Muhd Afiq Hizami Abdullah
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Preferred name
Muhd Afiq Hizami Abdullah
Official Name
Muhd Afiq Hizami, Abdullah
Alternative Name
Abdullah, Muhd Afiq Hizami
Hizami Abdullah, Muhd Afiq
Abdullah, M. A.H.
Main Affiliation
Scopus Author ID
57206254418
Researcher ID
EJY-0602-2022

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Publication

New High Strength Water Retaining Interlocking Pavers Block for High Mechanical Performing Pavement and Reducing Runoff

2020-03-18 , Muhd Afiq Hizami Abdullah , Rashid N.A. , Abdul Latif Abdul Rani , Mohd Firdaus Omar

Interlocking paver blocks are used widely at low speed traffics road especially surrounding building complexes. Interlocking paver blocks are easy to install and provide aesthetic finishing to the landscape. However, usage of interlocking blocks in large areas reduce ground permeability that lead to higher runoff. New interlocking paver blocks were investigated to reduce runoff and the effect on its mechanical performance. Two types of paver block produced which is paver block with permeable concrete and paver block with void in the center. The results show that the compressive strength for paver block with permeable concrete is averagely higher than paver block with void by 31.5% while the flexural strength of all samples were between 1.0 to 1.7 MPa. Paver block with void recorded highest reduction of runoff compared to paver block with permeable concrete which is 25.5%. This is in line with water infiltration test result. It was concluded that the water retaining performance of paver block increase with increment of void volume and increase in void volume caused reduction on compressive strength of interlocking blocks.

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The Application of Coconut Fiber as Insulation Ceiling Board in Building Construction

2020-07-09 , Mohd Firdaus Omar , Muhd Afiq Hizami Abdullah , Rashid N.A. , Abdul Latif Abdul Rani , Illias N.A.

This study considers the applications of natural fiber composites in affordable housing projects located in Malaysia with the goal of addressing issues of the thermal comfort. Roof thermal insulation is one of the effective methods that can save cooling energy in places with an equatorial climate especially in Malaysia. The use of recycled products or industrial waste materials is now a potential trend in the industry. Therefore, natural fiber was chosen as a material for the ceiling board in this study. During the day, heat can enter the room from the roof so that insulation material is needed to reduce heat flux by maintaining the temperature of the building. The problems faced by consumers are cost increases due to the use of large amounts of electricity. Besides, asbestos use becoming less frequent because the government has banned its use as a ceiling, side panels, roofing material, asbestos cement-pipes, many types of fireproof and insulation material. The objectives of this study was to determine the mechanical and physical properties of coconut fiber with fire retardant paint as a thermal comfort for ceiling board. The next objective is to study the percentage difference in sodium hydroxide and sodium chloride during the treatment of coconut fiber. The data result is that the fiber is ideal as an insulating material for the house ceiling board because it has a low temperature quality of 0.225W. The water absorption value was as high as 11.20% which is slightly lower than previous studies. Finally, the density test has a value of 74.23 kg / m3 where the fibers are lighter than the other fibers even after immersion with different sodium hydroxide and sodium chloride. In addition, this study achieved a house ceiling that could help reduce the heat entering the house by 0.225W which used only a thickness of 10mm. The use of these fibers does not need the thickness between 20 mm or 40 mm. Therefore, it successfully lowered home electricity consumption in hot weather. It was found that the difference in temperature drop between 0 % and 3 % was 0.4W.

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Partially Replacement of Cement by Sawdust and Fly Ash in Lightweight Foam Concrete

2020-03-18 , Mohd Firdaus Omar , Muhd Afiq Hizami Abdullah , Rashid N.A. , Abdul Latif Abdul Rani

The rapid growth of population has led to increased demand for fast, affordable and quality housing development. Today, the construction industry in Malaysia has shifted from conventional methods to Industrial Building Systems (IBS). The most commonly used IBS component is precasat concrete with lightweight foam concrete. This study focuses on the main component of foam lighweight concrete, which is a partially replacement of cement by sawdust and fly ash. Among the features of lightweight concrete is density below 1800 kg/m3. Therefore, the objectives of this study is to determine the effects of sawdust and fly ash as part of cement replacement in terms of mechanical properties (compressive strenght) and physical properties (water absorption). In addition, this study also determine the optimum percentage of cement replacement by sawdust and fly ash in building material. The percentage of saw dust and fly ash used in this study as a partial replacement cement are 5%, 10%, 15% and 20%. The results show that increasing the percentage of mix propotion will increase the water absorption rate as well as decrease the compressive strenght of strength. Also, the density and compressive strength of lightweight foam concrete will decrease as the percentage of partial replacement cement increases. According to JKR Standard Specification for Building Works that referred in Malaysia, the minimum compression strength of lightweight foam concrete allowed for hollow blocks is 2.8 N/mm2. The results obtained from this study show lightweight concrete blocks using saw dust and fly ash as part of the cement replacement meet the standards and can be commercialized in the industrial building system development.

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Competitiveness of Industrialised Building System (IBS) and Conventional Method in Construction Industry in Terms of Quality

2023-10-04 , Mardhiah Farhana Omar , Muhd Afiq Hizami Abdullah , Najihah Abdul Rashid , Fatt H.L. , Abdul Latif Abdul Rani , Ishak H.

Construction quality is defined as the achievement of a satisfactory level of performance in construction work. One of the variables considered in the management of construction projects is quality. The quality of the building can be determined by its performance and compliance with all applicable requirements. However, the construction sector is facing difficulties because the quality of several projects has fallen short of expectations. As a result, the problem of lack of attention to construction quality must be addressed. Therefore, the objective of this study is to identify the elements that affect construction quality in the construction sector when IBS are used compared to conventional techniques, as well as to evaluate the success of construction with IBS compared to conventional methods in terms of quality. The final objective is to evaluate the link between the elements affecting the building quality in the Industrial Building System (IBS) and the conventional technology, as well as the quality success of the building. In this study, the quantitative analysis was conducted through questionnaire surveys that included the G7 construction companies in Selangor interested in building quality. Stratified random sampling approach was used in this study. QLASSIC was conducted by 130 Class 7 contractors from Selangor registered with the CIDB. This means that 97 people from the population are needed to complete the questionnaires. The results suggest that the most important elements affecting construction quality are that the construction of IBS components is not affected by extreme weather conditions because the prefabricated components are manufactured in a controlled environment, unlike the traditional technique. In addition, unlike traditional methods, IBS requires the use of professional personnel to install the structural components. As a result, the quality of a building can increases and defects can be reduced if it is successful. The importance of this study is that it will help contractors improve their quality on certain jobs and reduce unsatisfactory results in the future.

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