Search results
1 – 10 of 15Mariyana Aida Ab Kadir, Mohammad Iqbal Khiyon, Abdul Rahman Mohd. Sam, Ahmad Beng Hong Kueh, Nor Hasanah Abdul Shukor Lim, Muhammad Najmi Mohamad Ali Mastor, Nurizaty Zuhan and Roslli Noor Mohamed
The purpose of this paper is to examine the mechanical properties, material composition of spent garnet as a sand replacement in high-strength concrete at room and elevated…
Abstract
Purpose
The purpose of this paper is to examine the mechanical properties, material composition of spent garnet as a sand replacement in high-strength concrete at room and elevated temperatures. Bonding of the concrete containing spent garnet and reinforcing rebar is investigated. Moreover, the optimum thickness of concrete cover subjected to elevated temperatures is investigated.
Design/methodology/approach
First, the plain spent garnet was physically, chemically and thermally studied. Then, a series of concrete specimens with 0, 20, 40, 60, 80 and 100 per cent of spent garnet were prepared to determine the optimum percentage of spent garnet. Finally, the physical and mechanical behaviours of concrete specimens and effects of cover thickness on steel rebar when subjected to elevated temperature of 200°C, 400°C, 600°C and 800°C for 1 h were studied. It was observed that spent garnet was thermally stable compared to river sand.
Findings
Mechanical properties were found to be optimal for concrete with 40% spent garnet replacement. Physically, spent garnet concrete changed colour to brown at 400°C, and to whitish grey at 600°C. The residual compressive strength of spent garnet concrete was also found slightly higher than that for control specimens. At various high temperatures, the reduction in ultimate tensile stress for steel bar inside concrete cover of 30 mm was the lowest compared to that of 20 mm.
Research limitations/implications
Spalling effect it not considered in this study.
Practical implications
The optimum concrete cover is important issues in reinforced concrete design. This can be used as a guideline by structural designers when using a different type of concrete material in the construction.
Social implications
Utilization of the waste spent garnet reduces usage of natural aggregates in concrete production and enhances its performance at elevated temperatures. Natural aggregates are normally taken from sand and rock. The new innovation in concrete perhaps can produce light concrete, reduce the cost of concrete production and at the same time also mitigates environmental problems affect from waste material such as minimizing disposal area.
Originality/value
Utilization of spent garnet in ordinary Portland cement (OPC) concrete at high temperature is a new innovation. It shows that the concrete cover of the concrete element reduced as compared to the OPC concrete. Reduce in weight concrete however the strength of concrete is similar to conventional concrete. This study at elevated temperature has never been performed by any previous researcher.
Details
Keywords
Nurizaty Zuhan, Mariyana Aida Ab Kadir, Muhammad Najmi Mohamad Ali Mastor, Shek Poi Ngian and Abdul Rahman Mohd. Sam
Concrete-filled steel hollow (CFHS) column is an innovation to improve the performance of concrete or steel column. It is believed to have high compressive strength, good…
Abstract
Purpose
Concrete-filled steel hollow (CFHS) column is an innovation to improve the performance of concrete or steel column. It is believed to have high compressive strength, good plasticity and is excellent for seismic and fire performance as compared to hollow steel column without a filler.
Design/methodology/approach
Experimental and numerical investigation has been carried out to study the performance of CFHS having different concrete in-fill and shape of steel tube.
Findings
In this paper, an extensive review of experiment performed on CFHS columns at elevated temperature is presented in different types of concrete as filling material. There are three different types of concrete filling used by the researchers, such as normal concrete (NC), reinforced concrete and pozzolanic-fly ash concrete (FC). A number of studies have conducted experimental investigation on the performance of NC casted using recycled aggregate at elevated temperature. The research gap and the recommendations are also proposed. This review will provide basic information on an innovation on steel column by application of in-filled materials.
Research limitations/implications
Design guideline is not considered in this paper.
