ISSN: 0149-6123
CODEN: CCAGPD
Page Count: 7

Methods and Equipment Used in Preparing and Examining Fluorescent Ultrathin Sections of Portland Cement Concrete
Marshall, BF
Materials research petrographer and materials technician supervisor, Virginia Highway and Transportation Research Council, Va.

Walker, HN
Materials research petrographer and materials technician supervisor, Virginia Highway and Transportation Research Council, Va.

Abstract

The method of preparation is explained for fluorescent dye-impregnated polished ultrathin sections of portland cement concrete used for a study of the microstructure of concrete. The sections were examined with a microscope that combines the features of a petrographic microscope with those of a microscope having incident fluorescing capabilities. Photomicrographs are used to illustrate microcracks, hollow shell hydration, impermeable areas, and the influence of coatings on aggregate particles.

Keywords:
concretes, petrography, microstructure, fluorescence, microscopy, impregnation, thin sections, hardened cement paste, aggregate characteristics, cracks, hydration, voids

Paper ID: CCA10166J
DOI: 10.1520/CCA10166J
ASTM International is a member of CrossRef.