PSI - Issue 42

Available online at www.sciencedirect.com Available online at www.sciencedirect.com ^ĐŝĞŶĐĞ ŝƌĞĐƚ Structural Integrity Procedia 00 (2019) 000 – 000

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Procedia Structural Integrity 42 (2022) 133–138

23 European Conference on Fracture - ECF23 Fracture toughness of the shot-earth 772 Sabrina Vantadori a, *, Camilla Ronchei a , Daniela Scorza b , Andrea Zanichelli a , Andrea Carpinteri a a, a b i a r a

a Dept. of Engineering and Architecture, University of Parma, Parco Area delle Scienze 181/A, 43124 Parma, Italy b Dept. of Engineering, University of Naples Parthenope, Centro Direzionale Isola C4, 80143 Napoli, Italy

© 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 Abstract In the present research work, the fracture behaviour of a specific earthen material, that is, the shot-earth 772, is experimentally investigated. In particular, three-point bending tests on single edge-notched prismatic specimens of shot-earth are performed according to the RILEM Recommendations. Then, by exploiting the experimental results, the fracture toughness is analytically determined by means of the Modified Two-Parameter Model, which allows us to take into account the possible crack deflection, typically observed during the stable crack propagation in quasi-brittle materials. © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of 23 European Conference on Fracture - ECF23 Keywords: earth construction technique; fracture toughness; kinked crack; shot-earth 772. 1. Introduction It is well known that the construction sector is one of the largest consumers of energy in the world, and is responsible of 23% of the global carbon dioxide (CO 2 ) emissions (Huang et al. (2018)), due to both the manufacturing and transportation of raw materials and the construction phases. Therefore, the development of eco friendly alternatives for the building industry has nowadays attracted the interest of architects and engineers. Among such eco-friendly alternatives, the techniques exploiting natural and locally available materials (such as the excavated soil) seem to be the most promising ones. As a matter of fact, the reuse of the excavated soil as a building B.V. s

* Corresponding author. Tel.: +39-0521-905962; E-mail address: sabrina.vantadori@unipr.it

2452-3216 © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of 23 European Conference on Fracture - ECF23

2452-3216 © 2022 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the scientific committee of the 23 European Conference on Fracture – ECF23 10.1016/j.prostr.2022.12.016