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Effect of the Chemical Nature of Polyvinyl Alcohol on the Microstructure of Cement Hydration Products
Publisher: American Society of Civil Engineers
Abstract: The influence of chemical nature of polyvinyl alcohol (PVA) on the microstructure of cement hydration products was investigated. Thermal analysis, X-ray diffraction, Si29 nuclear magnetic resonance (NMR), and scanning ...
Electromagnetic Wave Absorption Properties and Mechanism of Graphene/Ni0.4Zn0.6Fe2O4 Cement Composites
Publisher: ASCE
Abstract: Electromagnetic waves (EMWs) absorption cement composites were widely demanded in urban construction in the near future with increasingly serious electromagnetic pollution in rapid development and application of electronic ...
Pore Structure Characteristics and Reaction Mechanism of Fly Ash Geopolymer
Publisher: American Society of Civil Engineers
Abstract: The hydration reaction mechanism of geopolymers is intimately linked to their composition and structure. Additionally, pore structure characteristics play a vital role in the properties of hardened geopolymer pastes, ...
Properties of Fly Ash Geopolymer Concrete as Marine Artificial Reef Building Materials
Publisher: ASCE
Abstract: The twenty-first century is known as the “century of the ocean.” Artificial reefs have been extensively studied and used worldwide as the main infrastructure of marine pastures. At present, research has been primarily ...
Reaction Mechanism of Active Al2O3 Groups in Geopolymers: A DFT Study
Publisher: American Society of Civil Engineers
Abstract: Although the concept of geopolymers was proposed over 40 years ago, there still remains a lack of clarity regarding their atomic-level structure and formation. In this study, the Dmol3 quantum chemistry calculation ...
Effect of Stray Current on Cement-Based Materials under Sulfate Attack
Publisher: ASCE
Abstract: In coastal areas, concrete of subway infrastructure can be jeopardized by coupled degradation conditions of stray current and sulfate solution. This paper focuses on the effect of stray current on the durability of ...
Solidification and Stabilization of Heavy Metals in Municipal Solid Waste Incineration Fly Ash Using Nanoalumina by Alkali-Activated Treatment
Publisher: ASCE
Abstract: Municipal solid waste incineration (MSWI) fly ash containing heavy metals is hazardous solid waste that requires safe disposal. Alkali-activated treatment can effectively improve the environmental safety of MSWI fly ash. ...