SLIIT International Conference On Engineering and Technology Vol. 03 [SICET] 2024

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    Driving Towards Sustainability During the Construction Phase of Roads in Sri Lanka by Mitigating CO2 Emission: A Systematic Literature Review Approach
    (SLIIT, Faculty of Engineering, 2024-10) Yaparathnea, I.H.G.Y.M. Udari; Guruge, K
    Climate change has become a pressing concern for humanity in the contemporary era. Scientists believe that the acceleration of global warming and climate change is directly linked to the rising concentration of greenhouse gases, particularly carbon dioxide (CO2). This has become a challenge for many developing countries. The construction industry is one of the sectors that significantly contributed to heightened carbon emissions into the environment. Road construction involves various activities and processes that release substantial amounts of CO2 into the atmosphere. Addressing these issues are crucial for mitigating the adverse effects of climate change and fostering sustainable development. The development of road infrastructure generates CO2 emissions across various stages. Notably, the construction stage is responsible for a significant portion of these emissions. Despite this, research efforts in Sri Lanka have primarily focused on reducing CO2 emissions in building construction projects, with limited attention to strategies specifically targeting road construction projects. The construction phase of road development has thus far been overlooked in terms of CO2 emission reduction strategies. Consequently, this study seeks to raise awareness among academics, professionals, and practitioners involved in road development projects about the factors influencing CO2 emissions during the road construction phase. The objectives of this study are to examine the factors affecting CO2 emissions during road construction development, identify the activities and processes contributing to CO2 emissions during the construction phase of road projects, explore existing sustainable strategies used in road construction to mitigate CO2 emissions, and assess their applicability to the Sri Lankan Road construction sector. A systematic literature review was conducted to achieve these objectives, selecting the fifty-six most relevant past research studies.
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    Potential Use of Partnering Procurement to Minimize Project Delays in Private-Sector Construction Projects
    (SLIIT, Faculty of Engineering, 2024-10) Hasaranga, K.K.A.P; Bandaraa, R.P.H.S.
    Project delivery delays remain a critical factor for project success in private-sector construction projects. This research explores the potential of Partnering Procurement as a strategic approach to minimize project delays. Partnering Procurement emphasizes collaboration, transparency, and long-term relationships among project stakeholders, including clients, contractors, and subcontractors. The study aims to investigate Partnering Procurement's effectiveness in minimizing project delays in private-sector Construction projects. The research methodology encompasses a comprehensive literature review and quantitative data collection method. The survey will be designed to collect quantitative data on the benefits and challenges associated with partnering procurement and its effectiveness in minimizing project delays. The anticipated outcome of this research reveals key contributors to delays in privatesector construction projects. Financial problems and payment delays from clients, drawing submission delays from consultants, and improper project management from contractors stand out as critical factors. This research includes a deeper understanding of the benefits and challenges of partnering procurement in private-sector construction projects. The findings will contribute to the body of knowledge in construction management and guide project stakeholders on the effective implementation of partnering procurement to minimize project delays. By minimizing project delays, private-sector construction projects can enhance their competitiveness, deliver projects within budget and schedule, and ultimately satisfy the needs of clients and stakeholders.
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    An Investigation on the Reliability of Pile Toe Defect Rectification Method used in Sri Lanka
    (SLIIT, Faculty of Engineering, 2024-10) Hapugaswatte, M; Thilakarathne, T.M.D; Thilakasiri, H.S
    The foundation is the vital part of any infrastructure as it will be the element that will eventually bear the superstructure load. In cases where the soil conditions are poor and structural loads are high, pile foundations are used more often. These piles should be defect free to not fail under the structural loads. So, the identification and rectification of such defects should be performed at early stages of construction. In this study, the reliability of the rectification method used for pile toe defect rectification in Sri Lanka (pile coring and grouting method) is studied. Raw data from 11 piles, found as defective through Cross-hole Sonic Logging (CSL) test, are analyzed. Six of these piles were retested after rectification using the same test while the remaining piles were retested using High Strain Dynamic (PDA) test. Out of the six piles, three showed an increase in the effective area, two still showed some defective areas and one was an incomplete test due to a blocked tube. Out of the five tested through PDA test, only one showed an acceptable β value, which is a parameter that represents the scale of the pile defects identified. Therefore, it was concluded that even though there is an overall improvement in the pile effective area, some defects could still exist within the pile that may require to be rectified and retested for integrity. It was also concluded that due to the comparatively lower accuracy of the PDA test, acceptance of a defective pile based only on this test without rectification is not acceptable. Future research suggestions were made to further refine the results of this research and to expand the scope to defects in other regions of the pile.
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    Data-Driven Bioclimatic Zoning in Sri Lanka: PCA and Clustering Analysis
    (SLIIT, Faculty of Engineering, 2024-10) Nadarajah, P.D; Singh, M.K; Mahapatra, S
    Driven by evolving lifestyles and the escalating demand for thermal comfort, Sri Lanka faces a critical absence of climate zone classifications necessary for constructing energy-efficient and climateresponsive buildings. This study addresses this gap by implementing bioclimatic zoning using a comprehensive 31-year weather dataset of 25 locations across the country. By applying Principal Component Analysis and Hierarchical Clustering to the 31-year weather data, Sri Lanka was classified into three distinct bioclimatic zones: Z1 (Hot and humid), Z2 (Cool and humid), and Z3 (Warm and humid). Bioclimatic potential analysis for each zone reveals natural ventilation as the most effective passive design strategy, demonstrating potential percentages of 64 ± 13%, 63 ± 10%, and 83 ± 4% in a year for Z1, Z2, and Z3, respectively. These findings underscore the crucial role of bioclimatic zoning in guiding the design of energy-efficient buildings in Sri Lanka. The approach contributes significantly to achieving national energy efficiency goals by leveraging climate-specific passive design strategies and reducing reliance on energy-intensive cooling systems. Moreover, the study not only classifies Sri Lanka into three bioclimatic zones but also emphasises the broader impact of implementing such strategies on sustainable construction practices. This research, therefore, stands at the intersection of bioclimatic zoning, sustainable building practices, and the evolving energy landscape.