Evidence of calcium silicoaluminates in hydrated mixtures of tricalcium silicate and tricalcium aluminate

✍ Scribed by M. Regourd; H. Hornain; B. Mortureux

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 951 KB
• Volume: 6
• Category: Article
• ISSN: 0008-8846
• DOI: 10.1016/0008-8846(76)90002-8

✦ Synopsis

Calcium monosilicoaluminate C3A.CaSi03o12 H20 and calcium trisilicoaluminate C3A.3 CaSi03o3] H20 have been identzfied in pastes of C3S + C3A. Electron probe microanalysis and scanning electron microscopy with energy X-ray dispersive analysis show that silieoaluminates are both formed around C3A grains by diffusion of silicate ions from C3S grains through solution. In samples containing gypsum, these silicate ions diffuse through the sulfoaluminate zone.

Le monosilicoaluminate C3A.CaSi03o12 H20 et le trisilicoaluminate C3A.3 CaSi03o31 H20 ont 4t@ identifi@s dans des p~tes de C3S + C3A. L'analyse ~ la microsonde 41ectronique et au microscope @lectronique i balayage 4quip@ d'un spec-trom~tre X dispersif en 4nergie montre que ces silicoaluminates se formeni autour des grains de C3A par diffusion des ions silicate depuis les grains de C3S, i travers la solution. Dans les @chantillons contenan% du gypse, les ions silicate diffusen% ~ travers la zone de sulfoalumi-na%eo