Hi Boom, I happened to run across a post from years ago that you posted a pic few samples of exposed glass in a couple different colors of concrete. Ive been trying to conquer exposed glass concrete for years and have never been successful. (so dont do it but I have a customer that wants me to do it) Especially a white portland based concrete where I am using a very fine sand to help achieve the whitest concrete that I can get to considering the color of the sand. I have always had so much air trapped in the concrete causing tons of big and small bug holes. And I cannot get to a flowable mix without ruining it with massive amounts of water in the mixer then once vibrating the mold I get an ocean of bleed water in my mold. Do you have any time to share some advice?
Dang, that's a nice thing to say. Well, mainly in the trenches I suppose, trained in Fine woodworking until the Ikea and Walmart mentality wore me down. Had a pretty successful career as a Chef, fully trained, Red Seal the whole bit until everything from standardized menu's to the crazy stressful hours wore me down. It was time for a change and for some reason I thought it was also time to wear some nice clothes and mingle with important people so I got into Real Estate for a while, but had trouble comprising myself and went back into cabinetmaking but for some kitchen manufacturers, where apparently you don't even need to know how to use a measuring tape anymore and the 19 year old can hit the CNC button in between text messages. I resisted starting up my own woodworking shop again for the same reasons as before until I came across decorative concrete as a medium and thought wow that would be awesome to combine the two and a less stressful way to learn to work with the medium as well. As opposed to jumping into kitchens.
Hey Boom. Thanks for that info. I wonder if I'll be any better off due to the fact it's a CSA as opposed to portland?? Time will tell. If it becomes an issue I'll attempt to fall back on the ol', "Concrete. The gift that just keeps on giving", saying...:-)
Hi again. It seems that everything that caused your effect on you obelisk were not the same as what caused mine. A lot of my voids were not exposed until after my first grind. I suspect that it may have been caused more by water being trapped than air. It could also have been caused by trying to mix to much material. I mixed 2.5 c.f. with a hand mixer and probably did not mix sufficiently. Would like to get this effect again, and just trying to figure out how. Another question. What is the difference between VMA and Plasticizer? I use both but don't totally understand. I have some more pictures of vessels if your interested. How can I send to just you?
Boom. I have not found a way to eliminate all the entrapped air but have reduced it by using a s*** load of WR. I always seem to get air on the part of the mold that catches the air. I have started to embrace the look. The base on the Reflections table is steel. i had a friend make this for me. Too bad he painted it flat black. I like the steel or rust look. Someday I'll be able to cast something like that. The inside of the bowl is actually a stainless bowl I purchased at the store. Had to trim the rim a little. I have made a quite a few vessels. Going to be casting more shortly, including a couple of sand castings Always wanted to try this..I will send pictures if you add me as a friend. Would like to share info.with you.You have some beautiful pieces. Your obelisk has the same texture as my side table (photo on my page) not sure how I got that but would like to duplicate it someday. Any ideas why?
Fishstone's Super-SIX-Admix™ is a proprietary blend of SIX different admixtures designed to achieve pinhole free, dense and strong concrete that will free flow in precast molds. Super SIX makes it easy to produce Ultra high performance concrete (UHPC), also known as Engineered Concrete Composition (ECC) and Reactive Powder Concrete (RPC). Super-SIX™ is a non-hazardous material utilizing the newest and most advanced technologies.