Practical implications
Fire resistance is an important issue in the structural fire design. This can be a guideline to define the performance of the CFHS with different type of concrete filler at various exposures.
Social implications
Utilization of waste fly ash reduces usage of conventional cement (ordinary Portland cement) in concrete production and enhances its performance at elevated temperature. The new innovation in CFHS columns with FC can reduce the cost of concrete production and at the same time mitigate the environmental issue caused by waste material by minimizing the disposal area.
Originality/value
Review on the different types of concrete filler in the CFHS column. The research gap and the recommendations are also proposed.
Details
Keywords
Ahmad Thamrini Fadzlin Syed Mohamed, Ahmad Fahimi Amir, Nur Khadirah Ab. Rahman, Emily Abd Rahman and Afifah Quraishah Abdul Nasir
The purpose of this paper is to give insight on the important preparation task needed to be considered by prospective PhD candidates prior to the start of their study. As pursuing…
Abstract
Purpose
The purpose of this paper is to give insight on the important preparation task needed to be considered by prospective PhD candidates prior to the start of their study. As pursuing and obtaining a higher degree qualification is becoming more eminent for those who want to advance their academic career, crucial preparation is needed before embarking on the doctoral quest.
Design/methodology/approach
A small-scale study of the PhD experience was carried out in a public university in Malaysia using semi-structured in-depth interviews with eight successful doctoral students representing three different faculties to assess respondents’ experiences concerning the preparation aspect, challenges faced and strategies used to overcome the problem.
Findings
From the interview data, three overarching themes emerged: motives, task and financial and health as important dominators that could influence a successful venture of a PhD journey.
Research limitations/implications
As the present research respondents were few, further research with bigger number of respondents may shed better light in identifying other important aspect in preparation for PhD. The authors are unable, in the space of this paper, to fully explore the implications of the data, and the work of others that it builds on, for the future of professional doctorates or other types of PhD awards. As professional doctorates are fully concentrated on their professional endeavour, i.e. nursing and education, the preparation needed may include different groundwork. In addition, this study was carried out in Malaysia, where the system may not necessarily share the same characteristics to other doctoral systems in other countries. Cultural differences, the impact of age, gender and race, were other variables that could be weighed by future research in the same area.
Practical implications
The university’s graduate office should line-up courses to inform future doctoral candidates on the aspect of preparation at personal level that the students need to carry out.
Social implications
The study provides new views where potential doctoral students should be helped and guided to become more consciously aware of their decision in pursuing a higher degree. This paper provides suggestions on the guidelines of the initial preparation needed before embarking on a PhD journey and managing their own learning.
Originality/value
The paper establishes the important aspect of the preparation phase needed to be considered by future doctoral students before pursuing their doctoral quest.
Details
Keywords
Hassanudin Mohd Thas Thaker, Ahmad Khaliq, Mohamed Asmy Bin Mohd Thas Thaker, Anwar Bin Allah Pitchay and K. Chandra Sakaran
The purpose of this paper is to examine the factor persuading the acceptance of Islamic pawn broking (Ar-Rahnu) among Islamic bank customers.
Abstract
Purpose
The purpose of this paper is to examine the factor persuading the acceptance of Islamic pawn broking (Ar-Rahnu) among Islamic bank customers.
Design/methodology/approach
The authors collected the data using a self-administered questionnaire design and analysed using SPSS Statistics and smart partial least square. The study is restricted to only respondents who are based in the area of Klang Valley (Selangor and Kuala Lumpur), as these two areas have a larger number of Islamic banks and a decent number of Islamic banks’ clients. A total of 381 respondents’ responses are used for this study, and the constructs involved for analysis purpose are affect, social factor, facilitating conditions, perceived financial benefits and perceived risk constructs.
Findings
The finding suggests a significant positive association for social factor and perceived risk, while negative association learnt for affect on acceptance of Ar-Rahnu financing. On the same note, the facilitating condition and perceived financial benefit are found insignificantly related.
