The influence of the chemical composition of hydrogels on their behavior in cementitious materials

Matériaux et constructions - Tập 54 - Trang 1-19 - 2021
Khashayar Farzanian1,2, Babak Vafaei1, Ali Ghahremaninezhad1
1Department of Civil, Architectural and Environmental Engineering, University of Miami, Coral Gables, USA
2Department of Internal Medicine, Yale University, New Haven, USA

Tóm tắt

This study examines how the chemical composition of hydrogels influences the behavior of hydrogels in cementitious materials. A stark contrast in the behavior of some hydrogels in extracted cement pore solution, where cement particles are excluded, and in cement mixture was observed. The observed contrast was attributed to the chemical processes between the hydrogel and cement particles, which are excluded in the extracted pore solution. This finding raises concerns regarding the accuracy of hydrogel absorption measurements using only the extracted pore solution to determine the absorption of hydrogels in cement paste. The effect of hydrogels with different chemical compositions on the hydration, electrical resistivity, autogenous shrinkage, and strength of cement paste was evaluated and discussed.

Tài liệu tham khảo

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