Pressure mapped squeeze flow (PMSF): Extending rheological characterization of mortars beyond traditional rheometry

The rheometric techniques available for the evaluation of mortars involve a different set flow conditions. Squeeze is based on compression sample with gap reduction and geometric restrictions, providing important information even when phase separation occurs an in conditions similar to those found several practical situations many classes materials, including cement-based ceramics. Traditional squeeze results are related bulk normal force height variation compressed between parallel plates. Additional regarding boundary at interfaces or phenomena differential can be obtained through further instrumentation test. combination pressure mapping technique has been recently proposed, great potential analysis materials other granular suspensions. In this work, four were evaluated by mapped (PMSF) method two displacement rates, new ways analyze developed expand understanding technique, plotting along multiple circumferences each radial position. PMSF also compared rotational rheometry table tests first time, concepts interparticle employed discuss microstructural aspects flow. Due variety mix designs (admixtures, particle size distribution, air content, water factors), presented diverse behaviors, ranging from primarily viscous plastic flows more responses (related friction particles localized formation jammed structures due liquid migration). This work part effort establish foundation as that used wide range materials.