Incessant Collapse of Buildings in Nigeria: The Possible Role of the Use of Inappropriate Cement Grade/Strength Class

Authors: Kazeem K. Adewole, Joy-Felicia O. Oladejo, Wasiu O. Ajagbe

Abstract:

The use of low quality concrete has been identified as one of the main causes of the incessant collapse of buildings in Nigeria. Emphasis has been on the use of poor quality aggregates, poor workmanship and the use of lean concrete mix with low cement quantity as the reasons for the low quality of concrete used for building construction in Nigeria. Surveys conducted revealed that in the construction of most privately owned buildings where concrete trial mixes and concrete compressive strength quality assurance tests are not conducted, concretes used for building constructions are produced using the 1:2:4 mix ratio irrespective of the cement grade/strength class. In this paper, the possible role of the use of inappropriate cement grade/strength class as a cause of the incessant collapse of building in Nigeria is investigated. Investigation revealed that the compressive strengths of concrete cubes produced with Portland-limestone cement grade 32.5 using 1:2:4 and 1:1.5:3 mix ratios are less than the 25MPa and 30MPa cube strengths generally recommended for building superstructures and foundations respectively. Conversely, the compressive strengths of concrete cubes produced with Portland-limestone cement grade 42.5 using 1:2:4 and 1:1.5:3 mix ratios exceed the 25MPa and 30MPa generally recommended for building superstructures and foundations respectively. Thus, it can be concluded that the use of inappropriate cement grade (Portland-limestone cement grade 32.5), particularly for the construction of building foundations is a potential cause of the incessant collapse of buildings in Nigeria. It is recommended that the Standards Organisation of Nigeria should embark on creating awareness for Nigerians, particularly, the home owners and the roadside craftsmen that Portland-limestone cement grade 32.5 should not be used for the construction of building load-carrying members, particularly, building foundations in order to reduce the incessant incidence of collapsed building.

Keywords: Cement grades, Concrete strength class, Collapsed building, Concrete mix ratio, Portland-limestone cement.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1337419

References:

