Nurfadzillah Ishak
Thumbnail Image
Preferred name
Nurfadzillah Ishak
Official Name
Nurfadzillah, Ishak
Alternative Name
Ishak, Nurfadzillah
Binti Ishak, Nurfadzillah
Ishak, N.
Main Affiliation
Scopus Author ID
57200613090
Researcher ID
DUL-4821-2022

Research Output

Filters

2
7
7
Reset filters

Settings
Now showing 1 - 7 of 7
  • Publication
    The sustainability of recycled concrete as green material solution
    ( 2020-03-25)
    Muhammad Azizi Azizan
    ;
    Nik Noriman Zulkepli
    ;
    Hazry Desa
    ;
    Nurfadzillah Ishak
    ;
    Dahham O.S.
    ;
    Umar M.U.
    ;
    Johari I.
    Nowadays, there are lot of concrete waste were produced from demolition, destruction and others. The usage of concrete is not environmentally friendly due to depletion of reserve natural resources, high energy consumption and disposal issues. Construction debris give a large fraction of solid waste disposal problem, and constitutes the large component. By recycling concrete waste for brick production as replacement the other materials, it can reduce the usage of natural resources and disposal problem that have been occur. The aim of this study to determine the sustainability of the recycled concrete by producing a brick using recycled coarse concrete aggregate at nominal size 10mm. An experiment done by comparing the result of the control specimen using 100% natural sand with specimen that have replaced the sand with recycled concrete aggregate for 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, and 100%. The result showed the optimum recycled concrete to produce a brick is at 90% replacement of RCCA where the compressive strength and flexural was achieved 9.7MPA and 3.53MPA respectively with 16133.33 kg/m3 of density. The water absorption of green brick is 9.23% and the cost of brick have been reduced from Rm0.26 to 0.20.
      4  32
  • Publication
    Application of coal bottom ash as raw material for concrete brick in housing construction
    ( 2020-03-25)
    Muhammad Azizi Azizan
    ;
    Nik Noriman Zulkepli
    ;
    Nurfadzillah Ishak
    ;
    Hazry Desa
    ;
    Omar S. Dahham
    ;
    Umar M.U.
    ;
    Jaya H.
    Coal and coal-fired power plants are crucial for supplying global energy demand. However, coal-fired power plants produce significant quantities of bottom ash as by-products. Through these power plants, it produces approximately 18 tons of bottom ash each day. Malaysia has the challenging task of dealing with an increasing amount of waste generated by power plants each year. The high cost of construction and operation of incineration plants coupled with a lack of landfills have given rise to the need for waste minimization and recycling. The use of coal ash in concrete is a new dimension in concrete mix design and if applied on large scale can revolutionize the construction industry, by economizing the construction cost and decreasing the ash content. The used of the coal bottom ash in the concrete brick can reduce the wastage of the coal bottom ash in Malaysia, beside that the cost of the housing can be reduced. In addition, the sustainability in the housing construction in Malaysia can be achieved using the wastage material in the construction.
      43  3
  • Publication
    The effectiveness of highway information modeling in Kuala Perlis - Changlun Roadway
    ( 2020-03-25)
    Muhammad Azizi Azizan
    ;
    Nik Noriman Zulkepli
    ;
    Hazry Desa
    ;
    Nurfadzillah Ishak
    ;
    Dahham O.S.
    ;
    Umar M.U.
    ;
    Jaya H.
    Road and highway observation is critical for road engineers to determine the information of the highway itself for the needs of maintenance, rehabilitation and even in construction. This research reviews the efficiency of information of roads and highway by visual and experience. The mean of visual includes the usage of Unmanned Aerial Vehicles (UAV) and on spot observation. It also reveals the image based, photogrammetric and stereo-vision, and mobile mapping systems.The software output has compatibility with known CAD/GIS packages to widen its scope of applications. Methodologies, examples and demonstration related to the use of the developed software and laser scanning data in road mapping for a case study are described. The results showed the flexibilities of the developed software and the proposed method for generating the necessary maps and data for road distresses such as longitudinal cracks, transverse cracks, patch deterioration, potholes, and ravelling. However, the present work shows that using terrestrial laser scanning technologies for modelling the road surface has advantages such as surveying speed, big roads, highways and tunnels. Also it provides the safety for surveyors and the absence of a disruption to traffic. The developed software and methodology are suitable for universities, academic centres and are of great interest to small engineering firms for the generation of road surface maps.
      2  21
  • Publication
