• R.Rajalakshmi
• P.Revathi

In the present scenario, an increase in population and infrastructure development leads to the generation of lots of construction and demolition waste(C&D) and industrial waste products in to the environment. The Geo-polymer concrete (GPC) is an eco-friendly promising technology which eliminate the use of ordinary Portland cement (OPC) with the industrial waste or by-products as a binding material which is rich in alumina and silica. An attempt has been made in this study to investigate the behaviour of ground granulated blast furnace slag (GGBFS) based GPC incorporating surface modified recycled concrete aggregate(RCA) with pre-soaking technique. The sodium hydroxide (NaOH) and sodium silicate (Na2Sio3) was used as alkaline activators to replace the water. The molarity of NaOH varied from 8M to 14M.The alkaline solution to binder ratio was taken as 0.45 and 0.5 with Na2Sio3 to NaOH ratio as 2.5. An experimental results reveal that the compressive strength of GPC was maximum with recycled coarse aggregates pre-soaked with 30% mixture of GGBFS with water.

Recycling of waste concrete, Global warming, Conservation of natural resources, geopolymer concrete

"EXPERIMENTAL STUDY ON THE PERFORMANCE OF GEOPOLYMER CONCRETE WITH SURFACE MODIFIED RECYCLED CONCRETE AGGREGATES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 4, page no.1634-1641, April-2019, Available :http://www.jetir.org/papers/JETIR1904S39.pdf

"EXPERIMENTAL STUDY ON THE PERFORMANCE OF GEOPOLYMER CONCRETE WITH SURFACE MODIFIED RECYCLED CONCRETE AGGREGATES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 4, page no. pp1634-1641, April-2019, Available at : http://www.jetir.org/papers/JETIR1904S39.pdf