Shotcrete -- Understanding of the hydration process of mixes containing CAC and Portland cement and proposal for a simple rheological characterization

Book · Sun Dec 31 00:00:00 EST 1995

OSTI ID:483900

Bayoux, J P; Testud, M; Guinot, D ^[1]; Willocq, J; Capmas, A ^[2]

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1. Lafarge Coppee Recherche, Saint-Quentin-Fallavier (France)
2. Lafarge Fondu International, Neuilly-sur-Seine (France)

In order to better understand the performances of CAC-slag cement and CAC--PC cement the hydration study of these mixes was undertaken. The hydrates which are responsible for the early stiffening/strengthening are identical in both mixes; it is only the time of appearance and amount which varies. Ettringite always forms first followed by the precipitation of C{sub 4}AH{sub 13}. They will both form faster then the temperature rises. As a complement, a simple laboratory equipment is proposed to characterize the stiffening behavior of the mixes straight after gauging.

• OSTI ID: 483900
• Report Number(s): CONF-9506349-; TRN: IM9726%%293
• Resource Relation: Conference: 7. conference on shotcrete for underground support, Telfs (Austria), 11-15 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of Shotcrete for underground support 7: Proceedings; Klapperich, H. [ed.] [DMT, Essen (Germany)]; Poettler, R. [ed.] [Kling Consult, Krumbach (Germany)]; Willocq, J. [ed.] [Lafarge Fondu International, Paris (France)]; PB: 325 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CEMENTS
HYDRATION
PROTECTIVE COATINGS
TUNNELS
ALUMINATES
CALCIUM COMPOUNDS
RHEOLOGY
PHASE STUDIES
MECHANICAL PROPERTIES
EXPERIMENTAL DATA