Scripta Metallurgica et Materialia
Effect of particle modulus and toughness on strength and toughness in brittle particulate composites
References (12)
- et al.
Acta Metall.
(1983) - et al.
J. of Nondestruct. Eval.
(1980) - et al.
J. Am. Ceram. Soc.
(1980)et al.J. Am. Ceram. Soc.
(1982)et al.Int. J. Solids Struct.
(1983) - et al. et al.
- et al.
- et al.
J. Am. Ceram. Soc.
(1967)
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Constructing a novel nano-TiO<inf>2</inf>/Epoxy resin composite and its application in alkali-activated slag/fly ash pastes
2020, Construction and Building MaterialsCitation Excerpt :One is that the composite could absorb a certain amount of energy induced by the load via plastic deformation, and another is a toughening effect known as a typical crack deviation mechanism [72]. Crack deflection mechanism typical for ceramic matrix composite enhanced by particles, e.g. TiO2, may also exist which leads to a slow crack growth and propagation [73,74]. Moreover, it has been reported that the formation process of some natural organic-inorganic composites resembles the geopolymer production [24].
A novel TiO<inf>2</inf>/Epoxy resin composited geopolymer with great durability in wetting-drying and phosphoric acid solution
2019, Journal of Cleaner ProductionCitation Excerpt :The nano TiO2 may also play an important role in improving the tensile strength because of their rigidity and improved stiffness (Prasad et al., 2018). On the other hand, the composite was likely to limit the growth and propagation of tiny cracks based on two mechanisms, a toughening effect which is known as typical crack deviation mechanism and crack deflection mechanism (Boccaccini et al., 1997; Monette and Anderson, 1993; Swain, 1989). The degradation depth of the two binder mixtures after exposure to the two regimes is shown in Fig. 8.
Fire resistant melamine based organic-geopolymer hybrid composites Dedicated to Prof. Raffaele Cioffi on the occasion of his 60<sup>th</sup> birthday.
2015, Cement and Concrete CompositesCitation Excerpt :It is also worth pointing out that, if we compare the neat geopolymer (Fig. 5A and B) with the hybrid composite specimens (Figs. 5C–F and 6A and B) it can be easily observed that the number and the extension of the microcracks, that characterize the fracture surface of the geopolymer specimen, is strongly reduced by the addition of the organic resin. Therefore, the presence of the resin particles seems to prevent the cracking growth and propagation thus improving the mechanical properties and enhancing the fracture toughness of the brittle inorganic matrix by means of a sort of crack deflection mechanism typical of particle reinforced ceramic matrix composites [49,50]. As a final point, Fig. 7 shows the SEM images of GEO-Mel20 and GEO-MelAptes20 hybrid composites after thermal treatment at 800 °C for 24 h in air.
Novel hybrid organic-geopolymer materials
2013, Applied Clay ScienceCitation Excerpt :Therefore, in agreement with what observed by DMTA analysis (described in Section 3.2.2) and with the compressive strength determinations (described in Section 3.2.5), the resin seems to prevent the cracking growth and propagation improving the mechanical properties and enhancing the fracture toughness of the brittle inorganic matrix. As a matter of fact, a sort of crack deflection mechanism typical of particle reinforced ceramic matrix composites could be expected to occur (Boccaccini et al., 1997; Monette and Anderson, 1993). Finally, Fig. 6d and d′ show the images of a specimen of hybrid I after thermal treatment at 800 °C for 1 h.
Geopolymers prepared from DC plasma treated air pollution control (APC) residues glass: Properties and characterisation of the binder phase
2011, Journal of Hazardous MaterialsCitation Excerpt :The results suggest a toughening mechanism based on crack deflection [39] as previously proposed [13]. Cracks are forced to change direction when they encounter APC glass particles, and this crack deflection mechanism is similar to that reported in particle reinforced ceramic matrix composites [38,40]. The particle reinforcement associated with the un-reacted APC glass particles is considered to be particularly effective because the bond between the APC glass and the complex geopolymer matrix is expected to be very strong as they both originate from the same material.
Production of geopolymers using glass produced from DC plasma treatment of air pollution control (APC) residues
2010, Journal of Hazardous Materials