Practical implications
The findings generated from this study are expected to enrich the literature on the body of knowledge, as it has served to broaden the understanding of the Ar-Rahnu acceptance level in Malaysia. As mentioned, there is limited literature available using this type of financing. Existing studies focus too much on conventional financing products such as personal financing, credit card, short-term loan and many others. Less attention is given to Ar-Rahnu financing. Thus, this study expected to add value to the literature available in the context of Islamic pawn broking business. Moreover, the findings of this study will be very helpful for the Islamic financial institutions to find the best way to retain Ar-Rahnu clients and encourage more client to choose Ar-Rahnu as a mode of financing.
Originality/value
This study owns greater potential to assist Islamic financial institutions to discover the best techniques to retain and encourage the grander number of clients for Ar-Rahnu as a mode of financing.
Details
Keywords
The main purpose of the study is to examine the influence of family directors on the firm performance of public listed companies (PLCs) in Malaysia. This study provides empirical…
Abstract
Purpose
The main purpose of the study is to examine the influence of family directors on the firm performance of public listed companies (PLCs) in Malaysia. This study provides empirical evidence on the agency problems between controlling shareholders and minority interests in the concentrated ownership setting.
Design/methodology/approach
Samples of the study are 112 PLCs in year 2006. Two measures of firm performance are used: return on assets (ROA) and Tobin’s Q. Managerial ownership refers to the percentage shareholdings of executive directors with direct and indirect holdings. It was further categorized into family ownership and non-family ownership.
Findings
In relation to ROA, managerial ownership is found positively significant. The results also show that the positive relationship between managerial ownership is contributed by the managerial-non-family ownership. In relation to Tobin’s Q, the results show a U-shape with turning point at 31.38% for managerial ownership and 28.29% for the managerial-family ownership. The results found significant and positive relationships between managerial ownership and both measures of firm performance which indicates that managerial ownership and family ownership yield greater efficiency.
Research implications
The study highlights the effects of corporate governance on ROA and Tobin’s Q are somewhat different. It provides some evidence on the need to use appropriate measure of firm performance. The significant relationship supports the argument of Chami (1999), Fama and Jensen (1983), and DeAngelo and DeAngelo (1985) and empirical evidence of Lee (2004) that family ownership enhances monitoring activities.
Originality/value
Differentiating the types of managerial ownership into family and non-family categories enriches our knowledge about who actually contributes to the improved performance.
Details
Keywords
The purpose of this study is to examine the legal framework for court-annexed dispute resolution in courts with Sharī‘ah jurisdiction in Nigeria, Malaysia and Singapore. The major…
Abstract
Purpose
The purpose of this study is to examine the legal framework for court-annexed dispute resolution in courts with Sharī‘ah jurisdiction in Nigeria, Malaysia and Singapore. The major part of the study is dedicated to propose reforms in the administration of justice system in the courts with Sharī‘ah jurisdiction in Nigeria and the relevance of such reforms to the ongoing reforms in the Middle East and North African (MENA) countries.
Design/methodology/approach
This is an integrative literature review, which adopts a comparative approach in analyzing the conceptual framework of amicable dispute resolution in the modern world with particular reference to the Sharī‘ah court.
Findings
The findings of this research illustrate the adaptability of the practices in Malaysia and Singapore in the courts with Sharī‘ah jurisdiction in Nigeria and the MENA region.
Practical implications
An exposition of the dispute resolution processes in Islamic law reveals the relevance of these processes in modern reforms of the administration of justice system. The practical implications of this study include the streamlining of the rules and procedures of modern Sharī‘ah courts in post-revolution Arab countries to allow for court-annexed amicable (alternative) dispute resolution initiatives.
Originality/value
As far as it is known, this is the first conceptual study on the court-annexed dispute resolution frameworks of Sharī‘ah courts in three commonwealth jurisdictions.
