Query：
学者姓名：王雪芳
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-
Language
Clean All
Abstract ：
The efficient reuse of construction waste plays a vital role in fostering eco-friendly practices in the construction industry. However, the efficient application of recycled powder remains a significant challenge due to its low reactivity. In response to this issue, this study investigates the combination of recycled powder with slag to create a recycled powder-slag-based geopolymers (RPSG) through alkaline activation. To assess the performance of RPSG in erosion-prone environments, the effects of various sulfate types, concentrations, and erosion methods on its sulfate resistance were systematically evaluated. Advanced techniques, including SEM, XRD, FTIR, and MIP, were employed to analyze the microstructural changes. The results show that sulfate-induced expansive products initially improve, but eventually degrade, the performance of RPSG mortar. The stronger reactivity of Mg2 + causes decalcification, making the erosion effect of MgSO4 solution more severe. The wet-dry cycling process accelerates sulfate penetration during the wet phase, leading to faster generation of erosion products, while the crystallization of salts and shrinkage during the drying phase causes more significant degradation. These findings provide valuable theoretical insights for applying RPSG in sulfate-rich environments and serve as a practical reference for improving the durability design of geopolymer-based materials in engineering applications.
Keyword ：
Erosion mechanism Erosion mechanism Geopolymer Geopolymer Microstructure Microstructure Recycled powder Recycled powder Sulfate attack Sulfate attack
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lou, Ying , Kang, Sixiang , Wu, Wenda et al. Sulfate resistance of recycled powder-slag-based geopolymers under different erosive environments [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 462 . |
| MLA | Lou, Ying et al. "Sulfate resistance of recycled powder-slag-based geopolymers under different erosive environments" . | CONSTRUCTION AND BUILDING MATERIALS 462 (2025) . |
| APA | Lou, Ying , Kang, Sixiang , Wu, Wenda , Wang, Xuefang , Sun, Huaqiang , Chen, Feng et al. Sulfate resistance of recycled powder-slag-based geopolymers under different erosive environments . | CONSTRUCTION AND BUILDING MATERIALS , 2025 , 462 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The use of seawater and sea sand for the preparation of alkali-activated concretes plays an important role in reducing carbon emissions and alleviating resource scarcity. However, both alkali-activated concretes and products made from seawater and sea sand tend to exhibit significant drying shrinkage. Therefore, this study investigates the effect of the addition of seawater and sea sand on the basic properties and drying shrinkage properties of alkali-activated concretes, and regulates the properties of seawater and sea sand alkali-activated slag (SSAS) concretes with the key parameter of the alkali equivalent. Finally, the mechanism of SSAS drying shrinkage improvement was investigated using XRD, TG, MIP, and SEM. The results show that the addition of seawater and untreated sea sand accelerates the hydration reaction of alkali-excited cement and can significantly reduce its drying shrinkage. A moderate increase in alkali content can improve the compressive strength and reduce the drying shrinkage. However, an excessively high alkali content reduces the flexural strength. Finally, we propose the existence of a quantitative relationship between drying shrinkage, mass loss, and the evaporable water content, which better explains the mechanism of shrinkage variation. These effects are mainly attributed to changes in microstructure and phase composition. This study provides theoretical support for engineering applications of seawater-sea sand alkali-activated materials.
