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The purpose of this paper is to check the feasibility of using biomaterial such as of Phragmites-Australis (PA) in cement paste to achieve sustainable building materials.

In this study, cement pastes were prepared by adding locally produced PA fibers in four different volumes: 0%, 0.5%, 1% and 2% for a duration of 180 days. Bottles and prisms were subjected to chemical shrinkage (CS), drying shrinkage (DS), autogenous shrinkage (AS) and expansion tests. Besides, prism specimens were tested for flexural strength and compressive strength. Furthermore, a mathematical model was proposed to determine the variation length change as function of time.

The experimental findings showed that the mechanical properties of cement paste were significantly improved by the addition of 1% PA fiber compared to other PA mixes. The effect of increasing the % of PA fibers reduces the CS, AS, DS and expansion of cement paste. For example, the addition of 2% PA fibers reduces the CS, expansion, AS and DS at 180 days by 36%, 20%, 13% and 10%, respectively compared to the control mix. The proposed nonlinear model fit to the experimental data is appropriate with R2 values above 0.92. There seems to be a strong positive linear correlation between CS and AS/DS with R2 above 0.95. However, there exists a negative linear correlation between CS and expansion.

The PA used in this study was obtained from one specific location. This can exhibit a limitation as soil type may affect PA properties. Also, one method was used to treat the PA fibers.

The utilization of PA fibers in paste may well reduce the formation of cracks and limit its propagation, thus using a biomaterial such as PA in cementitious systems can be an environmentally friendly option as it will make good use of the waste generated and enhance local employment, thereby contributing toward sustainable development.

To the authors best knowledge, there is hardly any research on the effect of PA on the volume stability of cement paste. Therefore, the research outputs are considered to be original.

The purpose of this paper is to examine the use of phragmites australis ash (PAA) in cementitious systems to achieve sustainable construction.

In this paper, the properties of mortar containing PAA as partial cement replacement are determined. The PAA is produced through slow burning in a closed system to minimize the CO₂ emission. A total of four mortar mixes are prepared with PAA replacement levels ranging from 0% to 30% by weight. The water to binder and the proportions of binder to sand are 0.55 and 1:3 by weight, respectively. The properties tested are density, compressive strength, flexural strength, ultrasonic pulse velocity, water absorption by total immersion and capillary rise. Testing is conducted at 1, 7, 28 and 90 days.

While there is a decrease in strength as the amount of PAA increases, there is strong indication of pozzolanic reaction in the presence of PAA. This is in agreement with the results reported by Salvo et al. (2015), where they found noticeable pozzolanic activities in the presence of straw ash, which is rich in SiO₂ and relatively high K₂O content. At 90 days of curing, there is a decrease of 5% in compressive strength at 10% PAA replacement. However, at 20% and 30% replacement, the reduction in compressive strength is 23% and 32%, respectively. The trend in flexural strength and ultrasonic pulse velocity is similar to that in compressive strength. The water absorption by total immersion and capillary rise tends to increase with increasing amounts of PAA in the mix. There seems to be a linear relationship between water absorption and compressive strength at each curing age.

The Phragmites australis plant used in this investigation is obtained from one location and this present a limitation as the type of soil may change the properties. Also one method of slow burning is used. Different burning methods may alter the composition of the PAA.

This outcome of this research will contribute towards sustainable development as it will make use of the waste generated, reduce the amount of energy-intensive cement used in construction and help generate local employment in the area where the Phragmites australis plant grows.

To the best knowledge of the authors, the ash from the Phragmites australis plant has not been used in cementitious system and this research can be considered original as it examines the properties of mortar containing PAA. Also, the process of burning in a closed system using this material.

This paper aims to investigate the bond strength of metakaolin-based geopolymer mortar with cement mortar.

The mortar-mortar bond strength is assessed by slant shear and split tensile tests; pure shear strength is evaluated by Mohr’s criterion for result validation. Metakaolin-based geopolymer mortar is cast over the cured cement mortar specimen with two levels of surface roughness: smooth or grooved interface. The influence of the alkaline solution to metakaolin ratio on geopolymer bond strength is studied. Compressive strength, ultrasonic pulse velocity, permeability and flow table tests are also performed.

The paper’s findings are highlighted as follows: (1) strong mortar-mortar bond properties achieved for geopolymer mortar in all tests and conditions and validated by Mohr’s criterion and pure shear, (2) a lower alkaline solution to metakaolin ratio achieves higher bond strength to Portland cement mortar and (3) geopolymer mortar has higher compressive strength and ultrasonic pulse velocity than cement mortar at all curing ages; additionally, it is more flowable and less permeable.

