초록 ▼

A self-leveling cementitious mixture with excellent flow properties and which hardens with a controlled rate of strength development to an ultra-high compressive strength composite composition for use in making articles such as cementitious armor panel with ballistic and blast resistant properties i

A self-leveling cementitious mixture with excellent flow properties and which hardens with a controlled rate of strength development to an ultra-high compressive strength composite composition for use in making articles such as cementitious armor panel with ballistic and blast resistant properties including: a continuous phase resulting from the curing of an aqueous mixture, in the absence of silica flour, of inorganic cement binder, inorganic mineral filler having a particle size of about 150-450 microns, pozzolanic mineral filler, polycarboxylate based self-leveling agent and water. The cementitious mixture may include alkanolamine, such as triethanolamine, and acid or acid salt, such as tartaric acid. The cementitious composition may be reinforced with reinforcing fibers, e.g. glass fibers, in an amount of about 0.5-6.0% by volume of the overall cementitious composition. The fibers are uniformly dispersed in the cementitious composition before it is cured to form a final cementitious armor panel.

대표청구항 ▼

We claim: 1. A dimensionally stable cementitious composition comprising:a continuous phase resulting from the curing of a self-leveling aqueous cementitious mixture, in the absence of silica flour, of25-45 weight % inorganic cement binder,35-65 weight % sand filler having a particle size of about 15

We claim: 1. A dimensionally stable cementitious composition comprising:a continuous phase resulting from the curing of a self-leveling aqueous cementitious mixture, in the absence of silica flour, of25-45 weight % inorganic cement binder,35-65 weight % sand filler having a particle size of about 150-450 microns,5-15 weight % pozzolanic filler having a median particle size of less than or equal to 50 microns,0.25-5.0 weight % polycarboxylate based self-leveling agent, and6-12 weight % water.