A new animated movie introducing the CHUM just added to our YouTube channel
We think it is an effective and very clear way to show the product
More about CHUM in the product page
A new animated movie introducing the CHUM just added to our YouTube channel
We think it is an effective and very clear way to show the product
More about CHUM in the product page
Erez I Amir. Piletest
Pile P20 is part of a sensitive project so just a few details can be disclosed at this stage.
The pile is ACIP (augered-cast-in-place) 1m diameter and 14m long
The pile was pre-installed with 4 CSL access tubes and was tested more than 5 days after casting.
CSL (Cross-Hole Logging) was performed using CHUM (Cross Hole Ultrasonic Monitor) manufactured piletest.com
Testing revealed a significant relative energy (RE) decrease and a matching first arrival time (FAT) increase in profiles 13 and 23, and to a lesser degree also in profile 12 (Images 1, 2)
Image1
CSL results – showing an anomaly at all profiles at the same level
Image 2
A zoom into the anomaly zone, profile 23.
The bars on the left indicate that at 10m both FAT is increased by > 20% and RE decreased by > 12dB
Although the data was tested by 1D CSL and the pile was equipped with just 3 access tubes, a 3D tomography was attempted and reveals the location of the flaw (image 3)
Image 3
A 3D tomography view of the anomaly at 10m, showing velocities lower than 2750m/Sec, higher velocities are transparent
Following the CSL results, the inspector ordered coring of the pile which confirmed the CSL results (Image 4) – The concrete at 10m was totally washed-out leaving just aggregates.
Image 4
Cores showing the defect
As this project is undergoing litigations, we thank the anonymous testing lab for sharing this information with us.
Familiar with the “Waterfall” presentation?
Ever wondered what those funny lines represent?
This short technical note will answer some (or all) of your questions
We liked this surreal and colorful picture showing CHUM CSL testing so much we just had to share it with you 🙂
By the way – just by looking at the size of the cable heap you can guess how massive this pile is…
— Picture credit to MD. SHAMSUL ISLAM from Prosoil, Bangladesh