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A platform for research: civil engineering, architecture and urbanism
Preparation and properties of foundry dust/Portland cement based composites and superhydrophobic coatings
https://orcid.org/0000-0002-9437-8148
Highlights FD and PC based bulk composites and superhydrophobic coatings were prepared. The FD/PC composite with FD content of 10% have relatively high mechanical strength. The superhydrophobic coating was prepared using a simple brushing method. The superhydrophobic coatings exhibited mechanical robustness and easy repairability. The water absorption of the coating modified FD/PC composite is greatly reduced.
Abstract In this study, Found dust (FD) and Portland cement (PC) based bulk composites and superhydrophobic coatings were prepared to utilize the solid waste FD and improve the water permeability. First, the compositions, structures, pore parameters, and mechanical properties of the FD/PC composites were tested and analyzed, indicating that the mechanical strength of the FD/PC composites decreased with increasing FD content. The flexural compressive strength and compressive strength of the FD/PC composites with an FD content of 10% reduced by only 8.5% and 9.8%, respectively, compared to that of the neat hardened cement paste (HCP). At greater than 10% FD content, the mechanical strength of the FD/PC composite material drastically reduced. Second, the FD and PC based superhydrophobic coatings were prepared using a simple brush-coating method by introducing polydimethylsiloxane as a hydrophobic admixture. The composite coating exhibits superhydrophobicity after stored at room temperature for 24 h. In addition, the mechanical robustness of the FD and PC composite based coating is excellent in the abrasion and peeling test and was further improved by double-layer coating method. Particularly, the superhydrophobic coating can be easily repaired after getting damaged. Furthermore, the water absorption of the superhydrophobic coating modified FD/PC composites reduced by more than 76% in comparison with that of the uncoated FD/PC composites.
Preparation and properties of foundry dust/Portland cement based composites and superhydrophobic coatings
https://orcid.org/0000-0002-9437-8148
Highlights FD and PC based bulk composites and superhydrophobic coatings were prepared. The FD/PC composite with FD content of 10% have relatively high mechanical strength. The superhydrophobic coating was prepared using a simple brushing method. The superhydrophobic coatings exhibited mechanical robustness and easy repairability. The water absorption of the coating modified FD/PC composite is greatly reduced.
Abstract In this study, Found dust (FD) and Portland cement (PC) based bulk composites and superhydrophobic coatings were prepared to utilize the solid waste FD and improve the water permeability. First, the compositions, structures, pore parameters, and mechanical properties of the FD/PC composites were tested and analyzed, indicating that the mechanical strength of the FD/PC composites decreased with increasing FD content. The flexural compressive strength and compressive strength of the FD/PC composites with an FD content of 10% reduced by only 8.5% and 9.8%, respectively, compared to that of the neat hardened cement paste (HCP). At greater than 10% FD content, the mechanical strength of the FD/PC composite material drastically reduced. Second, the FD and PC based superhydrophobic coatings were prepared using a simple brush-coating method by introducing polydimethylsiloxane as a hydrophobic admixture. The composite coating exhibits superhydrophobicity after stored at room temperature for 24 h. In addition, the mechanical robustness of the FD and PC composite based coating is excellent in the abrasion and peeling test and was further improved by double-layer coating method. Particularly, the superhydrophobic coating can be easily repaired after getting damaged. Furthermore, the water absorption of the superhydrophobic coating modified FD/PC composites reduced by more than 76% in comparison with that of the uncoated FD/PC composites.
Preparation and properties of foundry dust/Portland cement based composites and superhydrophobic coatings
https://orcid.org/0000-0002-9437-8148
Highlights FD and PC based bulk composites and superhydrophobic coatings were prepared. The FD/PC composite with FD content of 10% have relatively high mechanical strength. The superhydrophobic coating was prepared using a simple brushing method. The superhydrophobic coatings exhibited mechanical robustness and easy repairability. The water absorption of the coating modified FD/PC composite is greatly reduced.
Abstract In this study, Found dust (FD) and Portland cement (PC) based bulk composites and superhydrophobic coatings were prepared to utilize the solid waste FD and improve the water permeability. First, the compositions, structures, pore parameters, and mechanical properties of the FD/PC composites were tested and analyzed, indicating that the mechanical strength of the FD/PC composites decreased with increasing FD content. The flexural compressive strength and compressive strength of the FD/PC composites with an FD content of 10% reduced by only 8.5% and 9.8%, respectively, compared to that of the neat hardened cement paste (HCP). At greater than 10% FD content, the mechanical strength of the FD/PC composite material drastically reduced. Second, the FD and PC based superhydrophobic coatings were prepared using a simple brush-coating method by introducing polydimethylsiloxane as a hydrophobic admixture. The composite coating exhibits superhydrophobicity after stored at room temperature for 24 h. In addition, the mechanical robustness of the FD and PC composite based coating is excellent in the abrasion and peeling test and was further improved by double-layer coating method. Particularly, the superhydrophobic coating can be easily repaired after getting damaged. Furthermore, the water absorption of the superhydrophobic coating modified FD/PC composites reduced by more than 76% in comparison with that of the uncoated FD/PC composites.
Preparation and properties of foundry dust/Portland cement based composites and superhydrophobic coatings
Wang, Fajun (author) / Xie, Ting (author) / Lei, Sheng (author) / Ou, Junfei (author) / Li, Wen (author) / Xue, Mingshan (author) / Huang, Daqi (author)
2020-02-14
Article (Journal)
Electronic Resource
English
Superhydrophobic coatings on Portland cement concrete surfaces
| British Library Online Contents | 2017
Superhydrophobic coatings on Portland cement concrete surfaces
| Elsevier | 2017
Superhydrophobic coatings on Portland cement concrete surfaces
| Online Contents | 2017
Superhydrophobic coatings on Portland cement concrete surfaces
| British Library Online Contents | 2017
Superhydrophobic coatings on Portland cement concrete surfaces
| British Library Online Contents | 2017