Study on Workability and Hardened Properties of Self Compacted GEOPOLYMER Concrete Cured at Ambient Temperature

Objective: To nullify the use of temperature curing in Self Compacted Geopolymer Concrete (SCGC). Methods/Analysis: SCGC is developed by activating Ground Granulated Blast Furnace Slag (GGBFS). The workability and compressive strength was studied by varying Sodium Hydroxide molarity from 8M to 12 M. Sodium Silicate and Sodium Hydroxide were used for alkaline solution. The water to geopolymer solid ratio was kept 0.25 for all mixes and the total powder content was 500 kg/m³. The test specimens were cured at 60⁰C, 70⁰C, and at ambient temperature to study the effect of temperature on hardened properties. Findings: SCGC satisfied all workability criteria as per the EFNARC guideline. Results show that SCGC with 12M NaOH molarity produced maximum compressive strength. The SCGC specimen cured at 70⁰C produced the highest hardened properties as compare to 60⁰C and ambient temperature. As per results, SCGC can be developed at ambient temperature by using GGBFS as a sole binder. Novelty/Improvement: GGBFS enhances early age strength properties and the strength is comparable to heat cured SCGC as well as SCC based on OPC.