Hydration Behaviour of Ecocement in Presence of Metakaolin
2004; Volume: 51; Issue: 1 Linguagem: Inglês
10.4144/rpsj.51.35
ISSN1349-9262
AutoresNabajyoti Saikia, Akira Usami, Shigeru Kato, Toshinori Kojima,
Tópico(s)Microbial Applications in Construction Materials
ResumoImprovement of different properties of ecocement (EC), a new class of hydraulic cement by using pozzolanic materials is important for its wide applications. Present communication reports the hydration behaviour of ordinary ecocement in presence of metakaolin (MK). Ecocement and 5, 10 and 20% metakaolin containing ecocement pastes were hydrated up to 28 days at room temperature and hydration products were characterized by thermo gravimetric as well as XRD techniques. Lower amounts of Ca(OH)2 and chemically combined water (CH and CW respectively) were formed in EC hydration than those formed during the hydration of normal Portland cement (NPC). Addition of MK enhanced the rate of hydration reaction with increase formation of hydration products like C-S-H and startlingite (C2ASH8). [C: CaO, S: SiO2, A: Al2O3, H: H2O, S: SO3]
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