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swelling of clay because of lime stabilization

swelling of clay because of lime stabilization

swelling of clay because of lime stabilization

(OP)
WE ARE REMOVING AND REPLACING PARKING LOT PAVEMENT OVER A CLAY SUBGRADE.
THERE IS A NEED FOR LIME STABILIZATION. THE CONTRACTOR WANTS TO CHARGE US FOR REMOVING OF EXCESS OF CLAY RESULTED BY LIME MODIFICATION TO A DEPTH OF 12" USING UP TO 5% CALCIMENT.
HOW TO DETERMINE THE VOLUME OF THE SWOLLEN SUBGRADE?

RE: swelling of clay because of lime stabilization

The recompacted dry density of lime modified clay will be less than that of non-modified clay.  To establish the volume difference, have a soils lab perform moisture-density relationship on samples of A)native, and B)native soil mixed with the specified lime amount.  Comparing the 2 sets of results, you will be able to estimate the increased volume associated with lime modification.

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