A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Integrated Design of Photocatalysis and Structure for Cement Mortar Using Nano- Hydrosol
https://orcid.org/0000-0001-6764-4749
Due to the large specific surface area and strong van der Waals force, bulk aggregation of nano- immediately occurs when it is mixed with fresh cement mixture, limiting its reinforcing efficiency to cement-based materials. This study proposes a novel strategy to improve the mechanical and photocatalytic properties of cement mortar using nano- hydrosol instead of conventional nano- powder. Compared with pure mortar, the 28-day compressive and flexural strength of mortar with 0.6% by weight nano- hydrosol were enhanced by 51% and 15%, respectively, the water absorption and chloride ion diffusion coefficient were decreased by 21% and 31%, respectively. The observed improvements were attributed to the denser microstructure and enhanced micromechanical properties in the bulk matrix and around interfacial transition zone (ITZ), resulting from the better dispersion of nano- hydrosol in alkaline environment. In addition, compared with the mortar with nano- powder, the degradation efficiency of Rhodamine B and NO by the mortar with nano- hydrosol (0.6% by weight) was enhanced by 18.3% and 17.1% at 28 days, respectively. The enhancement resulted from the higher intrinsic photocatalytic activity and larger exposed surface area of nano- hydrosol due to better dispersion. The research outcomes demonstrate the potential of using nano- hydrosol in cement mortar to significantly increase the mechanical strength, durability, and photocatalytic activity, which can lead to the development of cement-based constructions with the integrated design of functionality and structure.
Integrated Design of Photocatalysis and Structure for Cement Mortar Using Nano- Hydrosol
https://orcid.org/0000-0001-6764-4749
Due to the large specific surface area and strong van der Waals force, bulk aggregation of nano- immediately occurs when it is mixed with fresh cement mixture, limiting its reinforcing efficiency to cement-based materials. This study proposes a novel strategy to improve the mechanical and photocatalytic properties of cement mortar using nano- hydrosol instead of conventional nano- powder. Compared with pure mortar, the 28-day compressive and flexural strength of mortar with 0.6% by weight nano- hydrosol were enhanced by 51% and 15%, respectively, the water absorption and chloride ion diffusion coefficient were decreased by 21% and 31%, respectively. The observed improvements were attributed to the denser microstructure and enhanced micromechanical properties in the bulk matrix and around interfacial transition zone (ITZ), resulting from the better dispersion of nano- hydrosol in alkaline environment. In addition, compared with the mortar with nano- powder, the degradation efficiency of Rhodamine B and NO by the mortar with nano- hydrosol (0.6% by weight) was enhanced by 18.3% and 17.1% at 28 days, respectively. The enhancement resulted from the higher intrinsic photocatalytic activity and larger exposed surface area of nano- hydrosol due to better dispersion. The research outcomes demonstrate the potential of using nano- hydrosol in cement mortar to significantly increase the mechanical strength, durability, and photocatalytic activity, which can lead to the development of cement-based constructions with the integrated design of functionality and structure.
Integrated Design of Photocatalysis and Structure for Cement Mortar Using Nano- Hydrosol
https://orcid.org/0000-0001-6764-4749
Due to the large specific surface area and strong van der Waals force, bulk aggregation of nano- immediately occurs when it is mixed with fresh cement mixture, limiting its reinforcing efficiency to cement-based materials. This study proposes a novel strategy to improve the mechanical and photocatalytic properties of cement mortar using nano- hydrosol instead of conventional nano- powder. Compared with pure mortar, the 28-day compressive and flexural strength of mortar with 0.6% by weight nano- hydrosol were enhanced by 51% and 15%, respectively, the water absorption and chloride ion diffusion coefficient were decreased by 21% and 31%, respectively. The observed improvements were attributed to the denser microstructure and enhanced micromechanical properties in the bulk matrix and around interfacial transition zone (ITZ), resulting from the better dispersion of nano- hydrosol in alkaline environment. In addition, compared with the mortar with nano- powder, the degradation efficiency of Rhodamine B and NO by the mortar with nano- hydrosol (0.6% by weight) was enhanced by 18.3% and 17.1% at 28 days, respectively. The enhancement resulted from the higher intrinsic photocatalytic activity and larger exposed surface area of nano- hydrosol due to better dispersion. The research outcomes demonstrate the potential of using nano- hydrosol in cement mortar to significantly increase the mechanical strength, durability, and photocatalytic activity, which can lead to the development of cement-based constructions with the integrated design of functionality and structure.
Integrated Design of Photocatalysis and Structure for Cement Mortar Using Nano- Hydrosol
J. Mater. Civ. Eng.
Jiang, Jihong (author) / Wang, Han (author) / Miao, Yanchun (author) / Dong, Xiaobin (author) / Li, Yali (author) / Lu, Zeyu (author)
2024-12-01
Article (Journal)
Electronic Resource
English
Characterization and photocatalysis of Eu3+-TiO2 sol in the hydrosol reaction system
| British Library Online Contents | 2004