EXPERIMENTAL STUDY ON BEHAVIOUR OF FLYASH BASED GEOPOLYMER CONCRETE

Objective: The experimental study on behavior of fly ash based geo-polymer concrete and other parameters like strength properties, concentration of alkaline solution, ratio of NaOH to Na2Sio3, curing time, additional water in mix. Method: In the present study sustainable materials were used such as Fly ash. Combination of Sodium Hydroxide and sodium silicate is used as activator solution to form geopolymer concrete. The activator solution is prepared 24 hours prior of casting. The mix is designed for 10 Molarity with varying ratios of 1:2, 1:2.5, 1:3. The GPC specimens are tested for compression, flexural and tension tests at the age of 3, 7, 28 days. Findings: As the activator ratio increases the compressive strength, Split tensile strength, Flexural strength is also increased. As the time curing is increased the geopolymer specimens also improved. Applications/ Improvements: Fly ash based geoploymer concrete can be used as precast products like parking tiles, pavement tiles, precast GPC beams, girders, railway sleepers, building blocks, electric power poles. They are good resistance towards fire, permeability. Objective: The experimental study on behavior of fly ash based geo-polymer concrete and other parameters like strength properties, concentration of alkaline solution, ratio of NaOH to Na2Sio3, curing time, additional water in mix. Method: In the present study sustainable materials were used such as Fly ash. Combination of Sodium Hydroxide and sodium silicate is used as activator solution to form geopolymer concrete. The activator solution is prepared 24 hours prior of casting. The mix is designed for 10 Molarity with varying ratios of 1:2, 1:2.5, 1:3. The GPC specimens are tested for compression, flexural and tension tests at the age of 3, 7, 28 days. Findings: As the activator ratio increases the compressive strength, Split tensile strength, Flexural strength is also increased. As the time curing is increased the geopolymer specimens also improved. Applications/ Improvements: Fly ash based geoploymer concrete can be used as precast products like parking tiles, pavement tiles, precast GPC beams, girders, railway sleepers, building blocks, electric power poles. They are good resistance towards fire, permeability.