Keyword ：
alkali-activated concretes alkali-activated concretes alkali equivalent alkali equivalent drying shrinkage drying shrinkage sea sand sea sand seawater seawater
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, Jianbin , Kang, Sixiang , Shen, Yanran et al. Effects of Sand Type and Alkali Equivalent on Drying Shrinkage and Microstructure of Seawater-Sea Sand Alkali-Activated Slag Concrete [J]. | MATERIALS , 2025 , 18 (5) . |
| MLA | Zhang, Jianbin et al. "Effects of Sand Type and Alkali Equivalent on Drying Shrinkage and Microstructure of Seawater-Sea Sand Alkali-Activated Slag Concrete" . | MATERIALS 18 . 5 (2025) . |
| APA | Zhang, Jianbin , Kang, Sixiang , Shen, Yanran , Song, Chenhao , Lei, Haoliang , Xie, Wei et al. Effects of Sand Type and Alkali Equivalent on Drying Shrinkage and Microstructure of Seawater-Sea Sand Alkali-Activated Slag Concrete . | MATERIALS , 2025 , 18 (5) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
To address the significant carbon emissions caused by the cement industry and its contribution to the greenhouse effect, there is an urgent need for new construction materials that can substantially reduce the use of traditional Portland cement. Alkali-activated binders, known for their excellent performance and lower carbon footprint, have emerged as a promising alternative. Despite the numerous advantages of geopolymers, their practical application is hindered by challenges in processability required for construction techniques, such as pumping, spreading, and forming. This study focuses on enhancing the rheological properties of geopolymers through mechanochemical activation and exploring the modification mechanisms involved. Slag and fly ash raw materials were processed under different ball milling conditions, specifically varying ball milling rotation speed (BR) and ball milling time (BT). The mechanical properties, workability, and rheological behavior of geopolymer specimens were evaluated to identify the optimal milling parameters affecting these properties. Detailed analysis using XRD, SEM, and heat of hydration tests elucidated the phase composition, microstructural evolution, and thermal characteristics of mechanochemically modified geopolymers, providing insights into the fundamental mechanisms of mechanochemical activation modification. The results indicate a significant correlation between ball milling parameters and the rheological properties of geopolymers. The optimal milling regime was identified as grinding at a speed of 70r/min for 50 min. This specific milling condition imparts ideal properties to the geopolymer, including moderate yield stress (34.353 Pa), low plastic viscosity (0.452 Pa s), good thixotropy, and high 28d strength (53.28 MPa), without any significant shear thickening behavior. © 2024
Keyword ：
Ball milling rotation speed Ball milling rotation speed Ball milling time Ball milling time Geopolymer Geopolymer Mechanochemical activation Mechanochemical activation Rheological properties Rheological properties
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Kang, S. , Wang, J. , Hu, C. et al. The influence of mechanochemical activation on the rheological properties and strength development of geopolymer [J]. | Journal of Building Engineering , 2024 , 96 . |
| MLA | Kang, S. et al. "The influence of mechanochemical activation on the rheological properties and strength development of geopolymer" . | Journal of Building Engineering 96 (2024) . |
| APA | Kang, S. , Wang, J. , Hu, C. , Yao, H. , Sun, H. , Wu, W. et al. The influence of mechanochemical activation on the rheological properties and strength development of geopolymer . | Journal of Building Engineering , 2024 , 96 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Herein, the effects of the ionic types and content of alkali activator on the chloride-ion permeability of one-part alkali-activated nickel slag concrete were examined. The NT Build 492 method was adopted to measure the Cl- transport performance. In general, the total Cl- concentration in concrete decreases with the increase of penetration depth; however, the enrichment of Clconcentration in the sample is not obvious. Anions have more effect on 28-d compressive strength, while cations have more effect on chlorine-ion permeability. For the same Na2O content, SiO32- -activator and Na+-activator perform better than other anions and cations, while OH- and K+ perform worse than other ions. The chloride-ion permeability coefficient (DRCM) of concrete with Na2SiO3 is the lowest and that with KOH is the highest. The DRCM of concrete prepared with KOH is 1.93 times higher than that of concrete prepared with Na2SiO3. When the activator is Na2SiO3, the DRCM of concrete decreases with the increase in Na2O content when the Na2O content is less than 7%. However, when the Na2O content exceeds 7%, the DRCM of concrete increases with the increase in Na2O content.
