2024/12/02 by Alexandre Sac-Morane, Sac-Morane, Alexandre, Hadrien Rattez +3 · 1 citation
Engineering · #FOS: Physical sciences #Fire effects on concrete materials #Geophysics (physics.geo-ph) #High Temperature Alloys and Creep #Materials Science (cond-mat.mtrl-sci) #Structural Response to Dynamic Loads
paper · pdf · doi:10.48550/arxiv.2412.01775
openalex publication_date 2024/12/02 · openalex created_date 2024/12/05 · openalex updated_date 2026/07/28
Pressure-solution is a chemo-mechanical process, involving dissolution at grain/asperity contacts and precipitation away from them. It induces a compaction in time of rocks and sediments. The present study investigates numerically the impact of precipitation on the slowdown of creep behavior induced by pressure-solution. A recently published framework, called the Phase-Field Discrete Element Model, is carefully calibrated against existing indentation experiments and validated for other rate-limiting scenarios. It is shown that when precipitation is relatively slow, the slowdown of pressure-solution is due to a chemical mechanism (accumulation of solute concentration within the pore space), whereas, at fast precipitation, the slowdown is due to a mechanical mechanism (stress reduction at the contact).