Query：
学者姓名：刘晓
Refining：
Year
Type
Indexed by
Source
Complex
Co-Author
Language
Clean All
Abstract ：
This study aims to achieve further progress in application performance of polymers in cementbased materials. The objective is to establish the research direction of superplasticizers with ordered micro-sequence via the innovation of synthesis technology and to clarify the correlation between the specific motifs in the microstructures of superplasticizers and the properties of cement pastes. In this study, a novel comb-like polycarboxylate superplasticizer (PCE) was synthesized using isobutenyl polyethylene glycol (IPEG) and hydroxyethyl acrylate (HEA) by atom transfer radical polymerization (ATRP) (defined as A-CPCE). Comb-like PCE with the same molecular weight as A-CPCE was also produced via conventional free radical polymerization (defined as CPCE). The molecular properties of both polymers and the structural motifs of monomers therein were characterized via size exclusion chromatography (SEC), H-1 nuclear magnetic resonance (H-1 NMR), C-13 nuclear magnetic resonance (C-13 NMR) and MATLAB, and furthermore the adsorption behavior of PCE polymers on cement particles was analyzed. Together with the rheological and mechanical properties of cement-based materials, the relationship between micro-sequence distribution and macro-performance of PCEs was investigated. The results showed that the monomer sequence distribution in A-CPCE was AAE and AAA, and the probability of the acid-ether ratio of 4:1 was 16.54%, meaning that relatively uniform polymer species were obtained. The A-CPCE molecules exhibited the smaller hydrodynamic radius (R-h=11.7 nm) and stronger adsorption capacity (maximum was 2.3618 mg center dot g(-1)) in cement pastes, which was in good accordance with Langmuir isotherm model and pseudo-second order kinetic model. The dispersing power of PCEs correlated with the specific motifs in the microstructures, thus indicating that A-CPCE enhanced the rheological performances of cement paste and concrete. In addition, the compressive strengths of concrete containing A-CPCE after 3 d, 7 d and 28 d were 16.00 MPa, 28.30 MPa and 52.9 MPa, respectively, which were significantly higher than those of concrete with CPCE.
Keyword ：
Rheological properties Rheological properties Polycarboxylate superplasticizer Polycarboxylate superplasticizer Compressive strength Compressive strength Cement paste Cement paste Adsorption Adsorption Microstructure Microstructure
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lai, Guanghong , Liu, Xiao , Li, Shiyu et al. Novel synthesis of polycarboxylate superplasticizer through ATRP technique used in cement paste: Microstructure and effectiveness analysis [J]. | CASE STUDIES IN CONSTRUCTION MATERIALS , 2023 , 19 . |
| MLA | Lai, Guanghong et al. "Novel synthesis of polycarboxylate superplasticizer through ATRP technique used in cement paste: Microstructure and effectiveness analysis" . | CASE STUDIES IN CONSTRUCTION MATERIALS 19 (2023) . |
| APA | Lai, Guanghong , Liu, Xiao , Li, Shiyu , Xu, Yurui , Xia, Chunlei , Guan, Jianan et al. Novel synthesis of polycarboxylate superplasticizer through ATRP technique used in cement paste: Microstructure and effectiveness analysis . | CASE STUDIES IN CONSTRUCTION MATERIALS , 2023 , 19 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
<正>三乙醇胺（TEA）作为水泥混凝土中常用的早强组分，对早期强度发展有显著的促进作用。近年来随着喷射混凝土和液体无碱速凝剂的快速发展，三乙醇胺以其优良的早强特性逐渐得到广泛应用。然而，不同条件下由三乙醇胺
Keyword ：
早期强度 早期强度 凝结时间 凝结时间 三乙醇胺 三乙醇胺 水化 水化 速凝剂 速凝剂
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘晓 , 谢辉 , 罗奇峰 et al. 三乙醇胺对液体无碱速凝剂“促-抑”水泥早期水化的调控机理研究 [J]. | 材料导报 , 2023 , (09) : 1-15 . |
| MLA | 刘晓 et al. "三乙醇胺对液体无碱速凝剂“促-抑”水泥早期水化的调控机理研究" . | 材料导报 09 (2023) : 1-15 . |
| APA | 刘晓 , 谢辉 , 罗奇峰 , 王子明 , 崔素萍 , 夏春蕾 . 三乙醇胺对液体无碱速凝剂“促-抑”水泥早期水化的调控机理研究 . | 材料导报 , 2023 , (09) , 1-15 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
基于实验研究的混凝土材料耐久性评价周期长、成本高、效率低，传统经验公式对耐久性的预测精度有限且无法根据性能反推混凝土的配合比设计，因此开发新型高效的材料质量控制和性能预测工具已是当务之急。通过梳理建立机器学习模型的流程，总结常用算法的基本工作原理和优势，归纳基于机器学习的各耐久性指标预测算法，探讨其应用效果和发展方向，为机器学习技术在混凝土领域的深度开发和应用提供了依据。
Keyword ：
耐久性 耐久性 机器学习 机器学习 混凝土 混凝土 预测 预测 算法 算法
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘晓 , 王思迈 , 卢磊 et al. 机器学习预测混凝土材料耐久性的研究进展 [J]. | 硅酸盐学报 , 2023 , (08) : 1-12 . |
| MLA | 刘晓 et al. "机器学习预测混凝土材料耐久性的研究进展" . | 硅酸盐学报 08 (2023) : 1-12 . |
| APA | 刘晓 , 王思迈 , 卢磊 , 陈美祝 , 翟跃 , 崔素萍 . 机器学习预测混凝土材料耐久性的研究进展 . | 硅酸盐学报 , 2023 , (08) , 1-12 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
