EXPERIMENTAL STUDY ON RECYCLED CONCRETE WITH STEEL FIBERS AS A SUSTAINABLE BUILDING MATERIAL

2015 ◽  
Vol 2 (1) ◽  
Author(s):  
Olivia Mirza ◽  
Dane Wigg ◽  
Won Hee Kang ◽  
Sepani Senaratne ◽  
Vivian Tam ◽  
...  
Keyword(s):  
Natural Resources ◽  
Construction Industry ◽  
Construction Material ◽  
Experimental Studies ◽  
Recycled Concrete ◽  
Steel Fibers ◽  
Future Research ◽  
Sustainable Solutions ◽  
Structural Reinforcement ◽  
The Impact

The global demand for construction aggregate exceeds 26 billion tons per year. With global policy attention directed towards climate change, environmental and economic sustainability, changes are required to the Australian construction industry regarding the extraction of natural resources. In particular, the concrete industry requires seeking innovative, sustainable solutions for reducing the impact of construction and maintenance on the environment. The majority of structures in Australia use reinforced concrete. Therefore, using environmentally and economically sustainable materials such as recycled concrete in construction would preserve natural resources and reduce construction waste and overall costs. There is considerable research available on the use of recycled concrete as a construction material and the use of steel fibers as structural reinforcement has been studied since the 1960’s. However, there is very little research on the combination of the two as a construction material for concrete structures. This study focused on secondary beams made of recycled concrete with the incorporation of steel fibers. This combination offers a structurally sound material that will provide a durable and sustainable solution to Australian Construction Industry. Experimental studies were conducted to validate the performance of the new material in a structural application. Based on the results of the study, recommendations for future research and design applications using these materials are made.

scholarly journals HOW GREEN TRANSFORMATIONAL LEADERSHIP INFLUENCES SUSTAINABILITY? MEDIATING EFFECTS OF GREEN CREATIVITY AND GREEN PROCUREMENT

2021 ◽  
Vol 11 (4) ◽  
pp. 69-87 ◽  
Author(s):  
Ashok Kumar Shah ◽  
Yu Jintian ◽  
Dinesh Sukamani ◽  
Manita Kusi
Keyword(s):  
Transformational Leadership ◽  
Construction Industry ◽  
Structural Equation ◽  
Practical Implication ◽  
Green Building ◽  
Future Research ◽  
Green Procurement ◽  
Positive Effects ◽  
Project Team Member ◽  
The Impact

Research on environment management in construction industry is as topic of debate globally. Thus, this study examined how green transformational leadership played for green building sustainability via green creativity and green procurement. We developed an assimilated research model to examine the impact of green transformational leadership, green creativity and green procurement on sustainability in construction industry by accessing resources-based view theory and componential theory of creativity. The sample included from 305 project team member of construction firm in Nepal. Structural equation model (SEM) using SPSS 25.0 and AMOS 24.0 have been applied to find empirical results. The results revealed direct positive effects of green transformational leadership, green creativity and green procurement on sustainability. Green transformational leadership also appeared as predictor of green creativity and green procurement. Moreover, green creativity and green procurement found partial mediators of the relationship between green transformational leadership and sustainability in construction industry. Discussed future research direction along with theoretical implication and practical implication for environment policymakers and researcher attentive in promoting sustainability in construction industry.

scholarly journals Construction worker productivity in hot and humid weather conditions

2019 ◽  
Vol 27 (1) ◽  
pp. 83-108
Author(s):  
Ammar Saeed Mohammed Moohialdin ◽  
Fiona Lamari ◽  
Marc Miska ◽  
Bambang Trigunarsyah
Keyword(s):  
Real Time ◽  
Construction Industry ◽  
Productivity Loss ◽  
Weather Conditions ◽  
Research Field ◽  
Future Research ◽  
Time Data ◽  
Worker Productivity ◽  
Content Type ◽  
The Impact

Purpose The purpose of this paper shows the effect of hot and humid weather conditions (HHWCs) on workers that has resulted in considerable loss in the construction industry, especially during the hottest periods due to decline in worker productivity (WP). Until the last few decades, there is very limited research on construction WP in HHWCs. Nevertheless, these studies have sparked interests on seeking for the most appropriate methods to assess the impact of HHWCs on construction workers. Design/methodology/approach This paper begins by reviewing the current measuring methods on WP in HHWCs, follows by presenting the potential impact of HHWCs on WP. The paper highlights the methodological deficiencies, which consequently provides a platform for scholars and practitioners to direct future research to resolve the significant productivity loss due to global warming. This paper highlights the need to identify the limitations and advantages of the current methods to formulate a framework of new approaches to measure the WP in HHWCs. Findings Results show that the methods used in providing real-time response on the effects of HHWCs on WP in construction at project, task and crew levels are limited. An integration of nonintrusive real-time monitoring system and local weather measurement with real-time data synchronisation and analysis is required to produce suitable information to determine worker health- and safety-related decisions in HHWCs. Originality/value The comprehensive literature review makes an original contribution to WP measurements filed in HHWCs in the construction industry. Results of this review provide researchers and practitioners with an insight into challenges associated with the measurements methods and solving practical site measurements issues. The findings will also enable the researchers and practitioners to bridge the identified research gaps in this research field and enhance the ability to provide accurate measures in HHWCs. The proposed research framework may promote potential improvements in the productivity measurements methods, which support researchers and practitioners in developing new innovative methods in HHWCs with the integration of the most recent monitoring technologies.

