Porous ceramic materials by pore-forming agent method: An intermingled fractal units analysis and procedure to predict thermal conductivity

Water Absorption Properties of Cement Pastes: Experimental and Modelling Inspections

“…e greater difference obtained by applying the latter two procedures [9,12] is presumably owing to the fact that they only take into consideration the mean pore radius, while the IFU procedure considers the whole pore size distribution. Indeed, pore size distributions can be very different from each other, and they can determine diverse properties and performances of porous materials [5,29,42,43]. Nevertheless, these pore size distributions can have the same average pore radius.…”

“…e purpose of this communication, in addition to illustrating how experimental data on capillary suction correspond very closely to those obtained from the intermingled fractal unit (IFU) model, is to put forward the idea of developing a new model which is able to predict the properties which are connected to the microstructure in any porous material [5,42,44]. In a former article, it was noted how the IFU and the fractal procedure are able to get some values of thermal conductivity and mechanical properties which are very close to those obtained experimentally [29,43,44]. For this reason, this approach could be a very useful tool to design cement pastes and concrete materials with peculiar physical properties.…”

“…e model predictions are in good agreement with the experimental data. Furthermore, the fractal geometry has been used to correlate mechanical behaviour and thermal conductivity with pore size distribution [29,[39][40][41][42][43][44]. is paper is set out to highlight that, through appropriate fractal modelling techniques applied to the microstructure derived from experimental tests requiring a fairly small amount of material, such as mercury intrusion techniques, it is possible to predict the water content that such microstructures absorb as a function of the exposed surface and the time of exposition: sorptivity coefficient.…”

On the elastic deformation properties of porous ceramic materials obtained by pore-forming agent method

“…In a previous paper, an application of the same IFU model has been proposed in order to predict thermal conductivity [60]. So, the purpose of this communication, therefore, in addition to illustrating how experimental data on mechanical properties correspond very closely to those obtained by the Intermingled Fractal Units model (IFU), is to put forward the idea of developing a new model which is able to predict those properties which are connected to the microstructure of the solids and voids in any porous material [50,52,59].…”

Optimal design on the high-temperature mechanical properties of porous alumina ceramics based on fractal dimension analysis

“…In the past decades, this approach has been extensively used to analyze the correlation between the pore-related characteristics and the performance (including thermal conductivity, strength, and elastic modulus, etc. ), aiming to fabricate porous ceramics with excellent thermal insulation and mechanical performance [19][20][21][22]. So far, a majority of the studies about the fractal analysis have focused on the effect of pore structure on mechanical strength and thermal conductivity of porous ceramics.…”