Archived App (Last seen on 8 Jul 2026)
This is an archived listing of the app previously available on the App Store.Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.
About
This app is targeted to all Tunnel Boring Machine operators around the globe, using in particular the "Pipe Jacking" method, and for the job site management teams.
After you input the required values and press "Calculate", it will show the operator the total amount of bentonite he will use for the drive for lubrication purposes, and at what speed he should be pumping it at as he is advancing the TBM.
Job site management can use it to calculate in advance how much bentonite will be required for the drive/project.
Show more
What's New in Bentonite
1.1
February 17, 2023
Updates the "No. of beno bags in mix" input so now accepts decimal values (example 2.5) instead of just whole numbers.
