Concrete Microstructure and its Relationships to Pore Structure, Permeability, and General Durability

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Title: Concrete Microstructure and its Relationships to Pore Structure, Permeability, and General Durability

Author(s): D. M. Roy, D. Shi, B. Scheetz, and P. W. Brown

Publication: Special Publication

Volume: 131

Issue:

Appears on pages(s): 139-152

Keywords: conveying; Darcy's law; durability; log-normal distribution; microstructure; models; percolation; permeability; porosity; pressure; Materials Research

Date: 3/1/1992

Abstract:
The principal mechanism for the deterioration of concrete is transport of fluids either into or out of the pore structure of hardened body. The fluid transport occurs via a complex network of interconnected porosity incorporating both the cementitious matrix and matrix/aggregate interfacial regions. Paper describes the development of an experimental method and a mathematical background for a rapid water-permeability measurement method and a mathematical model relating porosity, described in terms of a log-normal distribution, to permeability.