Remoulding sample procedure
Remoulding sample procedure
(OP)
Hi all,
I have to carry out a direct shear test on remoulding samples. Is there any standard procedure for remoulding a soil sample in order to achieve similar moisture content and load history to it have in the field.
Thanks
Regards
Pietro
I have to carry out a direct shear test on remoulding samples. Is there any standard procedure for remoulding a soil sample in order to achieve similar moisture content and load history to it have in the field.
Thanks
Regards
Pietro





RE: Remoulding sample procedure
RE: Remoulding sample procedure
but how may I pratically do it? Dry the soil, add a specific quantity of water to reproduce the moisture content, right? What about the density? I read that it is also necessary to consolidate the soil specimen in order to reproduce the same load-history, but whith which load? The vertical stress it had the specimen in the field before sampling?
RE: Remoulding sample procedure
RE: Remoulding sample procedure
RE: Remoulding sample procedure
@Ron: How to compact it to achieve the same density?
@Oldestguy:well, I want to remould some sample to carry out the direct shear test and the triaxial test. The type of soil is 40% clay, 40% silt and 20% sand.
RE: Remoulding sample procedure
What's the intent of the strenght value? So, if you have a plastic clay or silt and you are building earthworks for long-term performance, there could be a chance of softening. To mold a sample for fully-softened shear strength, take the soil and hydrate it to the liquid limit, place the, "Mud" into the DDS machine and add incremental normal load to form a normally-consolidated sample in the DDS machine that's under the target effective stress for your design ranges.
If youa re looking to design for residual strength, just shear to failure or shear to failure over and over again. For residual strength, the normal load is a factor, but the compaction effort is unlikely to affect strength.
It's hard to add much more, because I'm not sure of your project and I'm not even sure, I'd be using a DDS for your data objectives.
f-d
ípapß gordo ainÆt no madre flaca!
RE: Remoulding sample procedure
RE: Remoulding sample procedure
RE: Remoulding sample procedure
RE: Remoulding sample procedure
RE: Remoulding sample procedure
RE: Remoulding sample procedure
RE: Remoulding sample procedure
RE: Remoulding sample procedure
RE: Remoulding sample procedure
The hammer blows may represent the same soil history.
RE: Remoulding sample procedure