Improving the Flexural Strength Test of Brushite Cement

Key Engineering Materials 2015
Sahin Altundal, Kārlis-Agris Gross, Caroline Ohman, Hakan Engqvist

In the investigation of mechanical properties, calcium phosphate cements exhibit large sample-to-sample deviation due to its porous nature, possibility of un-homogenous distribution and small specimen size. This situation generates difficulties for obtaining accurate results and creates an obstacle for testing different composition where only a small batch size is available. In this respect, specimen shape, whether being injected, porosity ratio, surface quality, bearing support design have significant matter on variability in terms of three- and four-point bending test. Therefore, different methods have been studied to reduce variability with a simpler material preparation than common methods on injected and moulded cement. The entire comparison is made with the consideration of three- and four-point bending testing, the eccentric loading error calculation with engineering calculation software “Mathcad 15”, porosity measurement with Archimedes method, microstructure investigation on Scanning Electron Microscope (SEM), macroporosity distribution measurement by Micro CT Scanner.

Atslēgas vārdi
Error possibilities in bending test, Weibull effective surface, Weibull effective volume, bearing support design, effect of cement injection
DOI
10.4028/www.scientific.net/KEM.631.67
Hipersaite
http://www.scientific.net/KEM.631.67

Altundal, S., Gross, K., Ohman, C., Engqvist, H. Improving the Flexural Strength Test of Brushite Cement. Key Engineering Materials, 2015, Vol.631, 67.-72.lpp. ISSN 1013-9826. e-ISSN 1662-9795. Pieejams: doi:10.4028/www.scientific.net/KEM.631.67

Publikācijas valoda
English (en)