NOR HAYATI ABDUL HAMID
@uitm.edu.my
INSTITUTE FOR INFRASTRUCTURE ENGINEERING AND SUSTAINABLE MANAGEMENT
UNIVERSITI TEKNOLOGI MARA
EDUCATION
PHD
MASTER
BSc (Honors) Civil Engineering
RESEARCH INTERESTS
EARTHQUAKE ENGINEERING, STRUCTURAL DYNAMIC,SEISMIC DESIGN
PRECAST AND IBS SYSTEM
Scopus Publications
Scopus Publications
Muhd Norhasri Muhd Sidek, Mohamad Haris Hakim Mohd Nasir, Aidah Jumahat, Nuradila Izzaty Halim, Aidan Newman, Mohd Afiq Mohd Fauzi, and Nor Hayati Abdul Hamid
Springer Nature Singapore
Mohd Nizam Shakimon, Rohana Hassan, Nor Jihan Abd Malek, Azman Zainal, Ali Awaludin, Nor Hayati Abdul Hamid, Wei Chen Lum, and Mohd Sapuan Salit
MDPI AG
Many real-scale fire tests have been performed on timber connections to analyze the mechanical behavior of timber connections in previous years. However, little research focused on the bending performance of glued laminated (glulam) timber beam bolted connections after fire exposure. In this paper, the three-dimensional numerical model of the glulam timber beam bolted connections was developed and validated by experimental results. The model can simulate temperature evolution in the connections and their mechanical behavior. In the real-scale test, three (3) samples were prepared for a four-point bending test at normal temperature, while another three (3) samples were tested after exposure to a 30-min standard fire and cooled down to normal temperature. The results show the reduction of the load-carrying capacity before and after exposure to the standard fire by 23.9 kN (71.8%), 8.3 kN (26.1%), and 20.2 kN (47.6%) for bolt diameters of 12 mm, 16 mm, and 20 mm, respectively. The numerical model aims to conduct a parametric study and propose the modification of the exponential decay constant, k, for tropical glulam timber to predict the load-carrying capacity of the glulam timber beam bolted connections after exposure to standard fire.
Chao Bao, Xiaotong Ma, Dahai Lv, Qiaozhi Wu, Shu Ing Doh, Siew Choo Chin, Hongbo Shu, and Nor Hayati Abdul Hamid
Elsevier BV
Tengku Anita Raja Hussin, Rohana Hassan, Ali Awaludin, Muhd Norhasri Muhd Sidek, Nor Hayati Abdul Hamid, and Mohd Sapuan Salit
Horizon Research Publishing Co., Ltd.
Nurfarhana Diyana Hadi, Nor Hayati Abdul Hamid, Ili Farhana Azmi, Rohana Hassan, Yeri Sutopo, Bao Chao, and Nurul Azmi Zainuddin
FapUNIFESP (SciELO)
R. Kusumawardani, N. Qudus, A. B. Sabba, N. C. Nugroho, N. H. A. Hamid, S. A. Kudus, A. Alisibramulisi, R. Hassan, A. Kusbiantoro, N. M. Ermansyah,et al.
Springer Nature Singapore
M. M. H. Shamsudin, N. H. Hamid, M. N. M Sidek, T. I. S. T Aziz, H. Awang, and B. Chao
Horizon Research Publishing Co., Ltd.
Haryati Awang
International Journal of Geomate
N D Hadi and N H Hamid
IOP Publishing
A. O. A. Zamli, R. Hassan, M. N. M. Sidek, A. Awaludin, B. Anshari, N. H. A. Hamid, and S. M. Sapuan
Springer Singapore
N. H. Hamid and M. M. H. Shamsudin
Springer Singapore
N. H. Hamid, N. F. D. Hadi, and I. F. Azmi
Springer Singapore
M.M.H. Shamsudin, N.H. Hamid, and M.A. Mohd Fauzi
Trans Tech Publications, Ltd.
This paper presents the feasibility study of adding recycled Polyethylene Terephthalate (PET) fiber obtained from drinking water bottle as admixture material in the concrete. A few numbers of tests were conducted to determine the physical and mechanical properties of recycled PET fiber reinforced concrete such as slump test, compressive strength test and flexural strength test. The effect of incorporating the recycled PET fiber on various volume fractions of concrete by 0.5%, 1%, and 1.5% of weight of cement were experimentally investigated. The test specimens comprising of cubes and beams were prepared and tested at 3, 7, 14 and 28 days after curing process completed. Generally, it was found that the workability of concrete reinforced recycled PET has reduced as the volume fraction of PET fiber increased. The compressive strength of concrete reinforced recycled PET has reached the highest value at volume fraction of 0.5%. However, the flexural strength of concrete was significantly increased by incorporating 1.0% of recycled PET fiber. It can be concluded that the concrete which contains 0.5% of recycled PET fiber has the highest of average percentage of relative. Hence, it can be categorized as the optimum percentage of recycled PET fiber to be utilized in concrete. It is recommended to use recycled PET fiber in concrete for the construction of structures and infrastructures as a green construction material in order to achieve clean and sustainable environment in the year future.
