A new perspective on the hydration characteristics of cement phases

✍ Scribed by J.J. Beaudoin; V.S. Ramachandran

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 344 KB
• Volume: 22
• Category: Article
• ISSN: 0008-8846
• DOI: 10.1016/0008-8846(92)90021-m

✦ Synopsis

The cement phases, C3S, C2S, C3A and C4AF of same particle size distribution characteristics were hydrated at a water : solid ratio of 0.45 and their hydration, strength and porosity characteristics were followed from a few days up to 1 year. Significant differences from Bogue-Lerch data were observed for relative strengths. The strength values at 10 days were in the order C4AF>C3S>C2S>C3A, whereas those of Bogue-Lerch were in the order C3S>C2S>C4AF>C3A. At 1 year the values were C3S>C2S>C4AF>C3A but those of Lerch-Bogue were C3S= C2S > C3A>C4AF. On a semi-log plot of strength vs porosity, the data points for the phases C3S, C2S and C4AF showed linearity and fell on the same line. The points for the C3A phase showed linearity but had a different slope from other phases. The 'intrinsic strength', defined as the strength extrapolated to zero porosity, was the same for all the pastes, the value being 500MPa.