25 lb. Pail of Dry-Mix Refractory Cement, High-Temperature Castable Refractory Mortar for Masonry Repair

I have used this product to line my forge muliple times and I gotta say it is incredibly durable and holds up to forge welding temperatures extremely well. I use a forced air propane forge and it gets up to welding temp pretty much every time I turn it on. Ive had to reline my forage maybe once a year using this product and all I have to do is just add more to the outside layer and it's good to go for another at least 6 months highly recommended. It holds up to borax flux very well also. Yes its thick and has aggregate.

The bucket of mix, when i opened it i found the mix was to course, the stones were to big, did not mix well and the finished product was very rough.

Total garbage. It looks like they just broke up garbage clicker and put it in a bucket. The aggregate is huge. There is barely any cement. I tried floating some of the cement out by filling a paint mixing cups with water and there was barely any paste when I washed the rocks. If you want ugly sharp little Grey rocks at a high price then this is perfect for you. If you want cement that binds to anything then buy anything else. To the guy who said "of course it has rocks in it that is called aggregate because its refractory concrete" No. IT IS SOLD as REFRACTORY CEMENT. Cement is a fine powder. No aggregate. This stuff is broken up garbage with 15% cement in it maybe.

Has been holding up perty good in foundry/forge.. currently have one small crack, but after several 2000+ degree firings, I’d say that’s perty good.. but it’s just like working with concrete, so vertical layering is perty difficult unless ur pouring around a form.. so brush coating the sides with it is very difficult.

Exactly what I needed. I used this to line the inside of a forge. A lot of people are commenting that its full of rocks and they can't get a smooth finish. Yes it is full of aggregate (small rocks). That's what makes this product a concrete. Concrete is cement mixed with aggregate. If you want a smooth finish it will take a little bit more work and some knowledge of how to finish concrete. You must "float" the mix after pouring it into your form or casting bed. This procedure is basically using something like a piece of 2x4 or other flat material that you can hold onto while spreading the mix into a flat surface (you can buy a float pretty cheap at any hardware store). After it is nice and flat, YOU ARE NOT DONE! Next you must wait for the mix to stiffen a bit before using a trowel (again, you can find trowels at a hardware store) to finish the surface. This will push any aggregate down into the mix leaving you with a nice smooth surface. This process is incredibly difficult, but not impossible, on a curved or rounded surface (for those of you using this product to make sculptures). It works very well for flat surfaces. I have yet to fire my forge so I can not speak to how well it holds up to heat, but my guess is it will do just fine. So, in short, if you are looking for a product that is very strong and thick this is a great product that does require some knowledge of concrete placement and finishing. If you are looking to cover a surface with a thin layer of refractory or just want a product that will self level and cure to a smooth surface, look at something like a self leveling grout that is fire rated. Hope this helps anyone looking for high heat refractory material.