A Study on the Effect of Time Duration by Vibrating or Tamping Fresh Concrete on the Compressive Strength of C-25 Concrete
American Journal of Applied Scientific Research
Volume 3, Issue 6, November 2017, Pages: 72-79
Received: Jan. 29, 2017;
Accepted: Feb. 23, 2017;
Published: Nov. 28, 2017
Views 3036 Downloads 150
Afework Achalu, Construction Engineering and Management, School of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia
Emer Tucay Quezon, Construction and Engineering Management Stream, School of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia
Gerry Bangayan Macarubbo, School of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma, Ethiopia
Follow on us
Many years ago, consolidation accomplished by laborers wielding a variety of spades, tampers, and similar tools. In Ethiopia, there is no enough knowledge by the laborers, while the site engineers ignored the correct application due to some constraints. The agreement of acceptable vibration level in fresh concrete to which tamping time duration is optimum is an issue to obtain the desired specific compressive strength. This research study aims to evaluate the maximum time length and techniques used to the Vibrating or Tamping fresh concrete and its effect on the compressive strength of C-25 Concrete through internal Rodding. Therefore, to study the effects of the period by vibrating or tamping, the needle type internal vibrator was used to test new concrete cubes based on ACI309R-96. The quality of concrete is important to make physical tests on materials used before any actual experiments to perform. The fresh concrete samples tested by using internal vibration methods and techniques of compaction with different time duration of 1sec, 2sec, 3sec, 4sec, and 5sec. These tests performed by using steel rod in fresh concrete to know the Optimum time of compaction by internal vibration on the cube test of new concrete. Laboratory experiments had been conducted to check the methods and techniques applied to construction sites, as well as site observation on the effects of the vibration time of fresh concrete on the compressive strength and flexural strength of C-25 Concrete with varying vibration time duration and steel rod tamping. Based on the results of cube tests of compressive strength of Concrete Samples have been checked at 3rd day, 7th day and the 28th day. This research study found out that the Optimum period of compaction was 3sec to produce an acceptable right quality of the concrete mix. Likewise, the flexural strength of Concrete Sample, when it tested in the laboratory at 7th day and 28th day, the results revealed that the flexural strength improved when vibration time increased, but the amount of water has to be reduced to obtain the desired strength. Finally, Tamping is needed to place fresh concrete in the mold correctly. Furthermore, new concrete produced should match the properties and avoid improper tamping or vibration applications. This situation must not cause differences in compressive strength of concrete.
Compressive Strength, Flexural Strength, Fresh Concrete, Internal Vibration, Normal Strength Concrete, Optimum Vibration Time, Rodding/Tamping
To cite this article
Emer Tucay Quezon,
Gerry Bangayan Macarubbo,
A Study on the Effect of Time Duration by Vibrating or Tamping Fresh Concrete on the Compressive Strength of C-25 Concrete, American Journal of Applied Scientific Research.
Vol. 3, No. 6,
2017, pp. 72-79.
Copyright © 2017 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/
) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Concrete Works Materials Manual.
Zongjin Li (2011), Advanced Concrete Technology.
Concrete Works Manual 403 by ACI Committee U.S.A.
ANOSIKE. M. N. (2011), Parameters for Good Site Concrete Production Management Practice in Nigeria July 2011.
ACI 309 R-96, “Guide for Consolidation of Concrete,” Reported.
DUNAREA. D. J. (2004), the Annals of Concrete Consolidation and Vibration, University of Galati Fascicle XIV Mechanical Engineering.
Design of Normal Concrete Mixes, 2nd Edition by Building Research Establishment Ltd, the Transport Research Laboratory and the British Cement Association.
Effects of Vibration time on the strength of Ordinary and High-Performance Concrete, Department of Civil Engineering, Karadeniz Technical University, Trabzon/Turkey http://www.ktu.edu.tr.
Ethiopian Building Code Standard for Structural Use of Concrete /EBCS-2/, Addis Ababa, 1995.
Impact of Vibrations on the Final Characteristics of Normal and Self-compacting concrete.
N. Suresh Professor, NIE, Mysore- Workability of concrete.
Omoregie, A. (2012). Impact of Vibration, Time on Compressive Strength of Hardened Concrete, Building Blocks School of Built Environment and Engineering, University of Bolton (UK), UAE Campus, Al Hudaiba–Bareraat.
Sedigheh S, (2012). Effect of Vibration, Time on Some Mechanical Properties of High Strength Steel Fiber Reinforced Concrete, Institute of Graduate Studies and Research in Partial Fulfillment of the Requirements for the Degree of Master of Science in Civil Engineering, Eastern Mediterranean University January 2012 Gazimağusa, North Cyprus.