Patent ID: 6780369
Filing Date: 2004-08-24
Classification: B28B,E04F,E04G

Abstract:
A method of producing delamination resistant surface hardened concrete comprising the steps of:pouring plastic concrete into a form to produce a plastic concrete mass having an exposed top surface having a first profile; leveling and compacting said exposed top surface of said plastic concrete mass to a compacted concrete mass having an exposed top surface having a second profile more level than said first profile, said compacted concrete mass having a surface layers, a bottom layer, and an interface between said surface layer and said bottom layer having a distinct boundary; broadcasting a first application of dry aggregate hardener onto said top surface of said compacted concrete mass; consolidating and mixing said first application of dry aggregate hardener with said surface layer of said compacted concrete mass by vibrating said first application of dry aggregate hardener on said top surface into said surface layer with a vibrating finishing tool; continuing said consolidating and mixing of said first application of dry aggregate hardener with said surface layer until a surface hardened concrete having a gradual interface between said surface layer and said bottom layer is produced, said gradual interface having an even distribution of aggregates which is not susceptible to delamination; and finishing a top surface of said surface hardened concrete with a finishing tool.