Exposing the aggregate on the new concrete pad. This pad was created to stop the boat trailer sinking into the drive way and stop the trailer support blocks sinking during the winter period. One of the problems i had was on the day we poured the wind dried the concrete very quickly which in did not give me time to get the retarder on quick enough. It took a bit longer than normal to expose the aggregates due to this problem. It still turned out okay in the end