Low density insulating and fire-resistant perlite concrete

Static structures (e.g. – buildings) – Machine or implement

Patent

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Details

527414, 524041, 524063, 524061, 252378R, 106675, E04B 200, E04F 1522

Patent

active

053564464

ABSTRACT:
The present invention relates to a method of providing thermal insulation and fire-resistance to buildings, by filling voids or spaces in and around structural members with a low density thermally insulating and fire-resistant cementitious composition containing a high proportion of a relatively smooth-surfaced, vesicular, expanded perlite. The method includes placing a flexible, woven, fire-resistant bag in the space to be filled, so as to act as a containment vessel, pumping a cementitious composition into the bag to fill a space by conforming to the shape of the space, while the bag simultaneously contains the cementitious composition in the desired position, and allowing the composition to cure into a lightweight, fire-resistant, and thermally insulating concrete. The method is particularly useful in and directed to remedial, post-construction applications in occupied buildings.

REFERENCES:
patent: 2252578 (1941-08-01), Powell
patent: 3798867 (1974-03-01), Starling
patent: 3922413 (1975-11-01), Reineman
patent: 4399645 (1983-08-01), Murphy et al.
patent: 4884381 (1985-12-01), Betti

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