New answers tagged concrete
That is Efflorescence. Harmless, just looks bad. It's not a spill, just minerals from the concrete crystallizing on the surface of the concrete. This is very normal and when it is humid, not much can be done about it. Just wash it off when you notice it.
Steel shims if shimming steel and concrete - either with holes that you bolt through, or tack weld them in place. To the extent that you can use "fewer, thicker" shims rather than more thinner ones, do that. Paint, galvanizing, or "cold galvanizing" (zinc-loaded paint) may be advisable to limit/reduce rusting over time. The other solution, though it's not ...
Cured concrete is a chemical brew. When concrete is setting, it doesn't just dry out. There is an exothermic chemical reaction going on. Go put your hand on it. It'll be warm (or hot, depending on how thick the pour is). My point is that if you were to mix latex (rubber) into the concrete mix to color it, you would be interfering with the chemistry and ...
I think that you should call an experienced mason to come and have a good look at it all. There are too many variables at work here, and a foundation is too large (and important) a structure and system to summarize with a few photos and a brief description. I don't know that you're going to get a helpful or realistic answer from us.
well, chipped all the tile up in my home OMG. So now the thinset, I found a rental tool at homedepot .Its a floor buffer and you put this round buffer with teeth and it removes thinset.DUST but fast. and yes you can go over thinset just make sure it not loose. have fun ;)
Will the drylok work? Maybe with minimal water. What you need to do though is get gutters on your house or regrade your landscape. Or both. If water is draining under your slab there is nothing you can do to keep it from coming up through the floors.
Rent a concrete saw, make cuts more than halfway through it (preferably within an inch of the wooden floor) in a grid pattern, insert prybar in cuts, break chunks loose. Once you get the first chunk out, pry towards the hole.
It is virtually impossible to specify the proportion of water in a concrete mix due to the wide range of moisture content in the sand used, Regarding "old" cement powder - if kept completely and utterly dry it will work fine after literally years. The only downside of using old cement is that the Chromium additives change from relatively harmless to ...
You are really brave to finish a basement with a known moisture issue. I for one wouldn't spend a penny on finishing my basement until I have seen it go through a wet season without failing. Not telling you to stop but would warn to slow down. Get your framing/electric/plumbing/whatever done and let it go through at least 4-5 months before finishing ...
That is a major issues, especially on a new home. Call the developer. They have a right to repair it before you pursue legal options.
While you probably could, this wouldn't be a good way to try and match a color. It would likely effect the setting performance of the concrete and you'd never match the color of the paint. On top of everything else, it would be much more expensive than the alternatives - all you really need is the pigment and everything else that makes up the paint is ...
There is a method that can solve both of your problems. I’m not sure how to translate it in English but it is called something like "polishing up to a point of black gloss“. This method makes the concrete waterproof and also brings up the color like you wanted. Back in the past this is the way people made their floors waterproof. Basically you polish ...
If, after completely cured, the paint still exhibits the same poor adhesion characteristics, you will unfortunately have to scrape or strip all areas that are unsound (probably the entire coating). You must then properly prepare the surface (sand, sand, sand) then repaint.
Just use the plain cement. Mix water and cement and it should be half solid
The half inch stones aren't the problem. It was supposed to be 1:1 1/2:1. 1 cement 1-1/2 sand 1 gravel The concrete needs water - not too much - but should be a moderate amount for it to make the cement react rapidly.
This problem is termed as concrete spalling. You can fix it without replacing the entire driveway. Before you begin it’s important to power wash the surface. Use a stiff broom to brush the entire surface. Shop for a cleaner concentrate easily available at a hardware store. Next, inject your concrete into the injection hole. You must not go over 40 psi. If ...
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