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The purpose of this study is to investigate the management of intragroup conflicts occurring in project design teams during pre-contract stages that affect the project deliverables of construction projects implemented in Sri Lanka.

A qualitative approach with a case study research strategy was used in the study. The required empirical data were collected by conducting expert interviews and reviewing the documents used in four selected projects implemented in Sri Lanka. All the projects used traditional separated procurement systems and had re-measurement contracts. Manual content analysis was used to analyze the collected data.

The study findings revealed the different types of intragroup conflicts that arise during the pre-contract stages of projects within project design teams of construction projects implemented in Sri Lanka and the causes and effects of those conflicts on project deliverables. The study recommends proactive strategies that can be adopted to manage those conflicts.

A dearth of literature on the association between the intragroup conflicts that arise during the design stages of construction projects and project deliverables exists. This study bridged this research gap. It is novel because it reveals the impact of intragroup conflicts that occur during the pre-contract stages of construction projects on project deliverables and identifies several proactive strategies that will assist in managing those intragroup conflicts.

Dam industry projects have significant economic, social and environmental impacts. However, very little has been carried out to improve their lifecycle performance. The purpose of this study is to identify success criteria applicable to different stages of such projects.

This study adopted a quantitative research design where the potential success criteria for dam engineering projects were evaluated. The applicable success criteria were determined for the four phases of project lifecycle by three rounds of Delphi technique with the participation of experts from dams industry in Australia.

The findings of this research suggest that project success is a multidimensional notion and varies over lifecycle of projects. This study on project success criteria shows that certain criteria can be applied to measure success in different phases over lifecycle of Australian dam industry projects.

The results of this research present the first exclusive quantitative assessment of success criteria for dams industry. The success criteria presented in this study enable project practitioners to measure success at various stages of dam industry projects. This can serve as a tool to put more management efforts into achieving success on those criteria.

The use of recycled aggregates (RA) has been explored to lead to a more sustainable future. The paper investigates on a sustainable concrete mix incorporating steel fibres (SF) and RA to provide an alternative to traditional natural aggregate concrete for structural applications. This paper aims to explore the feasibility of combining RA and SF in structural applications in terms of strength, cost and industry perspectives.

A mixed research approach is established with two phases. Phase 1 aims to identify an optimum material combination that satisfies the structural strength requirements and to identify the costs in its optimum combination. Phase 2 involves qualitative interviews with key industry parties to explore their perspective and identify various enablers and barriers for this material.

The optimum combination of 30 per cent RA replacement and 0.3 SF volume content has been identified through laboratory testing. It was noted that there would be a direct additional cost because of SF addition. However, when other benefits such as reduction in transportation costs and landfill dumping fees were considered, an overall cost saving could be achieved. Consequently, the key industry practitioners’ perspectives for this material have been gathered through qualitative interviews. Several enablers and barriers were identified through these interviews.

Even though, there are various research attempts on improving RA for structural purpose by adding different additives, a holistic study that incorporate cost effects and the industry perspectives was lacking and is addressed in this current study. In particular, industry perspectives lead to refocus research directions and get closer to the realisation of a sustainable construction industry.

The current research environment lacks a thorough examination of project success in specific domains, particularly in the context of dam project performance. Although there is a significant amount of study and a wide range of project management subjects, there is a clear absence of empirical research on dams. The purpose of this study is to fill in the knowledge gap on how to improve the performance of dam construction projects by focusing on the planning phase.

The study utilized a survey to gather the perspectives of professionals involved in dam projects regarding critical success factors and success criteria during the project planning phase. The collected data were then analyzed using exploratory factor analysis and structural equation modeling.

Four dimensions were identified for critical success factors: “project team,” “project readiness,” “engagement” and “long-term impact.” For project success criteria, “fulfill identified needs,” “functionality,” “quality performance” and “sustainability” were identified as having significance in measuring project success.

The article provides suggestions on how the dam engineering industry can include the identified project elements that are associated with project success. The study's significance stems from its substantial contribution to the limited literature on dam projects.

Blockchain as an emerging technology has increased the interests within various industries because of its salient features. A potential application of blockchain for embodied carbon (EC) estimating is being explored. Though there are several databases/tools to estimate EC, the accuracy of estimates prepared using them is affected due to several limitations. As a solution, a prototype blockchain-based EC (BEC) Estimator for distributed supply chain-based EC estimating has been introduced. The data models and user flow diagram that lead to development of a BEC Estimator are developed and evaluated in this study.

A case study approach assisted in developing the data models and user flow diagram for the BEC Estimator. A Delphi-based expert forum was used to evaluate and produce the refined data models and user flow diagram.

The BEC Estimator adopts a waterfall model, a system development lifecycle model, in developing the application. The phases, system analysis and system design, consisting the development of the data models and user flow diagram for the BEC Estimator are discussed.

Estimating EC accurately plays an important role in construction. The BEC Estimator uses the supply chain based embodied carbon estimating method to estimate EC accurately. This paper demonstrates the data models and user flow diagram developed for the BEC Estimator.

