Ceramic properties of kaolinitic clay with monoaluminum phosphate (Al(H2PO4)3) addition

Mocciaro, Anabella; Conconi, María Susana; Rendtorff, Nicolás M.; Scian, Alberto N.

doi:10.1007/s10973-020-10488-2

Cited by 8 publications

(1 citation statement)

References 34 publications

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“…XRD patterns were analyzed with a multipurpose profile-fitting program (FullProf v.5.80-2016) including Rietveld refinement to perform phase quantification of crystalline and amorphous phases [27]. The amorphous phase was quantified by the Le Bail approach, in which this phase is introduced in the refinement as crystalline silica with extremely low crystallite size [28][29][30]. The apparent density and open porosity of the sintered macro-needles were evaluated by the Archimedes immersion method in water.…”

Section: Methodsmentioning

confidence: 99%

Mullite macro-needles for reinforcement of refractory castables

et al. 2022

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Ceramic macro-needles incorporation as reinforcement in commercial refractory castable was studied. Ceramic macro-needles (Ø2x20 mm) were made from kaolinite clay and gibbsite to obtain mullite as the main crystalline phase. Specimens with the ceramic reinforcement were evaluated by compression after being treated at two temperatures (815 and 1400 °C). The results were compared with those obtained using the same commercial concrete but reinforced with steel fibers and without reinforcement. Compression values presented by specimens with ceramic macro-needles were 74% and 50% higher than specimens with steel fibers after exposition to 815 and 1400 °C, respectively. Based on these results, it was established that ceramic macro-needles are a feasible solution to improve the mechanical resistance of castables exposed to high temperatures.

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