Strength Properties of Processed Fly Ash Concrete


  • Sivakumar Anandan Bannari Amman Institute of Technology, Alathukombai Post, Sathyamangalam, Tamil Nadu 638401,
  • Vallarasu Manoharan Sounthararajan KingstonEngineering College, Chittoor Main Road, Katpadi, Vellore, Tamil Nadu 632059



The present paper reports on the mechanical treatment of fly ash for improving the delayed reactivity of fly ash with the hydration product of cement. Grinding of fly ash was carried out in a ball mill for different time durations and processing time was optimized for maximum fineness. Concrete mixes were prepared using various proportions of processed and unprocessed fly ash replacement in cement (25% and 50%). The influence of steel fiber addition on the mechanical properties of the concrete was studied for different curing periods. The test results on pozzolanic activity and lime reactivity indicate that the processed fly ash exhibited a higher strength gain than the unprocessed fly ash, with a maximum increase in compressive strength of up to 12%. Improved pozzolanic properties were noticed due to the increase in fineness of the fly ash particles.


Download data is not yet available.


Ondova, M., Stevulova, N. & Estokova, A., The Study of the Properties of Fly Ash Based Concrete Composites with Various Chemical Admixtures, Procedia Engineering, 42(3), pp. 1863-1872, 2012.

Berryman, C., Zhu, J., Jensen, W. & Tadros, M., High Percentage Replacement of Cement with Fly Ash for Reinforced Concrete Pipe, Cement Concrete and Research, 35, (6), pp. 1088-1091, 2005.

McCarthy, M.J. & Dhir, R.K., Development of High Volume Fly Ash Cements for Use in Concrete Construction, Fuel, 84, (11), pp. 1423-1432, 2005.

Bharatkumar, B.H, Narayanan, R., Raghuprasad, B.K. & Ramachandramurthy, D.S., Mix Proportioning of High Performance Concrete, Cement and Concrete Research, 23(17), pp. 71-80, 2001.

Poon, C.S., lam L., and Wong Y.L., A Study on High Strength Concrete Prepared with Large Volumes of Low Calcium Fly Ash, Cement Concrete and Research, 30(5), pp.447-455, 2000.

Ganesh Babu, K. & Siva Nageswara Rao, G., Efficiency of Fly Ash in Concrete with Age, Cement And Concrete Research, 26(7), pp. 465-474, 1996.

Paya, J., Monzo, J. & Borrachero, M.V., Mechanical Treatment/Grinding Of Fly Ash, Cement Concrete and Aggregates, 1(4), pp. 31-42,1995.

Ukita, K., Ishii, M., & Yamamoto, K., Development of High Strength Concrete Using Classified Fly Ash, Cement Concrete and Aggregates, 4(6), pp. 111-118,1992.

Sharma, R.C., Jain, N.K., & Ghosh, S.N., Semi-Theoretical Method for the Assessment of Reactivity of Fly Ashes, Cement Concrete and Research, 23(2), pp. 41-45, 1993.

Ganesh Babu, K., & Siva Nageswara Rao, G., Efficiency of Fly Ash in Concrete, Cement & Concrete Composites, 15(11), pp. 223-229, 1993.

Hassan. K.E. & Cabrera, G., Microstructure of Processed Fly Ash, Cement Concrete and Aggregates, 4(1), pp. 191-210, 1992.

Erdogu, K. and Turker, P., Effects of Fly Ash Particle Size on Strength of Portland Cement Concrete, Cement Concrete and Aggregates, 4(3), pp. 311-325, 1990.

Haque, M.N., Goplan, M.K. Joshi, R.C. & Ward, M.A., Strength Development of Inadequately Cured High Fly Ash Content and Structural Concretes, Cement Concrete and Research, 16(2), pp. 363-372, 1996.

Ehm, C., Hinrichsmeyer, K., & Diederichs, U., Mechanical and Physical Properties of Fly Ash Concrete after Hydrothermal Storage, Cement Concrete and Research, 17(6), pp. 968-976, 1987.

Bureau of Indian Standards (BIS), IS 3812-1(2003), Specification for Pulverized Fuel Ash, Part 1: For Use as Pozzolana in Cement, Cement Mortar and Concrete, New Delhi, India, 2003.

Bureau of Indian Standards (BIS), IS 1727-1981. Specification for Fly Ash for Use as Pozzolanic Admixture, New Delhi, India, 1981.

Bureau of Indian Standards (BIS), IS 516 -1959. Method of Tests for Strength of Concrete, New Delhi, India, reaffirmed 2004.

Bureau of Indian Standards (BIS), IS 13311-1992 (part1). Non-Destructive Testing of Concrete Part 1 Ultrasonic Pulse Velocity, New Delhi, India, reaffirmed 2004.

Bureau of Indian Standards (BIS), IS 5816-1970. Splitting Tensile Strength of Concrete-Method of Test, New Delhi, India.