The interface between corroding steel and cement paste containing chloride, with and without condensed silica fume, was studied. For specimens containing only portland cement an interfacial film of large crystals of lime (CH) covered most of the steel surface. Even a 16% replacement of the portland
Evidence of hollow shells in the microstructure of cement paste
✍ Scribed by Knut O. Kjellsen; Hamlin M. Jennings; Björn Lagerblad
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 532 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0008-8846
No coin nor oath required. For personal study only.
✦ Synopsis
Experimental evidence in support of hollow shells in the microstructure of cement paste is presented. The experimental observations show that hollow shells are not artifacts caused by drying or particle pull-outs, but are actually an important mode in the hydration of cement.
📜 SIMILAR VOLUMES
In assessing the effect of mica reinforcement on cement paste microstructure, modifications to pore-size distribution, porosity, ~on-evaporable water content, and CH particle size distribution were observed for samples hydrated for up to five years. Microstructural changes were dependent on water-ce
This paper demonstrates that the microstructure of hydrated cement paste varies with distance from an exposed, drying face. Supporting measurements of cement hydration, adsorption capacity, porosity and diffusion rate are reported for an ordinary Portland cement and an ordinary Portland/pulverised f
The influence of Sea, ground, Nile and drinking waters on the microstructure of some hydraulic cements is investigated by means of X-ray diffraction analysis. The calcium sulfo-and carboaluminate hydrates form well with a water cement ratio of 2. Seawater leads to the precipitation of gypsum. The