ASSESSMENT OF MATERIAL PROPERTIES OF CONCRETE GRAVITY DAMS – AN INDIAN CASE STUDY


is that the rock samples under investigation were fine- to medium-grained textured, poorly foliated and partially weathered. The in situ properties of the concrete obtained for this study have been used in the advanced FEM modelling, wherein the basic objectives remain to obtain reliable model output regarding the realistic deformations, stresses, inclination etc. to study any unusual deflection of the dam.


Acknowledgements


The authors would like to acknowledge the NCB laboratory technical officers and technical assistants, Central Project Management Unit DRIP, Central Water Commission-India, BBMB as well as the World Bank for their assistance in carrying out this sponsored project.


References


[1] ASTM C1260 (2014): Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method).


[2] ASTM C1293 (2018): Standard Test Method for Determination of Length Change of Concrete Due to Alkali-Silica Reaction.


[3] Dent Glasser, L S & Kataoka, N, ‘The Chemistry of Alkali-Aggregate Reactions’, Advances in Cement Research, Vol 18, pp47-63 (1981).


[4] Heinz, D & Ludwing, U, ‘Mechanism of Secondary Ettringite Formation in Mortars Subjected to Heat Treatment’, ACI SP 100, Detroit, US, pp2059-2071 (1987).


[5] IS 2386 Part-VII (1963): Indian Standard Methods of Test for Aggregate for Concrete, Part-VII - Alkali Aggregate Reactivity.


[6] IS 2386 Part-VIII (1963): Indian Standard Methods of Test for Aggregate for Concrete, Part-VIII - Petrographic Examination.


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[7] IS 456 (2000): Indian Standard for Plain and Reinforced Concrete Code of Practice.


[8] IS 383 (2016): Indian Standard for Coarse and Fine Aggregate for Concrete Specification.


[9] Martin, R P, ‘Experimental Analysis of the Mechanical Effects of Delayed Ettringite Formation on Concrete Structures’, PhD thesis, University of Paris, France, pp577 (2010).


[10] Mehta, P K, ‘Concrete Microstructure, Properties and Materials’, Prentice-Hall International Series in Civil Engineering & Engineering Mechanics (1986).


[11] Hoowlader, M K, ‘Effects of Aggregate Types on Thermal Properties of Concrete’, Deptt. of Civil Engg., Bangladesh, ARPN Journal of Engineering & Applied Sciences, Vol 7, pp900-907 (2012).


[12] Neville, A M, ‘Properties of Concrete’, 4th Edition, ELBS, Addison Wesley Longman Ltd, Harlow, England (1996).


DAM ENGINEERING 19


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