随着“双碳”战略目标和“节能环保”理念的实施，近年来基于绿色材料代替石化原料以及利用新技术手段实现高性能减水剂的节能制备与应用得到了显著进步和飞速发展，展现出巨大的应用潜能。为此，文中从绿色制备及低能耗合成技术两大方面系统综述了高性能减水剂的绿色与节能制备的优势特点，归纳了化学方法和技术原理，分析了其应用效果并展望了未来发展方向，为高性能减水剂材料的绿色与节能制备方法的研究开发提供设计依据。
Keyword ：
应用 应用 绿色 绿色 节能 节能 制备 制备 混凝土 混凝土 高性能减水剂 高性能减水剂
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘晓 , 赖光洪 , 夏春蕾 et al. 混凝土高性能减水剂的绿色与节能制备方法研究进展 [J]. | 高分子材料科学与工程 , 2023 , 39 (03) : 172-180 . |
| MLA | 刘晓 et al. "混凝土高性能减水剂的绿色与节能制备方法研究进展" . | 高分子材料科学与工程 39 . 03 (2023) : 172-180 . |
| APA | 刘晓 , 赖光洪 , 夏春蕾 , 宋建荣 , 王子明 , 崔素萍 et al. 混凝土高性能减水剂的绿色与节能制备方法研究进展 . | 高分子材料科学与工程 , 2023 , 39 (03) , 172-180 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In this paper, star-like polycarboxylate superplasticizer (SPCE) and comb-like polycarboxylate superplasticizer (CPCE) were prepared via atom transfer radical polymerization (ATRP) to study the mechanism of the effec-tiveness enhancement resulting from this transformation of topological structure. It was found that SPCE mol-ecules acted higher adsorption amount and more Ca2+ complexes, and formed a lower and more compact adsorbed layer and larger surface coverage with a flat conformation on cement surface, depending on more anchored points per unit volume. Through this mechanism, cement particles adsorbed by SPCE showed stronger dispersible capability and colloidal interaction forces (the steric force was dominant), resulting in lower yield stress and plastic viscosity of the cement paste containing SPCE which behaved as an ideal Bingham fluid. The aim of this study is to clarify the mechanistic correlation between topological structure evolution and effec-tiveness promotion for PCE.
Keyword ：
Surface layer (B) Surface layer (B) Adsorption (C) Adsorption (C) Dispersion (A) Dispersion (A) Superplasticizer Superplasticizer Rheology (A) Rheology (A) Cement paste (D) Cement paste (D)
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lai, Guanghong , Liu, Xiao , Song, Xiaofei et al. A mechanistic study on the effectiveness of star-like and comb-like polycarboxylate superplasticizers in cement pastes [J]. | CEMENT AND CONCRETE RESEARCH , 2023 , 175 . |
| MLA | Lai, Guanghong et al. "A mechanistic study on the effectiveness of star-like and comb-like polycarboxylate superplasticizers in cement pastes" . | CEMENT AND CONCRETE RESEARCH 175 (2023) . |
| APA | Lai, Guanghong , Liu, Xiao , Song, Xiaofei , Guan, Jianan , Wang, Ziming , Cui, Suping et al. A mechanistic study on the effectiveness of star-like and comb-like polycarboxylate superplasticizers in cement pastes . | CEMENT AND CONCRETE RESEARCH , 2023 , 175 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Chemical admixtures are indispensable functional ingredients in modern construction, and their raw materials for synthesis are mainly sourced from petrochemical products, leading to petrochemical resource consumption and environmental damage. Using biomass as a raw material for preparing chemical admixtures for concrete is an effective and environmentally friendly method that holds great promise for overcoming these environment problems and obtaining exceptional application properties. This work systematically addresses the recent research advances in chemical admixtures using polysaccharide, polyphenol biomass and biorefineries, including their preparation methods, application effects and environmental impact assessment. The results show that the molecular structures of polysaccharide and polyphenol biomass contain a large number of active functional groups, which help bio-based chemical admixtures to be prepared by acylation, sulfonation and/or graft copolymerization, significantly improving the dispersibility, water retention, retardation, anti-adhesion and durability of cement-based materials. Also, the use of biorefinery technology endows chemical admixtures with superior environmental performance. In addition, this review addresses the importance of the life cycle assessment (LCA) method in evaluating the environmental impacts of bio-based chemical admixtures and establishes that environmental pollution can be substantially minimized by optimizing the preparation process (e.g., use of renewable raw materials, adoption of biorefineries, etc.). This article gives an overview on bio-based chemical admixtures and their high-value utilization and ecological development that provide a theoretical basis for the design of energy-saving and low-cost bio-based chemical admixtures.
