Abstract: A stay-in-place concrete form includes masonry shells layered with lightweight concrete and rigid insulation tied with plastic ladders. The masonry shells can be capped with plastic shims that compensate for the variation in height of the shells. This allows for the shells, together with the shims, to be a consistent height and allows for dry stacking. The masonry shells are bonded together with a layer of lightweight concrete poured in a cavity behind the masonry shells instead of being bonded together by mortar joints. This dry stacking method can result in labor time and training savings over conventional masonry mortar construction.

Abstract: Red amorphous phosphorus is formed by thermal conversion of yellow phosphorus by a process wherein thermal conversion is effected while simultaneously the heat of conversion is permitted to effect evaporation of yellow phosphorus. The evaporated yellow phosphorus is condensed, collected and used in a subsequent conversion batch. The red amorphous phosphorus is obtained substantially free from residual unconverted yellow phosphorus and in a physical form which allows ready further processing to particulate form.