%0 Journal Article %T New insight on rheology of self-consolidating earth concrete (SCEC) %+ Université de Sherbrooke (UdeS) %+ Laboratoire des Sciences de l'Ingénieur pour l'Environnement - UMR 7356 (LaSIE) %+ Department of Architecture, Canadian University Dubai (CUD) %A Kohandelnia, Mojtaba %A Hosseinpoor, Masoud %A Yahia, Ammar %A Belarbi, Rafik %< avec comité de lecture %@ 0032-5910 %J Powder Technology %I Elsevier %V 424 %P 118561 %8 2023-06 %D 2023 %R 10.1016/j.powtec.2023.118561 %K Clay Concrete-equivalent mortar Rheology Self-consolidating earth concrete Thixotropy %Z Environmental SciencesJournal articles %X Self-consolidating earth concrete (SCEC) is a novel alternative to facilitate the earth-based construction. A newconcrete-equivalent mortar (CEM) approach with constant excess-paste (EP) thickness was proposed to evaluatethe rheological and thixotropic properties of various SCEC mixtures proportioned with different clay andsuperplasticizer types. The use of non-esterified polycarboxylate (NE-PC) and sodium polynaphtalene superplasticizertypes in combination with a finer clay type led to a thixotropic behavior. Mixtures made with sodiumhexametaphosphate resulted in significantly high yield stress and plastic viscosity values. The rheologicalproperties were mainly controlled by the admixture type, followed by the type and content of clay and water-topowderratio (W/P). Empirical models were proposed to predict the rheology of earth-based paste, CEM, andSCEC mixtures using the governing key mixture parameters, including the fineness of the powder constituents (i.e., clay, silt, and cement), water content, EP thickness, paste volume, and packing of the granular skeleton. %G English %L hal-04078313 %U https://edf.hal.science/hal-04078313 %~ SDE %~ CNRS %~ GIP-BE %~ LASIE %~ UNIV-ROCHELLE %~ EDF