Members of the SICon group publish an article in the Materials Science Forum in collaboration with researchers from UFF, IME and UFPA.
The article is titled” Citric Acid Effect in High Early Type Portland Cement Pastes and Mortars” and is present in volume 1012 of the october 2020 journal Materials Science Forum.
The authors of the article are: Beatryz Cardoso Mendes, Rita de Cássia Silva Sant’Ana Alvarenga, Délio Porto Fassoni, Leonardo Gonçalves Pedroti, Afonso Rangel Garcez de Azevedo, Ana Beatriz Porto, Sergio Neves Monteiro, Fernanda Santos da Luz. The group is composed of researchers from the Federal University of Viçosa (UFV), Fluminense Federal University (UFF), Military Institute of Engineering (IME) and Federal University of Pará (UFPA).
This article analyzes the influence of citric acid on the properties of high strength portland cement pastes and mortars, both in fresh and hardened state. Citric acid content ranged from 0 to 0.8 wt%. Tests were performed on cement pastes to determine the water required for normal consistency and initial and final setting times. Mortars were tested to define bulk density, consistency index, fresh air content and compressive strength after 7, 14 and 28 days. XRD analysis was also performed. The results showed that the use of citric acid as a retarding admixture is a viable procedure, as it increased mechanical strength after 14 days and improved the mortar. The full summary and other information about the article can be found at the link below: