Reinforced Door

Like an iron door (opened with redstone), but resists explosions like reinforced stone.

Reinforced blocks and scaffolds

They withstand TNT and creepers and stop the crater of the nuke and the reactor. Use them for bunkers and to surround a reactor.

Block	Blast resistance	How it is made
Reinforced Stone	180	construction foam on Iron Scaffold
Reinforced Glass	180	glass with advanced alloy; transparent
Reinforced Door	180	like an iron door: opens only with redstone
(regular stone)	6

Reinforced stone is hard to mine (25, stone is 1.5). Reinforced glass is broken with a pickaxe and drops itself.

They are climbed like a ladder.
They need support: a column standing on the ground holds everything above it; sideways they extend up to 2 blocks from the column (the wooden Scaffold) or 5 (the Iron Scaffold). Without support they fall (and drop themselves).
They are the mold for construction foam: sprayed on a wooden scaffold it becomes a foam wall; on an iron scaffold, reinforced stone. See the CF Sprayer.