There are supposed to be regular testing of the concrete batches that would catch the issue before the bad concrete was in place. There is way more to this issue.
Exactly right. Slump tests among others are required and have to be certified when doing DOT or state work. I'm sure California is more strict than any other state regarding this. Someone was paid off.
Exactly my first thought. What the heck? Where was the general contractor oversight? Where was the city's engineer? Waaay more culpability here.
Excellent point. Here is OC, CA we had a delay on a Fwy project because when it was tested after pouring, it was found to be substandard. Like you said, there is WAY more to this than "we was dupped" which will be heard.
Bingo. Where were the test cylinders with certified breaks from a testing lab?
“There are supposed to be regular testing of the concrete batches that would catch the issue before the bad concrete was in place.”
The only testing is hardness which crushed concrete used as aggrigaate doesn’t affect.
What it does affect is the water absorbson which isn’t tested for.
When they first demanded that old concrete and left over redimix be reprocessed all the redimix companies were using it for aggigate and there were a lot of “hot” loads which were a bitch.
They no longer use it and it’s mostly used for base under roadbeads.