Journal article
Effect of carboxylic acids on the morphology, physical characteristics and hydration of alpha-hemihydrate plaster
Publication Details
Authors: | Singh, N.; Vellmer, C.; Middendorf, B. |
Publisher: | Csir |
Publication year: | 2005 |
Journal: | Indian Journal of Engineering and Materials Sciences |
Pages range : | 337-344 |
Volume number: | 12 |
Start page: | 337 |
End page: | 344 |
ISSN: | 0971-4588 |
eISSN: | 0975-1017 |
Abstract
Hydration of alpha-hemihydrate in the presence of different concentrations of tartaric, succinic, malic and citric acids was studied. All the acids, except tartaric acid, retard the hydrations. pH measurements have shown that during hydration acids are adsorbed at solid surfaces, leading to the retardation of hydration. E-modulus of elasticity, tensile strengths, total porosity, compressive strength, morphological and temperature changes during hydration were studied. It is found that morphological changes control the strength properties.
Hydration of alpha-hemihydrate in the presence of different concentrations of tartaric, succinic, malic and citric acids was studied. All the acids, except tartaric acid, retard the hydrations. pH measurements have shown that during hydration acids are adsorbed at solid surfaces, leading to the retardation of hydration. E-modulus of elasticity, tensile strengths, total porosity, compressive strength, morphological and temperature changes during hydration were studied. It is found that morphological changes control the strength properties.