Details
Keywords
Fatimah De'nan, Megat Azmi Megat Johari, Shaneez Christie Anak Nyandau and Nor Salwani Hashim
The purpose of this study is to know the influence of palm oil fuel ash and metakaolin on the strength of concrete and crack resistance of reinforced concrete beam. An ordinary…
Abstract
Purpose
The purpose of this study is to know the influence of palm oil fuel ash and metakaolin on the strength of concrete and crack resistance of reinforced concrete beam. An ordinary portland cement has been used in the concretes production where it is an important material to be considered due to its nature that reacts with every substance present. During the cement production, a significant amount of carbon dioxide is emitted from the clinker in rotary kiln and lot of energy is required in the production processes. Such an event can be prevented by replacing the part of cement with metakaolin (MK) and palm oil fuel ash (POFA). Aside from being a cementitious alternative, the materials can also contribute to a greener environment and more sustainable building, as POFA is available in Malaysia and may be used to substitute cement and minimize pollution.
Design/methodology/approach
This study assesses the effect of MK and POFA on the concrete in terms of compressive strength and cracks pattern of the reinforced concrete beam based on the relevant previous studies.
Findings
From this study, the compressive strength of concrete containing MK and POFA was higher than the control mix with the percentage of improvement in the range of 0.8%–78.2% for MK and 0.5%–14%, respectively. The optimum content of MK and POFA is between the range of 10% and 15% and 10% and 20%, respectively, to achieve high strength of concrete. Other than that, the inclusion of MK to the concrete mix improves the strength of reinforced concrete beams and reduces cracks on the surface of reinforced concrete beams, whereas the inclusion of POFA to the concrete mix increases the cracks on reinforced concrete beams. The cracks appeared within the flexure zone of every beam containing the MK and POFA.
Originality/value
It was found that the fineness of MK and POFA has a significant influence on the mechanical properties of concrete.
Details
Keywords
“BY WHAT CRITERIA”, a modern Socrates might ask his pupils, “are we to know that a good woman is good ?” And the pupils, after pondering for many months, might reply “We have…
Abstract
“BY WHAT CRITERIA”, a modern Socrates might ask his pupils, “are we to know that a good woman is good ?” And the pupils, after pondering for many months, might reply “We have sought out many good women and they tell us that their measurements are 36‐23‐36; know therefore that any woman who conforms to these measurements is a good woman, but any woman who fails to so conform is not a good woman”. But Socrates would know that a woman might conform to these measurements yet still be ugly in appearance and shrewish by temperament; cold and unloving, while conversely many women could be paragons of womanliness and be nowhere near these measurements.
Mazlina Mustapha and Ayoib Che Ahmad
The purpose of this paper is to investigate the effect of managerial ownership in relation to agency theory in the Malaysian business environment. In addition to examining the…
Abstract
Purpose
The purpose of this paper is to investigate the effect of managerial ownership in relation to agency theory in the Malaysian business environment. In addition to examining the total managerial shareholdings, this study also investigates the association between direct and indirect managerial shareholdings with agency costs.
Design/methodology/approach
The data for the study is obtained from two sources, namely primary (questionnaire) and secondary (annual reports) data. The sample companies are 235 companies listed on Bursa Malaysia for the financial year ended 2006. Multiple regression analysis is used to estimate the relationship between the variables.
Findings
The results of the study indicate that managerial ownership in various segments has an inverse relationship with total monitoring costs as predicted in agency theory. This finding is consistent with earlier studies in western countries and supports the convergence of interest hypothesis.
Originality/value
This study gives a unique contribution to corporate governance studies relating to the effect of ownership structure in relation to agency theory in Malaysian companies, one of the countries in Asia. Previous studies claimed that it is unknown whether the agency theory findings in western countries have equal impact in Asian organizations. Previous literature also indicates that there is a possibility that given the cultural differences, the typical nature of agents in agency theory may not be the case with regard to non‐western countries. Thus, this study provides evidence that support prior research findings in western countries relating to the effect of managerial ownership on the agency relationship which is reflected in its agency costs.
Details