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

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  • Publication
    Applications of waste material in the pervious concrete pavement: A review
    ( 2017-09-26)
    Shahrul Azwan Shakrani
    ;
    Afizah Ayob
    ;
    Mohd Asri Ab Rahim
    Pervious concrete pavement is one of the innovative structures designed in order to manage the quantity and quality of urban stormwater for a sustainable development. In general, pervious concrete pavement enables water to permeate through its structure and have a capability to cater dynamic loads at the same time. However, the conventional pervious concrete pavement lacks a superior strength while performing as pavement structure. Thus, an extensive research has been carried out in order to explore the possible materials to be incorporated into the pervious concrete pavement for better physical, structural and mechanical properties. The objectives of this paper are to review the waste materials used in the pervious concrete pavement along with their mechanical, durability and permeability performance.
  • Publication
    Physical behaviours of maximum loading and cracking for slurry infiltrated fibre reinforced concrete
    ( 2020-06-10)
    Mustaqqim Abdul Rahim
    ;
    Zahirah A.
    ;
    Shahidan S.
    ;
    Mohd Badrul Hisyam Ab Manaf
    ;
    Shamshinar Salehuddin
    ;
    Zuhayr Md Ghazaly
    ;
    Afizah Ayob
    ;
    Nor Faizah Bawadi
    ;
    Shamilah Anudai @ Anuar
    ;
    Ahmad A.N.A.
    Concrete prisms are being test with flexural testing by different percentage volume of steel fibres. The total number of 24 prisms were made which contain 3 %, 6 % and 9 % of steel fibres respectively. This only consist experimental results. Specimens used in this study using a prism mold of 100 mm x 100 mm x 500 mm. Eighteen prisms will be added with a layer of 10 mm of steel fibre using slurry method. All of the samples were tested using flexural testing to determine the maximum loading. The highlight scope of this research is to evaluate the physical behavior of Slurry Infiltrated Fibre Reinforced Concrete in term of maximum load and cracking pattern. The results of the study were also compared with concrete without steel fibres. However, the workability of the concrete decreased as the number of steels fibre increase. The maximum load was obtained by the lowest percentage of steel fibre (3%).
  • Publication
    A practical guide of thesis writing for engineering students
    (Penerbit UniMAP (UniMAP Press), 2022)
    Afizah Ayob
    This book is an essential guide to thesis writing for university students. Written by the people who supervise your thesis, it will show you step-by-step to choose an engineering topic for the thesis that can be explored and turned into a thesis. This book will guide you through all the stages, including developing research strategies, writing with distinction, completing strongly with editing, and getting your referencing right every time. Emphasizing insider tips on what examiners look for, this straightforward and easy-to-use guide includes: The important principle for a good thesis (Yes, there is a principle!) Effective time management approach so you never submit the thesis late Putting the results into a convincing format and dealing with issues that inevitably arise Guidelines for getting your academic English right every time Avoiding common missteps, how to fix them, and improving the level of writing This book is the result of many years of teaching and supervising students. It is a must-read for anyone writing a thesis, or anyone who supervises these students.
  • Publication
    Physical properties of Dolomite fines as partially replacement of cement
    ( 2023-01-01)
    Mustaqqim Abdul Rahim
    ;
    Ivin C.
    ;
    Norlia Mohamad Ibrahim
    ;
    Shahidan S.
    ;
    Afizah Ayob
    ;
    Nor Faizah Bawadi
    ;
    Shamilah Anudai @ Anuar
    ;
    Zuki S.S.M.
    ;
    Shamshinar Salehuddin
    Since the cost of cement increases and the pollution to environment due to greenhouse effect are becoming more serious year by year, thus, dolomite fines subjected to replace the cement in concrete mix as it has lower cost compared to cement and it is obtain directly from the Earth ground without any manufactured process. Dolomite fines also shows almost similar physical and chemical properties as cement. The various replacement of cement with dolomite fines carried out in this study is 0%, 5%, 10%, 15% and 25%. The grade of concrete sample designed to be 30. The properties of concrete sample in terms of physical characteristics; slump, density and water absorption for various percentage replacement are determined in this study. In this study, it shows the dolomite fines are lightweight aggregate compared to the cement and the water absorption of is lower compare to that of the control concrete.