I am ugly, but I am tender: the dominance of moral character and warmth

2018 ◽  
Vol 8 (2) ◽  
pp. 153-176
Author(s):  
Joseph W. Chang
Keyword(s):  
Experimental Studies ◽  
Moral Character ◽  
Negative Influence ◽  
Thinking Styles ◽  
Future Research ◽  
Moral Intuitions ◽  
Content Type ◽  
Brand Evaluations ◽  
Culture Characteristics ◽  
The Impact

Purpose The purpose of this paper is to investigate the dominance of athlete endorser characteristics (i.e. moral character vs warmth) on athlete endorser perception and the influence of tarnished athlete endorsers (i.e. immoral character vs coldness) on brand evaluations from the perspectives of perceiver characteristics, including dispositional tendency, innate moral intuitions, and self-location (SL). Design/methodology/approach This research consists of three experimental studies with 135, 72, and 91 participants, respectively. Study 1 compared the dominance of moral character and warmth on athlete endorser perception. Study 2 examined the impact of perceiver characteristics on the cause-and-effect relationship between tarnished athlete endorsers (i.e. immoral character vs coldness) and brand evaluations. Study 3 investigated the cross-cultural generalizability of the US-based research findings in Study 2 for Indians. Findings Moral character is more influential than warmth on athlete endorser evaluations. Tarnished athlete endorsers with immoral character exert more negative influence than tarnished athlete endorsers with coldness characteristic on brand evaluations. Except for dispositional tendency, innate moral intuitions and SL moderate brand evaluations. Endorser and perceiver characteristics yield asymmetric patterns of influence on Americans’ and Indians’ brand evaluations. Research limitations/implications Future research is needed to verify the causal effects of thinking styles on the relationship between tarnished athlete endorsers and brand evaluations. Practical implications The determination of endorsement continuity has to jointly consider the characteristics of endorsers, perceivers, and cultures. Originality/value This research contributes to the endorsement research by advancing the research scopes of athlete endorser, perceiver, and culture characteristics.

scholarly journals Values Narratives for Personal Growth: Formative Evaluation of the Laws of Life Essay Program

2015 ◽  
Vol 59 (2) ◽  
pp. 269-293
Author(s):  
Victoria Banyard ◽  
Sherry Hamby ◽  
Ed de St. Aubin ◽  
John Grych
Keyword(s):  
Character Education ◽  
Process Evaluation ◽  
Personal Growth ◽  
Expressive Writing ◽  
Experimental Studies ◽  
Well Being ◽  
Future Research ◽  
Long Term Effects ◽  
The Impact ◽  
Writing Exercises

Evidence that even very brief writing exercises can change the way people see themselves and promote more positive mental and physical health has led to increased interest in their use in school settings and elsewhere. To date, however, research designs rely heavily on samples of college students and experimental studies of writing tasks carried out in the lab. There has been less investigation of the potential impact of more naturally occurring expressive writing exercises that exist in places like schools and that focus on adolescents. The current study was a process evaluation of the Laws of Life Essay, a values-based narrative program that was part of participants’ secondary school experience. It examined participants’ views of the impact of the program on their personal growth and, given the age range of participants, allowed for process evaluation of its perceived short- and long-term effects. Qualitative, semistructured interviews with 55 adolescent and adult participants were collected. Themes in participants’ responses included the importance of reflection and reappraisal of values, adversity, and relationships. Participants also discussed the importance of an audience for their writing, a novel finding that suggests one possible way to increase the impact of other narrative programs. Participants described variability in their engagement with expressive writing. This is one of the few studies that examined participants’ own views of the value of expressive writing and their responses suggest directions for future research and implications for designing expressive writing tasks to support social emotional learning and character education in schools and promote well-being at key developmental moments.

scholarly journals Use and impact of smartphone apps in mental health

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
A Amerio ◽  
A Scardoni ◽  
L Bellini ◽  
S Salvati ◽  
S Buttigieg ◽  
...  
Keyword(s):  
Mental Health ◽  
Mental Disorders ◽  
Clinical Decision Making ◽  
Healthcare Providers ◽  
Experimental Studies ◽  
Clinical Decision ◽  
Future Research ◽  
Smartphone Apps ◽  
Health Apps ◽  
The Impact

