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Has anyone painted old concrete portland cement?
A cement question for Artists and Old Pros: I have an old cement driveway at a property built in 1952. It's 15'x22' as a single piece without partitions. I patched the cracks with RapidSet Cement All which works great but dries white. Now I want to cover the white patches with something that blends everything together to the basic color of fresh cement. --- I bought some boxes of Quikrete Driveway Resurfacer that has bonding polymers and goes on with a squeegee. It's requires broom texturing in 5 minutes and it's total working time is only 20 minutes. I'm afraid that I can't work the whole driveway with 4 boxes of Quikrete resurfacer before it sets. --- So, as an alternative, I was thinking about mixing pure portland cement with water to the consistency of paint and simply brushing it on dampened concrete. My only purpose is to hide and blend the patches. Cheap and done with no 1/8" layers of multiple pours to try to feather or broom-stroke together. Does anyone have experience with this? This was the beginning of the patch process. I feathered everything with a sponge trowel, so it's good now for a final finish to get rid of the white patches. Jun 26 14 05:49 pm Link I don't think straight up portland would work, it needs an aggregate like stone or sand mixed in. I assume the product you have is similar to top-n-bond? As a side note buy an extra bag or two if you go this route just in case. https://www.youtube.com/watch?v=lkl3bY7Z88k There are driveway paints and concrete stains, but you'd probably want something textured if you want a uniform look at this point. Jun 26 14 05:51 pm Link JJMiller wrote: I'll look up that name. Jun 26 14 05:56 pm Link Jun 26 14 05:58 pm Link I added a video link ^ I don't know how much a pro would charge, but it may be worth it in the long run- especially if you've never done something like this before. Surface preparation on a job like this is huge no matter what you decide on. It gets to the point where you spend $100 now and it lasts a couple of years, or spend $500 and it lasts for 20. Then again the winters here are more destructive so I may be biased This has a longer working time http://www.homedepot.com/p/SAKRETE-40-l … /100671663 Jun 26 14 06:05 pm Link JJMiller wrote: I should add that this is a rental property and my university student tenants will quickly trash anything I do anyway. I'm looking for a basic C+ cosmetic cleanup. Jun 26 14 06:11 pm Link JJMiller wrote: Yes, I have watched that video carefully. That is a promotional sales video by Quikrete to sell that product. Jun 26 14 06:21 pm Link I have painted over concrete driveways in the past using thinned down cement & fine sand mix, it actually does a couple of things, 1) it evens out the color and 2) it adds a gripping surface so it becomes a little non slip type surface, the more sand in the mix, the more rough the texture, you may have to play with the mixture to get it just right. Jun 26 14 06:22 pm Link Have someone else mix the driveway resurfacer as you apply it and brush it out. (Alternate mix tubs may be needed at the ready if it starts to set in lumps, but if you are careful to keep mixing new product in evenly, probably not necessary.) That way the mixing and application process is spread out as a continuous process for as long as needed without sharp mixture changes. As long as the working time for the area you are actually working on is not exceeded everything should be fine. The packaging should define area coverage but assume those numbers are being "optimistic". Avoid direct sun and the heat of mid day. Google also --> acrylic concrete bonding agent example http://www.rona.ca/en/cement-acrylic-bo … 4595043--1 Cement Color (Liquid) http://www.quikrete.com/productlines/cementcolor.asp Jun 26 14 06:23 pm Link Split it in half? Leaves a line down the middle but at least it looks neat. Jun 26 14 06:23 pm Link Lohkee wrote: Yes, I like this one better because it's an independent source. Maybe. Jun 26 14 06:29 pm Link Leo Howard wrote: In contrast to all the new polymer based concrete products now, this is the kind of Old School first hand advice I was looking for. Jun 26 14 06:38 pm Link Jeffrey M Fletcher wrote: A possible option. Jun 26 14 06:42 pm Link Thank you all. Lots of good, concrete answers in this thread --- Found a list of customer reviews. The negative reviews make me want to return the material and try something else. The few 5 star reviews look like fakes to even out the disgruntled customers. http://reviews.homedepot.com/1999/20228 … eviews.htm No customer reviews at amazon. Jun 26 14 06:46 pm Link OK, on the positive side, I can vouch for RapidSet Cement-All as an excellent, fast setting concrete repair product. It can easily fill in chunks of missing concrete steps, holes in blocks, or down to setting anchor bolts in concrete holes or filling cracks. I like it so much that I'm going to try their RapidSet Mortar for chunks of scratch-coat that cracked off a cement block wall covered with stucco, and as a scratch coat to patch in around a pre-hung security door I recently mounted through a stucco covered 2x4 wall of a garage. https://www.youtube.com/watch?v=dm1eoiFF4F4 I also bought a box of RapidSet stucco patch for light surface stucco patch paint prep along the bottom of an exterior house wall. So many hobbies, .... so little time Jun 26 14 09:01 pm Link @ Click Leo Howard wrote: You can get really fine graded sand for the purpose. 