The utilization of concrete sludge of batching plant (CSBP) as a partial cement replacement in concrete
Keywords:Batching Plant, Concrete Sludge, Construction Waste, Recycled Material, Strength Performance.
Key players of construction industries prefer to use ready-mix concrete as one of the supplied materials for their projects. In conjunction with this, production of fresh concrete from batching plants is increasing consistently as the development of construction industries. Un-fortunately, more than 8 tons of fresh concrete waste can be obtained and return to the batching plants. In addition, most of the batching plants dispose the concrete waste on the ground or discharging them at the landfill. Thus, this research aims in correlating the strength response to the contribution of Concrete Sludge of Batching Plant (CSBP) as recycled materials and additives in the manufacturing of concrete. In this study, two different replacement levels in percentage of CSBP which are 10% and 20% to cement weight were adopted. The compressive strength of concrete specimens was performed in accordance with the BS EN 12390: 2009. The result revealed that the compressive strength of the CSBP concrete with 20% cement replacement is observed to gain the strength comparable than those of control sample by the value of 41.6 N/mm2 while the control sample achieved 42.6 N/mm2 at 28 days of age. It can be said that CSBP can be used as the potential of recycled material in the conventional concrete to support the green and sustainable approach in construction industries and to solve the issues of overloaded concrete sludge produce by batching plant.
 Kou S., Zhan B., Poon C., (2012) Feasibility study of using recycled fresh concrete waste as coarse aggregates in concrete, Const. Build. Mater. 28, 549-556. https://doi.org/10.1016/j.conbuildmat.2011.08.027.
 CSI (Cement Sustainability Initiative), (2009) Recycling Concrete, World Business Council for Sustainable Development, Switzerland.
 Rosman M.S., Abas N.F., Othuman Mydin M.A., (2014), Concrete Waste as a Cement Replacement Material in Concrete Blocks for Optimization of Thermal and Mechanical Properties, Sustainable Built Environment Symposium (SBES 2014), Vol. 11, SHS Web of Conferences, 01013. https://doi.org/10.1051/shsconf/20141101013.
 Aynur K., Serdar U., (2016), Current Methods for the Utilization of the Fresh Concrete Waste Returned to Batching Plants, Procedia Engineering 161, 42 â€“ 46. https://doi.org/10.1016/j.proeng.2016.08.495.
 Daniel A.L., Charles Z., (2016), Use of contaminated sludge in concrete, Procedia Engineering 145, 1201 â€“ 1208. https://doi.org/10.1016/j.proeng.2016.04.155.
 Aynur K., Serdar U., Bayram E., Volkan A., Ahmet A., Murat A., (2015), Fresh ready-mixed concrete waste in construction projects: a planning approach, Procedia Engineering 123, 268 â€“ 275. https://doi.org/10.1016/j.proeng.2015.10.088.
 Luiz B.P.V., Antonio D.F, (2015), Evaluation of concrete recycling system efficiency for ready-mix concrete plants, Waste Management 56, 337â€“351. https://doi.org/10.1016/j.wasman.2016.07.015.
 Vivian W.Y.T., Tam C.M., (2007) Economic comparison of recycling over-ordered fresh concrete: a case study approach, Res. Cons. Rec. 52, 208-218. https://doi.org/10.1016/j.resconrec.2006.12.005.
 Arunvivek G.K., Maheswaran G., Kumar S.S., Senthilkumar M., Bragadeeswaran T., (2015), Experimental study on influence of recycled fresh concrete waste coarse aggregate on properties of concrete, Int. J. App. Eng. Res. 10, 29809-29815.
 Valls S., YaguÂ¨e A., VaÂ´zquez E., Mariscal C., (2004), Physical and mechanical properties of concrete with added dry sludge from a sewage treatment plant, Cement and Concrete Research 34, 2203â€“2208. https://doi.org/10.1016/j.cemconres.2004.02.004.
 Bhargav T., Pramit M.S., Parth B.P., (2017), Effect of Partial Replacement of Sand with Wastage of Manufactured AAC Block in Concrete, Materials Today: Proceedings 4, 9817â€“9821. https://doi.org/10.1016/j.matpr.2017.06.273.