Abstract

Common river sand is expensive due to excessive cost of transportation from natural resources. Also large scale depletion of these sources creates environmental problems. In such a situation the pond ash can be an economical alternative to the river sand. Pond ash can be defined as residue and by-product of thermal power plant stations to form fine particles less than 4.75 mm. Usually, Pond ash is used in a large scale for manufacturing of bricks. Use of pond ash as a fine aggregate in concrete mortar draws serious attention of researchers. This study reports the results of some experimental studies on the use of pond ash as Fine Aggregate (FA) in concrete. Super plasticiser is used to increase the workability of concrete with lower water cement ratio. The percentage of pond ash added by weight was 0, 20, 30, 40 and 50, respectively as replacement of FA used in concrete. Experiments were carried out to determine the compressive, splitting tensile and flexural strength with those of conventional concrete made with pond ash as fine aggregate. The various mechanical properties were studied and compared with natural fine aggregate. The test results obtained indicate that pond ash of marginal quantity as partial sand replacement has beneficial effect on the mechanical properties. The strength development for various percentages (0-50%) replacement of fine aggregate with pond ash can easily be equated to the strength development of normal concrete with various ages. The properties of aggregates were also compared. Test result indicates that the workability of pond ash concrete is good and the strength characteristics are comparable to those of conventional concrete.

Keywords:

Compressive strength, flexural strength, normal concrete, pond ash, split tensile strength,

References

1. Aggarwal, P., Y. Aggarwal and S.M. Gupta, 2007. Effect of bottom ash as replacement of fine aggregate in concrete. Asian J. Civil Eng. Build. Housing, 8(1): 49-62.
   
2. American Coal Ash Association, 1996. Coal Combustion Product-production and Use. Alexandria, Verginia.
   
3. Kim, H.K. and H.K. Lee, 2011. Use of power plant bottom ash as fine and coarse aggregates in high strength concrete. Constr. Build. Mater., 25: 1115-1122.
   CrossRef    
4. Leonards, G.A. and B. Bailey, 1882. Pulverized coal ash as structural fill. J. Geotech. Eng. Div., 108: 517-531.
   
5. Mangaraj, B.K. et al., 1994. Use of ponded fly ash as part of replacement of fine aggregate in mortar and concrete. ICJ, pp: 279-282.
   
6. Mohd Syahrul, H.B.M.S., M. Fadhluhartini and M. Zulkifli, 2010. The properties of special concrete using washed bottom ash as partial sand replacement. Int. J. Sustain. Constr. Eng. Technol., 2: 65-76.
   
7. Ranganath, R.V., 1995. A study on the characterization and use of ponded fly ash as fine aggregate in mortar and concrete. Ph.D. Thesis, Report 1995, IITD, Delhi.
   
8. Ranganath, R.V., B. Bhattacharjee and S. Krishnamoorthy, 1994. Influence of size fraction of ponded ash on its pozzolanic activity. Cement Concrete Res., 28(5): 749-761.
   CrossRef    
9. Siddique, R., 2004. Performance characteristics of high volume class fly ash concrete. Cement Concrete Res., 33(3): 487-493.
   CrossRef    
10. Sivasundram, V. and V.M. Malhotra, 2004. High performance high volume fly ash concrete. Indian Concrete J., Nov(2004): 13-21.
    
11. Vimal, K., M. Mukesh, S.S. Shashank and D. Sagar, 2005. Fly ash: An environment saviour. Fly Ash India 2005. Fly Ash Utilization Programme, TIFAC, DST, New Delhi.
    PMid:16393154    
12. Vladimir, K. and B. Vladimir, 2000. Environmental Impact of heavy metals contained on fly ash emitted from the Thai lignitefired power plant. ASC Div. Fuel Chem., 45(1): 83-87.
    

Competing interests

The authors have no competing interests.

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