My concrete slab appears blochy. Will this clear up?
- Ray Thursday, June 16, 2016 at 8:06 AM
Norm, the recommended water amounts listed on the products packaging are to ensure that end users do not over water the mix. A stiffer concrete mix is stronger than a soupy mix(AVOID A SOUPY MIX). Sometimes a little more water is necessary to achieve a workable mix. The key when adding more water, is to add a little at a time. Remember you can always add more water but cannot take it away.
Followed your instructions and must say it came out pretty good for a first time. But noticed amount of water the bag said to add was not enough.I had to add about a quart more per 3 50 lb. Bags
Grammanett, yes the material in both bags is the same just different quantities.
I see “80 pound” bags of Sakrete and “60 pound” bags. Are the contents the same formula, jut more of it in the 80 pound bag? There would not be any difference in the strength of a pad that uses one or the other?
Wendy, I would at least give a broom finish so that you will get more of a mechanical bond when you set the blue stone. I would still give it a pitch of 1/4″ per foot away from your house. Water that settles near your house can cause damage. So give it the pitch to avoid the water damage.
Hi, I have a few questions today! We will pour a 4″ slab for a porch to be covered with bluestone. Is finishing important in this case? Also if it is onle 4’3″ wide from house exterior, does it need a pitch? It will be covered by a roof but not for a while. Thank you!
Nancy, typically concrete dusting occurs from either overwatering or overworking the material or a combination of both. As far as a resolution to the dusting issue, you will need to grind the surface until you reach a solid, stable, and clean substrate. Then you could resurface the area with a concrete resurfacer to achieve a desirable finished look.
We poured an indoor pad for a room in our garage using Sakrete with an electric mixer. My husband has poured concrete before. After it has been dry for a couple of weeks, it continues to “make a fine dust” when you rub your foot across it. He put a sealer on it to no avail. You can rub up a pile of fine dust very easily. What has happened? What can we do? Thanks, Nancy