I am a homemaker with no experience in this, we are building a stone patio. The contractor excavated the site and pored cement. There was no crushed stone or stone dust packed in. It rained the next day, the cement has a couple of small spots that held water longer than the rest of the area. Do we need to add more cement in those areas?

It is suggested not to use cement or sand to fill the joints and edge the patio. What should we use?

Your comments would be helpful and appreciated.