Action of Some Aggressive Solutions on Portland and Calcined Laterite Blended Cement Concretes

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Title: Action of Some Aggressive Solutions on Portland and Calcined Laterite Blended Cement Concretes

Author(s): T. Marwan J. Pera, and J. Ambroise

Publication: Special Publication

Volume: 132

Issue:

Appears on pages(s): 763-780

Keywords: acid resistance; blended cements; dehydration; durability; kaolin; laterites; microstructure; pozzolanic reactions; temperature; Materials Research

Date: 5/1/1992

Abstract:
When heated at 800 C for 5 hr, Indonesian laterites showed good pozzolanic activity. The kaolin content of the material is the main cause of pozzolanicity, as indicated by the lime reactivity. Blended portland cements containing 20, 30, 40, and 50 percent of calcined laterite admixture were studied. Concretes were made with such cements and placed in aggressive solutions: seawater, acetic acid, and sulfuric acid. The best results were obtained with a cement containing 30 percent of calcined laterite admixture.