Making lightweight concrete

Details Making lightweight concrete Making lightweight concrete

1982-02-08

1983-08-16

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106 97, C04B 3144

Patent

active

043989586

ABSTRACT:
Lightweight concrete incorporating expanded polystyrene beads is made by first coating the expanded beads with an aqueous surfactant solution, which preferably contains a substantive cationic surfactant, e.g. a substituted or ethoxylated quaternary ammonium compound containing a C.sub.10 to C.sub.18 alkyl substituent or an ethoxylated primary or secondary amine having a C.sub.10 to C.sub.18 alkyl substituent, and a non-ionic surfactant such as an ethoxylated primary or secondary alcohol or a nonylphenol-ethylene oxide condensate. The wet beads are coated with dry cement and then mixed with a further supply of cement, water and sand or aggregate to complete the concrete mix.

REFERENCES:
patent: 3764357 (1973-10-01), Bowles et al.

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