Protective or damage promoting effect of calcium carbonate layers on the surface of cement based materials in aqueous environments

• Published in: Cement and concrete research Vol. 40; no. 9; pp. 1410 - 1418
• Main Authors: Schwotzer, M., Scherer, T., Gerdes, A.
• Format: Journal Article
• Language: English
• Published: United States Elsevier Ltd 01.09.2010
• Subjects: ALKALINE EARTH METAL COMPOUNDS; Aqueous environments; BEAMS; BUILDING MATERIALS; CALCITE; Calcite growth; Calcium carbonate; CALCIUM CARBONATES; CALCIUM COMPOUNDS; CARBON COMPOUNDS; CARBONATE MINERALS; CARBONATES; CEMENTS; CHEMICAL PROPERTIES; Covering; CRYSTALLIZATION; DAMAGE; DRINKING WATER; Durability; Durability [C]; Exposure; Focused Ion Beam; HYDROGEN COMPOUNDS; INTERFACES; ION BEAMS; LAYERS; MATERIALS; MATERIALS SCIENCE; MINERALS; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; PRECIPITATION; Protective; SEPARATION PROCESSES; Surface layer [B]; SURFACES; Tap water; Transport Properties [C]; WATER; Surface layer [B]; Durability [C]; Focused Ion Beam; Calcite growth; Transport Properties [C]

Cement based materials permanently exposed to aggressive aqueous environments are subject to chemical changes affecting their durability. However, this holds also for tap water that is considered to be not aggressive to cementitious materials, although in that case a formation of covering layers of...