Effect of the Portland-Limestone Cement Grades on the Compressive Strength of Hollow Sandcrete Blocks

Authors: Kazeem K. Adewole, Gbenga. M. Ayininula, Wasiu O. Ajagbe, Olabisi Akinade

Abstract:

The commercial sandcrete block makers in Nigeria use the same cement-sand mix ratio for sandcrete blocks production irrespective of the cement grade. Investigation revealed that the compressive strengths of hollow sandcrete blocks produced with Portland-limestone cement grade 42.5 are higher than the sandcrete blocks produced with cement grade 32.5. The use of stronger sandcrete blocks produced with cement grade 42.5 will ensure the construction of stronger buildings and other sandcrete blocks-based infrastructures and reduce the incessant failure of building and other sandcrete blocks-based infrastructures in Nigeria at no additional cost as both cement grades cost the same amount in Nigeria. It is recommended that the Standards Organisation of Nigeria should create grassroots awareness on the different cement grades in Nigeria and specify that Portland-limestone cement grade 42.5 be used for sandcrete blocks production.

 

Keywords: Cement grades, Compressive strength, Sandcrete blocks, Portland-limestone cement, Nigerian cement market.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1093770

References:

[1] H. Mahmoud, H. A. Hamma, and H. A. Abba, "Compressive strength of marketed sandcrete blocks produced in Yola, Nigeria”. Journal of Engineering and Applied Sciences, vol 2, pp. 72-81, 2010
[2] M. Abdullahi, "Compressive strength of sandcrete blocks in Bosso and Shiroro Area of Minna Nigeria”, AU J.T. vol. 9, Issue2, pp. 126-132, 2005.
[3] A. Omoregie, "Impact of Vibration Time on Compressive Strength of Hardened Sandcrete Building Blocks. Buildings 2012, vol. 2, pp. 153-172, 2012.
[4] A.O. Adeyeye, "Strength Properties of Commercially produces Sandcrete Blocks in Ado Ekiti, Akure and Ile Ife Nigeria”, International Journal of Engineering Science Invention, vol 2, Issue 8, pp. 25-34, 2013.
[5] G. L. Oyekan, "Single and mix size coarse aggregate in sandcrete blocks production” Proceeding of the 33rd Conference on our world in concrete and structures: 25-27 August 2008, Singapore.
[6] J.O. Afolayan, C. Arum , C.M. Daramola, "Characterisation of the Compressive Strength of Sandcrete Blocks In Ondo State, Nigeria”, EACE Journal, vol. 4, 2008.
[7] J. C. Ezeokonkwo, "Optimisation of Cavity Size in Hollow Sandcrete Blocks”. Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS), vol. 3, Issue 1, pp. 86-90. 2012.
[8] M. N. Anosike, A. A. Oyebade, "Sandcrete Blocks and Quality Management in Nigeria Building Industry”, Journal of Engineering, Project, and Production Management, vol. 2, Issue 1, pp. 37- 46, 2012.
[9] D.O. Onwuka, N.N Osadebe, C.E. Okere, "Structural Characteristics of Sandcrete Blocks Produced in South-East Nigeria”, Journal of Innovative Research in Engineering and Sciences, vol 4, Issue 3, pp. 483-490, 2013.
[10] D.E. Ewa, and J.O. Ukpata, "Investigation of the Compressive Strengths of Commercial Sandcrete Blocks in Calabar Nigeria”, International Journal of Engineering and Technology, vol. 3, Issue 4, pp.s 447-482, 2013
[11] U. F. Ikechukwu, "Compressive Strength and Costs of Sandcrete Blocks and Blocks made with quarry dust in Nigeria: A Case study of Abakaliki Quarry”, Journal of Chemical, Mechanical and Engineering Practice, vol. 2, Issue 3, pp. 9-17, 2012.
[12] S. P. Kumar, and S.C. Boobalan, "Impact of Saw Dust and Crushed Waste Glass in the Properties of Sandcrete Blocks – A General Review”, International Journal of Advanced Scientific and Technical Research, vol. 1, Issue 3, pp. 114-118, 2013.
[13] NIS 11: 1974: Specification for ordinary Portland cement, Standards Organisation of Nigeria.
[14] NIS 439:2000. Standard for cement. Standards Organisation of Nigeria.
[15] NIS 444-1:2003. Composition, specification and conformity criteria for common cements. Standards Organisation of Nigeria.
[16] P. Hawkins, P. D. Tennis, and R. J. Detwiler, The Use of Limestone in Portland Cement: A State-of-the-Art Review”, EB227, Portland Cement Association, Skokie, Illinois, USA, pp.44, 2003.
[17] Lafarge Cement UK Limited, 2002. Portland limestone cement, http://www.lafarge.co.uk/CementDatasheet/Portland%20Limestone%20Cement.pdf, accessed on 24/04/2012.
[18] H. Hodhod,., Abdeen, A. M. Mostafa, "Experimental Comparative and Numerical Predictive Studies on Strength Evaluation of Cement Types: Effect of Specimen Shape and Type of Sand”, Scientific Research, Engineering, vol. 2, pp. 559-572, 2010.
[19] R. Mathur, A. K. Misra, P. Goel, "2011. Strength of Concrete vs Grades of Cement”, Central Road Research Institute, New Delhi. http://www.nbmcw.com/articles/concrete/25796-strength-of-concrete-vs-grades-of-cement.html. Assessed on 17th April, 2014.
[20] NIS 587:2007. Standards for sandcrete blocks. Part 1- Non-load bearing. Standards Organisation of Nigeria.
[21] BS EN 772-1:2011. Methods of test for masonry units. Part 1: Determination of compressive strength. British Standards Institute Limited.