Reminds me years ago benching manholes lol. Trowel it up 3-4 times...bringing the fat to the surface. I used to cover with wet hessian ...cement was set enough not to get marked. I admire your resilience in this oven making malarkey lol........hard work!
5:1 vermiculite to Portland is way more efficient than the aircreet and a whole lot easier. There is no need for a heatproof mix over the insulation layer when using the vermiculite or refratory insulation. Your getting a tremendous amount of heat transfer with the aircreet and very little insulation value. Also mixing calcium aluminate with lime accelerates the mixture very rapidly too rapidly and drastically reduces its strength. It's best to use portland instead.
Do you think you could just use this mix instead of the perlite and cement? I’m thinking of making the exercise ball form but putting high walls around it and pour?
Hi am.planing to make bbq qanted to ask can this morter be used foe inner walls to lay beicka and is this heat resistant or is this only for exterioe walls? Please could uou let me.know v appreciated
Can I ask a question ? I did a render with this mix, after a week of wet drying i left it for one more and after that many tiny cracks occured on the whole surface.. what did I do wrong please ? Thank you
@@M_0NKE Yes but make sure you're using actual cement powder and not a refractory mix. Some sellers mix expensive cement, high in calcium aluminate with washed river sand but still brand it as cement.
Sorry could be expensive mistake if I get it wrong. To clarify, I make your basic refractory mix and add 2 parts of that mix to 5 parts vermiculite (or perlite) and then add 2 to 2.5 water to get right consistency.
As a 35 year refractory masonry specialist, now retired, this is one of the poorest jobs of laying brick that I've ever seen. 2 inch+ wide joints instead of cut bricks? Just no. This project will self destruct within a few years. Guaranteed. This guy wouldn't last more than a day or two on any job doing work this poor. Not trying to be ignorant or disrespectful, just stating the truth about the one thing in the world that I am the most skilled and knowledgeable about. This is done wrong...entirely. Typically one would not be making their own bonding mix, it is very specific to the composition of the type of masonry unit being used, they are not even a little bit interchangeable. In every job I've even been on it was supplied premixed and ready to use in buckets. Typically it is liquid enough that a trowel cannot be used, a laddle is used. Never seen 'homeade' used at all and would not try it.