The full replacement of Portland cement with metakaolin, a more sustainable cementitious material, will contribute to the decarbonization of the construction industry.

Limited research has been carried out on the bond strength of metakaolin-based geopolymer mortar to Portland cement mortar. Also, computing the pure shear using Mohr’s circle criterion of metakaolin-based geopolymer to validate the results can be considered original.

The Islamic world spans many different languages with different language structures. This paper aims to explore one way in which language structure affects consumer response to the marketing of cobrands.

Two between subject experiments were conducted using samples of participants from Saudi Arabia and the USA. The first manipulated partner brand category similarity and brand name order, along with the structure of the language used to communicate with the market. The data for this study includes Arabic speakers in Saudi Arabia as well as English speakers in the USA. The second study explores how targeting a population fluent in multiple languages of varied structure nullifies the findings from the first study and uses Latino participants in the USA.

This study finds that when brands come from similar product categories, name order did not affect cobrand evaluations, but it did when the brands come from dissimilar product categories. Here, evaluations of the cobrand are enhanced when the invited brand is in the position that adjectives occupy in the participant’s language. The authors also find that being proficient in two languages, each with a different default order for adjectives and nouns, quashes the effect of name order otherwise seen when brands from dissimilar product categories engage in cobranding.

By examining the impact of language structure on the effects of cobrand evaluation and conducting studies among participants with differing dominant languages, this research can rule out simple primacy or recency effects.

This study aims to provide a bibliometric analysis of 1,104 journal articles to explore the multifaceted research field of Islamic finance and banking, explicitly emphasising the impact of the COVID-19 pandemic.

Insights into the evolving trends and dynamics within the academic discourse are presented.

The research highlights different patterns and collaborative networks through co-authorship, co-occurrence and thematic map analyses. Prior to the pandemic, research focused primarily on customer satisfaction and compliance with Shariah principles. However, the pandemic heralded an increased discourse on sustainability, fintech and the financial crisis.

This review describes the prevailing academic terrain and identifies potential avenues for future research, particularly those that examine the socio-economic impact of the pandemic within the context of Islamic finance and banking.

Prominent author such as M. Kabir Hassan, leading institution such as the International Islamic University Malaysia and esteemed journal such as the International Journal of Islamic and Middle Eastern Finance and Management have been instrumental in shaping academic discussions and creating synergies in research. Moreover, Malaysia’s strong commitment to spatial research, evidenced by its robust global collaborations, underscores its pioneering role in the academic world of Islamic finance and banking.

In the modern financial landscape, the integration of sustainability and ESG has emerged as an imperative part for managers. Amid growing pressure and demand from multiple stakeholders, managers are confronted with diverse challenges in the integration of sustainability and ESG into the financial system. This chapter scrutinizes the evolving financial system due to sustainability and ESG, elucidating the challenges it presents for managers. Before discussing the challenges, authors delve into related theories namely stakeholder theory and legitimacy theory, followed by a conceptual review and how researchers measure sustainability and ESG. This provides an overview of current research findings and directions to establish a common understanding of the topic discussed. The challenges faced by managers were discussed based on four salient areas. It includes the business case for sustainability, ESG metrics and reporting standards, sustainable investment criteria and stakeholder engagement for sustainability. At the end of this chapter, actionable recommendations were provided to the managers to navigate the challenges faced in the modern financial landscape. Authors recommended high quality audit, disclosure of accurate and consistent information and adoption of a comprehensive ESG matrix that integrates paramount business cases for the company to delineate the challenges faced by them. It further discusses additional techniques and tools that managers can incorporate to manage sustainability and ESG integration effectively.

The purpose of this study was to investigate the connection between green human resource management (GHRM) and corporate social responsibility (CSR). In addition, this study also investigates how the impact of GHRM varies depending on the extent of transformational leadership.

Adopting a quantitative approach, the sample consists of 376 employees who hold leadership positions in the academic body and those who work in human resources units at universities who won the Web Metric Award.

Results have shown that all GHRM practices were found to have a significant and positive effect on CSR. In addition, the findings revealed that transformational leadership positively moderates the relationship between GHRM and CSR.

The findings of this study contribute to the existing body of knowledge by providing empirical evidence of the positive relationship between GHRM practices, transformational leadership and CSR performance. In addition, the study highlights the moderating influence of transformational leadership on the relationship between GHRM and CSR, suggesting that transformational leadership can increase the efficacy of GHRM practices in promoting CSR outcomes.

