Saridemir, MustafaCelikten, Serhat2024-11-072024-11-0720220950-06181879-0526https://doi.org/10.1016/j.conbuildmat.2021.125886https://hdl.handle.net/11480/14778The primary aim of the present study is to research the effect of binary blended on the mechanical, microstructural and durability properties of alkali activated lightweight aggregate concretes (AALWACs) used basaltic pumice (BP) as lightweight aggregate. Ground granulated blast furnace slag (GGBFS) and fly ash (FA) as precursors are activated with the mixtures of sodium silicate (Na2SiO3) and sodium hydroxide (NaOH) in diverse SiO2/Na2O ratios (Ms). The unit weight, compressive strength (f(c)), flexural strength (f(fs)) and splitting tensile strength (f(sts)) and water absorption of AALWACs are determined. Moreover, the f(c) and weight loss of AALWACs exposed to high temperature, acid and sulfate effects are determined separately. The results show that higher strength can be obtained from the AALWACs compared to the control concrete (C) produced with only Portland cement. The effects of high temperatures on the microstructures of AALWACs are examined by X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and polarized light microscope (PLM) analyses. As the temperature exposed to the AALWACs increases, SEM and PLM analyses indicate that the deterioration, alteration, discoloration, pore and crack in their microstructures increase.eninfo:eu-repo/semantics/closedAccessBasaltic pumiceBlast furnace slagFly ashAlkali-activated lightweight aggregate concreteMechanical, microstructural and durability propertiesArticle31710.1016/j.conbuildmat.2021.1258862-s2.0-85120454913Q1WOS:000736961400001Q1