      2
  • Publication
    Sustainability relationship between space configuration, activity patterns, and mosque acoustics quality
    (Maulana Malik Ibrahim State Islamic University of Malang, 2022-12-01)
    Syamsiyah N.R.
    ;
    Dharoko A.
    ;
    Utami S.S.
    ;
    Afizah Ayob
    The Great Mosque of Yogyakarta was built in 1773. This mosque has a traditional architectural style. This study investigates the relationship between the mosque's architectural form, the activities inside it, and its acoustic characteristics. It employed quantitative and qualitative methods, including sound pressure level (SPL) measurement, reverberation time, and architectural and activity observations. Acoustic measurements, architectural observations, and activities are conducted inside and outside the mosque from morning to night for one week. The research finding is a spatial continuity pattern identified as the gradation of SPL value. Consistent continuity of SPL values in accordance with the nature of activities hierarchy. The result of this study is to improve mosque noise control by arranging outdoor and indoor spaces in a sustainable manner.
      2  4
  • Publication
    Statistical Analysis of Accident Patterns and The Causes at A State Road in Perlis
    ( 2023-01-01)
    Doraisamy G.
    ;
    Farahiyah Abdul Rahman
    ;
    Afizah Ayob
    ;
    Rani H.A.
    ;
    Ibrahim M.K.A.
    ;
    Harnaeni S.R.
    According to data from the World Health Organization, approximately 1.3 million road users are at high risk of road traffic accidents every year. This study aims to assess accident patterns and causes on a state road between Kangar and Alor Setar. The evaluation of accident pattern employed include the chi-squared test (CST) and the level of service (LOS) survey. Analysis using Pearson CST reveals that age and vehicle type are significant factors in accidents. Specifically, individuals below 30 years old have a higher likelihood of being involved in accidents (ρ = 0.037), while motorcycles are more prone to accidents (ρ = 0.000). However, gender does not appear to impact accident involvement significantly (ρ = 0.911). The LOS E category indicates unstable traffic flows during Monday and Friday evenings. To evaluate accident causes from the perspective of road users, a questionnaire was used, and its validity and reliability were ensured through a pilot study. Four hypotheses were developed, examining human factors, vehicle factors, environmental factors, and road condition factors as independent variables. The results reveal that a majority of road users (33.3%) travel 1 to 3 times per week, with 23.1% of them being involved in accidents on this road. The validity test using the structural model identifies road factors (t = 6.166, ρ = 0.000), vehicle factors (t = 4.3399, ρ = 0.000), and human factors (t = 2.893, ρ = 0.005) as the most significant contributors to accidents. Hence, it is crucial for authorities to prioritize countermeasures focusing on these factors to reduce accidents on this road.
      1  19
  • Publication
    Relationship between Density and Early Compressive Strength of Slurry Infiltrated Fiber Reinforced Concrete (SIFCON)
    ( 2021-12-14)
    Mustaqqim Abdul Rahim
    ;
    Jonq L.J.
    ;
    Afizah Ayob
    ;
    Shamilah Anudai @ Anuar
    ;
    Nor Faizah Bawadi
    ;
    Norlia Mohamad Ibrahim
    ;
    Shahidan S.
    ;
    Ahmad A.N.A.
    ;
    Wahab R.A.
    The aim of the study is to study the physical and mechanical characteristics of Slurry Infiltrated Fiber Reinforced Concrete with fiber percentage volume of 5% and lower. For the testing of physical characteristics of the concrete, density test been conducted. For the testing of mechanical characteristics, compression test used to determine strength of concrete sample. The density of Slurry Infiltrated Fiber Reinforced Concrete increased when the usage of steel fiber percentage volume increases from 1% to 5%, nevertheless when compared to density of ordinary concrete, ordinary concrete is denser. For the significant of study, the mechanical properties of Slurry Infiltrated Fiber Reinforced Concrete, compressive strength increased when the fiber content increases from 1% to 5% percentage volume.
