ASTM guide covers scanning electron microscopy for hardened concrete

Absence of standardized procedures for a method used since the 1960s to examine concrete specimens’ mix constituents, water/cement ratio and related quality control attributes has led to ASTM C1723–10 Standard Guide for Examination of Hardened Concrete Using Scanning Electron Microscopy. The new guide assists petrographers in performing scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX), and maximize the techniques’ utility in examining concrete, mortar and stucco specimens.

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