Muhammad Azizi Azizan
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Preferred name
Muhammad Azizi Azizan
Official Name
Muhammad Azizi , Azizan
Alternative Name
Azizan, M. A.
Azizan, Muhammad Azizi
Azizan, Azizi
Azizi Azizan, Muhammad
Azizan, Muhammad Azizi Bin
Main Affiliation
Scopus Author ID
57200613794
Researcher ID
IYS-8746-2023

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The influence of alkali treatment on date seeds powder reinforced LLDPE composites: Flexural properties and impact strength

2020-03-25 , Elnaid A. , Nik Noriman Zulkepli , Dahham O.S. , Rosniza Hamzah , Muhammad Azizi Azizan , Hazry Desa , Umar M.U.

In this work, the influences of different concentration of sodium hydroxide (NaOH) (3, 6 and 9 wt.%) on the flexural and impact properties of linear low-density polyethylene / date seeds (LLDPE/DS) composites were examined. The LLDPE / DS ratio was fixed at 90/10 wt.% and the size of DS particles was measured at 125 - 250 micro m. The process used to synthesize the composites id extrusion followed by injuction molding process. Results showed that the presence of NaOH particularly at 6 wt.% concentration has improved the flexural and impact properties of the composite. This is due to bonding of the date seeds particles with the LLDPE matrix that reflected posativelly on the mechanical properties of the composite. However, the using of high NaOH concentration (9 wt.%) has shown an opposite trend, the increasing of surface roughness of the fiber after 9% NaOH treatment has reduced the flexibility of the composite and made it stiffer and more rigid, which in turn made it easy to break during mechanical test.

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The effects on different date seeds loading and size of LLDPE/Date seeds composites: Flexural properties and impact strength

2020-03-25 , Elnaid A. , Nik Noriman Zulkepli , Dahham O.S. , Rosniza Hamzah , Muhammad Azizi Azizan , Hazry Desa , Umar M.U.

This work evaluated the effect of different loading and size of date seeds (DS) on some mechanical properties of LLDPE/DS composites. Three different size (125 - 250 mm, 250-500 mm, and 500 - 1000 □m) and four different size loading (5, 10, 15, 20 wt%) of DS were used in this work. Flexural and Impact properties were evaluated when DS added to the LLDPE/DS composites. In order to fabricate this composite, the extrusion process followed by injection molding process was used respectively. It is found that the Flexural strength and Flexural modulus decreased with the increasing of date seeds loading in the composites. Furthermore, the Flexural properties of the composite with a coarser size of DS reduced more than other size of DS. The results of the impact strength testing have shown a similar trend of flexural properties. The LLDPE/DS composites at high DS loading show low impact strength (IS) value. Furthermore, the DS coarser size shows lower impact strength than other DS size. The reduction of the mechanical properties in the composites was probably due to the lack of a suitable coupling agent system need to be used to improve the adhesion bonding between filler and matrix.

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FTIR and gel content analyses of LLDPE/Date seeds composites

2020-03-25 , Elnaid A. , Nik Noriman Zulkepli , Dahham O.S. , Muhammad Azizi Azizan , Hazry Desa , Rosniza Hamzah , Umar M.U.

The potential of Date Seeds (DS) as a filler was studied. DS were collected, washed and grinned. Three different DS were used, i.e. coarse size (between 700-1000 μm), medium size (between 250-500 μm) and fine size (between 0-125 μm). After that, DS was mixed with linear low-density polyethylene (LLDPE) ar different DS content i.e. 5, 10, 15, and 20 %, and then fed into a twin-screw extruder and subsequently into an injection-moulding machine to produce LLDPE/DS biocomposite. FTIR and Gel-Content analyses were applied in order to study the properties of this composite. It is found that the composites showed five main peaks, at 3345-3347 cm-1, 2910 cm-1, 2847-2848 cm-1, 1462 cm-1, and 718-719 cm-1 respectively. These peaks indicated the existence of LLDPE polymer matrix, DS filler and the interaction between them in the composites. However, there was no significant change in the gel content of the composites compared to LLDPE control, which means the number of crosslinks between LLDPE and DS was limited. The lack of a suitable coupling agent system has effected negatively on the degree of crosslinking of the composite.

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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.

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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.

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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.

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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.

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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.

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