80 grit, a screened graded sand, is used in the tile trade and is readily available, bagged. Mix that with ordinary Portland cement. To improve new to old bonding you might also use a liquid latex in the mixing water. Also readily available and used by the tile trade. Jun 27 14 03:16 am Link I'll bet that within a year or two the white will darken and blend in pretty well. Jun 27 14 03:31 am Link Simple cheap fix to make it all the same color. Buy one sack of mortar mix (the kind you just add water to) and then get the poly/latex admix (usually sold in the ceramic tile department). Use 1/2 and 1/2 water and admix in the mortar mix to make a thin (like paint consistency) mix. Apply it by shoveling globs onto the existing concrete and smooth it out into a very thin layer (1/16" or so) over the entire surface. One bag will go a LONG way at that thickness. It will make a no skid surface and everything will come out the same color. If you want to stain the concrete a color, perhaps an earth tone to make it more natural, it's easy, just add in some ceramic tile grout colorant to the mix when you mix it. The surface will wear naturally. The only drawback in my experience is if you make it too thick (like a 1/8" or more layer) it can crack and flake off over time. The trick is to keep the layer as thin as possible. Jun 27 14 10:17 am Link I have no need to resurface a driveway but I thoroughly enjoyed reading how to patch it without hiring a professional. Jun 27 14 10:53 am Link Painting a Portland cement (like) surface…. I am primarily an artist. I painted this mural, 29’x 9’, onto an old concrete block wall faced with a high-Ph cement stucco-like finish. http://2.bp.blogspot.com/-YcElNheXdwQ/U … er+008.JPG (from http://billyholcoutdoors.blogspot.com/2 … -park.html) The biggest problem with the surface was to neutralize the Ph of the wall itself. Solution: several good washes with a pressure washer (and a scrub brush) with baking soda added to the wash. Once that dried out in the Florida sun I applied several coats of Gesso. The wall was then ready to accept standard artist grade acrylic paint. Once the mural was complete (took me almost 3 months to complete the painting) I applied several coats of commercial grade polyurethane with a UV blocking agent added. What you see in the big picture is what the mural looks like 2 ½ years after I completed it. The wall is outside, open to all the elements of Florida weather…. and sun. So that’s how to add art to an external concrete surface…. but if you just want to cover the area with one colour try looking here: http://www.sherwin-williams.com/homeown … y-how-tos/ Jun 27 14 11:34 am Link Gesso has piqued my interest in the past as an interesting material to explore for non-canvas applications. It's like a flexible plaster-based product, right? Jun 27 14 12:26 pm Link Not to be a spoiler....but, There are 2 types of Concrete, Concrete that is cracked and Concrete that is going to crack. Cracks form when the supporting ground underneath erodes, shifts, moves over time. The driveway looks old and large, the lack of any expansion joints in the slab only compound the matter. Good luck with the project but I think it's fruitless, any cracking repaired will only reappear at this point. Jun 27 14 01:18 pm Link No freeze thaw cycles in San Diego. Things are much more stable than in northern states. Jun 27 14 01:44 pm Link Fifty One Imaging wrote: Yes, it's a patch. Jun 27 14 02:27 pm Link I had a studio floor once that was concrete. Painted it with porch and deck enamel, looked great. Had a lot of motorcycles on it, held up well. Don't know about the weight of cars... Jun 27 14 07:38 pm Link I've done it.... As above I also used some sand. For any big chunks I used "Concrete Bonder" I think it was. I read you could also use a plain Portland "paint". You're supposed to wet whatever you concreting/cementing to prior. It was more time than I thought it would be... The mixture just kept going down in the cracks(instead of just putting a patch on top). I ended up using quite a bit of hose water to encourage this and fill these cracks which worked and has held up for a few years now. You could probably just throw the mixture on the ground and then use a hose to spray it into the cracks. If it's a concern, it will be considerably less porous than standard concrete and not drain the same. G'luck Jun 27 14 09:40 pm Link Click Hamilton wrote: Gesso is mainly a binder - consistency... think more along the line of Tom Sawyer era whitewash that is a milky beige in colour. Jun 27 14 10:23 pm Link Fifty One Imaging wrote: Click is in San Diego so there's not going to be any freeze/thaw but there are going to be minor tremors. Jun 27 14 10:49 pm Link JoJo wrote: We could start out with alluring naked models laid out and composed along the crack lines. Then give them trowels and globs of mud as props. Then maybe turn the driveway into a giant finger-painting canvas, using their naked bodies rather than their fingers to make art. In the process, cracks would be filled JoJo wrote: I've seen clever things done with hard boiled eggs and soy sauce JoJo wrote: I like sick and demented artists! Jun 28 14 08:36 am Link |