For those of you with the experience is there an alternative or common household items that I could use to replace concrete surface retarder? I do not have access to any in my area and am I need of something that I can use instead.
@Ron
Your feedback has been very insightful. One comment I do have is that during the finish process the finishers have not done any of the above. They did not use any water to wet up dry spots or use powder to dry up wet spots. I find it hard to believe that it was indeed a finish issue...
I've done the chain drag test and it is isolated to just those areas. What confuses me is that its so isolated. These pictures are as bad as it gets the majority of these areas are reduced down to silver dollar size though.
If it is indeed a finish issue, why is it just isolated to like 2-3...
@dik
I did a small amount of reading on chert. If it were chert there would be a larger piece of pop out? Am I understanding correctly? When chert occurs the surface along with the aggregate end up popping out, at least that is what I gathered.
That is interesting. So the pop outs I'm facing typically are visible within the next couple days after placement and only 1/8" thick of peeling is occurring
Hello all,
Not sure how many of you are familiar with finishing concrete slabs but I have a dilemma that has yet to be solved.
We have poured several slabs in this project and unfortunately they have not gone as planned. The first interior slab we poured was a metal deck and we had small silver...
That’s exactly what I have been doing. They sent out an RFI to get “clarification” from the EOR and they came back clarifying that the additional bars does indeed go in tandem with the typical mat detail. Thank you all for providing me with your insight.
Hello all,
As previously mentioned in my previous posts I am still learning about reinforcement in concrete. In my current project we are constructing concrete metal decks.
My dilemma is that in certain area of the metal there are openings and in the drawings it calls out for added...
I not familiar with triple blend mixes. Nor have I heard of anyone using triple blends. Can you provide an example of a triple blend and the pros and cons of using such mix design?
This is something I'm looking into personally. I've read a couple research reports that have been uploaded on the internet. All of them pretty insightful for the most part. One that has piqued my curiosity is CO2 injection into concrete. Have you had any experience with this? And with the use of...
Recently in my area we have been having issues getting ready mix concrete. At first they said it had to do with a cement shortage more recently it has come up that the plants are experiencing issues with their flyash deliveries. Keeping in mind that flyash will not be around forever due to the...
Thank you all for the feedback. Although we were only looking for 5000 psi the product specs called out for an 8400 psi @ 28 days so they considered that the grout failed in terms of not achieving its strength @ 28 days.
Apparently it was more than a couple bad samples. 28 day samples were recently tested and they also came back at less strength than expected. Probably too much water was added into the mixture. Thanks for the feedback though.
I'm fairly new to the concrete industry and there is still a lot I'm learning. One thing that I have ran into recently is that the strength in the non shrink grout that was sampled went backwards as opposed to forwards. @3 days it was stronger than @7 days. Is this an anomaly or does it happen...
