The condensation is probably the curing of the concrete, whether the operator added too much water or not. You may also consider sealing the crawlspace from the outside, and eliminating the hot humid air in the summers. Condition the air in the crawl with your HVAC system and maybe a dehumidifier, the same as you would in a basement. Sprayed polyurethane foam on the foundation will help you do this, and you'll save on heating bills in the winter, as well. www.crawlspaces.com