Proctor correction
Proctor correction
(OP)
Hello
I used a French method in order to take into account the oversized aggregates greater than 20 mm . The material is a composed of gravel and sand 0/40 mm . The calculated modified proctor dry density is 2.14 t/m3 and after the correction the dry density is 2.45 t/m3. My question is the corrected value reasonable ?
I used a French method in order to take into account the oversized aggregates greater than 20 mm . The material is a composed of gravel and sand 0/40 mm . The calculated modified proctor dry density is 2.14 t/m3 and after the correction the dry density is 2.45 t/m3. My question is the corrected value reasonable ?





RE: Proctor correction
RE: Proctor correction
RE: Proctor correction
@Okiryu - you need to be aware of the specific gravity of the materials you are dealing with. In Ontario, our typical modified Proctor maximum dry density is/was typically in the order of 136+/- pcf. When I moved to Vancouver, the values were in the order of 143 to 145 pcf. Different materials - different specific gravities.
RE: Proctor correction
RE: Proctor correction
RE: Proctor correction
Well the material is used as a base layer. 26% is the amount of oversize particles bigger than 22 mm or 3/4" i believe . i was just lost at the corrected value which seemed very unreasonable , so i asked this question.
Now i want to express another point : the subbase or natural soil under the sandy gravel is composed of silty sand , so if i compact the sandy gravel upon it , will it be correct to assume that most of the water will be drained because of the silty sand ? cuz i found maximum density for half the optimum water content !