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عمران::
رطوبت کنترل شده
• Overexcavation and replacement with moisture-conditioned on-site soils
If nonexpansive fill is not available, the swell characteristics of the on-site expansive soils can be altered by moisture-conditioning and compaction control.
In some instances, chemical additives can be used together with moisture-conditioning.
In some cases, the upper 20 ft (6 m) of soil across an entire subdivision has been excavated, moisture-conditioned, and recompacted in place.
In this example, it is assumed that if the on-site soils are moisture-conditioned and recompacted, no expansion potential remains after recompaction.
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