Evaluating model errors using EC2 to design alkali-activated reinforced concrete beams

The paper examines the applicability of the standard code EC2, originally designed for Portland cement (OC), in the flexural and shear design of geopolymer concrete beams (GP). It collects experimental data from the literature on cracking, ultimate moment, and shear strength of reinforced GP beams with and without steel fibers, comparing them with those calculated using the 2nd generation EC2 codes to assess model error. The study considers different precursors (granulated blast furnace slag, fly ash), compressive strengths, and reinforcement ratios. The goal is to contribute to the discussion for the development of specific standards for GP structures. The paper also evaluates whether EC2 can be used to calculate the cracking moment, ultimate moment, and shear of GP concrete beams.