Department of Building Technology

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    EVALUATION OF DIGITAL TOOLS IMPLEMENTATION IN CONSTRUCTION MANAGEMENT FOR PROJECT DELIVERY IN LAGOS STATE
    (Covenant University, Ota, 2026-07) HABU, Shadrack Alhamdu; Covenant University, Dissertation
    Construction industries around the world have benefited from digital tools, including Building Information Modeling (BIM), Artificial Intelligence (AI), Internet of Things (IoT) gadgets, cloud-based systems, mobile technologies, unmanned aerial vehicles (drones), and virtual or augmented reality. In Nigeria, particularly in Lagos State, there is low usage of these tools, resulting in delays, budget overruns, poor project outcomes, and health and safety issues. This study sought to investigate how digital tools have been implemented in construction management practice in Lagos State to help develop an implementation strategy that can guide future use of these tools. The methodology adopted was a quantitative survey design. Structured questionnaires were distributed to a stratified sample size of 250 professionals in construction management practice in Ikeja, Victoria Island, and Lekki, 219 of which returned valid responses, and analyzed using descriptive statistics, relative importance index, Pearson correlation, and regression analysis. There is some level of awareness, but not necessarily of consistent use of digital tools by professionals involved in construction management. Awareness of digital tools had a significant relationship with adoption (r = 0.380, p < 0.001), while adoption had a significant relationship with performance (R² = 0.148, p < 0.001). However, when the drivers and barriers identified by the study (twelve drivers and sixteen barriers) are collectively evaluated against adoption behavior, the collective effect is not significant (p = 0.352), although they are perceived as important factors by professionals. There is also an influence of digital tools on project performance in time, cost, quality, and safety aspects of the construction projects, as perceived by professionals. Based on the findings, the study recommends the ADAIP implementation strategy -Awareness, Decision, Adoption, Integration, and Performance as a sequential guide for professionals implementing digital tools in the construction industry in Lagos State. Keywords:
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    DEVELOPMENT OF COCOA POD HUSK ASH (CPHA) BASED CEMENT MATRIX FOR LOW-COST HOUSING
    (Covenant University, Ota, 2026-07) UZOMA, Chidera Clinton; Covenant University, Dissertation
    The persistent housing deficit in Nigeria, coupled with the escalating cost of Portland Cement (PC), necessitates the development of sustainable and cost-effective alternative binders. This study investigates the combined use of Cocoa Pod Husk Ash (CPHA) and Calcium Carbide Waste (CCW) as supplementary cementitious materials (SCMs) for low-cost housing, in comparison with established agro-waste SCMs such as Rice Husk Ash (RHA) and Palm Oil Fuel Ash (POFA). Laboratory analyses were conducted to evaluate the physicochemical and mechanical properties of CPHA and CCW in accordance with ASTM C618 standards. Results indicate that both materials satisfy key physical requirements, with fineness of 10% passing 45 μm and normal consistency values of 33.3% (CPHA) and 34% (CCW). Blended CPHA–CCW mortars exhibited decreasing workability with increasing CCW content, while setting times increased progressively due to higher lime concentration. Among the mix ratios investigated (60:40 to 35:65), the 55:45 CPHA–CCW blend demonstrated the most balanced performance, exhibiting adequate workability (65 mm slump flow), moderate setting time (135 min initial; 273 min final), and superior compressive strength development over curing periods. Comparatively, this optimal ratio performs competitively with conventional SCM systems at 20–30% replacement levels, highlighting the synergistic interaction between silica-rich CPHA and calcium-rich CCW. However, the relatively low silica content of CPHA suggests the need for improved calcination to enhance reactivity. Overall, the study establishes that a 55:45 CPHA–CCW blend is the most effective proportion, offering a viable, eco-friendly alternative to PC while supporting sustainable construction and circular economy practices in Nigeria.