Work

Intrinsic fracture energy of 3D printed cement mortar obtained from snapback behaviour in indirect tensile testing

Year: 2025

Type: article

Abstract: Dynamic and abrupt fracture are always the case observed in indirect tensile testing based on Brazilian discs. This dynamic and violent fracture challenges Brazilian disc testing for obtaining intrinsic fracture energy and tensile strength, as the energy is dissipated through not only the creation of new fracture surface, but also ejection of fragments. In this paper, the use of AUSBIT (Adelaide University Snapback Indirect Tensile test) for indirect displacement control allows stabilizing fracturing process to obtain quasi-static behaviour associated with snapback. Post-peak behaviour with snap-back can be successfully captured, allowing obtaining intrinsic fracture properties of 3D printed cement-based materials. Based on the results of load and displacements with good snap-back responses, the values of peak load are used for estimating the peak strength of the disc specimens and the fracture energy can be obtained from the area under load deflection curve. This preliminary result opens potentials to obtain intrinsic fracture energy of 3D printed cement-based mortar using indirect tensile testing.

Source: Procedia Structural Integrity

DOI: 10.1016/j.prostr.2025.06.052

Authors: Zili Huang, Giang D. Nguyen, Murat Karakus, Tung T. Tran, Ha H. Bui

Institutions: The University of Adelaide, Monash University

Language: English

Topic: Innovations in Concrete and Construction Materials

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: diamond

Funder: Australian Research Council