Claims
- 1. A method for the manufacture of a concrete structural member, which comprises:
- forming in a mold a concrete layer of cement concrete of a prescribed thickness and with an upper surface,
- placing aggregate on the entire upper surface of said concrete layer while said concrete layer is in an uncured state thereby giving rise to a composite concrete layer consisting of said concrete layer and an aggregate layer partly embedded therein,
- curing and drying said composite concrete layer and subsequently thoroughly impregnating said composite concrete layer with a monomer,
- polymerizing said monomer impregnated in said composite concrete layer to form a concrete member, and
- placing concrete on the aggregate layer side of said conctete member possessing said polymer-impregnated composite concrete layer to form said concrete structural member with said polymer-impregnated composite concrete layer forming a protective surface layer for said concrete structural member.
- 2. The method according to claim 1, wherein said aggregate to be placed on said concrete layer is coated with adhesive agent.
- 3. The method according to claim 1, wherein said monomer is methyl methacrylate or styrene.
- 4. The method according to claim 1, wherein said aggregate is gravel which has a diameter roughly ranging from 5 to 30 mm.
Parent Case Info
This is a division of application Ser. No. 753,151, filed July 9, 1985, now abandoned.
US Referenced Citations (7)
Divisions (1)
|
Number |
Date |
Country |
Parent |
753151 |
Jul 1985 |
|