Keyword ：
Alkali activator Alkali activator Chloride -ion ion permeability Chloride -ion ion permeability Ionic type Ionic type Na 2 O content Na 2 O content Nickel slag Nickel slag
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Xuefang , Lan, Qiaoling , Lin, Huanghua et al. Effects of alkali activator on the chloride-ion permeability of one-part alkali-activated nickel slag concrete [J]. | CASE STUDIES IN CONSTRUCTION MATERIALS , 2024 , 20 . |
| MLA | Wang, Xuefang et al. "Effects of alkali activator on the chloride-ion permeability of one-part alkali-activated nickel slag concrete" . | CASE STUDIES IN CONSTRUCTION MATERIALS 20 (2024) . |
| APA | Wang, Xuefang , Lan, Qiaoling , Lin, Huanghua , Wang, Yasi , Wu, Wenda , Xu, Liwei et al. Effects of alkali activator on the chloride-ion permeability of one-part alkali-activated nickel slag concrete . | CASE STUDIES IN CONSTRUCTION MATERIALS , 2024 , 20 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
为利用具有潜在活性的固体废弃物电炉镍渣，制备单组分电炉镍渣基地聚物修补砂浆.基于正交实验和极差分析，通过掺入掺合料并改变碱模数和碱当量等关键影响因素，对地聚物砂浆各项修补性能进行调控，获取满足修补性能的最优配合比，确定各因素对修补性能的影响主次.结果表明，最优配比是矿渣掺量为30%,粉煤灰掺量为30%,碱模数为1.2,碱当量为6.5%,其28 d抗压、抗折强度分别为90.29、 9.23 MPa,干燥收缩率为0.56×10~(-3), 14 d拉伸粘结强度为3.64 MPa,满足修补砂浆规范要求.经比较，矿渣掺量对修补砂浆性能调控影响最为显著.
Keyword ：
单组分 单组分 地聚物修补材料 地聚物修补材料 性能调控 性能调控 正交实验 正交实验 电炉镍渣 电炉镍渣 配合比 配合比
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 吴文达 , 张栋梁 , 王景杨 et al. 单组分电炉镍渣基地聚物修补材料制备与性能调控 [J]. | 福州大学学报(自然科学版) , 2024 , 52 (03) : 322-328 . |
| MLA | 吴文达 et al. "单组分电炉镍渣基地聚物修补材料制备与性能调控" . | 福州大学学报(自然科学版) 52 . 03 (2024) : 322-328 . |
| APA | 吴文达 , 张栋梁 , 王景杨 , 王雪芳 . 单组分电炉镍渣基地聚物修补材料制备与性能调控 . | 福州大学学报(自然科学版) , 2024 , 52 (03) , 322-328 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Buildings in coastal areas have been suffered from seawater immersion and tidal erosion for a long time, and the resistance of building structures to sulfate erosion has always been a concern. In order to solve this problem, this paper attempts to develop a new low-carbon green geopolymer cementitious material that is resistant to sulfate attack. The effect of this geopolymer material on sulfate erosion resistance is investigated in terms of alkali admixture, alkali modulus, water-binder ratio and fly ash admixture. In this paper, the geopolymer materials were tested for sulfate erosion resistance by dry-wet cycle sulfate erosion mechanism. It was shown that the contribution in improving the resistance of geopolymer materials to MgSO4 attack can be ranked as follows: water-binder ratio > fly ash content > alkali content > alkali modulus; Increasing alkali admixture, water-binder ratio and fly ash admixture and decreasing alkali modulus will promote the generation of gypsum in the specimen; Mg2+ in MgSO4 solution makes the volcanic ash reaction products decalcify, and the free Ca2+ and [SO4](2-) combine to generate gypsum, causing gypsum-type erosion damage in the specimen.