Keyword ：
LCA LCA Application Application Design synthesis Design synthesis Bio-based chemical admixtures Bio-based chemical admixtures Renewability Renewability Cementitious materials Cementitious materials
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Lai, Guanghong , Liu, Xiao , Li, Shiyu et al. Development of chemical admixtures for green and environmentally friendly concrete: A review [J]. | JOURNAL OF CLEANER PRODUCTION , 2023 , 389 . |
| MLA | Lai, Guanghong et al. "Development of chemical admixtures for green and environmentally friendly concrete: A review" . | JOURNAL OF CLEANER PRODUCTION 389 (2023) . |
| APA | Lai, Guanghong , Liu, Xiao , Li, Shiyu , Xu, Yurui , Zheng, Yunsheng , Guan, Jianan et al. Development of chemical admixtures for green and environmentally friendly concrete: A review . | JOURNAL OF CLEANER PRODUCTION , 2023 , 389 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In this study, two types of liquid alkali-free accelerators were prepared by aluminum sulfate (AF(1)) and aluminum mud wastes (AF(2)), and the life cycle assessment (LCA) in the preparation of AF(1) and AF(2) was compared. The LCA was considered from cradle to gate including raw materials used, transportation, and accelerator preparation based on the method ReCiPe2016. The results indicated that AF(1) had a higher environmental impact in all midpoint impact categories and endpoint indicators than that of AF(2), and AF(2) reduced 43.59% emission of CO2, 59.09% emission of SO2, 71% consumption of mineral resources, and 46.67% consumption of fossil resources than that of AF(1) respectively. As an environment-friendly accelerator, AF(2) had a better application performance than traditional accelerator AF(1.) When the dosage of accelerators was 7%, the initial setting times of cement pastes containing AF(1) and AF(2) were 4 min 57 s and 4 min 04 s respectively, the final setting times of cement pastes containing AF(1) and AF(2) were 11 min 49 s and 9 min 53 s respectively, and the compressive strengths at 1 d of mortars containing AF(1) and AF(2) were 7.35 MPa and 8.33 MPa respectively. This study aims to provide technical feasibility and environmental impact assessment for exploring new avenues of preparing environment-friendly liquid alkali-free accelerators with aluminum mud solid wastes. It has great potential in reducing carbon and pollution emissions and has a greater competitive advantage due to great application performance.
Keyword ：
Aluminum mud solid waste Aluminum mud solid waste Life cycle assessment Life cycle assessment Green production Green production Liquid alkali-free accelerator Liquid alkali-free accelerator
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Xiao , Xie, Hui , Luo, Qifeng et al. Mode of innovative green production for concrete engineering: life cycle assessment of accelerators prepared from aluminum mud wastes [J]. | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH , 2023 , 30 (32) : 79106-79119 . |
| MLA | Liu, Xiao et al. "Mode of innovative green production for concrete engineering: life cycle assessment of accelerators prepared from aluminum mud wastes" . | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 30 . 32 (2023) : 79106-79119 . |
| APA | Liu, Xiao , Xie, Hui , Luo, Qifeng , Yang, Kun , Xia, Chunlei , Guan, Jianan et al. Mode of innovative green production for concrete engineering: life cycle assessment of accelerators prepared from aluminum mud wastes . | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH , 2023 , 30 (32) , 79106-79119 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
高校课程思政是教育教学改革的创新方式，也是实现立德树人?三全育人的重要举措?创新性地以材料发展史为载体，分析其融合于专业课程思政的重要意义，并结合具体实例全方位论述材料发展史视角下课程思政教学的思政元素设计?教学步骤?育人功能?思政效果评价的整个过程，体现了知识传授与思政引领的深度融合与创新，可为高校教师设计与构建课程思政提供重要参考?