      1
  • Publication
    Influence of activated sewage sludge, parcel packaging plastic and face mask on hydraulic properties as landfill barrier
    ( 2024-03-07)
    Alias S.
    ;
    Zaidi N.N.K.
    ;
    Suhaini S.N.S.
    ;
    Afizah Ayob
    ;
    Khairudin M.B.S.M.
    This study aims to investigate the hydraulic properties of activated sewage sludge (ASS), parcel packaging plastic (PPP) and face mask waste (FM) as an alternative to the landfill barrier. The performance of ASS alone or mixed with plastic waste as a landfill liner or landfill cover is investigated by analysing the falling head test. The experiment showed that ASS alone gains the lowest permeability (¬ 2 x 10-5 cm/s), followed by the mixture of ASS:PPP and ASS:FM. The chemical characterization of ASS supports the finding on the hydraulic properties performance of ASS, which had almost similar properties to the clay liner, a conventional landfill barrier material. The experiment proves that the proposed materials are unable to meet the properties of the bottom liner, however, it can instead be used as the daily cover or final cover material of solid waste at landfill. The use of waste material can help manage the waste, thus reducing the environmental burden of this waste.
      1  6
  • Publication
    Preparation and Characterization of Polysulfone Composite Membrane Blended with Kenaf Cellulose Fibrils
    ( 2023-07-01)
    Mokhtar H.
    ;
    Afizah Ayob
    ;
    Tholibon D.A.
    ;
    Othman Z.
    Polysulfone (PSF) is widely used material for ultrafiltration (UF) membranes, which has outstanding mechanical properties, great chemical resistance, good thermal stability and wide pH operation range. The hydrophobic property of the PSF membrane seriously limits its application. Hence, blending with hydrophilic material as additives such as cellulose have been intensively studied to improve the hydrophilicity of membranes. Cellulose fibrils are composed of nano-sized elements, which have high hydrophilicity, strength, and biodegradation. A composite membrane was prepared by the phase inversion induced by an immersion process. The characteristics of the composite membrane were investigated with Fourier transform infrared spectroscopy (FTIR) and Scanning Electron Microscopic (SEM). The pure water flux of the composite membrane increased dramatically with the increase of cellulose fibrils. Mean pore size and porosity were significantly increased. Both mechanical properties and hydrophilicity were enhanced due to the addition of the cellulose fibrils.
      4  16
  • Publication
    Environmental impacts of construction projects in Pauh Putra Main Campus, Universiti Malaysia Perlis
    ( 2023-06-12)
    Ujang N.
    ;
    Afizah Ayob
    ;
    Mokhtar H.
    ;
    Mustaqqim Abdul Rahim
    ;
    Mohd Kasturi Nor Abd Aziz
    ;
    Ibrahim S.
    ;
    Munif Bahatin
    ;
    Abdul Ghapar Ahmad
    Buildings are enduring, and cities have even longer lives. Their impacts extend into the lives of several generations of our predecessors to the consequences of unspecified resources, environmental pollution, and decaying climate conditions. The identification of likely impacts of construction projects on the environment according to severity is a task that must be accomplished for minimizing those effects. This study identifies the most common environmental impacts of construction projects in the Pauh Putra Main Campus, Universiti Malaysia Perlis and proposes the measures for their mitigation. The methodology includes a review of pertinent literature, observations of the general environmental effects of on-site construction activities, focus groups, and a survey among university staff, students, and construction workers to determine their perception regarding the environmental impacts of construction activities. The collected data from 50 respondents was presented in tabular form and analyzed using the Statistical Package for Social Science software. The responses on the impacts of the ecosystem, natural resources, and public are linked to their relative importance index (RII). Most participant s were aware of environmental impacts caused by the construction project which prominently affected the ecosystem in terms of "noise pollution,""dust,"and "air pollution"(which are ranked first, second, and third with RII values of 0.57, 0.52, and 0.52, respectively). The majority of the participants ranked "use technological innovations materials and methods such as the industrialized building system"as the mitigation measure of controlling the adverse environmental impacts. The long-term asset value of a building depends on its capability to fulfil user needs, withstand changing environmental circumstances, and survive the progressing expectation of sustainability design quality.
      6  40