Novel Use of Kaolin Wastes in Blended Cements
This paper describes the influence of different thermally activated clay wastes (ACW) on the hydration phases in cement pastes containing two percentages of addition (10% and 20%). Results show that the main products obtained during hydration of cement pastes containing ACW were portlandite, calcium aluminate hydrates, calcium silicate hydrates, and hydrotalcite-type compounds. Portlandite formation decreases when addition percentage is 20%, contrary to tetracalcium aluminate hydrate, which increases in similar conditions. The ACW that showed the most portlandite consumption was ACW1 (700°C, 2 h) according to thermogravimetric data.
No Supplementary Data
No Article Media
Document Type: Research Article
Affiliations: 1: Instituto Eduardo Torroja, CSIC, 28033 Madrid, Spain 2: Universidad Autónoma de, 28049 Madrid, Spain
Publication date: October 1, 2009