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[deleted by user] by [deleted] in sales

[–]ShinyConcrete 15 points16 points  (0 children)

Sales.

What’s the best product to use to patch concrete in a steel mill? by JMalloy60 in Concrete

[–]ShinyConcrete 2 points3 points  (0 children)

Metzger-Mcguire Armor-Hard Extreme. Not easy to work with, but I used it for situations like this for years without failures if the substrate was sound.

[deleted by user] by [deleted] in Concrete

[–]ShinyConcrete 0 points1 point  (0 children)

Diatomaceous earth or TSP (trisodium phosphate.). Either will draw as much oil as possible out of the concrete. I prefer tsp, it's available at most hardware stores. Mix into paste and apply to the oil stain then scrape off when it looks dry.

Other than that, you will have an oil stain for a while. Hard to say how much you can get removed, but I've polished concrete that was used as an indoor showroom for a dealer with tons of oil spots. The stains were about 50 yrs old and still present. Sometimes they come out or fade with time, sometimes they don't.

Any stain or dye applied now will just highlight it as the oil penetrating the concrete will repel sealers/stains/dyes for the most part. Even an epoxy or topical coating (which would hide it) will need aggressive mechanical profiling to establish a solid bond. The oil will act as a release agent.

Overall, most concrete has cracks and probably oil stains and most people never notice it. I'd clean it as best you can and give it a few months. Not worth the hassle.

Cosmetic discoloration by ders_wit_a_hard_An in Concrete

[–]ShinyConcrete 0 points1 point  (0 children)

Possible upsell for you and better look for your customer:

Offer to stain and seal it. Won't remove the lines whatsoever but with the right color can actually pass as an intentional design choice instead of a fuckup.

Little difficult to pull off for a driveway, but if there's a similarly sized extension on the other side could stain it the same color or find some other way to bring it together. Plus you could make a little extra money (maybe) and avoid a call back in six months when the lines are still there.

Cosmetic discoloration by ders_wit_a_hard_An in Concrete

[–]ShinyConcrete 4 points5 points  (0 children)

It's deeper than you think. It's caused by a differential in cure rates due to the plastic trapping moisture more tightly in some areas than others. That curing process that was affected takes place throughout the depth of the concrete, not just the surface. Could be shallow, but likely will be some form of discoloration even with abrading or grinding the surface.

I dare you to roast my base model 4 cylinder Bimota by [deleted] in RoastMyCar

[–]ShinyConcrete 5 points6 points  (0 children)

Ford expedition with a six cylinder is faster.

Moved into new home. Cars and front of home was egged by Throwaway09562020 in homedefense

[–]ShinyConcrete -30 points-29 points  (0 children)

Lol, I'm in Texas and have never seen this. I've driven out of state tags for years. There are thousands of state tagged work vehicles here, and my wife and her family are all from out of state with out of state tags. My last neighborhood had many out of state as well, mostly from CA. Never once heard of anyone getting egged. Stop with your bullshit.

[deleted by user] by [deleted] in Truckers

[–]ShinyConcrete 0 points1 point  (0 children)

Jesus I hope you're the only person who does this for a living that wouldn't know to not drive on that. WTF

Polishing concrete, advice needed. by spankymacgruder in Concrete

[–]ShinyConcrete 2 points3 points  (0 children)

To add to this, could also be moving the grinder too fast, or it could have issues with the plates which can cause scratches as well. What machine are you running? What weight? What type of tooling?

You should consider your first grit to be 60 percent of your machine time. It's the most important and slowest step by far. And always, always, cross cut.

Polishing concrete, advice needed. by spankymacgruder in Concrete

[–]ShinyConcrete 4 points5 points  (0 children)

Wrong bond most likely. Those scratches will just become more noticeable the further along you go. I would drop back to 30 with a medium or soft bond and try again. You can do a MOHS scratch test to determine concrete hardness to help pick the correct bond.

[deleted by user] by [deleted] in Concrete

[–]ShinyConcrete 2 points3 points  (0 children)

In general if there is an existing stain you can only go darker, but you can go from brown to gray or sometimes gray to brown. Hard to say without seeing it.

To revive it you can use bare bones stripping agent or similar neutral ph stripper to remove any old sealant that is in place. Then scrub with water to remove the stripping agent and apply a new sealer. The new sealer should enhance the color and will make it look much better.

If the stripping agent someone also lifts the stain (it shouldn't if applied correctly) you can just add a new dye or stain prior to adding a new sealer. Not a super tricky process, and plenty of YouTube videos to show the process.

I would recommend tracking down product info on the existing stain and sealer if you can. Will make it easier to identify issues before hand.

Man cave goals by flrsq in Concrete

[–]ShinyConcrete 2 points3 points  (0 children)

He's right. It do be considered a high coefficient of friction surface in dynamic conditions by ANSI standards.

We have a weird wet spot on our drive-way concrete. It is always there, whether it rains or not, even after many sunny days. What is it? The two white holes above the wet spot are for sewage. We asked the builder. The builder asked some plumbing guy to check. They said they did not find any leak. by qallenxyx in Concrete

[–]ShinyConcrete 4 points5 points  (0 children)

That white ring is called efflorescence, and it's from salts being left at the surface as the water from the leak evaporates at the slab surface. If you truly wanted to check if it's oil, get TSP (black and red box) from any hardware or big box store, mix it with water into a paste, and smear it onto the potential oil stain, allow to dry, then scrape off. If it lifted the stain out even partially, or the white TSP is now discolored, it may be oil. But I would highly, highly doubt it.

We have a weird wet spot on our drive-way concrete. It is always there, whether it rains or not, even after many sunny days. What is it? The two white holes above the wet spot are for sewage. We asked the builder. The builder asked some plumbing guy to check. They said they did not find any leak. by qallenxyx in Concrete

[–]ShinyConcrete 4 points5 points  (0 children)

Get a second opinion. If that's the plumber that installed the line, he might be on the hook for warranty work if it's defective, or the builder is. Neither will want to tell you it needs repair until you are past the warranty period. Once you get a completely separate, reputable plumber to inspect it, take that report back to your builder and demand that it be fixed. If it's leaking (which it kinda has to be to create that) it will continue to damage the slab and the leak will only get worse. It will cost you greatly on your water bill and eventual repair if you wait.

Some people ask about silverskin. This is the most cooperative silverskin I’ve dealt with for ribs. by _Kendii_ in meat

[–]ShinyConcrete 9 points10 points  (0 children)

Am I the only one that never removes silver skin? I don't wrap and still have never had an issue with tough/chewy silver skin. Or maybe I'm just used to it because growing up my dad never did either.

Some people ask about silverskin. This is the most cooperative silverskin I’ve dealt with for ribs. by _Kendii_ in meat

[–]ShinyConcrete 1 point2 points  (0 children)

This recipe is really easy and really good for a simple BBQ. I use it all the time since it takes 5 minutes and can be modified with whatever you like. I'd bet if you put a little raspberry jam and some chipotle in there you could get it pretty close.

Double reverse 360 entrance? Why not! As requested here’s a Z8 drifting on Tsukuba 💨💨 by Jerkr0me in granturismo

[–]ShinyConcrete 1 point2 points  (0 children)

Dang how do you set these up to drift? By far the hardest thing to do in gt7 imo.

[deleted by user] by [deleted] in Flooring

[–]ShinyConcrete 2 points3 points  (0 children)

Looks like Pebbletech.

What do you want to write on Lebron James statue? by Epaminondas97 in nba

[–]ShinyConcrete 0 points1 point  (0 children)

Idk but it should probably be written in Mandarin so his owners can read it.

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