Keyword ：
drying-wetting cycles drying-wetting cycles geopolymers geopolymers strength & testing of materials strength & testing of materials sulfate resistance sulfate resistance
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lou, Ying , Ma, Shilong , Wang, Yuanda et al. Effect and evaluation of multi-factors on the performance of one-part geopolymer mortar against MgSO4 erosion [J]. | ADVANCES IN CEMENT RESEARCH , 2024 . |
| MLA | Lou, Ying et al. "Effect and evaluation of multi-factors on the performance of one-part geopolymer mortar against MgSO4 erosion" . | ADVANCES IN CEMENT RESEARCH (2024) . |
| APA | Lou, Ying , Ma, Shilong , Wang, Yuanda , Wu, Wenda , Wang, Xuefang . Effect and evaluation of multi-factors on the performance of one-part geopolymer mortar against MgSO4 erosion . | ADVANCES IN CEMENT RESEARCH , 2024 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
To study the effects of ion type and dosage of alkali activators on the carbonation of one-part alkali-activated nickel slag (OAANS) mortar, NaOH, Na2SiO3, NaOH+Na2SiO3, KOH, and KOH+Na2CO3 were used as activators. The carbonation depth, compressive strength, and microstructure (via MIP, XRD, and FTIR) were analyzed. Results show that OAANS mortar with K+ as the cation has significantly lower carbonation resistance than those with Na+. Compressive strength with K+ decreases initially after carbonation, then increases, while strength with Na+ grows rapidly early and slows later. With the same cation, mortars with OH- exhibit higher strength than those with SiO32- after 28 days of carbonation. Increasing alkali dosage promotes hydration, reduces porosity, and enhances carbonation resistance, with effects depending on the alkali activator type.
Keyword ：
alkali-activated nickel slag cement alkali-activated nickel slag cement Alkali activator Alkali activator carbonation carbonation dosage dosage ion type ion type
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Xuefang , Que, Yuanhao , Wang, Shengxian et al. Effects of alkali activator on the carbonation of one-part alkali-activated nickel slag cement [J]. | JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS , 2024 , 14 (4) : 627-644 . |
| MLA | Wang, Xuefang et al. "Effects of alkali activator on the carbonation of one-part alkali-activated nickel slag cement" . | JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS 14 . 4 (2024) : 627-644 . |
| APA | Wang, Xuefang , Que, Yuanhao , Wang, Shengxian , Kang, Sixiang , Zheng, Wenquan , Xu, Liwei et al. Effects of alkali activator on the carbonation of one-part alkali-activated nickel slag cement . | JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS , 2024 , 14 (4) , 627-644 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
To address the significant carbon emissions caused by the cement industry and its contribution to the greenhouse effect, there is an urgent need for new construction materials that can substantially reduce the use of traditional Portland cement. Alkali-activated binders, known for their excellent performance and lower carbon footprint, have emerged as a promising alternative. Despite the numerous advantages of geopolymers, their practical application is hindered by challenges in processability required for construction techniques, such as pumping, spreading, and forming. This study focuses on enhancing the rheological properties of geopolymers through mechanochemical activation and exploring the modification mechanisms involved. Slag and fly ash raw materials were processed under different ball milling conditions, specifically varying ball milling rotation speed (BR) and ball milling time (BT). The mechanical properties, workability, and rheological behavior of geopolymer specimens were evaluated to identify the optimal milling parameters affecting these properties. Detailed analysis using XRD, SEM, and heat of hydration tests elucidated the phase composition, microstructural evolution, and thermal characteristics of mechanochemically modified geopolymers, providing insights into the fundamental mechanisms of mechanochemical activation modification. The results indicate a significant correlation between ball milling parameters and the rheological properties of geopolymers. The optimal milling regime was identified as grinding at a speed of 70r/min for 50 min. This specific milling condition imparts ideal properties to the geopolymer, including moderate yield stress (34.353 Pa), low plastic viscosity (0.452 Pa s), good thixotropy, and high 28d strength (53.28 MPa), without any significant shear thickening behavior.
