Autoclaved aerated concrete, or AAC, is concrete that has been manufactured to contain lots of closed air pockets. Lightweight and fairly energy efficient, it is produced by adding a foaming agent to concrete in a mould, then wire-cutting blocks or panels from the resulting 'cake' and 'cooking' them with steam (autoclaving).
Hi, I see you're very engaged so I figured you might enjoy another short story. I was the typical lazy little shit ever since second grade, every parent-teacher meeting the same, word for word, (he finishes all the required tasks on time and does great on all the tests but he could… work), studied some 5 minutes every class and spent the rest doing something interesting or causing trouble.
Diisocyanates are linear molecules with two ends that can react with hydroxyl groups to form carbamate bonds. The hydroxyl groups lining the skeleton of silica gels are perfect candidates for reacting with diisocyanates, and since diisocyanates have two reactive ends, they can bond to the aerogel skeleton twice.
NPK's Primary/Secondary Concrete Crushers are designed to effectively handle any primary and/or secondary demolition and recycling operation. NPK concrete pulverizers easily crush through reinforced concrete and cut through light steel structures allowing material to be separated and recycled, and simultaneously, permits easier handling of material.
Southern Cross University [email protected] 23rd Australasian Conference on the Mechanics of Structures and Materials 2014 Design of reinforced concrete corbels using
Concrete, usually Portland cement concrete, is a composite material composed of fine and coarse aggregate bonded together with a fluid cement (cement paste) that hardens over time—most frequently a lime-based cement binder, such as Portland cement, but sometimes with other hydraulic cements, such as a calcium aluminate cement.