Utilization of Fly Ash in Civil Engineering- A Review Study
| Author(s) | : | Jaswant Gehlot, Anirudh Singh Sindha, Sumer Singh, Dr. D.G.M. Purohit |
| Institution | : | M.E. Scholar, Department of Civil Engineering, M.B.M. Engineering College, J.N.V. University, Jodhpur, Rajasthan, India |
| Published In | : | Vol. 4, Issue 12 — December 2017 |
| Page No. | : | 555-565 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
Large amount of fly ash discharged from coal-fired power stations is a major problem. Amount of flyash available can be recycled, mainly by adding fly ash to cement. However, the addition of fly ash to cement is limitedbecause the production rate of cement is leveled off, and also the concentration of fly ash in cement is limited.Researchers have studied the aspect of particle size distribution, permeability, slurry flow characteristics, settlingcharacteristics, slump characteristics and so on for mill tailings. Fly ash in terms of particle size and mineralogicalcomposition is similar to mill tailings. There is however not much literature available on direct placement of flyash as a fill material. Investigations on the fly ash have been largely confined to determining physico-chemicalproperties, strength properties (as cement substitute or with binders). The present study therefore makes use ofliterature available in terms of fly ash, to design and conduct different experiments on settling rate and hydraulictransportation aspects of fly ash. Different experiments were conducted to find the pH at different levels of lime, cementand gypsum. These were done to further utilize the cementing property of fly ash and its use for support and fill the minevoids as well as construction of cement of different strength levels. It was observed that the strength level increase withthe increase in the percentage of lime and it was observed to be maximum at 4% of lime and 8 % cement and 4%gypsum.Thus as pH is directly related to strength so it indicated that the strength characteristics was further enhancedusing theaforesaid composition. The SEM of the samples were done to study the characteristics of individual elementsas the element having spherical haps showed maximum pozzolanic character.
Jaswant Gehlot, Anirudh Singh Sindha, Sumer Singh, Dr. D.G.M. Purohit, “Utilization of Fly Ash in Civil Engineering- A Review Study”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 12, pp. 555-565, December 2017.
