Methods to Characterize Fly Ash Quality in the Field

- Triwulan, Khorin Agus Priadana, Januarti Jaya Ekaputri


Fly ash is applied widely in concrete. Therefore, the quality of fly ash plays a critical role in altering the compressive strength of concrete. As the fact, it is necessary to provide better insight on the characterization of fly ash based on their correlation index against the strength. This is regarded as the prior studies were merely focused on the relationship of fly ash percentage and compressive strength due to high demand and time-consuming. On the other hand, this paper offers more advanced analysis on the utilization of several methods to determine the effect of different fly ashes on the quality of mortar. In this study, 12 types of fly ash and six methods were involved. The differences between the methods consisted of how the samples were prepared and cured. In the mixture, 20% of fly ash and 80% of OPC (Ordinary Portland Cement) were used as a binder. The specimens were cured in two different methods (normal curing and steam curing). After 28-day of curing, specimens were tested under compression load to obtain the strength. The test results indicated that the method, where the fly ash was sieved in the preparation phase and was cured at a high temperature increased gradually, was found to be the fastest to analyze.


quality of fly ash; binder; steam curing; characterization

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Januarti Jaya Ekaputri, Triwulan, Khorin Agus Priadana, Tri Eddy Susanto and Subaer Junaedi. "Physico-Chemical Characterization of Fly Ash" The 2013 World Congress On Advances in Structural Engineering and Mechanics (ASEM 13) Jeju, Korea, September 8-12, 2013

ASTM C618-03, 2003, "Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use as a Mineral Admixture in Concrete", Annual Book of ASTM Standard.

Triwulan, Luvi Yusepa Dwijayanti, Januarti Jaya Ekaputri ,Ridho Bayuaji, "Lightweight Geopolymer Binder With Abaca Fiber In Different Curing". Materials Science Forum Issn: 1662-9752, Vol. 841, Pp 140-147.2016.

Hongzhu Quan "The Effects of Change in Fineness of Fly Ash On Air-Entraining Concrete", The Open Civil Engineering Journal, 2011, 5, 124-131,2011.

M. R. Karim, M. F. M. Zain, M. Jamil, F. C. Lai and M. N. Islam "Strength Development of Mortar and Concrete Containing Fly Ash: A Review" International Journal of The Physical Sciences Vol. 6(17), Pp. 4137-4153. 2011.

W. J. Mccarter and D. Tran "Monitoring Pozzolanic Activity by Direct Activation with Calcium Hydroxide" Construction and Building Materials, Vol. 10, No. 3, Pp. 179-184,1996.

D. Hardjito and B. V. Rangan "Development and Properties of Low-Calcium Fly Ash-Based Geopolymer Concrete "Research Report Gc 1 Faculty of Engineering Curtin University of Technology, Perth, Australia, 2005.

L. J. Malvar 1, L. R. Lenke 2 "Efficiency of Fly Ash in Mitigating Alkali Silica Reaction Based on Chemical Composition "Aci Materials Journal, Vol. 103, No. 5, Pp. 319-326, 2006.

Skavarla, J., Sisol, M., Botula, J., Kolesarova., M., Dan Krinicka, I. "The Potential Use of Fly Ash with a High Content of Unburned Carbon in Geopolimers." Science Direct. Acta Geodyn. Geomater., Vol. 8, No. 2 (162), 123-132, 2011.

Nurwidayati, R., J.J. Ekaputri, M. Bahrul Ulum, Triwulan and P. Suprobo, "Characterization of Fly Ash on Geopolymer Paste", Materials Science Forum Vol. 841, 118-125, 2016.

A. Fernandez -Jimenez, A.Palomo "Characterization Of Fly Ashes. Potential Reactivity as Alkaline Cements "Elsevier Fuel 82 (2003) 2259-2265, 2003.

Ekaputri Januarti Jaya ,Ulum Muhammad Bahrul , Triwulan ,Ridho Bayuaji , Susanto Tri Eddy and Mohd Mustafa Al Bakri Abdullah . “A Comprehensive Characterization and Determination of Fly Ashes In Indonesia using Different Methods†Applied Mechanics and Materials Vols. 754-755 pp 320-325 ,2016.

Triwulan, Prasma Wigestika and Januarti Jaya Ekaputr, “Addition Of Superplasticizer On Geopolymer Concrete “ ARPN Journal of Engineering and Applied Sciences, Vol. 11, No. 24,14456-14462, 2016



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