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.
Effect of number of spraying on calcite content of bio-cemented sand material samples (Note: A, spraying once; B, spraying three times; C, spraying five times; D, spraying seven times). Reprinted with permission from [76]. Copyright 2021 Elsevier.
