Can you explain about the conductivity number and different brick manufacturers to us lurkers?WG bricks are one of the best around for a good conductivity number....you'll forget all about the size discrepancy when you're not scorching the bottoms of the pizza and bread.
Simply put, the more alumina in the brick, the higher the conductivity will be. A brick that is highly conductive will tend to burn pizza because of higher surface temperatures than a brick with lower alumina %....low duty brick tends to be less conductive than med duty brick, definitely less than high duty brick. WG is one of the lower ones out there with 0.69 W/mk. The density of each type of brick is a contributor to how heat is distributed, with high duty being the hardest, most dense...to low duty, which is softer and the least dense.....except for insulating firebrick, which is not used as theremal mass.Can you explain about the conductivity number and different brick manufacturers to us lurkers?
I think from an excavator's point of view, fire brick are light tan and have no holes, didn't know there was more to it than that. :blink:
Thanks for the pics, Dom-as, looks like you are making good progress. :thumbsup:
Hey Sean,Actually, come to think of it...the whiteacre are very brittle on the outside, but the inside is fairly crumbly.
SC...what do you say about leaving and unfinished dome for a while. I hope to get the barrel done today but i forgot about Garlicfest, so that will take up a good chunk of the day, (yesterday was basketball, last weekend was soccer, weekend before was the cottage, add that to the rain we've had every 3rd evening and it's no wonder this thing is over a monthe behind where I thought I'd be).
Anyway, I know that once I get the dome started that I won't finish it in a day...so will HTC hold the brick up for days without any support underneath? With fireplaces nothing is less than 45* so i don't worry too much but after the 2nd course I think I'll be out of a horizontal plane