Can calcium aluminates activate ternesite hydration?

Add time:08/19/2019    Source:sciencedirect.com

Aluminum hydroxide (AH3) has recently been shown to be able to activate hydration in ternesite, a phase found in some calcium sulfoaluminate (CSA) cements.This study explored the capacity of a number of calcium aluminates (C3A, C12A7, CA and C4A3S¯) to activate ternesite hydraulic reactivity. After laboratory synthesis, the aluminates were blended with ternesite at a ratio of 1:2 and their hydration was monitored with isothermal conduction calorimetry for 7 days at 25 °C. The resulting pastes were analysed with XRD, FTIR and DTA. The presence of ternesite in the pastes altered the aluminate heat flow curves, shortening the induction period and bringing the reaction peak forward, an indication of hastened hydration. Ternesite also altered the reaction products, which included calcium monosulfoaluminate hydrate and strätlingite.

We also recommend Trading Suppliers and Manufacturers of CALCIUM HYDROXIDE HYDRATE) (cas 1332-69-0). Pls Click Website Link as below: cas 1332-69-0 suppliers

Prev:Influence of calcium to silica ratio on H2 gas production in calcium silicate hydrate
Next:Nanoscale attraction between calcium-aluminosilicate-hydrate and Mg-Al layered double hydroxides in alkali-activated slag)