A long-handled bull float smooths and levels concrete immediately after it has been screeded. For a good finish, professionals warn not to overwork concrete. Photos: Portland Cement Association ...
As portland cement hydrates or hardens it produces calcium hydroxide (Ca(OH)2), as a by-product — becoming 15- to 25 percent of the mass of cement paste. This means an average mix design develops ...
Three new surface finishes for as-cast formed concrete are defined in the new ACI 301-10 Specifications for Structural Concrete, which supersedes ACI 301-05. Rough-Form and Smooth-Form As-Cast ...
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