The hydration of C3A in the presence of CaSO4"2H20 , CaCO 3 and always Ca(OH)2 in excess has been studied with X-ray diffraction. Using a special technique the diagrams were taken directly from the pastes. From the data obtained conclusions regarding the sequence of reactions and the possible phase
The effects of Cr2O3, Cu(OH)2, ZnO and PbO on the compressive strength and the hydrates of the hardened C3A paste
โ Scribed by C. Tashiro; J. Oba
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 766 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0008-8846
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โฆ Synopsis
The purpose of this paper is to investigate the effects of Cr203, Cu(OH) 2, ZnO or PbO on the hydration of C3A and characterization of its hydrates. C3A pastes adding the above compound were examined on the basis of the hydration products and their structure, compressive strength and rate of early hydration.
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The present authors regret, that in the literature survey for their paper in Cement and Concrete Research 6, 265 (1976), they missed the references mentioned by Dr. Chatterji. However, since there appears to be agreement between the results obtained by Gupta c.s., Breval (1) and by us, at least with
Using pure chemical reagents and varying the VI& content (O-3.5w!w O'O) two series of nine compositions, each for C$ and C+ phases, were prepared at 1450 "C and investigated in respect of the vanadium effect on the phases formed. Results derived by S-Ray Diffraction (SRD), step by step SRD scanning