Accelerated Method of Concrete Mix Proportioning by Incorporating Fly Ash and Silica Fume
P. Nikitha1, B. Kameswara Rao2
1P. Nikitha, Department of Civil Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur (A.P), India.
2B. Kameswara Rao, Department of Civil Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur (A.P), India.
Manuscript received on 02 May 2019 | Revised Manuscript received on 14 May 2019 | Manuscript Published on 28 May 2019 | PP: 461-465 | Volume-7 Issue-6C2 April 2019 | Retrieval Number: F10830476C219/2019©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: The strength of concrete in construction works is calculated after 7days or 28 days of curing. If the strength is not achieved for 28 days, it is extended for 28 days more. This procedure is too long for some of the construction activities. Accelerated curing method is used to get the compressive strength values after 24 hours. By using those values, the prediction of 28 days compressive strength is possible. This paper deals with the accelerated curing of Fly ash and silica fume specimens and compared with conventional concrete. Cement is partially replaced with Fly ash and silica fume with varying percentages (70%, 60%, 50%, 40% and 30%) in water cement ratios (0.3, 0.4 and 0.5). As per IS 9013:1978, the correlation graph of compressive strength is for plain concrete. This work comprises of developing the correlation for fly ash and silica fume specimens under accelerated curing. By this research, a new equation is developed by using compressive strength values of accelerated curing to assess the compressive strength attained in 28 days.
Keywords: Accelerated Curing, Compressive Strength, Fly Ash, Silica Fume.
Scope of the Article: Concrete Structures