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Hydration characteristics of beta-C2S in the presence of some accelerators
Beta-dicalcium silicate (beta-(2CaO)(SiO2)) is present in portland cement as belite stabilized by some impurities. The hydration of beta-(2CaO)(SiO2) is similar to that of (3CaO)(SiO2) but with slower rate. Extensive investigation had been done on the effect of CaCl2 as accelerator on the hydration of (3CaO)(SiO2) but meager work had been done on belite (beta-(2CaO)(SiO2)). The aim of the present work is to investigate the effect of some accelerators such as CaCl2, Ca(NO3)2, Ca(CH3COO)2 and K2CO3 on the hydration of B2O3 stabilized beta-(2CaO)(SiO2). The results show that the hydration of pure beta-(2CaO)(SiO2) liberates Ca(OH)2 up to 28 days which is consumed within 90 days. The hydration products are mainly tobermorite like phase with some CaCO3. On the other side, the effect of accerators consumes the liberated Ca(OH)2 and accelerates the hydration of beta-(2CaO)(SiO2).
Hydration characteristics of beta-C2S in the presence of some accelerators
Beta-dicalcium silicate (beta-(2CaO)(SiO2)) is present in portland cement as belite stabilized by some impurities. The hydration of beta-(2CaO)(SiO2) is similar to that of (3CaO)(SiO2) but with slower rate. Extensive investigation had been done on the effect of CaCl2 as accelerator on the hydration of (3CaO)(SiO2) but meager work had been done on belite (beta-(2CaO)(SiO2)). The aim of the present work is to investigate the effect of some accelerators such as CaCl2, Ca(NO3)2, Ca(CH3COO)2 and K2CO3 on the hydration of B2O3 stabilized beta-(2CaO)(SiO2). The results show that the hydration of pure beta-(2CaO)(SiO2) liberates Ca(OH)2 up to 28 days which is consumed within 90 days. The hydration products are mainly tobermorite like phase with some CaCO3. On the other side, the effect of accerators consumes the liberated Ca(OH)2 and accelerates the hydration of beta-(2CaO)(SiO2).
Hydration characteristics of beta-C2S in the presence of some accelerators
Hydratisierungscharakteristik von beta-(2CaO)(SiO2) in Gegenwart einiger Abbindebeschleuniger
El-Didamony, H. (Autor:in) / Sharara, A.M. (Autor:in) / Helmy, I.M. (Autor:in) / Abd El-Aleem, S. (Autor:in)
Cement and Concrete Research ; 26 ; 1179-1187
1996
9 Seiten, 5 Bilder, 25 Quellen
Aufsatz (Zeitschrift)
Englisch
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