Breakage of saline ice blocks in ice-to-ice contact

• Main Authors: Prasanna, Malith, Wei, Mingdong, Polojärvi, Arttu, Cole, David
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2021
• Subjects: Breakage mechanism; Force chain; Ice mechanics; Shear failure; Arctic
• Online Access: https://cris.vtt.fi/en/publications/35e74efa-734b-495c-b79a-4ac807a01e9a; http://www.scopus.com/inward/record.url?scp=85124148157&partnerID=8YFLogxK; https://www.poac.com/Proceedings/2021/POAC21-065.pdf

This paper focuses on the experiments on breakage of laboratory grown floating saline ice blocks in ice-to-ice contact. Insight on breakage is required in modeling force transmission through an ice rubble pile, since it occurs through so-called force chains, which may collapse due to buckling or the failure of individual ice blocks within the chain. In the experiments, 300 × 300 × 110 mm 3 ice blocks were set to float, brought into contact to form ice-to-ice contacts, and compressed up to failure. The force transmitted through the contacts and the failure process were recorded. It was concluded that the shear-like failure of the blocks limited the contact forces, as it occurred in about 75% of the 32 experiments performed.