Figure 4.
FTIR spectra of cement and composite-cement materials performed at 28 days after their preparation in the region between (a) 400 and 1600 cm−1, (b) 800 and 1250 cm−1,and (c) 2500 and 4000 cm−1.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.