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10. MATHEMATICAL RELATIONSHIP OF THE EFFECT OF SUCROSE ON STRENGTH AND SETTING TIMES OF CONCRETE by Nwankwo E. and Kayode-Ojo N. Volume 52 (July & Sept., 2019 Issue)
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MATHEMATICAL RELATIONSHIP OF THE EFFECT OF SUCROSE ON STRENGTH AND SETTING TIMES OF CONCRETE

Nwankwo E.1 and Kayode-Ojo N.

Department of Civil Engineering, University of Benin, Benin City, Nigeria

Abstract

This paper presents a mathematical model to capture the relationship between the quantity of sugar, setting times and strengths of a grade 35 concrete. The mathematical model developed would aid designers of concrete mixes, with sugar admixtures, to obtain a balance between setting times and strengths. An experimental investigation was conducted by adding sucrose crystals (sugar), C12H22O11, to the concrete (between 0 to 10% wt. of cement was replaced with Sucrose Crystals). The effect of the addition of sucrose crystalson setting times, compressive strengths and on the workability of concrete were observed. At 0.1% sugar content, a significant increase in the setting times of concrete was observed with no negative impact on the compressive strength of concrete. However, as sugar content goes beyond 1 % of the weight of cement, the retarding effect of sugar admixtures diminishes significantly. 

Keyword: Regression, compressive strength, workability, setting time

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