A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HIGH EARLY STRENGTH POZZOLAN CEMENT BLENDS
A high early strength blended cement composition includes larger sized fly ash and/or natural pozzolan particles blended with smaller sized hydraulic cement particles containing tricalcium silicate and/or dicalcium silicate (e.g., Portland cement and/or ground granulated blast furnace slag). Excess calcium released from the hydraulic cement particles when mixed with water forms calcium hydroxide available for reaction with the fly ash and/or natural pozzolan. The fineness of the hydraulic cement particles is substantially greater than the fineness of the fly ash and/or natural pozzolan particles (e.g., about 1.25 to about 50 times greater). Reducing or eliminating coarse hydraulic cement particles that cannot fully hydrate but include unreacted cores reduces or eliminates wasted cement normally found in concrete. Replacing some or all of the coarse cement particles with coarse pozzolan particles provides a blended cement composition having significantly lower water demand compared to the hydraulic cement fraction by itself.
HIGH EARLY STRENGTH POZZOLAN CEMENT BLENDS
A high early strength blended cement composition includes larger sized fly ash and/or natural pozzolan particles blended with smaller sized hydraulic cement particles containing tricalcium silicate and/or dicalcium silicate (e.g., Portland cement and/or ground granulated blast furnace slag). Excess calcium released from the hydraulic cement particles when mixed with water forms calcium hydroxide available for reaction with the fly ash and/or natural pozzolan. The fineness of the hydraulic cement particles is substantially greater than the fineness of the fly ash and/or natural pozzolan particles (e.g., about 1.25 to about 50 times greater). Reducing or eliminating coarse hydraulic cement particles that cannot fully hydrate but include unreacted cores reduces or eliminates wasted cement normally found in concrete. Replacing some or all of the coarse cement particles with coarse pozzolan particles provides a blended cement composition having significantly lower water demand compared to the hydraulic cement fraction by itself.
HIGH EARLY STRENGTH POZZOLAN CEMENT BLENDS
POZZOLAN-ZEMENT-MISCHUNGEN VON HOHER UND FRÜHER FESTIGKEIT
MÉLANGES DE CIMENT POUZZOLANIQUE À HAUTE RÉSISTANCE INITIALE
GUYNN JOHN M (author) / HANSEN ANDREW S (author)
2019-12-11
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
| NTIS | 1979
Influence of the Fineness of Pozzolan on the Strength of Lime Natural-Pozzolan Cement Pastes
| British Library Online Contents | 1994
Influence of the Fineness of Pozzolan on the Strength of Lime Natural-Pozzolan Cement Pastes
| Online Contents | 1994