Surface Charge Properties of Marble Powder and its Effect on the Formation of Hydrates in Cement Paste
Replacing part of cement with waste stone powder can reduce the use of cement, thus reducing energy consumption and CO<sub>2</sub> emission. Different stone powders affect the properties of cement-based materials differently. It is important to clarify the effect of the surface propertie...
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MDPI AG
2020-10-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/10/10/914 |
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| author | Xiaowei Ouyang Shida Xu Liquan Wang Jianzhang Huang |
| author_facet | Xiaowei Ouyang Shida Xu Liquan Wang Jianzhang Huang |
| author_sort | Xiaowei Ouyang |
| collection | DOAJ |
| description | Replacing part of cement with waste stone powder can reduce the use of cement, thus reducing energy consumption and CO<sub>2</sub> emission. Different stone powders affect the properties of cement-based materials differently. It is important to clarify the effect of the surface properties of the stone powder on the properties of cement-based materials. In this paper, the charge properties of marble powder and its effect on the formation of hydrates were investigated. Zeta potential was used to study the charge properties of the marble surface. Parallelly, the morphology of hydrates on the surface of the cement and marble particles at a very early hydration age was observed by using SEM. Finally, the influence of the surface charge properties of the marble particles on the formation of hydration products of cement was discussed. The results showed that the marble particles have specific adsorption of Ca<sup>2+</sup> (chemical adsorption). Therefore, the marble particles in the simulated solution can adsorb a large amount of Ca<sup>2+</sup>, thus achieving a high potential value and facilitating the formation of hydrates on their surface. However, the adsorption of Ca<sup>2+</sup> towards the surface of the cement particle is driven by a relatively weak electrostatic force. Compared with the marble particles, less Ca<sup>2+</sup> ions are adsorbed, and thus, fewer hydrates are formed on the surface of cement particles. |
| first_indexed | 2024-03-10T15:45:31Z |
| format | Article |
| id | doaj.art-2a1b088059a94510aefe625fa9c17f42 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-03-10T15:45:31Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-2a1b088059a94510aefe625fa9c17f422023-11-20T16:28:50ZengMDPI AGCrystals2073-43522020-10-01101091410.3390/cryst10100914Surface Charge Properties of Marble Powder and its Effect on the Formation of Hydrates in Cement PasteXiaowei Ouyang0Shida Xu1Liquan Wang2Jianzhang Huang3Guangzhou University—Tamkang University Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou University, Guangzhou 510006, ChinaGuangzhou University—Tamkang University Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou University, Guangzhou 510006, ChinaGuangzhou University—Tamkang University Joint Research Center for Engineering Structure Disaster Prevention and Control, Guangzhou University, Guangzhou 510006, ChinaSchool of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaReplacing part of cement with waste stone powder can reduce the use of cement, thus reducing energy consumption and CO<sub>2</sub> emission. Different stone powders affect the properties of cement-based materials differently. It is important to clarify the effect of the surface properties of the stone powder on the properties of cement-based materials. In this paper, the charge properties of marble powder and its effect on the formation of hydrates were investigated. Zeta potential was used to study the charge properties of the marble surface. Parallelly, the morphology of hydrates on the surface of the cement and marble particles at a very early hydration age was observed by using SEM. Finally, the influence of the surface charge properties of the marble particles on the formation of hydration products of cement was discussed. The results showed that the marble particles have specific adsorption of Ca<sup>2+</sup> (chemical adsorption). Therefore, the marble particles in the simulated solution can adsorb a large amount of Ca<sup>2+</sup>, thus achieving a high potential value and facilitating the formation of hydrates on their surface. However, the adsorption of Ca<sup>2+</sup> towards the surface of the cement particle is driven by a relatively weak electrostatic force. Compared with the marble particles, less Ca<sup>2+</sup> ions are adsorbed, and thus, fewer hydrates are formed on the surface of cement particles.https://www.mdpi.com/2073-4352/10/10/914marble powderformationadsorptioncement pastehydrates |
| spellingShingle | Xiaowei Ouyang Shida Xu Liquan Wang Jianzhang Huang Surface Charge Properties of Marble Powder and its Effect on the Formation of Hydrates in Cement Paste Crystals marble powder formation adsorption cement paste hydrates |
| title | Surface Charge Properties of Marble Powder and its Effect on the Formation of Hydrates in Cement Paste |
| title_full | Surface Charge Properties of Marble Powder and its Effect on the Formation of Hydrates in Cement Paste |
| title_fullStr | Surface Charge Properties of Marble Powder and its Effect on the Formation of Hydrates in Cement Paste |
| title_full_unstemmed | Surface Charge Properties of Marble Powder and its Effect on the Formation of Hydrates in Cement Paste |
| title_short | Surface Charge Properties of Marble Powder and its Effect on the Formation of Hydrates in Cement Paste |
| title_sort | surface charge properties of marble powder and its effect on the formation of hydrates in cement paste |
| topic | marble powder formation adsorption cement paste hydrates |
| url | https://www.mdpi.com/2073-4352/10/10/914 |
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