Microwave technique were used to investigate the early hydration of slag cement with different slag percentages, different activators and different amount of activator. It is found that higher slag cement causes a higher dielectric constant E and a shorter induction period. But higher slag cement sa
Microwave study of hydrating cement paste at early age
β Scribed by K. Gorur; M.K. Smit; F.H. Wittmann
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 505 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0008-8846
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Heat of hydration of cement pastes was studied under different ambient tem~eratures. The results show that when cement paste is prepared at and exposed to elevated temperatures, the rate of heat evolved is accelerated at early ages, but decelerated later on. In addition the study indicates that th
The photoacoustic signal strength was measured on a series of similar portland cement pastes dried to different water contents. Under appropriate conditions this signal is a function of only the paste's specific heat capacity and thermal conductivity. Because of this, inferences can be made about th
This paper examines the early hydration of alkali-slag cements activated by different sodium compounds, such as NaOH, Na&O,, Na$iO,.SH,O, Na,PO.,, N%HPO, and NaF, at 25 and 50Β°C. A conduction calorimeter was used to monitor hydration kinetics. It was found that the initial pH of activator solution h