Peculiar Set-Retarding Effect of Miserly Amounts of Pyrocatechol on Calcium Aluminate Cement Hydration

Authors: Alexey Brykov, Mikhail Voronkov, Olga Nekrasova, Maxim Mokeev

Pyrocatechol (benzene-1,2-diol) acts upon a calcium aluminate cement (CAC) as a very strong set and hardening retardant and a potent plasticizing agent at the same time. By studying CAC-pyrocatechol compositions using different analytical methods it was shown that pyrocatechol indeed slows CAC hydration and decreases strength of hardening stone. What makes this behavior a peculiar one is that pyrocatechol is known to accelerate Portland cement (PC) setting drastically.


Journal: Materials Sciences and Applications
DOI: 10.4236/msa.2018.95031

Paper Id: 84557 (metadata)

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