Recent content by cmorgh

Hello all, I have a question (geotechnical engineering) regarding Armor grading based on CIRIA C683. I'm involved in some armor grading issues (as an example 60 to 300 Kg). The grading is done based on weighing around 250 samples. It seems that M50 is calculated as the average weight of all...

Dear GeoPaveTraffic and dear TDAA, Thank you very much for your cooperation. I have the same idea, but the point is that by sketching the three points, you may fit a line fairly suitable for the 3 points. The point is that the line shows negative cohesion (all the 3 points fairly coincide on the...

Hi. To investigate the friction between concrete and rock in a project insitu direct shear test was performed which consisted of 3 blocks and each block was assigned to a specific normal load. The concrete blocks were cast in place as 70 x 70 cm in plan and 30 cm in height. The normal loads were...

BigHarvey You are right. Lugeon is expected to be performed in rock, whilst lefranc is expected to be performed in alluvium. However, consider that the alluvial layer is grouted now (Lefranc being performed prior to grouting). The layer is now different from alluvium and mostly similar to rock...

Thanks so much cvg, Done. Regards cmorgh

Hi, I am searching for a correlation between the permeability values obtained by Lefranc and Lugeon field tests. In other words, the permeability of a rock in Lugeon unit is calculated (upon completion of a Lugeon test) and the corresponding permeability in Lefranc method (i.e. say in cm/sec) is...

Hi To dgillette: Thanks for your care. I regret to say The forum in question seems to be no longer active. To blueoak: You are right. Lugeon is expected to be performed in rock, whilst lefranc is expected to be performed in alluvium. However, consider that the alluvial layer is grouted now...

Hi and Thanks Prior to posting in here, I had posted that in soil testing engrg. Thanks for your comment

Hi, I am searching for a correlation between the permeability values obtained by Lefranc and Lugeon field tests. In other words, the permeability of a rock in Lugeon unit is calculated (upon completion of a Lugeon test) and the corresponding permeability in Lefranc method (i.e. say in cm/sec) is...

Hi, I am searching for a correlation between the permeability values obtained by Lefranc and Lugeon field tests. In other words, the permeability of a rock in Lugeon unit is calculated (upon completion of a Lugeon test) and the corresponding permeability in Lefranc method (i.e. say in cm/sec) is...

Hi again, If using nuclear device, is there the posibility to lower the probe down to say 25 to 30 m? (regarding the technology of the test and related devices) The texture I am encountered with is rather non-cohesive. Hence, no traditional sampling would be useful. Regards

Hi, I am searching for some case histories regarding the use of the following improvement methods in dam foundation anywhere in the world: 1- Dynamic Compaction 2- Dynamic Replacement 3- Deep Soil Mixing (as cutoff element- preferably not as a rehabilitation / remediation case) 4- Preloading...

Thanks All, Regards Cmorgh

Hi, Generally you can apply DSM in such a texture. I have been engaged with fairly similar project though that was mostly the protection for a deep excavation in an area having silty sand (saturated) texture. Steel H piles were also inserted into the DSM columns with waling and anchorages. DSM...

Hi, Some test piles have been statically tested both axially and laterally. About Axial Loading Test: The final settlement for the most of the axial loading tests exceeded 30 mm. At this stage, the settlement criteria for the piles have yet to be specified, however for two different areas the...