IJE TRANSACTIONS A: Basics Vol. 31, No. 4 (April 2018) 356-363    Article in Press

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N. Yadav, S. Deo and G.D. Ramtekkar
( Received: October 26, 2017 – Accepted: January 04, 2018 )

Abstract    The present paper reports the results of a series of experimental works designed to produce a Strong, Workable, Durable and Sustainable Concrete (water-cement ratio 0.4) in Subtropical Climate using Construction & Demolition waste (C&D waste) crushed bricks (12.04%, 16.05 and 20.07%) as replacement of natural sand (NS). The crushed bricks (CB) have been used earlier as a sand replacement, but in the present study it is also used as an Internal Curing (IC) agent. Most of the prominent studies on IC are based on European and American climatic standpoint whereas the present investigation is in the subtropical climate. To make up for the loss in strength due to the use of marginal material like CB as a sand replacement, additional low-lime class F flyash (5.26% and 11.11%) is used. The combined effects of the two adjustments have resulted in improvement in workability, reduction in shrinkage, increase in strength, improved microstructure and Interfacial Transition Zone (ITZ) of concrete. To improve the flexural strength glass fiber (0.2%) is used effectively. The SEM images also validate the improvement in the microstructure and ITZ.


Keywords    Construction & Demolition (C&D) Waste, Concrete, Internal Curing (IC), Interfacial Transition Zone (ITZ), Shrinkage, Sustainability.


References    P.K. Mehta, P. K. and P.J.M Monteriro, Concrete – Microstructure, Properties and Materials, (Third Edition, Tata McGraw Hill, 2009).A.M. Neville, Properties of concrete, (Fourth Impression, Pearson Education, 2009).ACI Committee 308. Guide to curing concrete (ACI 308R–01, Re-approved 2008). American Concrete Institute, Farmington Hills, Mich, 2001, p. 31Bravo M., De Brito J., Pontes J., Evangelista L., Durability performance of concrete with recycled aggregates from construction and demolition waste plants. Construction and Building Materials 77 (2015) 357–369Soares D., De Brito J., Ferreira J. and Pacheco J., Use of coarse recycled aggregates from precast concrete rejects: mechanical and durability performance Construction and Building Materials ·November 2014 Milicevic I., Bjegovic D., Stirmer N., Optimisation of concrete mixtures made with crushed clay bricks and roof tiles, Magazine of Concrete Research, (2015), 67(3), pp 109–120Ossa A., García J.L., Botero E., Use of recycled construction and demolition waste (CDW) aggregates: A sustainable alternative for the pavement construction industry, Journal of Cleaner Production 135 (2016) pp 379-386Rodríguez C., Parra C., Casado G., Minano I., Albaladejo F., Benito F., Sanchez I., The incorporation of construction and demolition wastes as recycled mixed aggregates in non-structural concrete precast pieces, Journal of Cleaner Production 127 (2016) pp 152-161Coelho A., De-Brito J., Preparation of concrete aggregate from construction and demolition waste (CDW), Handbook of recycled concrete and demolition waste, Wood head Publishing Limited, 2013Igor De la Varga ,  Javier Castro,  Dale Bentz  and Jason Weiss, Application of internal curing for mixtures containing high volumes of fly ash, Cement and Concrete Composites , Volume 34, Issue 9, October 2012, Pages 1001–1008.Dale P. Bentz and W. Jason Weiss, Internal Curing: A 2010 State-of-the-Art Review,    National Institute of Standards and Technology, NISTIR 7765, U.S. Department of Commerce, February 2011.Jason Weiss, Dale .P. Bentz, A. Schindler and Petro Lura, Internal Curing: Constructing more robust concrete, Structure Magazine, 10-14 January 2012. D.P. Bentz, K.A. Snyder, Protected paste volume in Concrete: Extension to Internal Curing using saturated lightweight fine aggregate, Cement and Concrete Research, V. 29, No. 11, Nov. 1999, pp. 1863-1867.Ole Mejlhede Jensen, Use of Superabsorbent Polymers in Concrete An overview of the possibilities offered by using these smart materials as concrete admixtures, Concrete International, January 2013.D.P. Bentz, and K.A. Snyder, Protected Paste Volume in Concrete: Extension to Internal Curing Using Saturated Lightweight Fine Aggregate, Cement and Concrete Research, 29 (11), 1863-1867, 1999. Dale.P. Bentz, Petro Lura, and John W. Roberts, Mixture proportioning for internal curing, Concrete International, V. 27, No. 2, Feb. 2005, pp. 35-40.J. Ye, et al., Effect of Pre-Wetted Lightweight Aggregate on Internal Relative Humidity and Autogenous Shrinkage of ConcreteJournal of Wuhan University of Technology—Materials Science Edition, V. 21, No. 1, 2006, pp. 134-137.Ramachandran, V. and Beaudoin, J.J., \"Handbook of analytical techniques in concrete\", (2001). William Andrew Publishing/Noyes Publications.L. Lam, Y.L. Wong and C.S. Poon*, Degree of hydration and gel/space ratio of high-volume fly ash/cement systems, Cement and Concrete Research, vol. 30, pp. 747±756, 2000.B. Rath, S. Deo, G. Ramtekkar, Durable Glass Fiber Reinforced Concrete with Supplementary Cementitious Materials, TRANSACTIONS A: Basics Vol. 30, No. 7, (July 2017) 964-971Soleimanzadeh, S. and Mydin, M.O., \"Influence of high temperatures on flexural strength of foamed concrete containing fly ash and polypropylene fiber\", International Journal of Engineering, Vol. 26, No. 1, (2013), 365-374.Pofale, A. and Deo, S., \"Comparative long term study of concrete mix design procedure for fine aggregate replacement with fly ash by minimum voids method and maximum density method\", KSCE Journal of Civil Engineering, Vol. 14, No. 5, (2010), 759-764.Nishant Yadav, S.V. Deo and G.D. Ramtekkar,  Mechanism and Benefits of Internal Curing Of Concrete Using Light Weight Aggregates and Its Future Prospects in Indian Construction Industry. International Journal of Civil Engineering & Technology (IJCIET) - Scopus Indexed. Volume:8, Issue:5, Pages:323-334. (2017)

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