This study aims to explore the impact of capital structure (CS), including total debts, short-term debt, long-term debt and total shareholder equity, on environmental, social and governance (ESG) performance in the context of Jordan.

To achieve the study’s objectives, the authors used the content analysis approach and the longitudinal data generated from the annual reports of 51 industrial companies listed on the Amman Stock Exchange for the period 2012–2020.

The findings show that debt financing enhances ESG performance in all dimensions, while financing by equity did not affect ESG. Consequently, Jordanian companies’ managers are trying to reduce agency costs by investing in ESG activities. In addition, companies are focusing on debt financing instead of equity to achieve their financial as well as nonfinancial goals. This is because the opportunism of new shareholders will likely lead to a focus on maximizing their value at the expense of the broader group of stakeholders, and this will adversely affect companies’ ESG performance. Therefore, debt financing limits shareholder control.

To the best of the authors’ knowledge, this is the first examination of the impact of CS financing choices on ESG performance. Thus, this study has important implications for the decisions of executives, policymakers, shareholders and lenders, as it enables them to better understand the linkage between CS and ESG.

The purpose of this paper was to examine the nexus between conditional exchange rate volatility and economic growth in BRICS countries. Further, the dynamic causation between economic growth and exchange rate volatility is also examined.

We employed three techniques, namely, dynamic panel models, static panel models and Dumitrescu and Hurlin (DH) panel causality test to examine the economic growth–conditional exchange rate volatility nexus in BRICS countries.

The overall results showed that conditional exchange rate volatility has a negative and significant effect on economic growth. Interestingly, the results showed that whenever the exchange rate volatility exceeds the 0–1.54 range, the economic growth of BRICS is reduced, on average, by 5%. Further, the results of the causality test reconciled with that of ARDL wherein unidirectional causality from exchange rate volatility, exports, labour force and gross capital formation to economic growth was found.

The urgent recommendation is to develop and align fiscal, monetary, trade and exchange rate policies, either through creating a common currency region or through coordinated measures to offset volatility and trade risks in the long run. Further, to offset the impact of excessive exchange rate changes, BRICS economies can set up currency hedging systems, implement temporary capital controls during periods of extreme volatility or create currency swap agreements with other nations or regions. Last, but not least, investment and labour policies that are coherent and well-coordinated can support market stabilisation, promote investment and increase worker productivity and job prospects.

Researchers hold contrasting views regarding the effect of exchange rate volatility on economic growth. Some researchers claim that exchange rate volatility reduces growth, and several shreds of empirical evidence claim that lower exchange rate volatility is linked with an increase in economic growth, at least in the short run. However, the challenge lies in establishing the optimal range beyond which exchange rate volatility becomes detrimental to economic growth. The present study contributes to this aspect by seeking to identify the optimal spectrum beyond which excessive shifts in exchange rate volatility negatively affect economic growth, or endeavors to define the acceptable spectrum within which these fluctuations actually boost growth. To the best of our knowledge, this study is the first to analyse the given research area. The present study used a dummy variable technique to capture the impact of permissible exchange rate band on the economic growth.

The energy sector is one of the most important sectors with an impact on the environment, and therefore, sustainable performance in this sector is considered a sensitive issue for sustainability. It is, therefore, necessary to know how to address stakeholders’ interest in sustainability through governance mechanisms. The purpose of this study is to look into the role of corporate governance (CG) on sustainable performance disclosure (SPD) in the energy sector.

This study uses panel data covering the period 2019–2023 among 12 companies in the energy sector in Jordan. Fixed-effect regression models were estimated for board size, board independence, chief executive officer (CEO) duality, board diligence, board gender diversity, sustainability committee existence and sustainability disclosure. The data analysis tool of choice was a multiple regression approach because it was deemed appropriate. The disclosure index was created using global reporting initiative standards and provides the number and quality of disclosures on key sustainability indicators.

The study found a significant and positive relationship between board size, percentage of independent directors, board audit, board gender diversity, existence of sustainability committee and level of SPD. On the other hand, the study establishes that CEO duality has an inverse relationship with SPD.

The findings of this study have significant implications for managers and corporate decision-makers in the energy sector. The findings affirm that the improved design of CG motivations and realizations conducive to robust measures of SPD necessitates effective CG.

The value of this applied study stems from the importance of SPD for various categories of stakeholders, and conducting such an applied study is crucial to improving the existing realization of the factors that can have a significant impact on the level of SPD in Jordanian energy sector companies. The results of this paper may be of procedural value to regulatory authorities and decision-makers.