https://repositori.mypolycc.edu.my/jspui/handle/123456789/6660 Thu, 02 Jul 2026 11:06:26 GMT 2026-07-02T11:06:26Z https://repositori.mypolycc.edu.my/jspui/handle/123456789/10067 Title: ENHANCING CONSTRUCTION PROJECT MANAGEMENT: INTEGRATING PMBOK AND ISO 21500 IN BANDA ACEH Authors: Hafnidar A. Rani; Jurisman Amin; T. Mirjan Abstract: This research investigates the integration of PMBOK (Project Management Body of Knowledge) principles and ISO 21500 standards in construction project management, specifically within the Post-Disaster Building Construction Project for the District Court Office in Banda Aceh. The study addresses two main issues: the application of PMBOK and ISO 21500-based construction project management and identifying key indicators that prioritize effective implementation. Using a saturated sampling technique with 18 respondents, 10 variables, and 45 indicators, this study aims to map the project management process and prioritize indicators aligned with these standards. Descriptive analysis shows the project has implemented PMBOK and ISO 21500 principles with varying success across indicators. Processes like project diagram creation, planning, closure, stakeholder identification, cost estimation, and quality planning achieve the highest averages (around 4.39), indicating effective implementation. Priority indicators include project chart creation, project management planning, project closure, stakeholder identification, cost estimation, and quality planning. However, areas such as Work Breakdown Structure (WBS), scheduling, risk analysis, supplier selection, and administrative closure received the lowest average values (3.50). This research highlights effective implementation of PMBOK and ISO 21500 standards, identifying priority areas for improving construction project management practices in similar post-disaster contexts and emphasizing areas requiring further development. Thu, 01 Jan 2026 00:00:00 GMT https://repositori.mypolycc.edu.my/jspui/handle/123456789/10067 2026-01-01T00:00:00Z https://repositori.mypolycc.edu.my/jspui/handle/123456789/10066 Title: GEOTECHNICAL CHARACTERIZATION AND SUITABILITY OF WEAK SOILS FOR SUSTAINABLE STABILIZATION IN RUKPOKWU, RIVERS STATE, NIGERIA Authors: George, Smile Daniel; Nurudeen Ahmed Onomhoale; Nwofo, Temple C.; Ikebude, Chiedozie Francis; Olali, Finjite Dorathy Abstract: Weak, moisture-sensitive soils in deltaic environments present major constraints to safe and durable infrastructure. This study provides a comprehensive geotechnical characterization of natural (untreated) soil from Rukpokwu, Obio/Akpor LGA, Rivers State, Nigeria, to assess its engineering suitability and establish a baseline for potential improvement. Representative samples were collected from the subgrade horizon (≈1.0 m) and tested in the laboratory according to BS 1377 procedures for Natural Moisture Content (NMC), Specific Gravity (Gs), Particle Size Distribution (PSD), Atterberg Limits (Liquid Limit [LL], Plastic Limit [PL], and Plasticity Index [PI]), and Standard Proctor Compaction to determine Maximum Dry Density (MDD) and Optimum Moisture Content (OMC), as well as California Bearing Ratio (CBR) and Unconfined Compressive Strength (UCS). Results show a mean natural moisture content of ~18.0%, specific gravity between 2.63 and 2.70, and a predominantly fine-grained matrix dominated by silt and clay. Index tests returned LL ≈ 38%, PL ≈ 17%, and PI ≈ 21%, classifying the soil as a highly plastic clay with significant shrink–swell potential. Compaction tests yielded an MDD of approximately 1.72 g/cm³ at an OMC of about 14.2%. Strength indicators were poor, with a CBR of roughly 3.99% and a UCS of about 433 kPa. Collectively, these findings demonstrate that the natural soil is moisture-sensitive, highly plastic, poorly graded, and of low bearing capacity, unsuitable for direct use as pavement subgrade, shallow foundation support, embankment fill, or backfill without treatment. The study concludes that stabilization is necessary and highlights the potential of sustainable pozzolanic additives from agricultural