Effects of Grinding Process on the Properties of the Coal Bottom Ash and Cement Paste

Sajjad Ali Mangi, Mohd Haziman Wan Ibrahim, Norwati Jamaluddin, Mohd Fadzil Arshad, Sheeraz Ahmed Memon, Shahiron Shahidan

Abstract


The grinding process is necessary to convert original coal bottom ash (CBA) into a powder form. The aim of this study is to evaluate the grinding process effects on physical properties of CBA, it influences on consistency and setting time of cement paste and to predict it potentiality based on chemical characteristics to reduce the alkali-silica reaction (ASR) in concrete. The CBA is the by-product of coal based thermal power plant. Due to high production of electricity in Malaysia, the excess amount of CBA has been produced annually and it causes the environmental problems. Therefore, it is necessary to come up with advanced solutions for that pollution. This study considered the different grinding periods i.e. 2, 10, 20, and 40hrs as to produce different particle fineness. It was perceived through the laboratory findings that the more the grinding period, finer the particle sizes. Besides that, cement paste with 10, 20 and 30% of ground CBA as a substitute of ordinary portland cement (OPC) by weight was prepared, it was observed that the consistency of OPC paste increases with the addition of ground CBA. Moreover, initial and final setting time of cement paste containing ground CBA was observed higher than the OPC paste. Hence, based on experimental analysis and energy efficiency scenario, grinding period of 20hrs with specific surface area 3835.75 cm2/g is suggested for the future studies.

Keywords


cement replacement; coal bottom ash; grinding effects; particle fineness; setting time

Full Text:

PDF

References


Siddique, R., Utilization of Coal Combustion by Products in Sustainable Construction Materials, Resources, Conservation and Recycling, 54(12), pp.1060-1066, 2010. DOI:10.1016/j.resconrec.2010.05.002

Sooraj, V.M., Effect of Palm Oil Fuel Ash (POFA) on Strength Properties of Concrete, International Journal of Scientific and Research Publications, 3(6), pp. 2250–3153, 2013.

Mangi, S. A., Ibrahim H, W. M., Halid Abdullah, A., M Abdul Awal, A. S., Sohu, S. & Ali, N., Utilization of Sugarcane Bagasse Ash in Concrete as Partial Replacement of Cement, IOP Conference Series: Materials Science and Engineering, 271, pp. 1-8, 2017.

Kurama, H. & Kaya, M., Usage of Coal Combustion Bottom Ash in Concrete Mixture, Construction and Building Materials, 22(9), pp. 1922-1928, 2008.

Baite, E., Messan, A., Hannawi, K., Tsobnang, F. & Prince, W., Physical and Transfer Properties of Mortar Containing Coal Bottom Ash Aggregates from Tefereyre (Niger), Construction and Building Materials, 125, pp. 919-926, 2016.

Ramzi, N. I. R., Shahidan, S., Maarof, M. Z. & Ali, N., Physical and Chemical Properties of Coal Bottom Ash (CBA) from Tanjung Bin Power Plant, IOP Conference Series: Materials Science and Engineering, 160(1), 2016. DOI: 10.1088/1757-899X/160/1/012056

Singh, M. & Siddique, R., Properties of Concrete Containing High Volumes of Coal Bottom Ash as Fine Aggregate, Journal of Cleaner Production, 91, pp. 269-278, 2015.

Singh, M. & Siddique, R., Effect of Coal Bottom Ash as Partial Replacement of Sand on Properties of Concrete, Resources, Conservation and Recycling.72, pp. 20-32, 2013.

Singh, M. & Siddique, R., Strength Properties and Micro-Structural Properties of Concrete Containing Coal Bottom Ash as Partial Replacement of Fine Aggregate, Construction and Building Materials, 50, pp. 246-256, 2014.

Siddique, R., Compressive Strength, Water Absorption, Sorptivity, Abrasion Resistance and Permeability of Self-Compacting Concrete Containing Coal Bottom Ash, Construction and Building Materials, 47, pp. 1444–1450, 2013.

