Effect of Admixture on Physical and Mechanical Properties of Recycled Brick Aggregate Concrete
Abstract
With the increasing population of the world, the rate of development of infrastructure is increasing day by day; which has placed a massive demand for natural aggregates. Besides, huge amount of demolished construction wastes are generated all over the world which creates pressure on the environment as well as landfills. Therefore, it is necessary to find a sustainable solution to adopt these C&D wastes as an alternative to natural aggregates for construction purposes. Therefore, the objective of the present study is to explore the influence of superplasticizers while adopting recycled brick aggregate (RBA) in the sustainable concrete application as a coarse aggregate. Six different mixes are considered with 100% replacement of recycled brick aggregate and three diverse water-cement (w/c) ratios, such as 0.40, 0.45, and 0.50. To improve the workability and mechanical characteristics of concrete a superplasticizer is used as an admixture. Fresh properties of concrete, compressive strength at normal and high temperatures, flexural strength and splitting tensile strength are presented. The results indicate that addion of superplasticizer improves slump values and reduces air voids of concrete. Although strengths of RBA concrete are lesser than the virgin brick aggregate concrete, they are still satisfactory in the application for structural concrete and can be also significantly improved by incorporating admixture. Finally, this research will help to recycle the brick aggregate instead of dumping it as waste in a landfill.
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References
ACI 318-14. (2014). Building Code Requirements for Structural Concrete and Commentary. American Concrete Institute.
Ajdukiewicz, A., & Kliszczewicz, A. (2002). Influence of recycled aggregates on mechanical properties of hs/hpc. Cement & Concrete Composites, 24, 269–279.
Akhtaruzzaman, A., & Hasnat, A. (1983). Properties of Concrete Using Crushed Brick as Aggregates. Concrete International, 5(2), 58-63.
Alam, M. S., Slater, E., & Billah, A. H. M. M. (2013). Green concrete made with rca and frp scrap aggregate: Fresh and hardened properties. Journal of Materials in Civil Engineering, 25, 1783-1794.
Arabiyat, S., Abdel Jaber, M. t., Katkhuda, H., & Shatarat, N. (2021). Influence of using two types of recycled aggregates on shear behavior of concrete beams. Construction and Building Materials, 279, 122475. doi:https://doi.org/10.1016/j.conbuildmat.2021.122475
ASTM C33/C31M. (2018). Standard Specification for Concrete Aggregates. ASTM International, West Conshohocken, PA.
ASTM C39. (2018). Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens. ASTM International, West Conshohocken, PA.
ASTM C78/C78M. (2016). Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading). ASTM International, West Conshohocken, PA.
ASTM C143. (2015). Standard Test Method for Slump of Hydraulic-Cement Concrete. ASTM International, West Conshohocken, PA.
ASTM C231. (2017). Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method. ASTM International, West Conshohocken, PA.
ASTM C494/C494M. (2019). Standard Specification for Chemical Admixtures for Concrete. In ASTM International (pp. West Conshohocken, PA).
ASTM C496. (2014). Standard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens. ASTM International, West Conshohocken, PA.
Barcelo, L. (2013). A path towards more sustainable cement. ACI fall convention, Phoenix, USA, 24.
C&D Waste Management Guide. (2016). Minimizing construction & demolition waste. . Department of Health, Office of Solid Waste Management, Honolulu, HI.
Carrasquillo, R. L., Nilson, A. H., & Slate, F. O. (1981). Properties of High-Strength Concrete Subjected to Short-Term Loads. ACI Journal Proceedings, 78(3), 171-178.
CSA A23.3-14. (2014). Design of Concrete Structures. Canadian Standards Association.
EN 1992-1-1. (2005). Eurocode 2–Design of Concrete Structures–Part 1–1: General Rules and Rules for Buildings. Thomas Telford, London, UK.
fib. (2010). fib Model Code for Concrete Structures. International Fedaration for Structural Concrete.
Hossain, F. M. Z., Shahjalal, M., Islam, K., Tiznobaik, M., & Alam, M. S. (2019). Mechanical properties of recycled aggregate concrete containing crumb rubber and polypropylene fiber. Construction and Building Materials, 225, 983–996.
Islam, M. J., Dipta, I. A., & Rahat, M. (2018). Investigation of recycled poly-ethylene terephthalate (PET) as partial replacement of coarse aggregate in concrete. Journal of Civil Engineering (IEB), 46(1), 11-20.
Islam, M. J., Meherier, M. S., & Islam, A. K. M. R. (2016). Effects of waste pet as coarse aggregate on the fresh and harden properties of concrete. Construction and Building Materials, 125, 946-951.
Islam, M. J., Rahman, J., Nawshin, S., & Islam, M. M. (2020). Comparative Study of Physical and Mechanical Properties of Machine and Manually Crushed Brick Aggregate Concrete. MIST International Journal of Science and Technology, 8(1). doi:10.47981/j.mijst.08(01)2020.188(01-09)
Kou, S. C., Poon, C. S., & Etxeberria, M. (2011). Influence of recycled aggregates on long term mechanical properties and pore size distribution of concrete. Cement & Concrete Composites, 33, 286–291.
Kou, S. C., Poon, C. S., & Etxeberria, M. (2014). Residue strength, water absorption and pore size distributions of recycled aggregate concrete after exposure to elevated temperatures. Cement & Concrete Composites, 53, 73–82.
Mehta, P. K. (2009). Global concrete industry sustainability. ACI Concr. Int., 32(2), 45-48.
Mohammed, T. U., & Hasnat, A. (2014). Modulus of rupture of concrete made with recycled brick aggregate. The 6th International Conference of Asian Concrete Federation, Seoul, Korea.
Mohammed, T. U., Hasnat, A., Awal, M. A., & Bosunia, S. Z. (2013a). Recycling of brick aggregate concrete :An extended study on some key issues. Third International Conference on Sustainable Construction Materials and Technologies, Japan.
Mohammed, T. U., Hasnat, A., Awal, M. A., & Bosunia, S. Z. (2013b). Recycling of brick aggregate concrete: Physical and mechanical properties. Third International Conference on Sustainable Construction Materials and Technologies, Japan.
Mohammed, T. U., Hasnat, A., Awal, M. A., & Bosunia, S. Z. (2015). Recycling of brick aggregate concrete as coarse aggregate. Journal of Materials in Civil Engineering, 27(7).
Rodríguez-Robles, D., García-González, J., Juan-Valdés, A., Morán-Del Pozo, J. M., & Guerra-Romero, M. I. (2015). Overview regarding construction and demolition waste in spain. Environ. Technol., 36(23), 3060-3070.
Shahjalal, M., Hossain, F. M. Z., Islam, K., Tiznobaik, M., & Alam, M. S. (2019). Experimental study on the mechanical properties of recycled aggregate concrete using crumb rubber and polypropylene fiber. CSCE Annual Conference, Canada.
Shahjalal, M., Islam, K., Rahman, J., Ahmed, K. S., Karim, M. R., & Billah, A. H. M. M. (2021). Flexural response of fiber reinforced concrete beams with waste tires rubber and recycled aggregate. Journal of Cleaner Production, 278, 123842. doi:https://doi.org/10.1016/j.jclepro.2020.123842
Smith, J. T. (2010). Recycled concrete aggregate – A viable aggregate source for concrete pavements. (PhD), University of Waterloo, Canada.
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