Open AccessEffect of Alkali Activator Ratio on Mechanical Properties of GGBS based Geopolymer Concrete
Author(s) -
Suresh Kumar,
Prikshit Gautam,
B. Sarath Chandra Kumar
Publication year - 2019
Publication title -
international journal of innovative technology and exploring engineering
Language(s) - English
Resource type - Journals
ISSN - 2278-3075
DOI - 10.35940/ijitee.j9539.1081219
Subject(s) - sodium hydroxide , portland cement , ground granulated blast furnace slag , sodium silicate , compressive strength , ultimate tensile strength , geopolymer , materials science , curing (chemistry) , geopolymer cement , molar concentration , composite material , alkali metal , flexural strength , cement , chemistry , organic chemistry
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