Kim, H.K., Ha, K.A. & Lee, H.K., Internal-Curing Efficiency of Cold-Bonded Coal Bottom Ash Aggregate for High-Strength Mortar, Construction and Building Materials, 126, pp. 1-8, 2016

Cheriaf, M., Rocha, J. C. & Péra, J., Pozzolanic Properties of Pulverized Coal Combustion Bottom Ash, Cement and Concrete Research, 29(9), pp. 1387-1391,1999.

Shehata, M.H. & Thomas, M.D.A., The Effect of Fly Ash Composition on the Expansion of Concrete due to Alkali-Silica Reaction, Cem. Concr. Res. 30(7), pp. 1063-72, 2000.

Malvar, L.J., Cline, G.D., Burke, D.F., Rollings, R., Sherman, T.W. & Greene, J., Alkali-Silica Reaction Mitigation: State-of-the-art and Recommendations, ACI Mater Journal, 99(5), pp. 480-9, 2002.

Shehata, M.S. & Thomas, M.D.A., The Role of Alkali Content of Portland Cement on the Expansion of Concrete Prisms Containing Reactive Aggregates and Supplementary Cementing Materials, Cem. Concr. Res., 40(4), pp. 569-74, 2010.

Malvar, L.J. & Lenke, L.R., Efficiency of Fly Ash in Mitigating Alkali-Silica Reaction Based on Chemical Composition, ACI Mater Journal, 103(5), pp. 319-26, 2006.

Venkatanarayanan, H.K. & Rangaraju, P.R., Decoupling the Effects of Chemical Composition and Fineness of Fly Ash in Mitigating Alkali-Silica Reaction, Cem. Concr. Compos., 43, pp. 54-68, 2013.

ASTM C618-05, Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete, Annu. B. ASTM Stand., pp. 3-6, 2005.

Ramezanianpour, A. M. & Hooton, R. D., Thaumasite Sulfate Attack in Portland and Portland-Limestone Cement Mortars Exposed To Sulfate Solution, Construction and Building Materials, 40, pp. 162-173, 2013.

Silva, P. De, Sagoe-Crenstil, K. & Sirivivatnanon, V., Kinetics of Geopolymerization: Role of Al2O3 and Sio2, Cement and Concrete Research, 37(4), pp. 512–518, 2017.

Steveson, M. & Sagoe-Crentsil, K., Relationships between Composition, Structure and Strength of Inorganic Polymers : Ppppart I Metakaolin-Derived Inorganic Polymers, Journal of Materials Science, 40(8), pp. 2023-2036, 2005.

Duxson, P., Provis, J.L., Lukey, G.C., Mallicoat, S.W., Kriven, W.M. & Van Deventer, J.S.J., Understanding the Relationship Between Geopolymer Composition, Microstructure and Mechanical Properties, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 269(1-3), pp. 47-58. 2005.

Khan, R. A. & Ganesh, A., The Effect of Coal Bottom Ash (CBA) on Mechanical and Durability Characteristics of Concrete. Journal of Building Materials and Structures, 2016(3), pp. 31-42. 2016.

Jaturapitakkul, C. & Cheerarot, R., Development of Bottom Ash as Pozzolanic Material. Journal of Materials in Civil Engineering, 15, pp. 48-53, 2003.

Mangi, S.A., Wan Ibrahim, M.H., Jamaluddin, N., Arshad, M.F. & Putra Jaya, R., Short-Term Effects of Sulphate and Chloride on the Concrete Containing Coal Bottom Ash as Supplementary Cementitious Material. Eng. Sci. Tech., Int. J., In Press, available online 10 September 2018. https://doi.org/10.1016/j.jestch.2018.09.001

Pallocka, S.M., Goodarzib, F. & Riediger, C.L., Mineralogical and Elemental Variation of Coal from Alberta, Canada: An Example from the No.2 Seam, Genesee Mine, International Journal of Coal Geology, 43 (1-4), pp. 259-286, 2000.




DOI: http://dx.doi.org/10.5614%2Fj.eng.technol.sci.2019.51.1.1

Refbacks

  • There are currently no refbacks.