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-   -   we are extending our driveway but a small part of the area is spongy (http://www.diychatroom.com/f19/we-extending-our-driveway-but-small-part-area-spongy-83498/)

pinu 10-09-2010 08:35 PM

we are extending our driveway but a small part of the area is spongy
 
we are extending our driveay but we have observed that a portion of the area is spongy, what can be done to fix the sponginess before we asphalt it

stuart45 10-10-2010 06:13 AM

The first step is to find out the cause such as a leaking drain etc.

Daniel Holzman 10-10-2010 10:21 AM

Spongy ground is often an indication of usuitable soil underneath, such as organic material, saturated loose silt, debris, or a stump pile. You need to dig up the unsuitable soil (if that is the problem) and replace it with suitable material, which consists of crushed stone, coarse sand, or sand/aggregate mix, placed and compacted.

jomama45 10-10-2010 12:50 PM

Dig out the bad fill as Dan stated, and typically we would replace with dry, absorbant base material like crushed concrete or fractured limestone. Both are readily available here and soak up alot of moisture before becoming unstable.


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