Ceramic macro-needles incorporation as reinforcement in commercial refractory castable was studied. (Ø2x20 mm) were made from kaolinite clay and gibbsite to obtain mullite the main crystalline phase. Specimens with ceramic evaluated by compression after being treated at two temperatures (815 1400 °C). The results compared those obtained using same concrete but reinforced steel fibers without re...

The work of fracture refractories is commonly calculated from crack mouth opening displacements (CMODs) in wedge splitting tests (WSTs). This paper proposes a methodology for estimating the energy notch displacement (NOD) measurements, which useful setups where CMOD not accessible. NODs and CMODs are both faces two WSTs experiments on castable refractory via digital image correlation (DIC) fini...

A tensile split Hopkinson bar apparatus is developed for testing high strain rate behavior of glass-filled epoxy. The apparatus uses a specimen gripping configuration which does not require fastening and/or gluing and can be readily used for castable materials. Details of the experimental setup, design of grips and specimen, specimen preparation method, benchmark experiments, and tensile respon...

Acid etching and filled acrylic materials have been generating great interest in the past few years because of increased public demand for esthetic restorations and alternatives to amalgam. Composite resin and ceramic inlays, which use adhesive bonding, were introduced to make possible toothcolored restorations. The physical properties of composite resin restorations, and their poor wear resist...