Add just enough water to 5 cups of baking soda to make a thick paste. Use more baking soda or water if you have a large area to clean.
Spread the paste over the area on the cement that smells like kerosene.
Scrub the paste into the cement, and let it sit for several hours until it is completely dry. As the baking soda dries, it will absorb the smells from the cement.
Sweep up the baking soda and throw it away.
Push your shovel down into the dirt at least 2 inches from the border of the kerosene spill. Continue around the kerosene spill until you've created a border around it.
Dig a hole using the border as your guide. The hole should be 2 feet deep. Throw the soil into a wheelbarrow.
Discard the soil.
Smell the hole to check for a kerosene smell. Continue digging deeper if you can still smell kerosene. Throw away any contaminated soil.