Effect of Alkali Activator Ratio on Mechanical Properties of GGBS based Geopolymer Concrete
Sujit Kumar1, Puru Deep Gautam2, B. Sarath Chandra Kumar3
1Sujit Kumar*, UG Students, Department of Civil Engineering, Korneru Lakshamiah Education Foundation, Vaddeswaram, Guntur District, AP., India.
2Puru Deep Gautam, UG Students, Department of Civil Engineering, Korneru Lakshamiah Education Foundation, Vaddeswaram, Guntur District, AP., India.
3B. Sarath Chandra Kumar, Associate Professor, Department of Civil Engineering, Korneru Lakshamiah Education Foundation, Vaddeswaram, Guntur District, AP., India.
Manuscript received on September 16, 2019. | Revised Manuscript received on 24 September, 2019. | Manuscript published on October 10, 2019. | PP: 947-952 | Volume-8 Issue-12, October 2019. | Retrieval Number: J95390881019/2019©BEIESP | DOI: 10.35940/ijitee.J9539.1081219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Geopolymer concrete also referred to as “green” and “environmentally friendly” concrete is carbon free binding material which can be ultimate replacement for traditional Ordinary Portland cement (OPC) concrete. OPC production is solely responsible for seven percentage (7%) of carbon dioxide (CO2 ) gas emission globally. Taken in account, the serious threats imposed by ordinary Portland cement in coming future with its increasing use in construction projects, ecofriendly geopolymer concrete which aren’t harassing to surroundings will be a boon in Civil engineering field. Here, in this paper we studied the behavior of Geopolymer Concrete using (GGBS) under the effect of varying concentration of Alkali Activators. The alkali activators Sodium Hydroxide (NaOH) and Sodium Silicate (Na2SiO3 ) with Alkali Activator ratio (AAR) of 1:1.5, 1:2 & 1:2.5 were used. Also, the molarity of NaOH was altered for 8Molar, 10Molar and 12Molar. The specimens were casted for Compressive, Split Tensile and Flexural test and were tested after 7 days and 28 days of ambient curing. It was observed that Compressive, Split Tensile and Flexural strength of the GPC specimen increased with increasing molarity of Sodium Hydroxide (NaOH) and with increase in Alkali Activator Ratio.
Keywords: Alkali activator, GGBS, Compressive Strength, Flexural Strength, Split Tensile Strength, Molarity, Ambient Curing
Scope of the Article: Concrete Structures