Is this concrete bad?
This is a residential foundation wall poured the day before. The forms have just come off and it looks dry and crumbly.
https://www.flickr.com/photos/[email protected]/13168643273/
Heavy dusting occurs when I brushed my fingers across it. My sub said that he had heard about dusting like this but had not seen it. No slump test was performed but the sub said that he estimated that it was about a 5inch slump. The crew had done extensive troweling on other parts of the wall and after I snapped this picture and was looking at those other parts of the wall they skimmed over this area too. The weather the day of pouring was 69-47 and the weather this second day was 74-50. What may have caused this bad looking concrete, and should I accept this work.
Thanks for helping me with this question.
This is a residential foundation wall poured the day before. The forms have just come off and it looks dry and crumbly.
https://www.flickr.com/photos/[email protected]/13168643273/
Heavy dusting occurs when I brushed my fingers across it. My sub said that he had heard about dusting like this but had not seen it. No slump test was performed but the sub said that he estimated that it was about a 5inch slump. The crew had done extensive troweling on other parts of the wall and after I snapped this picture and was looking at those other parts of the wall they skimmed over this area too. The weather the day of pouring was 69-47 and the weather this second day was 74-50. What may have caused this bad looking concrete, and should I accept this work.
Thanks for helping me with this question.