Fly ash in concrete. Scanning electron microscope of a conglomeration of spherical particles of fly ash in the cement matrix of a concrete sample | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Landmann, Patrick |
Taille de l’image : | 5058 px × 3461 px |
Model Release : | Non requis |
Restrictions : | - |