Revealing 3D orientation and strain heterogeneity in calcite generated by bio-cementation
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912963335553024 |
|---|---|
| author | Sarkis, Marilyn Ball, James A. D. La Bella, Michela Naillon, Antoine Geindreau, Christian Emeriault, Fabrice Detlefs, Carsten Yildirim, Can |
| author_facet | Sarkis, Marilyn Ball, James A. D. La Bella, Michela Naillon, Antoine Geindreau, Christian Emeriault, Fabrice Detlefs, Carsten Yildirim, Can |
| contents | Bio-cementation uses bacterially induced calcite to bind sand grains, offering a low-carbon approach to soil stabilization. However, the 3D morphology, orientation texture, and internal strain states of individual calcite bonds remain insufficiently characterized. Here, we combine computed micro-tomography, 3D X-ray Diffraction (3DXRD), and Dark-Field X-ray Microscopy (DFXM) to nondestructively characterize grain morphology, crystallographic orientation, and both type II (intergranular) and type III (intragranular) elastic strains in calcite formed at sand-sand contacts during bio-cementation. Tomography establishes the sample morphology and the cemented contact architecture; 3DXRD provides grain-averaged orientation and strain states; and DFXM resolves sub-grain misorientations and localized strain concentrations generated during growth with 100 nm resolution. The combined results show that calcite precipitation through bio-cementation produces anisotropic internal strain and distinct sub-domain structures that can influence bond integrity and load transfer at the macroscopic scale. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_11932 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Revealing 3D orientation and strain heterogeneity in calcite generated by bio-cementation Sarkis, Marilyn Ball, James A. D. La Bella, Michela Naillon, Antoine Geindreau, Christian Emeriault, Fabrice Detlefs, Carsten Yildirim, Can Materials Science Bio-cementation uses bacterially induced calcite to bind sand grains, offering a low-carbon approach to soil stabilization. However, the 3D morphology, orientation texture, and internal strain states of individual calcite bonds remain insufficiently characterized. Here, we combine computed micro-tomography, 3D X-ray Diffraction (3DXRD), and Dark-Field X-ray Microscopy (DFXM) to nondestructively characterize grain morphology, crystallographic orientation, and both type II (intergranular) and type III (intragranular) elastic strains in calcite formed at sand-sand contacts during bio-cementation. Tomography establishes the sample morphology and the cemented contact architecture; 3DXRD provides grain-averaged orientation and strain states; and DFXM resolves sub-grain misorientations and localized strain concentrations generated during growth with 100 nm resolution. The combined results show that calcite precipitation through bio-cementation produces anisotropic internal strain and distinct sub-domain structures that can influence bond integrity and load transfer at the macroscopic scale. |
| title | Revealing 3D orientation and strain heterogeneity in calcite generated by bio-cementation |
| topic | Materials Science |
| url | https://arxiv.org/abs/2603.11932 |