Influence of Superplasticizer Compatibility on the Setting Time, Strength and Stiffening Characteristics of Concrete
Advances in Applied Sciences
Volume 1, Issue 2, October 2016, Pages: 30-36
Received: Sep. 8, 2016;
Accepted: Sep. 23, 2016;
Published: Oct. 14, 2016
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Muhsen Salam Mohammed, Department of Civil Engineering, College of Engineering, Zawia University, Zawia, Libya
Salahaldein Alsadey Mohamed, Department of Civil Engineering, College of Engineering, Bani Waleed University, Bani Walid, Libya
Megat Azmi Megat Johari, Department of Civil Engineering, College of Engineering, Universiti Sains Malaysia, Penang, Malaysia
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The adverse effects of elevated temperatures on the properties of the fresh concrete include increased water demand, shorter setting time and increased slump loss. Superplasticizer (SP) is important to enhance the workability and setting time of concrete under hot weather, hence, an experimental investigation was conducted to determine the effect of dosage of the mentioned admixture. Concrete mixes with SP dosages of 400, 600, 800, 1000 and 1200 ml/100kg of cement were prepared, together with two control mixes (water/cement ratio were 0.56 and 0.66 respectively). After casting, normal curing was carried out on the concrete samples. Properties such as compressive strength, porosity, water absorption, permeability and initial surface absorption were determined, besides determining the workability and setting time of the fresh concrete. Over dosage of SP were found to deteriorate the properties of concrete with indication of lower compressive strength and higher porosity. However, if the dosage levels are lower than the optimum dosage, increase in admixture dosage might help to enhance the concrete characteristics.
Superplasticizer, Compatibility, Strength, Dosage
To cite this article
Muhsen Salam Mohammed,
Salahaldein Alsadey Mohamed,
Megat Azmi Megat Johari,
Influence of Superplasticizer Compatibility on the Setting Time, Strength and Stiffening Characteristics of Concrete, Advances in Applied Sciences.
Vol. 1, No. 2,
2016, pp. 30-36.
Copyright © 2016 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/
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