초록 ▼

Materials with exceptional shock attenuating properties are chemically bonded ceramics having densities that range from 30 to 160 lb/cubic foot (0.48 to 2.56 g/cc) and porosities of 20% to 80%. The materials are chemically bonded ceramic composites based on Portland cement, silica fume, various holl

Materials with exceptional shock attenuating properties are chemically bonded ceramics having densities that range from 30 to 160 lb/cubic foot (0.48 to 2.56 g/cc) and porosities of 20% to 80%. The materials are chemically bonded ceramic composites based on Portland cement, silica fume, various hollow fillers, and may include a dispersing agent, any of a variety of fibers and water.

대표청구항 ▼

[ We claim:] [1.] A settable cement mixture from which articles can be cast, said articles comprising a high porosity shock attenuating chemically bonded ceramic material having a density from about 30 to 160 lb/cubic foot and a porosity of about 20 to 80% and a compressive strength between about 50

[ We claim:] [1.] A settable cement mixture from which articles can be cast, said articles comprising a high porosity shock attenuating chemically bonded ceramic material having a density from about 30 to 160 lb/cubic foot and a porosity of about 20 to 80% and a compressive strength between about 500 and 30,000 psi when cast and set, said mixture comprising the following in percent by weight:(a) Portland Cement 6 to 40;(b) Silica Fume 4 to 18.86;(c) Hollow Inorganic Filler Particles 10 to 50;(d) Fibers 0.05 to 35;(e) Water 9 to 35; and(f) Plasticizer up to 2.