    The challenges in conservation practices in Malaysia: A study in UNESCO heritage site, Georgetown, Penang, Malaysia
    ( 2020-03-25)
    Muhammad Azizi Azizan
    ;
    Nik Noriman Zulkepli
    ;
    Hazry Desa
    ;
    Nurfadzillah Ishak
    ;
    Dahham O.S.
    ;
    Umar M.U.
    ;
    Latip N.A.
    In Malaysia, conservation of heritage buildings is initiated by the government and private sector. The establishment of National Heritage Department of Malaysia in year 2006 has shown the government's effort to appreciate the existing of heritage buildings in Malaysia. The Department will ensure every requirement in National Heritage Act 2005 will be complied by respective Authorities. In addition, the listing of George Town and Malacca as UNESCO Heritage site on 7 July 2008 has put Malaysia as of the country to promote heritage tourism.The designation of George Town, Penang, along with Malacca, as a UNESCO World Heritage Site (WHS) on July 7, 2008 was a boast achievement, particularly for Penangites and Malaysian generally. The status has elevated Penang to international status in terms of cultural heritage tourism and expected to draw more tourists to the area. The impacts of tourism to the local community are inevitable. However, in conservation practice of course has some challenges in the process.
      1  24
  • Publication
    Application of coal bottom ash as raw material for concrete brick in housing construction
    ( 2020-03-25)
    Muhammad Azizi Azizan
    ;
    Nik Noriman Zulkepli
    ;
    Nurfadzillah Ishak
    ;
    Hazry Desa
    ;
    Dahham O.S.
    ;
    Umar M.U.
    ;
    Jaya H.
    Coal and coal-fired power plants are crucial for supplying global energy demand. However, coal-fired power plants produce significant quantities of bottom ash as by-products. Through these power plants, it produces approximately 18 tons of bottom ash each day. Malaysia has the challenging task of dealing with an increasing amount of waste generated by power plants each year. The high cost of construction and operation of incineration plants coupled with a lack of landfills have given rise to the need for waste minimization and recycling. The use of coal ash in concrete is a new dimension in concrete mix design and if applied on large scale can revolutionize the construction industry, by economizing the construction cost and decreasing the ash content. The used of the coal bottom ash in the concrete brick can reduce the wastage of the coal bottom ash in Malaysia, beside that the cost of the housing can be reduced. In addition, the sustainability in the housing construction in Malaysia can be achieved using the wastage material in the construction.
      2  24
  • Publication
    Effect of Spraying Dispersion Using UAV Spraying System with Different Height at Paddy Field
    ( 2023)
    Hazry Desa
    ;
    Muhammad Azizi Azizan
    ;
    Nik Noriman Zulkepli
    ;
    Nurfadzillah Ishak
    ;
    Hang Teh Xi
    ;
    Siti Syuhaidah Yahya
    ;
    Aisyah Arina Mohammad Shahrazel
    ;
    Fakhrul Mukmin Mansor
    ;
    Siti Zaleha Abdul Aziz
    ;
    Abadal-Salam T. Hussain
    This study investigated the UAV spraying system height in relation to spraying uniformity and dispersion. The operating heights of the UAV spraying system at heights of 1 m, 1.5 m, and 2 m from the hollow cone nozzles were investigated within a wind speed of 2.8 m/s. The tests were to determine the spray uniformity and dispersion on the water sensitive paper that was placed on the paddy plant. The results of water droplet samples were evaluated using ImageJ software. The results show the droplet distribution at 1.5 m height has high values for average droplet density, which is 162.7 deposits/cm²at the top area and 161.8 deposits/cm²at the bottom area. The percentage of coverage was also high, at 55.21% at the top area and 51.4% at the bottom area.
      1  25
  • Publication
    Spraying Dispersion Analysis with Different Nozzle Types Using a UAV Spraying System in a Paddy Field
    ( 2023)
    Hazry Desa
    ;
    Muhammad Azizi Azizan
    ;
    Nik Noriman Zulkepli
    ;
    Nurfadzillah Ishak
    ;
    Tian T.Y.
    ;
    Yahya S.S.
    ;
    Shahrazel A.A.M.
    ;
    Mansor F.M.
    ;
    Aziz S.Z.A.
    ;
    Hussain A.S.T.
    This study investigates the ability of Unmanned Aerial Vehicle (UAV) spraying systems to be used as an agriculture spraying method in Malaysia. The operating height of the UAV was 1.5 m with three different nozzles were investigated within a wind speed of 1.15 m/s to determine spray uniformity and dispersion in the paddy field conditions. The results from these samples were evaluated by using ImageJ software. The results show that the droplet distribution by using an electrostatic centrifugal nozzle has a high average droplet density, which is 134.03 deposits/cm2 for the top area and 153.93 deposits/cm2 for the bottom area. The electrostatic centrifugal nozzle also testified to the high value of total droplet deposit at 3478 for the top area and 3255 for the bottom area.
      3  46