Authors
Miriam Hernández; Carlos Rodríguez; Rosa Navarro; Carlos Parra; Marina Sánchez; Roberto Rodríguez; Pablo Gómez; Fernando Fernández; Isidro Sánchez. drive.google.com
Abstract
The work studies recycled aggregates that contain gypsum—common in C&DW—and their effect on mortar performance when combined with different binders: Portland cements (CEM I, CEM III/B, CEM IV) and alkali-activated slag (AAS). Gypsum contents of 2%, 5%, 10%, and 20% (replacing natural aggregate) were assessed via compressive and flexural strength, ultrasonics, and dimensional stability. Up to ~2% gypsum, behavior is comparable to reference mixes across all binders. Above that threshold, responses diverge by cement type; with CEM III/B and CEM IV the measured properties are least affected, whereas higher gypsum tends to be more detrimental in other systems.
Type of publication
Conference paper (SCMT6 proceedings). drive.google.com+1
Conference / Publisher
Sixth International Conference on Sustainable Construction Materials and Technologies (SCMT6), ENTPE—University of Lyon, France (9–14 June 2024). Proceedings published by SCMT Conferences. entpe.fr+1
Keywords
Mixed recycled aggregate; recycled gypsum; alkali-activated slag; C&DW; durability; mechanical performance. drive.google.com
