COMPARING COMPRESSIVE STRENGTHS OF LAYERED AND RANDOM PLACEMENT OF EXPANDED POLYSTYRENE WASTES IN QUARRY DUST BLOCKS

Authors

  • Clement Kiprotich Kiptum Department of Civil and Structural Engineering, University of Eldoret, P.O. BOX 1125-3100, Eldoret, Kenya
  • Victor Muroki Mwirigi Department of Civil and Structural Engineering, University of Eldoret, P.O. BOX 1125-3100, Eldoret, Kenya
  • Steve Ochillo Ochieng Department of Civil and Structural Engineering, University of Eldoret, P.O. BOX 1125-3100, Eldoret, Kenya

DOI:

https://doi.org/10.33736/jcest.2110.2020

Keywords:

Compressive strength, density, expanded polystyrene wastes, quarry dust

Abstract

Despite intense research on building materials, the challenge of finding cheap and lightweight construction materials still persist for persons wishing to construct a house. A material that is getting attention of researchers and lightweight is Expanded Polystyrene (EPS). The aim of this study was to compare compressive strength and mass of blocks made when EPS were mixed randomly or in layered manner in cement-quarry dust mortar. The EPS wastes were placed randomly and in a single layer so as to give percentage volume of 0% (control), 10%, 20%, 30%, 40% and 50% EPS of the cube of 150 mm. The results showed that the average compressive strength of mortar was 18.67 ±1.33 N/mm2. The strength reduction proportionality factor for layered mixing was 0.76 to 1 and 0.29 to 1 for random mixing. This showed that reduction of strength was greater in random mixing than layered mixing. Increase of EPS above 30% randomly, resulted in lightweight blocks of between 1319 and 1669 Kg/m3, whereas increasing EPS in layered manner above 50% resulted in lightweight blocks of densities less than 1679 Kg/m3. This research showed that 40% EPS randomly mixing resulted in a light block which met the minimum strength criteria of 3.6 N/mm2.

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Published

2020-04-26

How to Cite

Kiptum, C. K., Mwirigi, V. M., & Ochieng, S. O. (2020). COMPARING COMPRESSIVE STRENGTHS OF LAYERED AND RANDOM PLACEMENT OF EXPANDED POLYSTYRENE WASTES IN QUARRY DUST BLOCKS. Journal of Civil Engineering, Science and Technology, 11(1), 57–63. https://doi.org/10.33736/jcest.2110.2020

Issue

Vol. 11 No. 1 (2020): Journal of Civil Engineering, Science and Technology

Section

Articles

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