Method and a composition for preparing concrete elements having

Details Method and a composition for preparing concrete elements having Method and a composition for preparing concrete elements having

1994-06-30

1996-06-04

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

106643, 106737, 106816, C04B 1448

Patent

active

055229263

ABSTRACT:
A method and composition for preparing concrete elements comprising the steps of mixing a composition comprising the following components expressed in parts by weight (p):
a) 100 p of Portland cement;
b) 30 p to 100 p or better 40 p to 70 p of fine sand having a grain size of at least 150 micrometers;
c) 10 p to 40 p or better 20 p to 30 p of amorphous silicon having a grain size of less than 0.5 micrometers;
d) 20 p to 60 p or better 30 p to 50 p of ground quartz having a grain size of less than 10 micrometers;
e) 25 p to 100 p, or better 45 p to 80 p of steel wool;
f) a dispersing agent;
g) 13 p to 26 p or better 15 p to 22 p of water; and after setting, curing the concrete at a temperature of 250.degree. C. or higher, for a length of time sufficient to transform cement hydration products into crystalline hydrates of the xonotlite type; thus eliminating substantially all of the free water and at least the main part of the adsorbed and chemically bonded water.

REFERENCES:
patent: 2463561 (1949-03-01), Riley
patent: 4159911 (1979-07-01), Takazuka
patent: 4298660 (1981-11-01), Nakagawa
patent: 4792361 (1988-12-01), Double et al.
patent: 5298071 (1994-03-01), Vondran

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