waste as viable options for improving the soil’s engineering performance. Tue, 01 Jul 2025 00:00:00 GMT https://repositori.mypolycc.edu.my/jspui/handle/123456789/10066 2025-07-01T00:00:00Z https://repositori.mypolycc.edu.my/jspui/handle/123456789/10065 Title: A CRITICAL REVIEW ON EFFECTS OF REPLACEMENT OF NATURAL SAND WITH MANUFACTURED SAND ON STRENGTH PARAMETERS OF CONCRETE Authors: A. M. Shende; J. N. Tandulkar; S. S. Bokde; K. D. Tikle; S. S. Rathod; N. R. Kumbhalkar; J. K. Masurkar; A. A. Randive Abstract: The global construction industry is currently grappling with a critical shortage of natural river sand, a crisis compounded by the severe environmental degradation resulting from unregulated riverbed mining. As the industry seeks sustainable alternatives, Manufactured Sand (M-sand) has emerged as a frontrunner. This paper provides a comprehensive evaluation of M-sand produced through the systematic crushing of hard stone as a functional replacement for fine aggregates in concrete. Unlike the rounded grains of river sand, the angular geometry and micro-surface roughness of M-sand facilitate a superior mechanical interlocking within the cementitious matrix, potentially enhancing both durability and structural integrity. Through a comparative analysis of M20 and M22 concrete grades, this study investigates the performance shifts associated with incremental replacement levels (25%, 50%, 75%, and 100%). The synthesised data suggests that a 50% substitution ratio represents a "sweet spot," consistently achieving optimal compressive strengths, specifically 19.2 N/mm² for M20 and 21.2 N/mm² for M22 mixes over a 28day curing period. Additionally, the study explores the synergistic effects of incorporating silica fume as a mineral admixture to further refine the concrete’s pore structure. The findings conclude that transitioning to Msand not only mitigates the ecological footprint of sand extraction but also offers a technically robust and economically viable solution for the future of sustainable infrastructure. Sun, 01 Mar 2026 00:00:00 GMT https://repositori.mypolycc.edu.my/jspui/handle/123456789/10065 2026-03-01T00:00:00Z https://repositori.mypolycc.edu.my/jspui/handle/123456789/10064 Title: INTEGRATED SEISMIC-HYDRAULIC PERFORMANCE ASSESSMENT OF A ZONED EMBANKMENT DAM APPLICATION TO THE MEMVE’ELE HYDROPOWER PROJECT (CAMEROON) Authors: Sengha, Gérard Ghislain; Ndy Von Kluge, Paul; Doumia, Bénoît Abstract: This study examines the coupled seismic-hydraulic response of the Memve’ele zoned embankment dam in Cameroon under multi-component seismic excitation. Conventional dam safety assessments often consider only translational ground motions and two-dimensional analyses, which may underestimate the influence of rotational and torsional seismic components on the response of large embankment dams. To address this limitation, an integrated numerical framework is developed that combines finite-element seepage, stability, and stress-strain analyses in GeoStudio with external computational routines implemented in MATLAB. The methodology enables pseudo-three-dimensional seismic loading by incorporating translational, rocking, and torsional motion components into multiple two-dimensional model slices. Seepage and transient hydraulic analyses are conducted to evaluate phreatic surface evolution, pore-water pressure distribution, and slope stability during reservoir operation. Dynamic response analysis is then performed to assess deformation patterns, stress redistribution, and safety factors under coupled hydraulic-seismic loading. Results indicate that the permeability and mechanical properties of the clay core strongly influence downstream seepage and stability conditions, while rotational seismic components significantly modify stress concentrations and displacement patterns within the dam body. The proposed semi-three-dimensional approach provides a practical tool for improving seismic safety assessment of zoned embankment dams. Sun, 01 Mar 2026 00:00:00 GMT https://repositori.mypolycc.edu.my/jspui/handle/123456789/10064 2026-03-01T00:00:00Z