[1] Tribune, 14 May, 2014. NEWS headline, "Building collapse, COREN proposes death penalty for perpetrators”, http://www.tribune.com.ng/ news/news-headlines/item/5177-building-collapse-coren-proposes-death-penalty-for-perpetrators-reps-express-worry, Assessed on 19/05/2014
[2] Consumer news Nigeria, "Building collapse in Nigeria, its causes and recommendations” http://consumernewsng.com/2012/09/30/building-collapse-in-nigeria-its-causes-and-recommendations, assessed on 15/05/2014.
[3] D. S. Matawal, G. N. Omange, and F. A. Akingbade, "Collapse of a 6-storey building at 11 Aderibigbe Street, Maryland, Lagos, Nigeria, NBRRI'S Comments”, Nigerian Building and Road Research Institute. http://nbrri.gov.ng/docs/BUILDING%20COLLAPSE-MARYLAND.pdf-, assessed on 18/05/2014.
[4] A. A. Taiwo and J. A. Afolami, "Incessant building collapse: A case of a hotel in Akure, Nigeria”, Journal of Building Appraisal, vol. 6, issue 3 / 4, pp. 241–248, 2011.
[5] S. A. Oloyede, C. B. Omoogun, O. A. Akinjare, "Tackling Causes of Frequent Building Collapse in Nigeria”, Journal of Sustainable Development, vol. 3, No. 3, pp 127-132, 2010.
[6] A. N. Amadi, C. J. Eze, C. O. Igwe, I. A. Okunlola, and N. O. Okoye, "Architect’s and Geologist’s View on the Causes of Building Failures in Nigeria”, Modern Applied Science; vol. 6, issue 6, pp 31-38, 2012.
[7] C. A. Ayedun, O. D. Durodola, O. A. Akinjare, "An Empirical Ascertainment of the Causes of Building Failure and Collapse in Nigeria”, Mediterranean Journal of Social Sciences vol. 3, issue 1, pp.313 – 322, 2012.
[8] L. M. Olanitori, "Causes of structural failures of a building: Case study of a building at Oba-Ile, Akure” Journal of Building Appraisal, vol. 6, issues 3 / 4, pp. 277–284, 2011.
[9] J. A. Tanko, F. A. Ilesanmi, and S. K. Balla, "Building Failure Causes in Nigeria and Mitigating Roles by Engineering Regulation and Monitoring” Engineering, vol. 5, pp. 184-190, 2013.
[10] O. A. Adenuga, "Professionals in the Built Environment and the Incidence of Building Collapse in Nigeria. Organisation, technology and management in construction”, An International Journal, vol. 4 issue 2, pp. 461-473, 2012.
[11] E. O. Ayodele, A. B. Ogunbode, I. E. Ariyo, and O. M. Alabi, "Corruption in the Construction Industry of Nigeria, Causes and Solutions”. Journal of Emerging Trends in Economics and Management Sciences (JETEMS), vol. 2 issue 3, pp. 156-159. 2011.
[12] R. E. Olagunju, S. C. Aremu, and J. Ogundele, "Incessant Collapse of Buildings in Nigeria: An Architect’s View”, Civil and Environmental Research, vol.3, issue 4, pp. 49-54. 2013.
[13] K. O. Olusola, T. S. Ojambati, and A. F. Lawal, "Technological and Non-Technological Factors Responsible for the Occurrence of Collapse Buildings in South – Western Nigeria” Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS), vol. 2, Issue 3, pp. 462-469, 2011.
[14] A. Everest, "60% of collapsed building occurs in Lagos – NBBRRI”, Punch newspaper, May 13, 2012. http://www.punchng.com/business/60-of-collapsed-buildings-occur-in-lagos-nbrri/ assessed on 15/05/2014, 2012.
[15] C. Emiero, and O.J. Oyedepo, "An Investigation on the Strength and Workability of Concrete Using Palm Kernel Shell and Palm Kernel Fibre as a Coarse Aggregate”. International Journal of Scientific & Engineering Research, vol. 3, Issue 4, pp. 1-5, 2000.
[16] K. A. Mujedu, I. O. Lamidi, and D. O. Ayelabola, "An Investigation on the Suitability of the Broken Tiles as Coarse Aggregates in Concrete Production” The International Journal Of Engineering And Science, vol. 3, Issue 4, pp. 35-41, 2014.
[17] J. O. Ukpata, M. E. Ephraim, and G. A. Akeke, "Compressive strength of concrete using lateritic sand and quarry dust as fine aggregate” ARPN Journal of Engineering and Applied Sciences, vol. 7, Issue 1, pp. 81-92, 2012.
[18] M. Abdullahi, "Effect of aggregate type on Compressive strength of concrete” International Journal of Civil and structural engineering, vol. 2, Issue 3, pp. 791-800, 2012.
[19] S. P. Ejeh, and O.A.U. Uche, "Effect of Crude Oil Spill on Compressive Strength of Concrete Materials” Journal of Applied Sciences Research, Volume 5, issue 10, pages 1756-1761. 2009.
[20] J. I. Aguwa, "Effect of Hand Mixing on the Compressive Strength of Concrete”, Leonardo Electronic Journal of Practices and Technologies, vol. 17, pp. 59-68, 2010.
[21] G. L. Oyekan, and O. M. Kamiyo, "Effect of Nigerian rice husk ash on some engineering properties of concrete and sandcrete blocks” Proceeding of the 32nd Conference on Our world in concrete and structures, 28 - 29 August 2007, Singapore. 2007.
[22] D. O. Onwuka, L. Anyaogu, C. Chijioke, and W. E. Igwegbe, "Optimization of Compressive Strength of River Sand-Termite Soil Concrete Using Simplex Design”, International Journal of Scientific and Research Publications, vol. 3, Issue 5, pages 1-8, 2013.
[23] D. Dahiru, and N. Shehu, "An evaluation of the concrete production in typical construction sites in Nigeria” Proceedings of the 4th West Africa Built Environment Research (WABER) Conference, 24-26 July 2012, Abuja, Nigeria, pp. 463-472.
[24] B. Mosley, J. Bungey, and R. Hulse, "Reinforce concrete design to Eurocode 2”, Sixth edition, Palgrave Macmillan, ISBN-10 0-230 50071-4, pp. 12, 2007.
[25] BS EN 1992-1-1:2004. Eurocode 2: Design of concrete structures — Part 1-1: General rules and rules for buildings, British Standards Institute Limited.
[26] BS EN 12390-2:2009. Testing hardened concrete. Part 2: Making and curing specimens for strength tests. British Standards Institute Limited.
[27] BS EN 12390-3:2009. Testing hardened concrete. Part 3: Compressive strength of test specimens. British Standards Institute Limited.