Development of alcoholic sucrose-based superplasticizer for geo-polymeric concrete and its process thereof

A process for preparing a geo-polymeric concrete, the process comprising:

• mixing 10-20 wt % of class F fly ash, 25-35 wt % of river sand, and 20 to 40 wt % of a natural aggregate in a motorized concrete mixer for about 5 to 8 minutes to obtain a pre-mixture;
• adding 1 to 2 wt % of silica fume according to the wt % of class F fly ash to the pre-mixture to obtain a dry homogeneous mixture;
• mixing sodium silicate (Na2SiO3), sodium hydroxide (NaOH), and water to obtain an alkaline activator solution;
• adding the alkaline activator solution to the dry homogeneous mixture for about 5 to 8 minutes to obtain a fresh geo-polymeric concrete;
• adding 0.5 to 3 wt % of a superplasticizer according to the wt % of class F fly ash to the fresh concrete and mixing for about 4 to 6 minutes, wherein the superplasticizer comprises about 17 ml of commercial grade ethyl alcohol and 60 g of sucrose in 100 ml water;
• filling into a 15 cm X 15 cm X 15 cm cube and vibrating for about 3 minutes;
• and
• curing in a hot air oven at 60° C. for 48h rs followed by curing at ambient temperature for 28 days to obtain a geo-polymeric concrete.