Definately can be polished! Guaranteed I'm the Owner of Texas Concrete Polishing Services give me a call and I can answer any additional questions.

Step 1. Grind the flaking on the bottom with a 3"or 5"diamond cupwheel any grit will work. OR JUST CHIP AWAY WITH HAMMER AND SCREW DRIVER

Step 2. Use polishing grout or rock hard setting powder cement and fill the porosity in the block with a 6 inch metal spatula. It may take 2 coats and let dry overnight.

Step 3. take a 100 grit polishing puck and with your hand smooth the block out. Once smooth use a lithium silicate densifier. I recommend endurapolish by H&C one gallon about $35. apply 4 -5 coats Since its porous. Let dry 4 hours or overnight the longer the better but overnight is more than enough. This creates the hard surface that makes it possible to polish.

Step 4. Polish and Seal, Burnish Polish with 400 ,800, and 1500 or even 3000 grit polishing pucks your choice. You may be satisfied with the 400 grit. Either by hand with a single 3" puck or with 5" polishing pad on a variable speed polishing hand grinder. Note if densifier will still absorb add coats between the stages of the polishing phase. Once satisfied with the mirror shine and look apply and Outdoors UV Penetrating Concrete Sealer preferably high shine or we look. Don't over do it just as apply one thin coat with a microfiber pad or rag. Let dry and burnish with a 5 inch 3000 grit burnishing pad on a hand grinder at a high speed at least 3000 rpms. Repeat as needed. Test it out .... tell your wife I'm testing out my polished cinder blocks and pull out your razor and shaving cream. Better yet Show the kids. Tell them look what your dad did today. a before and after block and when they go wwwwooohhhh! Cooool ! Tell them do y'all want me to show you how I got these super powers to make this block shine. yell out Nobodys got blocks like this!. Then make a family competition night and create a low cost memory of fun for the kids. If anyone complains about their fingers hurting tell them to man up it's just a couple blocks come on look at mom you want her to beat you she's got smaller fingers. When they get older and look back and remember how much fun they had with a plain and simple activity. They will realize it wasnt just the activity but the quality of time you spent with them. When they remind you how much fun they had years ago you just tell them your fingers hurt so bad there's was no way I was doing that by myself you guys were free labor.

Thanks for reading this far. if this was helpful give me a thumbs up. Take luck and care

TEXAS CONCRETE POLISHING SERVICES

Definitely can be polished!

Step 1. Grind the flaking on the bottom with a 3"or 5"diamond cupwheel any grit will work. OR JUST CHIP AWAY WITH HAMMER AND SCREW DRIVER

Step 2. Use polishing grout or rock hard setting powder cement and fill the porosity in the block with a 6 inch metal spatula. It may take 2 coats and let dry overnight.

Step 3. take a 100 grit polishing puck and with your hand smooth the block out. Once smooth use a lithium silicate densifier. I recommend endurapolish by H&C one gallon about $35. apply 4 -5 coats Since its porous. Let dry 4 hours or overnight the longer the better but overnight is more than enough. This creates the hard surface that makes it possible to polish.

Step 4. Polish and Seal, Burnish Polish with 400 ,800, and 1500 or even 3000 grit polishing pucks your choice. You may be satisfied with the 400 grit. Either by hand with a single 3" puck or with 5" polishing pad on a variable speed polishing hand grinder. Note if densifier will still absorb add coats between the stages of the polishing phase. Once satisfied with the mirror shine and look apply and Outdoors UV Penetrating Concrete Sealer preferably high shine or we look. Don't over do it just as apply one thin coat with a microfiber pad or rag. Let dry and burnish with a 5 inch 3000 grit burnishing pad on a hand grinder at a high speed at least 3000 rpms. Repeat as needed.