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.
Micro-structure of standard lightweight mortars with perlite: (a) grain of sand surrounded by cement paste (×500), (b) combination of perlite with cement paste, intense interface between them (×500), (c) micro-area well-developed C-S-H phase crystals (×104), (d) results of elemental analysis in Energy Dispersive Spectroscopy (EDS) micro-area from the surface of standard samples.
