• Shafiya K
• B Nagashree
• Smaeera Fathima
• Sphoorthi S Patali

The project involves the utilization of binders, fly ash (FA) and ground-granulated blast- furnace slag (GGBS) along with activators, sodium silicate and sodium hydroxide that facilitate the alkali activation process for the producing structural lightweight geo-polymer concrete (LGC). To find the ideal combination that would enhance the performance, the alkali binder ratio has been varied. Different percentage combinations of fly ash aggregates that were made by cold bonding FA, water and cinder aggregates were added to the concrete mixtures to determine how they affected the overall performance. Experimental investigations were conducted to evaluate the mechanical properties, density, and durability of the lightweight concrete. From the obtained results we can conclude that the optimum alkali binder ratio for achieving desired properties is found to be 0.4 in which the concrete obtains a 21 MPa compressive strength. Notably, the use of 100% cinder as the coarse aggregate results in the highest strength, demonstrating its potential for structural applications. The obtained optimal curing temperature was 90°C, with a maximum strength of 28 MPa.

Light weight aggregate, geopolymer concrete, geopolymer binders, fly ash aggregate.

"Experimental investigations on the production of alkali-activated lightweight concrete by blending natural and pozzolanic-based aggregates", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 7, page no.e601-e610, July-2023, Available :http://www.jetir.org/papers/JETIR2307464.pdf

"Experimental investigations on the production of alkali-activated lightweight concrete by blending natural and pozzolanic-based aggregates", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 7, page no. ppe601-e610, July-2023, Available at : http://www.jetir.org/papers/JETIR2307464.pdf