Experimental Study on Corrosion Behaviour of Concrete Containing Bottom Ash as Partial Replacement of Fine Aggregate

Abstract:

Concrete is a material synonymous with strength and longevity and plays a vital role in the construction activity. Scarcity of natural sand and its fast rising cost have paved way for use of bottom ash, a residue being collected from the thermal power stations, as substitute for sand. Recent research shows that the mechanical properties of concrete containing bottom ash as a partial replacement of fine aggregate is suitable for construction. The various parameters involved are different percentage of bottom ash and grades of concrete. This present experimental study is made on chloride induced corrosion using accelerated corrosion test (ACT) and related durability properties such as water absorption & porosity, water sorptivity and rapid chloride penetration test (RCPT). Compressive strength test is performed in order to ascertain the mechanical property of bottom ash concrete. The above tests were conducted on the concrete specimens and the results were found comparable with the control concrete up to 20% replacement of bottom ash. Utilization of bottom ash in concrete becomes more significant in cost-saving and reducing the quantity of landfill, thus providing an economical and ecological way of conservation of natural resources.

• Periodical: Applied Mechanics and Materials (Volume 857)
• Pages: 88-94
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.857.88
• Online since: November 2016
• Authors: K. Meenu Priyaa*, P. Srinivasan, P. Gajalakshmi
• Keywords: ACT, Bottom Ash, Chloride, Concrete, Corrosion, Durability, RCPT

References

[1] P. Srinivasan, M Z M Firdows, J. Prabhakar& A Chellappan – A simple accelerated test method for rapid assessment of chloride penetration of concrete with and without surface coating, Indian concrete journal (ICJ), Vol. 81 no. 1, Jan (2007).

[2] Malkit Singh, RafatSiddique – Compressive strength, drying shrinkage and chemical resistance of concrete incorporating coal bottom ash as partial or total replacement of sand, Construction and Building Materials 68 (2014) 39–48.

DOI: 10.1016/j.conbuildmat.2014.06.034

[3] P. Aggarwal, Y. Aggarwal, S.M. Gupta – Effect of bottom ash as replacement of fine aggregates in concrete, Asian journal of civil engineering (building and housing) Vol. 8, no. 1 (2007) Pages 49-62.

[4] H.K. Kim, J.G. Jang, Y.C. Choi, H.K. Lee – Improved chloride resistance of high-strength concrete amended with coal bottom ash for internal curing, Construction and Building Materials 71 (2014) 334–343.

DOI: 10.1016/j.conbuildmat.2014.08.069

[5] Turhan Bilir – Effects of non-ground slag and bottom ash as fine aggregate on concrete permeability properties, Construction and Building Materials 26 (2012) 730–734. Reference to a book.

DOI: 10.1016/j.conbuildmat.2011.06.080

[6] Tutti K, Corrosion of steel in concrete, Forskning 4. 82, Cement Och Betong institutet, Stockholm, (1982).

[7] B. Pradhan and B. Bhattacharjee, Half-cell potential as an indicator of chloride-induced rebar corrosion initiation in RC, Journal of Materials in Civil Engineering, vol. 21, no. 10, p.543– 552, 2009. Reference to a Standards.

DOI: 10.1061/(asce)0899-1561(2009)21:10(543)

[8] IS: 383-1970. Specification for coarse and fine aggregates from natural sources for concrete, New Delhi, India: Bureau of Indian Standard.

[9] IS: 10262-1982. Recommended guidelines for concrete mix design. New Delhi, India: Bureau of Indian Standard.

[10] BIS 516-1959. Methods of tests for strength of concrete, New Delhi, India: Bureau of Indian Standard.

[11] ASTM C 642 – 06 Standard Test Method for Density, Absorption, and Voids in Hardened Concrete.

[12] ASTM C 1585 – 04 Standard Test Method for Measurement of Rate of Absorption of Water by Hydraulic- Cement Concretes.

[13] ASTM C1202. Standard test method for electrical induction of concrete's ability to resist chloride ion penetration.

[14] IS: 1489-1991 (Part-I). Portland Pozzolana Cement Specification. New Delhi, India: Bureau of Indian Standard.