In the above paper the author has emphasized the need for conductive coating of specimens by Au sputtering. It is worth noting that most modern electron-optical instruments, particularly SEMs are equipped with energy-dispersive spectrometers for microanalysis of specimens. Au sputtering of cementiti
Application of the scanning electron microscope to the study of the initial hydration of portland cement paste
β Scribed by D.M.F. Orr
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 819 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0008-8846
No coin nor oath required. For personal study only.
β¦ Synopsis
The preparation of samples for electron microscope studies of Portland cement paste at very early ages requires special techniques for forming soft paste samples, halting hydration without altering the structure of the paste and coating fracture surfaces with a conductive material.
Freeze-drying the paste and sputter coating the fracture surface with gold has produced satisfactory results.
π SIMILAR VOLUMES
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