The Earthquake Engineering Online Archive

Effect of Lime on Hydration of Pastes Containing Gypsum and Calcium Aluminates or Calcium Sulfoaluminate

Mehta, Povindar K.

UCB/SESM-1973/10, Dept. of Civil Engineering, University of California, Berkeley, 1973-06, 5 pages

Chemical reactions responsible for ettringite formation in commercial expansive cements are reviewed. It is proposed that colloidal ettringite can absorb large quantities of water, thereby causing slump loss in fresh concrete and expansion in hardened concrete.

Available online: http://nisee.berkeley.edu/documents/SEMM/SEMM-73-10.pdf (761 KB)