Afizah Ayob
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Afizah Ayob
Official Name
Afizah, Ayob
Alternative Name
Ayob, Afizah
Ayob, A.
Afizah, A.
Main Affiliation
Scopus Author ID
23767077500
Researcher ID
D-3484-2018

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  • Publication
    Java's South Beach Sand as a Noise-Absorbing Material Innovation
    ( 2023)
    Nur Rahmawati Syamsiyah
    ;
    Rini Hidayati
    ;
    Dhani Mutiari
    ;
    Wisnu Setiawan
    ;
    Afizah Ayob
    South beach sand, particularly in Central Java, Indonesia, has a smooth texture that distinguishes it from other types of beach sand. The purpose of this study is to identify the properties and sound absorption coefficients of beach sand. Previous studies have found that beach sand in the yard of the Great Mosque of Surakarta is a component of the courtyard that absorbs the high sound. Subsequently, sand performance measurements were performed in the laboratory to assess the material's ability to absorb sound using the metrics of reverberation time (T30), Sound Transmission Class (STC), Outdoor-indoor Transmission Class (OITC), Noise Reduction Criteria (NRC) and sound absorption coefficient. According to the test results, south beach sand has an absorption value of 63%, which is comparable to that of other natural materials, such as wood. The findings of this study can be followed by simulating the use of south beach sand in other mosques to create a calm and quiet atmosphere.
      3  13
  • Publication
    Comparative Study Between Concrete Waste and Rooftile Waste as Coarse Aggregates Replacement on Marshall Properties of Ashpalt Concrete-Wearing Course (AC-WC)
    ( 2024-02-23)
    Harnaeni S.R.
    ;
    Hijra F.
    ;
    Benina D.A.
    ;
    Utomo B.
    ;
    Sunarjono S.
    ;
    Riyanto A.
    ;
    Ibrahim H.I.
    ;
    Afizah Ayob
    ;
    Nik Zainab Nik Azizan
    This study aims to compare the Marshall properties of Asphalt asphalt Concrete-Wearing Course (AC-WC) by replacing coarse aggregate with concrete waste and rooftile waste as a substitution. The research was conducted by Marshall test of AC-WC using variations 0%, 20%, and 40% concrete waste and rooftile waste of coarse aggregate. Based on the results of the study, it was found that the comparison of AC-WC Marshall properties with the replacement of concrete waste and rooftile waste is: the addition of concrete waste or rooftile waste tends to increase the value of stability and VMA(Void in Mineral Aggregate), Stability and VMA of the AC-WC tend to be higher in the addition of rooftile waste than concrete waste; the addition of concrete waste tends to increase flow and VIM (Void In the Mix), while the addition of rooftile waste tends to decrease flow and VIM, Flow and VIM of AC-WC tend to be higher in addition of concrete waste than rooftile waste; then the addition of concrete waste tends to decrease VFWA (Void Filled With Asphalt) and MQ (Marshall Quotient), while the addition of rooftile waste tends to increase VFWA and MQ, VFWA and MQ AC-WC tends to be higher in the addition of rooftile waste than concrete waste. Research on the utilization of concrete waste and rooftile waste as a partial replacement for coarse aggregate in the AC-WC asphalt mixture will reduce waste that pollutes the environment.