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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 I regret to say The forum in question seems to be no longer active.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...

Thanks to all for the comments, what about the measurements (this method also needs correlation) by gamma ray i.e. the nuclear method? Is there any possibility to perform the test- and regarding the available apparatus- in deep depths? Regards cmorgh

Hi again, Please exclude the down-the-hole or cross hole tests.

Hi to all, I appreciate any comments on insitu methods regarding the direct measurement of soil natural density in deep depths, where no field density test- say by sand bottle- is practical. Please note that I do not mean indirect estimation by correlation of SPT or CPT values. Regards

Hi, Receiving any reference and / or papers regarding the topic: "Practical design procedures for block-type and wall-type improvement by DSM method" is kindly appreciated. I have access to the book "The Deep Mixing Method, Principle, Design and Construction", by CDIT, Japan. It is a very useful...

Thanks all Regards cmorgh

Hi to All, There is a site the soil texture of which is unsaturated hard clay. Bored-and-cast-in-place concrete piles are designed for heavy loads. At the same time the risk against saturation of the site is being taken into consideration by designing the same pile type using the undrained shear...