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Updated: May 25, 2025

Expression of Cementitious Pore Solution and the Analysis of Its Chemical Composition and Resistivity Using X-ray Fluorescence
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Expression of Cementitious Pore Solution and the Analysis of Its Chemical Composition and Resistivity Using X-ray Fluorescence

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在不同pH值下评估基于酸的修复水泥的体积和表面稳定性

Ana Cristina Padilha Janini1,2, Débora Leticia Bittencourt Leite Alves3, Victor Augusto Benedicto Dos Santos4

  • 1Department of Restorative Dentistry - Endodontics, Piracicaba Dental School, Universidade Estadual de Campinas, Piracicaba, SP, Brazil. anacristina_padilha@yahoo.com.br.

Clinical oral investigations
|February 25, 2025
PubMed
概括

准备使用的酸盐水泥在30天后,无论pH值如何,体积损失比粉末/液体形式更大. 这突显了酸性环境中的潜在不稳定性,影响了临床性能.

关键词:
3D微型CT 3D微型CT基于酸的水泥是基于酸盐的水泥.牙周内科医院 牙周内科医院 牙周内科医院电子扫描显微镜 电子扫描显微镜它们的pH值为pH.

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Soundness of Cement

The soundness of cement refers to the ability of cement paste to retain its volume after setting. Unsound cement can lead to expansion and structural damage due to the presence of free lime, magnesia, and calcium sulfate. Free lime hydrates very slowly, expanding and causing unsoundness, which is difficult to detect because it intercrystallizes with other compounds. Magnesia also reacts with water, forming crystals that can disrupt the cement's structure. Calcium sulfate can create...
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Hydration of Cement

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Sulfate Attack on Concrete

Sulfate attack on concrete is a deterioration process characterized by a whitish discoloration beginning at the edges and corners, accompanied by cracking and spalling. This phenomenon occurs when sulfates react with the components of hardened concrete, forming compounds like calcium sulfate and calcium sulfoaluminate which occupy more space than the substances they replace, causing the concrete to expand and disrupt.
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Alkali Aggregate Reaction in Concrete

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Strength tests for cement are not performed directly on neat cement paste due to difficulty in obtaining consistent, reliable specimens. Instead, cement is typically tested in the form of cement-sand mortar.
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