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Elvis, M. M.
Department of Civil Engineering, Michael Okpara University of Agriculture, Umudike, Umuahia, Abia State, Nigeria.
Ibearugbulam, M. O.
Department of Civil Engineering, Federal University of Technology, Owerri, Imo State, Nigeria.
ABSTRACT
In this research work, the effect of rice husk
ash on concrete produced with cellulose industrial residue was studied. A mix
proportion of 1:1.8:3.7 with water cement ratio of 0.47 were used. The
percentage replacement of Ordinary Portland Cement (OPC) with cellulose
industrial residue and rice husk ash used were 0%, 5%, 10%, 20% 30% and 40%.
Concrete cubes of 150mm x 150mm x 150mm of Ordinary Portland Cement/Cellulose
Industrial Residue and Ordinary Portland Cement/Cellulose Industrial Residue/Rice
Ash were cast and cured at 3,7,28,60 and 90 days respectively. At the end of
each hydration period, the concrete cubes were crushed and their compressive
strength were determined. The result of compressive strength of 5-40%
replacement of cement with cellulose industrial residue ranges from 13.02-32.81
N/mm2 as against 25.60-42.08N/mm2 for the control test.
The result of the compressive strength of 5-40% replacement of cement with Cellulose
Industrial Residue and Rice Husk Ash ranges from 13.17-36.30N/mm2 as
against 25.60-42.08N/mm2 for the control test. The result of the initial
and final setting time of Ordinary Portland Cement/Cellulose Industrial Residue
and Cement/Cellulose Industrial Residue/Rice Husk Ash for 5-40% replacement of
cement ranges from 61-118mins, 58-110mins and 620 – 836mins, 598 – 799mins
respectively as against 52mins and 590mins for the control test. The main
conclusion of this study is that the incorporation rice husk ash into cellulose
industrial residue increase the strength of concrete produced. The objective of
this study is to assess the strength of concrete produced when two pozzolanic
materials were used to replace cement in producing concrete.
Keywords: Setting time, compressive strength, Cellulose Industrial Residue, Rice Husk Ash, curing
https://doi.org/10.33922/j.ujet_v5i1_1
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Published
Saturday, September 14, 2019
Issue
Vol. 5 No. 1, JUNE 2019
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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