Preparation and hydration of β-C2S without stabilizer
✍ Scribed by S. Shibata; K. Kishi; K. Asaga; M. Daimon; P.R. Shrestha
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 289 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0008-8846
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✦ Synopsis
The preparation method of 8-C2S without stabilizer, and their hydration characteristics were studied.
8-C2S is formed when y-C2S is heated at about 1000°C or about 1500*C. The hydration kinetics of 8-CaS produced from ~'-CaS is markedly different from that from ephase.
Ca(OH) 2 is hardly produced in the hydration of 8-C2S without stabilizer.
📜 SIMILAR VOLUMES
Three laboratory clinkers were made with variable C2S content (28-57%), using industrial raw materials. These clinkers were cooled by air and studied by X-Ray Diffraction (XRD). It is concluded that by fast cooling, the active crystal forms of u-and a'-C2S were stabilized in the rich C2S clinker. Th
The final hydrated product of B-C2S is identical to the natural mineral tobermorite 5CaO. 6SiO.5-7H20 and not the tobermorite-like phase 3CaO. 2SiOp.3HgO as stated earlier . The mechanism of the hydration react -ion is f~llo~ed up to 3.5 years. The suggested mechanism is based on the extraction of t
Small quantities (<2%) of various metal oxides are incorporated into the lattice of ~-C2S during the high temperature preparation. The effect which these stabilizers have on the hydration rate is examined. A model involving the charge/radius ratio of the metal ion is developed to explain altered hyd