@thesis{thesis, author={Adhitya Bimo Brata and FARIZ M. QIBRAN AL}, title ={ANALISIS KUAT TEKAN MORTAR GEOPOLYMER DENGAN VARIASI MOLARITAS NaOH DAN PENAMBAHAN AGREGAT HALUS BERBASIS FLY ASH}, year={2023}, url={http://repository.unsri.ac.id/105035/}, abstract={Concrete is a material that is often used in infrastructure, building construction, highways, water buildings, and others. The use of cement as a raw material for making concrete has drawbacks, namely the remaining results of its production produce carbon emissions (CO2) which is not good for the environment. To produce environmentally friendly concrete, this can be done by developing concrete using inorganic binders, such as geopolymers or alumina-silicate polymers which are generally found in fly ash. The research was carried out using experimental methods in the laboratory. The experimental method was carried out using two methods, namely the geopolymer mortar compressive strength testing method with variations in NaOH concentration and the geopolymer mortar compressive strength testing method with variations in the percentage addition of fine aggregate (sand). With a total sample of 3 specimens for each mixture variation. The results of the geopolymer mortar compressive strength test with variations in NaOH molarity showed that the highest compressive strength value was found at molarity 15 molar with a value of 79.07 MPa. The results of the geopolymer mortar compressive strength test with variations in the percentage of sand addition have the highest compressive strength value in the variation of 20% sand aggregate addition with a compressive strength value of 61.60 MPa. Increasing the molarity of NaOH affects the compressive strength of geopolymer mortar. an average increase of 33.83% in the molarity of 1 molar to 15 molar and decreased by 13.66% in the 17 molar variation. The percentage of addition of sand affects the compressive strength of the geopolymer mortar. The compressive strength value of geopolymer mortar with variations in the percentage addition of sand from 0% to 20% increased by 35.48% and decreased by 19.19% from the variation of 20% to 100%.} }