Project knowledge in the construction context needs to be disseminated within organisations to improve organisations’ performance and learning. Much of project knowledge is tacit, residing in social interactions in team relationships, and likely to be disseminated through social networks and processes within organisations. Social capital comprises both the network of strong personal relationships and the knowledge resources that may be mobilised through that network. The purpose of this paper is to explore the role of “networks” in disseminating project knowledge within the construction organisations in Sri Lanka.

The case study research method was used to investigate the research problem. The principal data collection technique used was semi-structured interviews. Content analysis, tables and cognitive maps were used to analyse data.

The findings revealed that strong network ties created with equal interaction of project and head office (H/O) individuals, frequent connectivity and much closer relationships enhance the flexibility of sharing project knowledge. The available invisible informal social networks within project and H/O individuals play a key role in disseminating project knowledge compared to business networks.

This research offers useful implications for construction organisation, in particular, to pay careful attention to nurture networks within their organisations in order to benefit from disseminating project knowledge widely within the organisations for effective re-use in future.

The problem of stress is increasingly gaining attention in the construction industry in recent years. This study is aimed at examining the causes, effects and possible alleviation of stress of project management (PM) practitioners so that their stress could be appropriately managed and reduced, which would contribute to improved mental health.

Primary data were collected in an online questionnaire survey via Qualtrics. Questions ranged from PM practitioners’ stressors, stress and performance under stress to stress alleviation tools and techniques. One hundred and five PM practitioners completed the questionnaire. Their responses were compiled and analyzed using descriptive statistics, correlation and regression.

The results confirmed that the identified stressors tended to increase stress of PM practitioners. All stressors tested in this study were found to have negative impact on the performance of PM practitioners. In particular, the burnout stressors were seen as the key stressors that influence the performance of PM practitioners and have a strong correlation with all the other stressors. It was also found that a number of tools and techniques can reduce the impact of stressors on PM practitioners.

This study has taken a specific focus on stress-related issues of PM practitioners in the construction industry due to their critical role in this project-dominated industry. Using the Job Demand-Resource theory, a holistic examination was not only conducted on stress and stressors but also on alleviation tools and techniques. This study has thus made significant contribution to the ongoing research aimed at finding solutions to mental health-related problems in the project-dominated construction industry, thereby achieving the United Nations’ social sustainability development goals.

Need of circular economy (ce) practices for net-zero and sustainability in construction sector is well known, and thus the need for information flow between current and potential users about materials and processes. Material passports (MPs) are the tool for this information flow. This study aims to examine the research trend about digitalisation and MPs in construction, explore the application of digital technologies (DTs) for information management required for MPs and provide further research directions.

Systematic search and review of literature was conducted adopting both qualitative and quantitative approach for analysis. Firstly, quantitative bibliometric analysis of 201 papers was conducted to get the context from ongoing research around the area and qualitative content and thematic analysis of selected 14 papers were then done to further explore the literature.

Bibliometric analysis suggested building information modelling (BIM) as the most widely studied topic for digitalisation and MPs, which has been studied together with other DTs, whereas blockchain is niched within supply chain and waste management. Qualitative review observed BIM as the most prevalent technology, providing platform for information generation and management for MPs, and most other DTs are applicable mostly for information generation. Artificial intelligence (AI) is useful for information generation, but more suiting for information analysis. Blockchain, on the other hand, is for decentralised and reliable information management.

This study has tried to explore the digitalisation for circularity in construction with focus on information management for MPs. As the ce in construction boils down to information flow and MPs, this study provides the idea about possible applications of DTs for MPs and suggests further research directions for development and use of MPs for ce in construction.

Carbon management in the construction industry plays a vital role as carbon emissions have a significant impact on the environment. Current emphasis on reducing operational carbon through passive designs, zero carbon buildings and so forth has resulted in losing focus on embodied carbon (EC) reduction. Though there are various databases and tools to estimate EC in construction, these estimates are lacking in accuracy and consistency. A Blockchain-based Embodied Carbon (BEC) Estimator was developed as a solution to accurately estimate EC using a supply chain value addition concept as a methodology.

This study focused on developing, testing and validating the blockchain-based prototype system identified as BEC Estimator. The system was developed using Hyperledger Fabric following a waterfall model. Case studies and an expert forum were used to test and validate BEC Estimator.

The system architecture, development process and the user interface of BEC Estimator are presented in this paper. The comparative evaluation with existing EC databases/tools and the expert forum validated the functioning of BEC Estimator and proved it to be an accurate, secure and trustworthy EC estimating system. SWOT (Strengths, Weaknesses, Opportunities, Threats) analysis identified the strengths and opportunities that will benefit the industry as well as the weaknesses and threats in the system that could be mitigated in future.

BEC Estimator accurately accounts for EC additions happening at each supply chain node for any product that gets incorporated in a building, thereby facilitating EC-related decision-making for all relevant stakeholders.