Keyword ：
课程思政 课程思政 教学设计 教学设计 发展史 发展史 材料学科 材料学科
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘晓 , 崔素萍 , 王子明 et al. 材料发展史视角下课程思政教学设计与构建 [J]. | 当代教育实践与教学研究 , 2022 , (7) : 162-164 . |
| MLA | 刘晓 et al. "材料发展史视角下课程思政教学设计与构建" . | 当代教育实践与教学研究 7 (2022) : 162-164 . |
| APA | 刘晓 , 崔素萍 , 王子明 , 王亚丽 , 孙诗兵 , 王剑锋 . 材料发展史视角下课程思政教学设计与构建 . | 当代教育实践与教学研究 , 2022 , (7) , 162-164 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
The objective of this study is to use the geopolymer technique to solidify/stabilize heavy metal contaminated soil. There are over 739,700 square meters of heavy-metal-contaminated sites in Taiwan; most sites are soil farmlands. These heavy metal contaminants in soil can also infiltrate into groundwater and cause more serious pollution problems. This study explores the possibility of using the geopolymer technique to solidify heavy metal contaminated soil (CS), stabilize heavy metal, and produce good mechanical and physical properties. The ground granulated blast furnace slag (GGBFS) was activated by an alkali solution to form a geopolymer binder that can be used to solidify CS and stabilize the heavy metal. The effect of GGBFS and CS mixing ratio on the mechanical and physical properties and the TCLP test was investigated. The test results show that the compressive strength of specimens made with a 1.5 CS/GGBFS ratio can reach 46.61 MPa and 47.66 MPa after curing for 14 and 28 days, respectively. TCLP tests show only 2 ppm Cu was detected from a geopolymer-treated contaminated soil sample. The influence of alkali solution, such as the molarity of the NaOH, SiO2/Na2O, and SiO2/Al2O3 molar ratio, were also evaluated. The specimens prepared with 8 M NaOH, 0.96 SiO2/Na2O, and 1.28 SiO2/Al2O3 molar ratio alkali solution have a compressive strength of 51.74 MPa and 58.63 MPa after 14 and 28 days of curing. The TCLP tests show no heavy metal ions leached from the sample.
Keyword ：
contaminated soil contaminated soil geopolymer geopolymer heavy metal heavy metal ground granulated blast furnace slag ground granulated blast furnace slag
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Chen, Yi-Chen , Ding, Yung-Chin , Lee, Wei-Hao et al. The Study on the Properties and TCLP of GGBFS-Based Heavy-Metal-Contaminated Soil Geopolymer [J]. | CRYSTALS , 2022 , 12 (7) . |
| MLA | Chen, Yi-Chen et al. "The Study on the Properties and TCLP of GGBFS-Based Heavy-Metal-Contaminated Soil Geopolymer" . | CRYSTALS 12 . 7 (2022) . |
| APA | Chen, Yi-Chen , Ding, Yung-Chin , Lee, Wei-Hao , Liu, Xiao , Li, Shiyu , Xie, Hui et al. The Study on the Properties and TCLP of GGBFS-Based Heavy-Metal-Contaminated Soil Geopolymer . | CRYSTALS , 2022 , 12 (7) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
As a nano-carbon material with excellent properties, Graphene oxide (GO) has been widely used in cement-based materials, and the negative effect of paste workability caused by GO agglomeration has also been widely concerning. In this study, a polycarboxylate-silane modified graphene oxide composite (PSG) was prepared by coupling polycarboxylate molecules to the surface of graphene oxide (GO) via a reaction with vinyl triethoxysilane. The effects of GO and PSG on the cement paste and the mechanisms underpinning these effects were investigated using fluidity and rheological parameter measurements, and ion concentration and zeta potential analyses. It was found that, in the aqueous phase of the paste, the polycarboxylate molecular chains on the surface of the PSG complexed with calcium ions (Ca2+), thereby preventing Ca2+ from bridging the GO sheets, and thus stabilizing the surface potential and the electrostatic repulsion. This prevented the PSG from forming an agglomerate structure such as that formed by GO under the same conditions, thereby substantially enhancing workability of paste with nano-carbon material. This study provides some new foundations and ideas for the further application of graphene oxide materials in cement-based materials.
Keyword ：
modified modified mechanism mechanism workability workability graphene oxide graphene oxide
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Shuang , Li, Shiyu , Wang, Qin et al. Effect of Polycarboxylate-Silane Modified Graphene Oxide Composite on the Properties of Cement Pastes [J]. | MATERIALS , 2022 , 15 (15) . |
| MLA | Liu, Shuang et al. "Effect of Polycarboxylate-Silane Modified Graphene Oxide Composite on the Properties of Cement Pastes" . | MATERIALS 15 . 15 (2022) . |
| APA | Liu, Shuang , Li, Shiyu , Wang, Qin , Zhang, Ruifeng , Liu, Xiao . Effect of Polycarboxylate-Silane Modified Graphene Oxide Composite on the Properties of Cement Pastes . | MATERIALS , 2022 , 15 (15) . |
| Export to | NoteExpress RIS BibTex |
Export
| Results： |
Selected to |
| Format： |
