Page 428 - Forensic Structural Engineering Handbook
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CONCRETE STRUCTURES 12.19
FIGURE 12.16 Backscattered electron image of a crack (between arrows) in
a prestressed, precast concrete pile of a marine substructure. Energy dispersive
spectroscopy (Fig. 12.17) identified the deposits (+) in the crack as brucite,
Mg(OH) 2 , a common product of chemical reactions between seawater and hard-
ened cement paste. (Courtesy of CTLGroup.)
Mg
600
Counts 400 O
200
Si S CI Ca
0 1 2 3 4 keV
FIGURE 12.17 Energy dispersive spectrum (EDS) of the deposits (marked by +) in Fig. 12.16. (Courtesy
of CTLGroup.)