M.A. Amir and N.H. Hamid
Trans Tech Publications, Ltd.
Recently, there are a lot of technological developments in the earthquake engineering field to reduce structural damage and one of them is a base isolation system. The base isolation system is one of the best technologies for the safety of human beings and properties under earthquake excitations. The aim of this paper is to review previous research works on simulation of base isolation systems for RC buildings and their efficiency in the safety of these buildings. Base isolation decouples superstructure from substructure to avoid transmission of seismic energy to the superstructure of RC buildings. The most effective way to assess the base isolation system for RC building under different earthquake excitations is by conducting experiment work that consumes more time and money. Many researchers had studied the behavior of base isolation system for structure through modeling the behavior of the base isolation in which base isolator is modeled through numerical models and validated through experimental works. Previous researches on the modeling of base isolation systems of structures had shown similar outcomes as the experimental work. These studies indicate that base isolation is an effective technology in immunization of structures against earthquakes.
Abdul Aziz Hamzah, Zatul Amilah Shaffiei, Nor Hayati Abdul Hamid, and Nurulnadwan Aziz
International Association for Educators and Researchers (IAER)
M. Mazlina, M. S. Liew, A. Adnan, I. S. H. Harahap, and N. H. Hamid
Springer Singapore
C. Bao, F.Z. Xu, G. Chen, S.R. Zhang, K.S. Lim, X.T. Ma, and N.H. Hamid
Elsevier BV
Abstract The uneven settlement of foundation is one of the common engineering quality problems in collapsible loess areas. Especially in seismic regions, the structures with uneven foundation settlements are facing the enormous risks. In order to study the seismic response of structures with uneven settlement of foundation, the influence of settlement area and settlement amount on the seismic response of structure are analyzed by using nonlinear time-history analysis method. The results show that: the variation of settlement area and settlement amount has no significant effect on the inter-story drift ratio. The components severely damaged under earthquake are those distributed in or near the settlement area. The location of the settlement area has a significant impact on the seismic damage of the structure. With the increase of the settlement amount and earthquake intensity, the plastic hinge in the structure increases significantly. The settlement amount and earthquake intensity cause the variation of structural nonlinear property and energy dissipation mechanical.
A.G. Kay Dora, N.H. Hamid, M.I.F. Rozli, and Z. Che Nooryohana
IOP Publishing
Yeri Sutopo, Budi S. Wignyosukarto, Bambang Yulistyanto, Istiarto Istiarto, and Nor Hayati Abdul Hamid
Penerbit UTM Press
The Chanson’s equation for distribution of air bubbles in vertical direction in the developing zone at self-air entrainment condition is used when the air bubbles concentration at the flow surface is 90%. Otherwise, if this condition is not satisfying, then the equations of Straub and Anderson can be used. The results of these two equations are not similar with experimental results. Therefore, these two equations need to be modified accordingly. These modification equations can also be used to predict the air bubbles distributions in vertical direction. Hence, the main objective of this study is to modify these equations for vertical air concentration distribution in the developing zone and validate them with experimental results. The steep channel in the form of flume with 10 m long, 0.2 m wide and 0.4 m high with slopes varies between 20° and 25° were used in this experimental work. The discharge water was 9 l/s, 12 l/s and 21 l/s with Froude numbers between 6.9 to 8.0. The Thomson weir (V Notch) was used to calibrate the discharge flow of water. A set of video cameras was used to record the motion pictures of the air bubbles. The air bubble was analyzed using Ulead Video Studio 11 software program equipped with Imagej software. The results of this study indicates that the modifications of equations of Straub and Anderson were the equation air concentration distribution (C) in the underlying zone value was 0.647 m at 20° slope of channel bed, the equation air concentration distribution (C) in the underlying zone the value was 0.542 m at 25° slope and the equation in the mixing zone remained the same. The original Chanson equation was modified mainly in terms of the hyperbolic tangent (tanh) equation which originally had a power of 2 while the modification was 0.8; and the Ce was 0.9 sin α, whereas at the modified Chanson’s equation, Ce was converted into Ce= 0.6 sin α.