Shamilah Anudai @ Anuar
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Preferred name
Shamilah Anudai @ Anuar
Official Name
Shamilah, Anudai @ Anuar
Alternative Name
Shamilah, A.
Anudai, Shamilah
Main Affiliation
Scopus Author ID
57204799617
Researcher ID
IIT-9540-2023

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Effect of natural fibers on the soil compaction characteristics

2020-06-10 , Nor Faizah Bawadi , Ahmad N.S. , Ahmad Faizal Mansor , Shamilah Anudai @ Anuar , Mohd Asri Ab Rahim

Clay soils are considered as a problematic soil in term of water absorption rate. The ideas of soil improvement method had been widely used to modify the physical and mechanical properties of clay soil. This study aims to identify the optimum percentage mixing of natural fibers in influencing the compaction characteristics. X - ray fluorescent test (X-RF) and Standard Proctor test has been performed to determine the chemical composition of natural fibers and compaction characteristics of soil samples. Natural fibers such as banana, kenaf, and coconut coir were used as a natural soil stabilizer with varying percentage mixing to increase the properties and stability of soil samples. Experimental data obtained from compaction test shows that the appropriate maximum dry density and optimum moisture content for each natural fiber are at 0.5% natural fibers mixing. In this study, the maximum dry density and optimum moisture content for untreated samples are 1650kg/m3 and 7.8%, respectively. Meanwhile, for treated soil samples that mixed with banana, coconut and kenaf fibers are 1760kg/m3, 1780kg/m3, 1670kg/m3 and 8.2%, 8%, 11%, respectively. Hence, 0.5% mixing with banana fibers indicated the best possible amount of dry density and moisture content among other natural fibers. Therefore, this study proved that natural fibers can act as a good natural soil stabilizer in increasing stability of clay soil.

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Awareness of the Seismic Effect on Existing High-rise Building in Georgetown Penang

2024 , Shamilah Anudai @ Anuar , Nurul Nabila Mohd Salleh , Mustaqqim Abdul Rahim , Nor Faizah Bawadi

Abstract A seismic event is unpredictable and may occur worldwide depending on the movement of the fault line. The impact of this phenomenon on society, structures, sources and surroundings is significant to be investigated. Thus, this study aims to investigate the seismic awareness level and input information among Malaysians. Several far-field seismic activities in Malaysia have triggered some high-rise buildings, including residential and commercial ones. Due to this situation, the occupants started to worry about their safety living in high-rise buildings designed without seismic considerations. The most important initial step is to investigate the awareness level among the occupants. A survey has been conducted in Georgetown, Pulau Pinang area involving 208 respondents. Findings indicate the respondents have limited experience with seismic events in Malaysia and were never exposed to seismic information. Less than 50% declared to have adequate knowledge about seismic. Only 31.25% of the respondents were exposed to the seismic information. Respondents agree that Malaysia should apply a seismic code of practice for all construction buildings. Most respondents believe that preparation for upcoming seismic activities is still insufficient, and all new buildings should have seismic safety certificates in the future for seismic resistance.

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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.

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Green infrastructure : material and techniques

2020 , Nor Hayati Abdul Hamid , Ahmad Kamil Arshad , Muhd Norhasri Muhd Sidek , Shamilah Anudai @ Anuar

Human beings produce a lot of waste which can be used as recycled materials for benefits to the societies toward clean and green environments. Recycle Concrete Aggregate (RCA) from demolition buildings and dumping construction sites, Engineered Cementitious Concrete (ECC), Palm Oil Fuel Ash (POFA) from palm oil factories and Wood-wool Cement Board (WWCB) from softwood and hardwood can be used as construction materials are presented in this book. These recycled materials are recommended to be used for the construction of structural components such as wall panels, beams, columns and slabs for residential houses, warehouses, shop lots and commercial buildings. Cold in-Place Recycling (CIPR) and Nano Charcoal Ash (NCA) is produced after burning the coconut shell can be utilized in the construction of roads and highways are also discussed in this book. By using recycled construction materials in developing and constructing structures and infrastructures, we can sustain our green environment for our future generation. Henceforth, our world will be become green, less emission of CO2, save from chemical waste, fresh atmosphere and reduce the global warming effects which become serious in recent years.

