RockDefTUD

Christmas came early this year ! A new saw for the more fragile rocks 😍😁

Thousands of students and teachers rally for higher education - Delta More than seven thousand students, lecturers and researchers gathered in Amsterdam on Tuesday to demonstrate against the budget cuts on higher education. The participants in the demonstration marched ...

More than seven thousand students, lecturers and researchers gathered in Amsterdam on Tuesday to demonstrate against the budget cuts on higher education.
‘Don't forget us,’ say representatives to the parties forming the new government. ‘Not everything is about immigration, defence or housing.’

Coupling Neutron and X‐Ray Imaging of Fluid Mixing and Precipitation in Rocks: Challenges and Opportunities We used coupled 4D neutron and X-ray imaging to study fluid mixing and calcite precipitation in basalt Neutron imaging can image the mixing of various aqueous solutions in porous basalt during fl...

So what can you do when shooting with neutrons at rocks, look at this cool publication by the Norwegian team at NJORD! Mixing and precipitation can be shown in real time agupubs.onlinelibrary.wiley.com/doi/10.1029/...

*MilaD...

The Effect of Pressurization Rate and Pattern on Injection‐Induced Seismicity in Highly Permeable Sandstone: An Experimental Study Laboratory investigation of the effect of pressurization rate and pattern on fault slip behavior A high pressurization rate may lead to a sudden decrease in effective normal stress, resulting in ...

Well done Milady! Another one of Milads PhD papers has been published. Curious how fluid pressure affects fault slip in permeable sandstone? Check it out here dx.doi.org/10.1029/2024...

Merry Sinterklaas! Our end-of-year lunch came early this year 🥰

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Yesss! Absolutely 🤓 I didn't realize you guys were hanging out in digital space. Hello! 👋👋👋

Going home. Thanks for all the inspiring science @epostcsah.bsky.social and @rocklabstrasbourg.bsky.social 🤓 #breaking rocks #rocks!

On my way to Strasbourg, to visit @rocklabstrasbourg.bsky.social and to connect with the @epostcsah.bsky.social community. I got to admit, traveling per train beats the plane by a mile! Better views, better seats, better WiFi. Now if there wouldn't be any strikes on the way... It would be perfect

Excited to be back at PSI with the crew from Njord to shoot with neutrons and X-rays at rocks to investigate flow and precipitation in basalts

Five CEG researchers receive Vidi grant No less than five researchers from our faculty will receive a Vidi grant this year. The Dutch Research Council NWO awards the grants to successful scientists to give them a helping hand in further dev...

Anne Pluymakers got a #Vidi grant from Dutch #NWO to investigate why different fluids make limestone break in a different way, and to see if we improve our acoustic and electromagnetic monitoring for #geothermal energy and #ccs... And so our team grows (a bit) 😁🤓 www.tudelft.nl/en/2025/citg...

*Krak!* In case you think salt always flows.....in Jops PhD project it is all about breaking salt. And it does so quite nicely, if you push it enough!

Shihao is on a roll! Last week he presented in Beijing, today in Cyprus... And in between he submitted the final draft of his PhD thesis to the Graduate School! 😎🤓😁😁😁

PhD candidate Jop is crushing it! Trying out how mechanically homogeneous and repeatable the homemade salt rocks are 😁

Hydrogen solution exposure at a seasonal timescale does not affect the geomechanical properties of clay-rich sandstones Scientific Reports - Hydrogen solution exposure at a seasonal timescale does not affect the geomechanical properties of clay-rich sandstones

Sometimes you mechano-chemically torture rocks and not much happens... But still good to know! Check out our new publication to see that 6 months exposure to H2 did not change the mechanics of these sandstones... www.nature.com/articles/s41...

Applicability of ultrasonic measurements to monitor and forecast stress change in subsurface storage applications The global expansion of subsurface CO₂ and hydrogen storage, alongside geothermal energy development, offers promising pathways for gigaton-scale CO₂ …

Check out our new publication, by Debanjan Chandra, Lujain Alghannam and Auke Barnhoorn, on how sonic velocity can be incorporated into a traffic light system in subsurface storage systems www.sciencedirect.com/science/arti...

Applicability of ultrasonic measurements to monitor and forecast stress change in subsurface storage applications The global expansion of subsurface CO₂ and hydrogen storage, alongside geothermal energy development, offers promising pathways for gigaton-scale CO₂ …

Check out our new publication, by Debanjan Chandra, Lujain Alghannam and Auke Barnhoorn, on how sonic velocity can be incorporated into a traffic light system in subsurface storage systems www.sciencedirect.com/science/arti...

Ultrasonic response of a brine-saturated reservoir rock during coupled stress and fluid perturbation during liquid-CO2 injection CO2 injection into porous sandstone reservoirs offers a promising pathway to curb anthropogenic carbon emissions, but poses risks of leakage and induc…

Check out this new publication on how fluid density changes the ultrasonic response to stress changes, by Debanjan Chandra and Auke Barnhoorn www.sciencedirect.com/science/arti...

Publications can be stuck in peer review for ever... And then all of a sudden there are three from the lab!

Disco-salt! This is a very salty day, meeting with PhD Jop on his salt project but also sitting in a national salt meeting talking about what's happening in salt. This salt block is standing in our lab post-lab-torture 😁 happy Friday all!

For those at the European #geothermal congress: go see @entelakane.bsky.social , in session 6F: Rock mechanics and petrophysics, Gartensaal 1A

3 months of failed attempts but finally some progress on pressing our own salt samples from NaCl powder #teamSalt not yet perfect but at least it doesn't crumble...

Effects of confined thermal cycling on sealants with different thermomechanical properties for CCS - Scientific Reports Scientific Reports - Effects of confined thermal cycling on sealants with different thermomechanical properties for CCS

Our former postdoc Kai Li started his new job at KIT Karlsruhe already in January, but nonetheless he has been diligently working on publishing his postdoc "Effects of confined thermal cycling on sealants with different thermomechanical properties for #CCS" www.nature.com/articles/s41...

It's basalt time! Working on a few samples for Njord Oslo, who invited Anne to join their trip to PSI in November to shoot neutrons at rocks again

Team Salt on the move! Brazilian disc testing with camera plus acoustics on healed samples fractured last spring 🤓😁

Tonight our team caught the last rays of the summer sun in the pretty area of Meijendel, near the beach 🥰

Former PD Debanjan Chandra is visiting from Norway to run experiments with an #EPOS-NL grant and he is explaining his new experiments whilst monitoring his stuff. Multi-tasking at its finest!

A first attempt at cold pressing our own salt samples, which will be baked afterwards for Jops PhD project. If anyone has any tips, we gladly take them!

Want to come break rocks with us? Or scan some of your pretty samples? Apply for #EPOS funding! epos-nl.nl/facilities/