Keyword ：
Ball milling rotation speed Ball milling rotation speed Ball milling time Ball milling time Geopolymer Geopolymer Mechanochemical activation Mechanochemical activation Rheological properties Rheological properties
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Kang, Sixiang , Wang, Jize , Hu, Cheng et al. The influence of mechanochemical activation on the rheological properties and strength development of geopolymer [J]. | JOURNAL OF BUILDING ENGINEERING , 2024 , 96 . |
| MLA | Kang, Sixiang et al. "The influence of mechanochemical activation on the rheological properties and strength development of geopolymer" . | JOURNAL OF BUILDING ENGINEERING 96 (2024) . |
| APA | Kang, Sixiang , Wang, Jize , Hu, Cheng , Yao, Hongyu , Sun, Huaqiang , Wu, Wenda et al. The influence of mechanochemical activation on the rheological properties and strength development of geopolymer . | JOURNAL OF BUILDING ENGINEERING , 2024 , 96 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In this paper, the resistance of mechanically prepared one-part alkali-activated materials to external sulfuric acid attack was investigated by simulating realistic erosion environments in terms of sulfate type, concentration, and erosion mode. The macro-scopic properties of the specimens were measured at different ages. Microscopic analyses were performed by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), mercury intrusion porosimetry (MIP), and other techniques to obtain the effect of different erosion environments on the mechanical-force chemically prepared one-part alkali-activated materials against sulfate erosion. The study shows that the mechanical properties of the specimens showed a trend of increasing and then decreasing with the extension of erosion time. Compared with Na2SO4 erosion, the erosion damage was greatest when the sulfate containing Mg2+ was eroded in a wetting-and-drying cycle; the erosion products of Na2SO4 solution coexist in the form of calcite and gypsum, while the erosion products of MgSO4 solution mainly consist of gypsum.
Keyword ：
mechanochemistry mechanochemistry one-part alkali-activated materials one-part alkali-activated materials sulfate attack sulfate attack
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wu, Wenda , Ma, Shilong , Wang, Yuanda et al. Evaluation of Sulfate Resistance of One-Part Alkali-Activated Materials Prepared by Mechanochemistry [J]. | ACI MATERIALS JOURNAL , 2023 , 120 (2) : 37-52 . |
| MLA | Wu, Wenda et al. "Evaluation of Sulfate Resistance of One-Part Alkali-Activated Materials Prepared by Mechanochemistry" . | ACI MATERIALS JOURNAL 120 . 2 (2023) : 37-52 . |
| APA | Wu, Wenda , Ma, Shilong , Wang, Yuanda , Wang, Xuefang , Xu, Liwei , Ye, Shichang . Evaluation of Sulfate Resistance of One-Part Alkali-Activated Materials Prepared by Mechanochemistry . | ACI MATERIALS JOURNAL , 2023 , 120 (2) , 37-52 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
碳化导致混凝土碱度下降，对钢筋混凝土结构的耐久性造成严重危害。本文以Na_2SiO_3、NaOH和Na_2CO_3为碱激发剂，探究碱激发剂种类与其中的Na_2O当量对单组份碱激发镍渣水泥砂浆抗碳化性能的影响规律。研究表明：当Na_2O当量相同时，单组份碱激发镍渣水泥砂浆的抗碳化性能以NaOH单掺组试件最优，Na_2SiO_3单掺组试件最劣；Na_2CO_3取代部分Na_2SiO_3后可提升水泥砂浆试件抗碳化能力，而取代部分NaOH后，水泥砂浆试件抗碳化能力则与Na_2O当量有关；随着Na_2O当量的增加，Na_2SiO_3单掺组与Na_2SiO_3&Na_2CO_3(3∶1)复掺组试件的抗碳化性能呈先增强后减弱的趋势；NaOH单掺组试件前期的抗碳化性能不断增强，试件后期的抗碳化性能呈先增强后减弱的趋势；NaOH&Na_2CO_3(3∶1)复掺组试件前期的抗碳化性能有所改善，但后期的抗碳化性能反而下降。
Keyword ：
Na_2O当量 Na_2O当量 单组份 单组份 抗压强度 抗压强度 抗碳化性能 抗碳化性能 碱激发剂 碱激发剂 镍渣水泥 镍渣水泥
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 王雪芳 , 曾天鑫 , 周豪杰 . 碱激发剂对单组份碱激发镍渣水泥混凝土抗碳化性能的影响 [J]. | 硅酸盐通报 , 2023 , 42 (03) : 1008-1015 . |
| MLA | 王雪芳 et al. "碱激发剂对单组份碱激发镍渣水泥混凝土抗碳化性能的影响" . | 硅酸盐通报 42 . 03 (2023) : 1008-1015 . |
| APA | 王雪芳 , 曾天鑫 , 周豪杰 . 碱激发剂对单组份碱激发镍渣水泥混凝土抗碳化性能的影响 . | 硅酸盐通报 , 2023 , 42 (03) , 1008-1015 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
