuar Mohd Salleh
    ;
    Khairel Rafezi Ahmad
    ;
    Dewi Suriyani Che Halin
    ;
    Siti Hawa Mohamed Salleh
    ;
    Muhammad Hafiz Zan @ Hazizi
    Pengenalan Kepada Ujian Bahan Tanpa Musnah merupakan sebuah buku yang membincangkan beberapa perkara asas yang penting dalam ujian tanpa musnah. Ia meliputi kebanyakan kaedah ujian tanpa musnah yang sering digunakan di industri. Buku ini memberi penerangan dalam ujian bahan tanpa musnah yang sering digunakan dalam industri bagi memeriksa kecacatan atau ketidaksempurnaan sesuatu bahan tanpa merosakkan atau memusnahkan bahan yang diperiksa. Keseluruhan kandungan buku ini merangkumi perbincangan dari aspek teori serta konsep pengujian, kaedah pengujian, dan aplikasi ujian dalam industri.
      53  1191