http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/47 Building Wed, 17 Jun 2026 01:20:17 GMT 2026-06-17T01:20:17Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30857 Title: Properties of Pulverized Burnt Clay and Calcium Oxide Blended Concrete Authors: Akanmu, W. P.; Ogunbode, Ezekiel Babatunde; Hassan, I. O.; Agbo, A. E. Abstract: This paper reports the results of investigation to assess the sustainability of pulverized burnt cement (PBC) and Calcium Oxide (CaO) for blended cement production. Tests were conducted on cement, where Pulverized Burnt Clay (PBC) was replaced by CaO within the range of 10 to 40%. The physical and chemical properties of PBC and CaO were critically reviewed to evaluate the possible influence on cement properties. The investigation included testing on both fresh and hardened states of cement paste. The standard tests conducted on different PBC / Cao mixtures provided encouraging results, comparable to those for Ordinary Portland Cement (OPC), and showed good potential of manufacturing blended pulverized burnt clay and (CaO) cement with higher setting time and low heat of hydration using up to 30% replacement. Description: JOURNAL ARTICLE Tue, 12 Jun 2012 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30857 2012-06-12T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30856 Title: An Assessment of the Performance of Framework Contract Projects. Authors: Ayegba, Calistus; Agbo, Edwin, A; Root, David Abstract: There is increasing adoption of framework contracts (FC) for construction project delivery in South Africa, but it is not yet clear what the performance of the approach is in accomplishing client's expected outcomes of projects being delivered on time, within budget and to required quality and satisfaction. In this study, the performance of FC and the variables that influences the performance is investigated empirically. A qualitative research methodology was adopted for the study. Data were collected via semi-structured interviews with key informants of eight purposively selected client organizations employing FC in South Africa. From the findings, FC is indicated to have performed spectacularly in dealing with unnecessary cost overruns, time delays, and improvement in the quality of delivery. However, it was reported that the approach work best for repetitive works and when a client has the intention of a long-term programme of work. In which case, clients also have to take care to avoid complacency from the contractors. The results provide substantial evidence that FC can perform better than the conventional approaches of short-term relationships and contracts. The result of the study provides insights that can encourage construction stakeholders to appreciate and adopt FC as a viable alternative approach for construction project delivery. Description: JOURNAL ARTICLE Mon, 20 Jul 2020 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30856 2020-07-20T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30853 Title: Assessment of Craftsmen Turnover in the Construction Industry Authors: Ayegba, Calistus; Agbo, Edwin, A Abstract: The paper gives an insight on construction craftsmen turnover in the construction industry. In the study, the main factors responsible for craftsmen turnover, the effect of craftsmen turnover on contractors’ performance and suggestions that will tackle the problem of turnover were considered. A total of 50 questionnaires were distributed and 46 of the administered questionnaire was responded to and returned. The data obtained were analysed with statistical tools such as standard deviation, mean and variance. Also pie charts, bar chart, column chart and line chart were used in presenting results. The four-point Likert scale was used to rank factors in order of their importance based on the relative Important Index (R.I.I) of the factors. The result shows that poor payment and benefits, poor treatment of workers and absence of advancement and promotion opportunities are the main cause of turnover while tribal differences and religious differences as regard cultural diversity are the main factors responsible for turnover. The study observed that craftsmen turnover has both direct cost and indirect cost effect on the performance of construction companies. Cost of hiring new employees, training of new workers and replacing old workers was shown to be the main direct cost effect on the performance of a contractor while indirect cost such as Project overtime, additional workload on remaining workers and reduction of project performance are the main effect of indirect cost. The study also shows that the problem of craftsmen turnover can be reduced by paying competitive compensation and benefit packages, fair treatment of workers and reward for dedicated workers are some of the best ways of reducing turnover while fairness, equal opportunity and respect for all and conducive workplace and cultural relation balance are ways of reducing turnover resulting from the cultural diversity of workers. The study also identified that motivation of craftsmen by increasing wages and salaries, promoting committed workers and training of craftsmen can be used to reduce the effect of craftsmen turnover. Based on the findings in the work, appropriate recommendations were being made to help tackle the challenges of craftsmen turnover in the construction industry. Description: JOURNAL ARTICLE Wed, 01 Jan 2014 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30853 2014-01-01T00:00:00Z http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30851 Title: Stakeholders Perspective of the Impact of Risk Factors on Cost, Time and Quality of Building Construction Projects Authors: Ijigah, Augustine Edoka; Agbo, Edwin, A; Ayegba, Calistus Abstract: The paper considers the stakeholders perspective of the impact of risk factors on cost, time and quality of building construction projects. In the study, stakeholders perceptive of the impact of risk factors on cost of building construction projects as well as stakeholders perceptive of the impact of risk factors on time duration of building construction projects and stakeholders perceptive of the impact of risk factors on quality of building construction projects were assessed. Data for the study was obtained Data for the study was collected via a structured questionnaire administered to respondents in Abuja, Port-Harcourt, Kaduna and Lagos state. The questionnaires are designed to assess the views of respondents on the impact of risk factors on cost, time and quality of building construction projects. Respondents were asked to rate their perceptions regarding the severity of risk factors on a five point Likert ordinal scale where 5 = Very Severe, 4 = Severe, 3 = Neutral, 2 = Less Severe and 1 = Not Severe. Data obtained from the survey were analysed using Relative Severity Index (RII) method. The Relative Severity index (RII) was calculated using the formula: RII = ΣnW÷N (for 0≤RII≤5) Where W= the weight assigned to each strategy by the respondents, n = number of respondents, N = the total number of respondents. The limits of definition of RII were: 0≤ RII≤1 = Not Severe, 1≤RII≤2 = Less Severe, 2≤RII≤3 = Neutral, 3≤RII≤4 = Severe, 4≤RII≤5 = Very Severe. The mean relative severity index was then calculated and a rank ordering of these variables were then assigned based on the calculated relative index (RII). Findings revealed that 6% and 91% of the impact of risk factors on cost of building construction projects were perceived to be very severe and severe respectively, 3% of these factors have neutral impact while none of the factors were seen to be of less severity or not having severe impact on the cost of building construction projects. Furthermore, on stakeholders perceptive of impact of risk factors on time duration of building construction projects, improper planning and budgeting, inadequate forecast about market demand, increase of material cost, increase in labour cost and improper project organization structure were giving the overall top ranking with relative index of 4.290, 4.142, 4.110, 4.108 and 4.002 respectively while on stakeholders perceptive of impact of risk factors on quality of building construction projects corruption/bribery, competition from other companies in form of employing lowest bid to get the contract, poor quality of procured materials, design changes and shortage of skillful workers were ranked overall as the top 34 risk factors identified from literature review. Description: JOURNAL ARTICLE Wed, 01 Jan 2014 00:00:00 GMT http://irepo.futminna.edu.ng:8080/jspui/handle/123456789/30851 2014-01-01T00:00:00Z