As the temperature is over 15 degrees, we need to take care that the slab does not dry out too fast. We have kept it covered with the geotextile membrane, which we wet down a minimum of 3 times a day. The geotextile retains the moisture, and helps to keep the slab cool. Being white, it also helps reflect some of the sunlight. We will do this for about 1 week - 10 days.