Yazhou Wang
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Yazhou Wang has a total of 11 co-authors. Here are the top co-authors by number of shared publications:
- Di Liu
College of Smart City Engineering, Shangqiu Normal University, Shangqiu 476000, China
1 shared publication - Guangjun Yang
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
1 shared publication - Linfang Cao
Henan Xing’an New Building Materials Co. Ltd., Zhengzhou 450001, China
1 shared publication - Meng Zhang
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
1 shared publication - Tao Ji
College of Civil Engineering, Fuzhou University, Fuzhou, China
1 shared publication - Xiaohai Liu
School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
1 shared publication
Latest Publications
- Open Access
Effect of Steel Slag Content on the Performance and Hydration Mechanism of Phosphogypsum–Steel Slag–Fly Ash All-Solid-Waste Binders
To promote the synergistic utilization of phosphogypsum (PG), steel slag (SS), and fly ash (FA), a ternary all-solid-waste binder, namely PG-SS-FA cementitious material (PSA), was prepared. The effects of SS content on workability, setting behavior, mechanical properties, hydration products, pore structure, and microstructure were systematically investigated. The results showed that increasing SS content continuously reduced the fluidity of PSA, while the setting time first shortened and then increased. The fastest setting was observed at 40% SS, with initial and final setting times of 126 and 321 min, respectively. Increasing SS from 20% to 40% enhanced the hydration reaction, promoted the formation of AFt and C-(A)-S-H gel, reduced residual unreacted phases, and refined the pore structure, resulting in the highest compressive and flexural strengths for M40. However, further increasing SS to 60% and 80% reduced the fly ash proportion and limited the sustained supply of reactive Si/Al species, despite increasing Ca2+ availability and alkalinity, thereby restricting later-age gel accumulation and pore refinement and ultimately weakening mechanical performance. Overall, the performance evolution of PSA is governed by the coupled effects of alkali/Ca supply from SS, sulfate supply from PG, and reactive Si/Al supply from FA. The optimal performance at 40% SS is attributed to the synergistic construction of an AFt framework and continuous pore filling by C-(A)-S-H gel.
Open AccessEffect of Steel Slag Content on the Performance and Hydration Mechanism of Phosphogypsum–Steel Slag–Fly Ash All-Solid-Waste Binders
To promote the synergistic utilization of phosphogypsum (PG), steel slag (SS), and fly ash (FA), a ternary all-solid-waste binder, namely PG-SS-FA cementitious material (PSA), was prepared. The effects of SS content on workability, setting behavior, mechanical properties, hydration products, pore structure, and microstructure were systematically investigated. The results showed that increasing SS content continuously reduced the fluidity of PSA, while the setting time first shortened and then increased. The fastest setting was observed at 40% SS, with initial and final setting times of 126 and 321 min, respectively. Increasing SS from 20% to 40% enhanced the hydration reaction, promoted the formation of AFt and C-(A)-S-H gel, reduced residual unreacted phases, and refined the pore structure, resulting in the highest compressive and flexural strengths for M40. However, further increasing SS to 60% and 80% reduced the fly ash proportion and limited the sustained supply of reactive Si/Al species, despite increasing Ca2+ availability and alkalinity, thereby restricting later-age gel accumulation and pore refinement and ultimately weakening mechanical performance. Overall, the performance evolution of PSA is governed by the coupled effects of alkali/Ca supply from SS, sulfate supply from PG, and reactive Si/Al supply from FA. The optimal performance at 40% SS is attributed to the synergistic construction of an AFt framework and continuous pore filling by C-(A)-S-H gel.
- Open Access
Facile Synthesis of Dual Modal Pore Structure Aerogel with Enhanced Thermal Stability
Regarding the preparation of aerogels by the co-precursor method, the skeleton collapse caused by its low strength is one of the key problems that needs to be solved urgently. In this study, vinyl-functionalized silica aerogel was prepared under atmospheric drying conditions (APD) with vinyltriethoxysilane (V) and water glass (W) as co-precursors. The performance of aerogels varied with the components of co-precursors. When the V:W ratio was 0.8, the aerogel had excellent properties of low thermal conductivity (0.0254 W/(m·K)), super hydrophobicity (hydrophobic angle of 160°), high specific surface area (890.76 m2/g), high porosity (96.82%), and low density (0.087 g/cm3). Test results of SEM and BET showed that the V:W ratio affected the pore structure. When the V:W ratio was around 0.8, the aerogel had a dual modal pore structure composed of both small (6–8 nm) and large (20–30 nm) mesopores, which could contribute to enhance the skeleton strength of the aerogel. On the other hand, the addition of vinyltriethoxysilane promoted the skeleton stability by reducing the capillary force. The vinyltriethoxysilane and water glass as novel co-precursor combinations can provide guidance for the preparation of aerogels under APD conditions.
Open AccessFacile Synthesis of Dual Modal Pore Structure Aerogel with Enhanced Thermal Stability
Regarding the preparation of aerogels by the co-precursor method, the skeleton collapse caused by its low strength is one of the key problems that needs to be solved urgently. In this study, vinyl-functionalized silica aerogel was prepared under atmospheric drying conditions (APD) with vinyltriethoxysilane (V) and water glass (W) as co-precursors. The performance of aerogels varied with the components of co-precursors. When the V:W ratio was 0.8, the aerogel had excellent properties of low thermal conductivity (0.0254 W/(m·K)), super hydrophobicity (hydrophobic angle of 160°), high specific surface area (890.76 m2/g), high porosity (96.82%), and low density (0.087 g/cm3). Test results of SEM and BET showed that the V:W ratio affected the pore structure. When the V:W ratio was around 0.8, the aerogel had a dual modal pore structure composed of both small (6–8 nm) and large (20–30 nm) mesopores, which could contribute to enhance the skeleton strength of the aerogel. On the other hand, the addition of vinyltriethoxysilane promoted the skeleton stability by reducing the capillary force. The vinyltriethoxysilane and water glass as novel co-precursor combinations can provide guidance for the preparation of aerogels under APD conditions.