Abstract As smartphone usage is more and more ubiquitous, the app market is flourishing in all fields, including health. Indeed, the availability and use of smartphone apps (SAs) in health has exponentially grown in recent years. It has been estimated that in 2018 there were over 97,000 health apps available and that, 15% and 8% of US phone users aged 18-29 and 30-49 years respectively had health apps installed on their mobile devices. Health apps might potentially support people health paths in multiple ways: channeling health education, enabling personal health data tracking, self-monitoring and goals setting, facilitating access to health records or compliance to treatment, fostering effective communication with healthcare providers and health services, as well as supporting clinical decision-making. Despite such large potential, still scant evidence is available on the impact of SAs on clinical outcomes in different fields of medicine, including mental health. With an estimated prevalence of around 450 million people currently suffering from mental disorders and 1 in 4 people in the world affected at some point in own life, mental disorders are a leading cause of ill-health and disability worldwide whose prevention and care might be enhanced by mHealth technology. The general aim of the presentation is to provide an overview on the use and impact of SAs in the field of mental health. Specific objectives are: i) to present a conceptual framework on how SAs might support mental disorders prevention, diagnosis and treatment, ii) to report on SAs use in mental health in different settings, iii) to collect and pool available evidence from observational and experimental studies on the impact of SAs use on different mental health outcomes, iv) to explore the quality, effectiveness and attributes of top-rated smartphone mental health apps and lastly, v) to suggest gaps in knowledge to be filled by future research.

The interplay of social responsibility consciousness and evaluation mode in consumers’ response toward cause-related marketing-enhanced product

2019 ◽  
Vol 32 (8) ◽  
pp. 1651-1674
Author(s):  
Eun Young Park ◽  
Jung Min Jang
Keyword(s):  
Social Responsibility ◽  
Purchase Intention ◽  
Experimental Studies ◽  
Presentation Mode ◽  
Future Research ◽  
Price Fairness ◽  
Content Type ◽  
Cause Related Marketing ◽  
Evaluation Mode ◽  
The Impact

Purpose The purpose of this paper demonstrate that purchase intention toward a cause-related marketing (CRM)-enhanced product can be positively correlated with consumers’ social responsibility consciousness (SRC) and can be increased or decreased merely by changing the evaluation mode. Design/methodology/approach The authors conduct three experimental studies with two levels of SRC (high vs low) × two evaluation modes (joint evaluation (JE) vs separate evaluation (SE)) between-subjects design. The dependent variable is purchase intent toward the CRM-enhanced product. Findings The results indicate that consumers with high SRC are more likely than those with low SRC to purchase a CRM-enhanced product when two products are presented side by side (JE). However, consumers’ SRC level does not impact purchase intention when they see only one product (SE) independently (Study 1). The authors confirm that the proposed effect is mediated by perceived price fairness toward the product (Studies 2 and 3). Research limitations/implications Future research on CRM-enhanced products should carefully consider that the impact of individuals’ SRC level was in very different directions depending on the evaluation mode. In addition, further investigation is needed to address generalizability issues regarding samples and hypothetical stimuli. Practical implications These findings offer recommendations to help practitioners design effective marketing communications about CRM practice for target markets. Originality/value To the authors best knowledge, the current study is the first attempt to explore the crucial role of SRC, presentation mode and their interaction on purchase intention toward CRM-enhanced products.

The Effects of Pre-Task Planning on Second Language Writing: A Systematic Review of Experimental Studies

2021 ◽  
Vol 44 (2) ◽  
pp. 131-165
Author(s):  
Rod Ellis
Keyword(s):  
Second Language ◽  
Second Language Writing ◽  
Experimental Studies ◽  
Future Research ◽  
Task Planning ◽  
Writing Quality ◽  
Moderating Variables ◽  
Online Planning ◽  
Language Writing ◽  
The Impact

Abstract There are both pedagogical and theoretical grounds for asking second language writers to plan before they start writing. The question then arises whether pre-task planning (PTP) improves written output. To address this question, this article reviewed 32 studies by comparing the effect of PTP either with no planning or with unpressured online planning (OLP). These studies also investigated the moderating effect of variables relating to the writer participants, the nature of the planning, and the writing tasks. The main findings are: (1) There is no clear evidence that PTP leads to better overall writing quality when this is measured using rating rubrics, (2) PTP generally results in more fluent writing, (3) its impact on syntactical and lexical complexity is inconsistent and negligible, (4) OLP does sometimes result in increased linguistic accuracy, and (5) there is insufficient evidence to reach clear conclusions about the role that moderating variables have on the impact of PTP, but the results suggest that collaborative (as opposed to individual planning) can lead to increased accuracy and that PTP tends to lead to more complex language when the writing task is a complex one. The article concludes with a set of principles to ensure better quality research and three general proposals for the kind of future research needed.

