Figure 7.
Response surfaces for the variables: (a) compressive strength of mortar bars at 56 days and (b) flexural strength of mortar bars at 56 days.
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.