DECAYING EXPONENTIAL MODELS FOR PREDICTING THE SETTING TIME OF CONCRETE AS A FUNCTION OF ITS PENETRATION BY PROCTOR NEEDLE USING SUGAR AS ADMIXTURE

Umeonyiagu, I. E.; Ikezue, E. N

Authors & affiliations

Umeonyiagu, I. E.

Dept. of Civil Engineering, Chukwuemeka Odumegwu Ojukwu University, P.M.B.02, Uli, Anambra State, Nigeria.

Ikezue, E. N

Dept. of Chemical Engineering, Chukwuemeka Odumegwu Ojukwu University, P.M.B.02, Uli, Anambra State, Nigeria

Abstract

Summary

This research work set out to develop decaying exponential models for predicting the setting time of concrete as
a function of its penetration by proctor needle using common sugar as the admixture. Various percentages of
sugar by weight of cement (0.01% —1%) were added to the concrete mix of 1:1:2/0.5 by weight and tested for
setting every 15 minutes. It was shown that as the concrete set, the depth of penetration decreased exponentially
following decaying models of the form Y = C1e
-C
2
X where Y represents the depth of penetration of the proctor
needle, x the delay in minutes, C1 and C2 are constants. Also, the research showed that increases in the
percentage of sugar present resulted in the slowing down of the rate of setting of concrete and increased the
average penetration per minute.

Keywords

Index Terms

Concrete Sugar Decaying Exponential Model Proctor Needle.

Citation & details

How to cite this article

Authors: Umeonyiagu, I. E., Ikezue, E. N

Volume/Issue: Volume 1, Issue 1

Pages: 1-8

Published: February 29, 2016

Affiliations: Dept. of Civil Engineering, Chukwuemeka Odumegwu Ojukwu University, P.M.B.02, Uli, Anambra State, Nigeria., Dept. of Chemical Engineering, Chukwuemeka Odumegwu Ojukwu University, P.M.B.02, Uli, Anambra State, Nigeria

Umeonyiagu, I. E., Ikezue, E. N (2016). DECAYING EXPONENTIAL MODELS FOR PREDICTING THE SETTING TIME OF CONCRETE AS A FUNCTION OF ITS PENETRATION BY PROCTOR NEEDLE USING SUGAR AS ADMIXTURE. International Journal of Innovative Engineering, Technology & Science (IJIETS), Volume 1, Issue 1, 1-8.

Umeonyiagu, I. E., Ikezue, E. N. "DECAYING EXPONENTIAL MODELS FOR PREDICTING THE SETTING TIME OF CONCRETE AS A FUNCTION OF ITS PENETRATION BY PROCTOR NEEDLE USING SUGAR AS ADMIXTURE." International Journal of Innovative Engineering, Technology & Science (IJIETS), vol. Volume 1, Issue 1, 2016, pp. 1-8.

Umeonyiagu, I. E., Ikezue, E. N. "DECAYING EXPONENTIAL MODELS FOR PREDICTING THE SETTING TIME OF CONCRETE AS A FUNCTION OF ITS PENETRATION BY PROCTOR NEEDLE USING SUGAR AS ADMIXTURE." International Journal of Innovative Engineering, Technology & Science (IJIETS) Volume 1, Issue 1 (2016): 1-8.

@article{decayingexponentialmodelsforpredictingthesettingtimeofconcreteasafunctionofitspenetrationbyproctorneedleusingsugarasadmixture2016, author = {Umeonyiagu, I. E. and Ikezue, E. N}, title = {DECAYING EXPONENTIAL MODELS FOR PREDICTING THE SETTING TIME OF CONCRETE AS A FUNCTION OF ITS PENETRATION BY PROCTOR NEEDLE USING SUGAR AS ADMIXTURE}, journal = {International Journal of Innovative Engineering, Technology & Science (IJIETS)}, year = {2016}, volume = {Volume 1, Issue 1}, pages = {1-8} }

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