Results of three-point bending tests on notched beams cast with three alkali-activated mortars that differ by the type and size of the aggregates are presented. Digital image correlation is used to estimate the size of the fracture process zone. The fracture energy is computed by means of the work-of-fracture method and found to be strongly dependent on the type of aggregate used and does not differ whether the LDVT or DIC load-deflection curves are used. Finally, low values of the fracture energy in alkali-activated mortars might be associated with the presence of unreacted fly ash.

Use of digital image analysis to determine fracture properties of alkali-activated mortars

Baietti G.;Quartarone G.;Carabba L.;Manzi S.;Carloni C.
;
Bignozzi M. C.
2020

Abstract

Results of three-point bending tests on notched beams cast with three alkali-activated mortars that differ by the type and size of the aggregates are presented. Digital image correlation is used to estimate the size of the fracture process zone. The fracture energy is computed by means of the work-of-fracture method and found to be strongly dependent on the type of aggregate used and does not differ whether the LDVT or DIC load-deflection curves are used. Finally, low values of the fracture energy in alkali-activated mortars might be associated with the presence of unreacted fly ash.
2020
Baietti G.; Quartarone G.; Carabba L.; Manzi S.; Carloni C.; Bignozzi M.C.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/812243
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