Naveen Revanna and Charles K.S. Moy
This paper employs a textile reinforcement strain comparison to study the response of Textile Reinforced Mortars (TRM) strengthened reinforced concrete one-way slab members in…
Abstract
Purpose
This paper employs a textile reinforcement strain comparison to study the response of Textile Reinforced Mortars (TRM) strengthened reinforced concrete one-way slab members in flexure using the finite element method. Basalt TRM (BTRM) is a relatively new composite in structural strengthening applications. Experimental data on BTRMs are limited in the literature and numerical analyses can help further the understanding of this composite. With this notion, Abaqus finite element software is utilised to create a numerical method to capture the mechanical response of strengthened slab members instead of time-consuming laboratory experiments.
Design/methodology/approach
A numerical method is developed and validated using existing experimental data set on one-way slabs strengthened using Basalt TRMs from the literature. An explicit solver is utilised to analyse the finite element model created using calibrated Concrete Damage Plasticity (CDP) parameters according to the experimental requirements. The generated model is applied to extract load, deflection and rebar strains sustained by strengthened reinforced concrete slabs as observed from the experimental reference chosen. The applicability of the developed model was studied beyond parametric studies by comparing the generated finite element tensile strain by the textile fibre with available formulae.
Findings
CDP calibration done has shown its adaptability. The predicted results in the form of load versus deflection, tensile and compressive damage patterns from the numerical analysis showed good agreement with the experimental data. A parametric study on various concrete strength, textile spacing and TRM bond length obtained shows TRM’s advantages and its favourability for external strengthening applications. A set of five formulae considered to predict the experimental strain showed varied accuracy.
Originality/value
The developed numerical model considers strain sustained by the textile fibre to make results more robust and reliable. The obtained strain from the numerical study showed good agreement with the experiment results.
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Naveen Revanna and Charles K.S. Moy
A study on the mechanical characteristics of cementitious mortar reinforced with basalt fibres at ambient and elevated temperatures was carried out. To investigate their effect…
Abstract
Purpose
A study on the mechanical characteristics of cementitious mortar reinforced with basalt fibres at ambient and elevated temperatures was carried out. To investigate their effect, chopped basalt fibres with varying percentages were added to the cement mortar.
Design/methodology/approach
All the specimens were heated using a muffle furnace. Flexural strength and Compressive strength tests were performed, while monitoring the moisture loss to evaluate the performance of basalt fibre reinforced cementitious mortars at elevated temperatures.
Findings
From the study, it is clear that basalt fibres can be used to reinforce mortar as the fibres remain unaffected up to 500 °C. Minimal increases in flexural strengths and compressive strengths were measured with the addition of basalt fibres at both ambient and elevated temperatures. SEM pictures revealed fibre matrix interaction/degradation at different temperatures.
Originality/value
The current study shows the potential of basalt fibre addition in mortar as a reinforcement mechanism at elevated temperatures and provides experimental quantifiable mechanical performances of different fibre percentage addition.
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Turgut Var, William W. Swart and Charles E. Gearing
Although this is a survey of research techniques, it has become increasingly apparent, as the study has progressed, that our investigation of research methods for use in tourism…
Abstract
Although this is a survey of research techniques, it has become increasingly apparent, as the study has progressed, that our investigation of research methods for use in tourism and travel studies, without prior consideration of the nature and scopes of tourism and travel themselves, would he inadequate. At the outset it would be imperative to distinguish three interrelated terms. These are recreation, tourism, and travel.
The author argues that we must stop and take a look at what our insistence on human labour as the basis of our society is doing to us, and begin to search for possible…
Abstract
The author argues that we must stop and take a look at what our insistence on human labour as the basis of our society is doing to us, and begin to search for possible alternatives. We need the vision and the courage to aim for the highest level of technology attainable for the widest possible use in both industry and services. We need financial arrangements that will encourage people to invent themselves out of work. Our goal, the article argues, must be the reduction of human labour to the greatest extent possible, to free people for more enjoyable, creative, human activities.
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“FORMAL classes on how to use a library would be an insult to the intelligence of the student.” This was an extreme reply mentioned in the Report of the Committee on Libraries…
Abstract
“FORMAL classes on how to use a library would be an insult to the intelligence of the student.” This was an extreme reply mentioned in the Report of the Committee on Libraries, with reference to a questionnaire to academic staff about instruction in library use. This view of the teaching activities of librarians with students must be familiar to all librarians whether they are concerned with formal teaching activities or not. Nevertheless it is suggested that, in the current climate of change in the nature of sixth form studies, and the need for bibliographic training as part of a general education leading to informed library users in the academic and professional world, there is now a strong case for an examined course of study at “A” level G.C.E. incorporating the principles of bibliographical knowledge for users.
Elif Çakmak and Lorraine Rumson
In recent years, there has been no shortage of research on the enormous pressure women face to have children. Similarly, the pressures put on mothers and the impossibility for…
Abstract
In recent years, there has been no shortage of research on the enormous pressure women face to have children. Similarly, the pressures put on mothers and the impossibility for women to live up to the ideal standards of motherhood are increasingly the subject of scrutiny. However, a shadowy figure lurks in the cultural imagination: the woman who refuses to have a child, or worse, hates the children she has. If narratives of maternal distress, anxiety and regret represent ‘the last taboo’, then narratives of willful rejection exist even outside of those boundaries.
This chapter explores narratives of women who are villainised for their negative relationships to motherhood and mothering, in canonical texts of the Western Anglosphere culture. Drawing examples from the Bible, from Charles Dickens, and from the Disney corporation, Çakmak and Rumson demonstrate the variations and ongoing poignancy of the narrative that women who reject or fail to have children are evil.
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Prior to the 1970s, the enrollment of black students in U.S. medical schools was less than 3%. One-third of these students attended the three historically black medical schools…
Abstract
Prior to the 1970s, the enrollment of black students in U.S. medical schools was less than 3%. One-third of these students attended the three historically black medical schools that existed at that time. In 1970, the Association of American Medical Colleges (AAMC), representing the nation's medical schools, made a commitment for reaching parity of black medical student enrollment to that of the proportion of blacks in the U.S. population. The goal was that the enrollment of black students should reach 12% of total medical school enrollment. Within four years the enrollment of black students more than doubled to 7.5% by 1974. This greater than 100% enrollment increase was attributed to medical schools’ change in their commitment to affirmative action (Petersdorf, Turner, Nickens, & Ready, 1990; Cohen, Gabriel, & Terrell, 2002).
This paper examines the role of professional associations, governmental agencies, and international accounting and auditing bodies in promulgating standards to deter and detect…
Abstract
This paper examines the role of professional associations, governmental agencies, and international accounting and auditing bodies in promulgating standards to deter and detect fraud, domestically and abroad. Specifically, it focuses on the role played by the US Securities and Exchange Commission (SEC), the American Institute of Certified Public Accountants (AICPA), the Institute of Internal Auditors (IIA), the Institute of Management Accountants (IMA), the Association of Certified Fraud Examiners (ACFE), the US Government Accounting Office (GAO), and other national and foreign professional associations, in promulgating auditing standards and procedures to prevent fraud in financial statements and other white‐collar crimes. It also examines several fraud cases and the impact of management and employee fraud on the various business sectors such as insurance, banking, health care, and manufacturing, as well as the role of management, the boards of directors, the audit committees, auditors, and fraud examiners and their liability in the fraud prevention and investigation.