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Influence of Banana Fiber on Shear Strength of Clay Soil

2020-07-09 , Nor Faizah Bawadi , Alhamidi M.A.A. , Ahmad Faizal Mansor , Shamilah Anudai @ Anuar

Recently, the agricultural waste have been enticed increasing attention in geotechnical engineering as a natural soil reinforcement in improving strength and stability of soils. Agricultural waste fiber was chosen as it is cheap, locally available, bio-degradable and eco-friendly. In this study, the implementation of banana fibers has been used as a natural soil reinforcement in influencing the strength of clay soil. In order to investigate the influence of banana fiber in strengthen the clay soil, three different percentage mixing of banana fiber in clay soil has been tested using Unconsolidated Undrained Triaxial and California Ratio Bearing (CBR) tests. The results of X-Ray Fluorescense (X-RF) indicated that average 45% of chemical compositions inside the banana fibers are calcium hydroxide which resulting the pozzolanic reactions and lead to the modification of soil properties and improve the strength of soil. This research is important in order to find the suitability of banana fiber as admixture in soil stabilization. Banana fiber as admixture in soil stabilization will contribute to conservation of the environment. The results from the tests conducted have shown that the soil treated with 1% fibre content improved termendously in term of shear strength compared to untreated sample. However, based on the regression analysis, 0.5% mixing of banana content indicate the optimum percentage mixing of banana fiber in clay soil.

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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.

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Relationship between Ultrasonic-Pulse Velocity and Compression Test for Different Grade of Concrete

2020-07-09 , Mustaqqim Abdul Rahim , Choon Onn L. , Nur Aizat Ahmad A. , Shahidan S. , Salwa Mohd Zuki S. , Shamshinar Salehuddin , Afizah Ayob , Shamilah Anudai @ Anuar , Nor Faizah Bawadi

Ultrasonic pulse velocity methods is one of the non-destructive testing methods. Commonly the compression test was used to determine the compression strength of concrete. Laboratory works had been carried out at heavy concrete laboratory to obtain the result for both non-destructive and destructive test. By using concrete cubes of sizes 100 x 100 x 100 mm and subjected to water curing for 7, 14, 21 and 28 days to obtained desire result for Ultrasonic Pulse Velocity and Compression test. Ultrasonic Pulse Velocity were initially done before the Compression test. The data obtained from each test has been evaluated and tabulated in this report. From this research, the variation between predicted strength and experimental strength for Ultrasonic Pulse Velocity testing was identified; the higher the pulse velocity, the higher the predicted strength and lower times passes by pulse velocity, the higher the predicted strength.

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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%).

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Physical and mechanical properties of coconut shell concrete (CSC)

2021-07-21 , Mustaqqim Abdul Rahim , Cheah S.W. , Afizah Ayob , Norlia Mohamad Ibrahim , Shamilah Anudai @ Anuar , Nor Faizah Bawadi , Shahidan S. , Ahmad A.N.A.

The use of waste products as partial replacement for the material in concrete can help to reduce the environmental and economic problem. Coconut shell (CS) is one of the agricultural waste that suitable to use as and coarse aggregates replacement due availability of CS which not only can help to decrease the cost of the concrete and reduce the environmental problem, it also can maintain the properties of the concrete. In this study, the compressive strength of the concrete has been chosen to be investigated. Three different types concrete cube have been casted in this study; 0, 10%, 15%, 20% of CS to replace for coarse aggregates. The size of the cube samples to be casted is 100 x 100 x 100 mm and were cured for 7 and 28 days. The study shows that the optimum percentage for CS concrete is 10% due to in this percentage of replacement, it gives the highest compressive strength value compare to other percentage at 28 days.

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Seismic analysis of single unit tunnel form building subjected to out-of-plane lateral cyclic loading using Ruaumoko 2D programme

2020 , Shamilah Anudai @ Anuar , Nor Faizah Bawadi , A S Aweis , A R Mustaqqim

To date, frequent seismic events are seen to cause major destruction to the countries that are hit by great Earthquake with magnitude greater than 7 Scale Richter. These kinds of disasters are unpredicted and may give negative impacts for structures and human. However, the consequences of seismic can be mitigated by characterizing the hazard that might be affecting the existing structures. Therefore, the performance of tunnel form building (TFB) has been examined under various level of earthquake events. Ten numbers of ground motions are selected based on previous earthquake records to determine the level of safety of single unit tunnel form building (TFB). Four previous earthquake records are selected from countries outside of Malaysia, while the other six previous earthquake records are selected from East and West Malaysia. The prototype building has then been modelled and analysed to obtain the maximum lateral displacement and lateral loading capacity to assess the structural deformation of the TFB at peak ground acceleration for selected past earthquake history. From this analysis, the safety level of TFB under selected ten past earthquake records are investigated. It can be concluded that this type of building survives under local earthquakes but experienced severe damage or collapse under major earthquakes deriving from countries outside of Malaysia.

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