Microstructure,Pore Characteristics, and Chloride-Ion Penetration in Conventional concrete and concrete containing polymer emulsions

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Title: Microstructure,Pore Characteristics, and Chloride-Ion Penetration in Conventional concrete and concrete containing polymer emulsions

Author(s): S. Marusin

Publication: Special Publication

Volume: 99

Issue:

Appears on pages(s): 135-150

Keywords: absorption; admixtures; chlorides; epoxy resins; latex (plastic); microstructure; polymer-portland cement concrete; water; Materials Research

Date: 5/1/1987

Abstract:
Conventional portland cement concrete and concretes with latex and epoxy additives were prepared and tested for their microstructure characteristics using the scanning electron microscope (SEM). The chloride-ion penetration profiles were also studied on 10-cm concrete cubes that were immersed in 15 percent NaCl solution for 21 days. Following the 21-day soaking period and a subsequent 21-day air-drying period, concrete powder samples were removed by drilling at depth intervals of 0 to 12, 12 to 25, 25 to 38, and 38 to 50 mm and tested for acid-soluble chloride-ion content using a potentiometric titration procedure. The results of these investigations and typical micrographs are presented.