![]() ![]() With low plasticity silty type materials you can use the Linear Shrinkage(LS) to give a very good estimate of the PI by the equation PI=2*LS. The plastic limit can never equal the liquid limit. to sit down and reread their test methods. ![]() Many technicians believe that they have to roll it down to 1/8" first and then get it to crumble, it would pay those techs. The 1/8" limit is just an end game figure so that if you get down to 1/8" without any crumbling then the material should be remoulded into a new thread and then rolled back down again. As for the 1/8" d, if the thread crumbles before it reaches 1/8" then it is considered at it's plastic limit when it starts to crumble, provided that the crumbling is due to moisture loss and not due to presssure from your hand or from laminations coming from the remoulding process. Your material does sound like it is quite silty however the only way to classify it as a silt is by the use of hydrometer analysis. Obtaining a plastic limit from a low plasticity material requires quite a deal of experience on the part of the technician. The atterbergs can give you an idea of something that may be expansive, however the actual determination should be left to the shrink/swell test. ![]() Hi, well first up the atterberg limits should not be used to determine the reactivity of a soil. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |