In as series of cements made out of clinkers with variable C3A/C4AF ratios and containing different amounts of gypsum, the strength development and the composition of the hydrated material were studied. For a single clinker composition the obtained strength appears to be just a function of porosity.
Investigations on the relationship between porosity, structure and strength of hydrated Portland cement pastes. II. Effect of pore structure and of degree of hydration
✍ Scribed by I. Odler; M. Rößler
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 424 KB
- Volume
- 15
- Category
- Article
- ISSN
- 0008-8846
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✦ Synopsis
Cement pastes made with different water-cement ratios were hydrated at different temperatures for different times. The main factor influencing the strength properties of the obtained samples was found to be their porosity, however pores with radii of less than 10 nm affected the resultant strength only negligibly. At equal porosities the strength increased with increasing amount of hydrate phases present. Specific surface area had no significant effect on strength.
📜 SIMILAR VOLUMES
Previous work has shown that, for a series of experimental autoclaved aerated concretes with porosities ranging from O.48 to 0.78, compressive strength is linearly related to the solid/pore volume ratio determined by helium pycnometry. In the work described here, this type of relationship has been
Evaluation of effects of C A and SOA contents in Portland cement on its compressive strengt6, hydrat!on rate and products. Three cement samples varFing in C3A content and one varying in SO 3 content were used, hydrated initially at three temperatures. Compressive strength, bound water content, free