Properties of Self-Compacting Geopolymer Concrete

2014 ◽  
Vol 803 ◽  
pp. 99-109 ◽  
Author(s):  
Muhd Fadhil Nuruddin ◽  
Fareed Ahmed Memon
Keyword(s):  
Construction Industry ◽  
Fossil Fuels ◽  
Negative Impact ◽  
Raw Materials ◽  
Construction Material ◽  
Construction Materials ◽  
Cement Production ◽  
Cement Manufacture ◽  
The Moment ◽  
The Impact

Concrete has been used in the construction industry since long times. It is probably the most widely used construction material in the world, largely due to the abundance of the raw materials for cement manufacture, low relative cost and the versatility and adaptability of concrete in forming various structural shapes. Massive production of concrete and the associated substantial manufacture of cement have however been observed to have a very negative impact. One of the biggest issues of growing concern at the moment faced by concrete industries is the impact of cement production on the environment. The production of cement not only depletes significant amount of natural resources, but also liberates a considerable amount of carbon dioxide (CO2) and other greenhouse gases into the atmosphere as a result of decarbonation of limestone and the combustion of fossil fuels. In addition, cement is among the most energy intensive construction materials, after aluminium and steel [1].

scholarly journals The Development of Recycling in the Construction Industry and Its Effect on the Economy

2015 ◽  
Author(s):  
Fatih Kürşat Fırat ◽  
Fahri Akbaş
Keyword(s):  
Energy Consumption ◽  
Natural Resources ◽  
Construction Industry ◽  
Global Climate ◽  
Construction Materials ◽  
Waste Material ◽  
Raw Material ◽  
World Population ◽  
Production Operation ◽  
The Impact

The growth in world population, global climate change, consumption habits of people, and the excessive use of prime materials, causes natural resources to decline rapidly. We waste more energy during the process of production, operation and transportation of materials than ever. Perhaps one of the most important challenges that our generation faces is to create an economy that prevents waste. Considering limited resources, countries are searching for new methods of recycling and reusing waste material. Recycling is one primary way to reduce the consumption of natural resources. Waste material can go through a reproduction process with various physical and chemical transformation methods. The recycling of petrochemicals used in the automotive industry, electrical appliances, steel and cement industries, and the improvement of the transportation sector can reduce energy consumption and raw material significantly. Investment in recycling facilities can maximize profits by turning waste back into the economy. In Turkey, the improvements on the subject of recycling of materials such as plastics and paper are observed. However, we almost see no recycling in the construction industry, except iron and steel sector. Demolition materials in other countries are included in the reproduction processes through recycling. Thus both the benefits of reducing energy consumption and carbon emissions are at a minimum. Therefore, this study focuses on the recycling in the Turkey construction industry. The research also investigates the impact of recycling of construction materials to the economy and the environment based on the data and knowledge obtained from some European countries.

scholarly journals Agriculture and natural resources business owners economic and communication concerns early in the COVID-19 pandemic

2020 ◽  
Vol 1 (3) ◽  
pp. 95-110
Author(s):  
Lauri Baker ◽  
Michaela Kandzer ◽  
Shelli Rampold ◽  
Christy Chiarelli ◽  
Hikaru Peterson ◽  
...  
Keyword(s):  
Natural Resources ◽  
Economic Impacts ◽  
Recovery Process ◽  
Business Owners ◽  
Opinion Leadership ◽  
Future Research ◽  
Health Crisis ◽  
Novel Coronavirus ◽  
The Impact ◽  
The U.S

The purpose of this study was to describe agriculture and natural resource (ANR) leader business owners’ initial concerns and feelings about the impacts of the 2019 novel coronavirus (COVID-19) pandemic. Based on the theories of opinion leadership and bounded rationality, researchers analyzed survey findings to identify and describe ANR business owners’ 1) business and economic concerns associated with COVID-19, 2) communication concerns associated with COVID-19, and 3) any other concerns or impacts experienced due to COVID-19. Findings indicated that the majority of respondents were concerned about their bottom lines, employees missing work, and their abilities to provide employees a safe workplace. Additionally, respondents were concerned about the impact of COVID-19 on the U.S. economy. Regarding communication concerns, respondents were concerned about others sharing inaccurate COVID-19 information. When asked about additional concerns related to COVID-19, many respondents noted their concerns about economic impacts, personal and business finances, and canceled events causing them to become unable to interact with customers. Overall, the biggest concerns were related to economic impacts and misinformation. Recommendations for future research are to continue to assess this population as the pandemic continues, and again when the health crisis ends to understand the recovery process for ANR leader business owners.

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