Lateral eath pressure in compacted soil.
Lateral eath pressure in compacted soil.
(OP)
Hi. Looking for some information on how to calculate the added horizontal earth pressure from compacting the soil. All literature suggest an increase in stress, but non suggest how to calculate it. Installing a load-cell on a buried wall and experimenting with different level of compaction, soil types and water content would give a useful chart.





RE: Lateral eath pressure in compacted soil.
There is a relationship between K0 and OCR:
K0,OC = K0,NC.OCRsinφ' (can't remember the reference - please check)
Where:
K0,OC = K0 corrected for overconsolidation
K0,NC = K0 for normally consolidated soil = 1 - sinφ' (Jaky, 1944?)
OCR = overconsolidation ratio = (σ'v0 + Δσ'v)/σ'v0
σ'v0 = initial vertical effective stress
Δσ'v = additional vertical stress
With an increase in OCR (due to additional vertical stress) you get your change in K0. Using K0 = σ'h/σ'v you'll be able to get your new σ'h (which is the radial effective stress).
RE: Lateral eath pressure in compacted soil.
RE: Lateral eath pressure in compacted soil.
RE: Lateral eath pressure in compacted soil.
RE: Lateral eath pressure in compacted soil.
Oldestguy is correct in compactors against retaining walls. We always specified no closer than 5 ft for a 10 to 15 vibratory compactor. Use of small 1-tonne tag-alongs from this point towards the wall.
I've seen mortared masonry (stone) walls crack along the horizontal joints when the Chinese contractor didn't respect the distance caveat.
RE: Lateral eath pressure in compacted soil.
The discussion at office has been whether the effect of compaction with give during the design lifespan.
RE: Lateral eath pressure in compacted soil.
RE: Lateral eath pressure in compacted soil.