A multi-component admixture in powdered form containing superplasticizers and other compounds fixed on a base of amorphous silica of high specific surface area and pozzolanic activity. The higher pozzolanic activity of RHEOBUILD TDS, with respect to natural and artificial ordinary pozzolans, makes concrete resistant to the “natural” chemical aggressive action of sulphates, chlorides, carbon dioxide and alkalis.
Features and Benefits
The presence of amorphous, high-specific-surface silica and superplasticizers imparts two basic characteristics to RHEOBUILD TDS: the pozzolanic activity and the thixotropic activity, together with the ability to considerably reduce the water/cement ratio (w/c).
The pozzolanic activity is the ability to combine with the free lime from the cement hydration to produce calcium hydrosilicates. The higher pozzolanic activity of RHEOBUILD TDS, with respect to natural and artificial ordinary pozzolans, makes concrete resistant the natural aggressive action of sulphates, chlorides, carbon dioxide and alkalis.