Query：
学者姓名：刘晓
Refining：
Year
Type
Indexed by
Source
Complex
Co-Author
Language
Clean All
Abstract ：
In this study, three hydration heat controlling materials (HHCMs), respectively, containing pure hydroxyl (polyvinyl alcohol, PVA), carboxylic (polyacrylic acid, PAA) and ester groups (maleic acid-ethylene glycol ester, P(MA-EG)) were synthesized and mixed with cement-based materials, and the hydration heat and setting time of cement pastes and the SEMI adiabatic temperature rise and strength of mortars were tested. The results showed that PAA and P(MA-EG) reduced the peak value of hydration exothermic rate by 77.45% and 62.28%, respectively, and prolonged 54.14 h and 15.56 h, respectively. Mechanism studies showed that HHCMs containing carboxylic or hydroxyl groups adsorbed on cement particles by Ca2+ complexation, while HHCMs containing ester groups hydrolyzed to carboxylic groups in alkaline cement pastes, which hydrolysis rate changed with the hydration temperature of cement-based materials to regulate the hydration process. This study aims to provide technical feasibility and theoretical basis for exploring new avenues of synthesizing HHCMs with different functional groups.
Keyword ：
functional group functional group complexation complexation thermal crack thermal crack molecular design molecular design hydration heat controlling materials hydration heat controlling materials
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Sun, Xinru , Liu, Xiao , Wang, Simai et al. Effect of functional groups of hydration heat controlling materials on cement hydration and its mechanism [J]. | JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS , 2024 , 13 (8) : 1193-1207 . |
| MLA | Sun, Xinru et al. "Effect of functional groups of hydration heat controlling materials on cement hydration and its mechanism" . | JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS 13 . 8 (2024) : 1193-1207 . |
| APA | Sun, Xinru , Liu, Xiao , Wang, Simai , He, Rui , Guo, Jin , Bai, Xiabing et al. Effect of functional groups of hydration heat controlling materials on cement hydration and its mechanism . | JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS , 2024 , 13 (8) , 1193-1207 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In order to quantitatively study the influence of the weakening of the disconnectable coupling joint (DC joint) on the retaining structure, the pre-axial force retention performance of the steel support, the axial force of the steel support, the horizontal displacement of the diaphragm wall, and the ground settlement around the foundation pit were monitored during the construction of the foundation pit. The evolution process of the monitoring data was analyzed, and the corresponding numerical model verified by the monitoring data was established. The influence of the yield load of the DC joint, the initial compression stiffness, and the weakening of the pre-axial force on the stability of the retaining structure was studied by numerical simulation. The results show that the pre-axial force of steel support is only 67% of the design value when the soil below is not excavated within 24 h. The DC joint has a significant weakening effect on the steel support, which is unfavorable for the stability control of the foundation pit retaining structure. The pre-axial force and initial bending stiffness have a great influence on the stability of the retaining structure. When the yield load is not lower than that of the row piles, the DC joint has no effect on the stability of the retaining structure. This model can predict and analyze the deformation trend under different working conditions to a certain extent, providing certain reference value for safety plans during construction.
Keyword ：
steel support steel support performance weakening performance weakening retaining structure retaining structure foundation pit foundation pit disconnectable coupling joint disconnectable coupling joint
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Xie, Zhitian , Liu, Xiao , Niu, Xiaokai et al. Study on the Influence of the Performance Weakening of the Disconnectable Coupling (DC) Joint of Steel Support on the Retaining Structure of a Foundation Pit [J]. | BUILDINGS , 2024 , 14 (5) . |
| MLA | Xie, Zhitian et al. "Study on the Influence of the Performance Weakening of the Disconnectable Coupling (DC) Joint of Steel Support on the Retaining Structure of a Foundation Pit" . | BUILDINGS 14 . 5 (2024) . |
| APA | Xie, Zhitian , Liu, Xiao , Niu, Xiaokai , Jian, Jialong , Xu, Chentao , Liao, Jiahui . Study on the Influence of the Performance Weakening of the Disconnectable Coupling (DC) Joint of Steel Support on the Retaining Structure of a Foundation Pit . | BUILDINGS , 2024 , 14 (5) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In this study, the aluminum sulfate and industrial aluminum mud solid waste were respectively used to prepare shotcrete accelerators (named as AFA and AFS, respectively). A comparative analysis of their performance was conducted, and the underlying mechanisms were investigated. Different concentrations of sulfuric acid (25 %, 30 %, 35 %, 40 %, 45 % 50 % respectively) and liquid to solid ratios (2:1, 3:1, 4:1, 5:1, 6:1) were employed for the acid leaching of aluminum mud, among which 35 % mass concentration of sulfuric acid and 3:1 of liquid to solid ratio were identified as the optimal conditions according to the setting and hardening performance of cement. AFS exhibited superior effectiveness on enhancing the rapid setting and early age strength in cement pastes and mortars compared to AFA. The working mechanisms of AFA and AFS were revealed via the examination of ionic concentrations and pH values in pore solution, as well as the evolution of hydration heat and hydration products during the hydration process. The results showed that AFS generated higher concentration of Al 3 + and SO 4 2- ions during hydration as compared to AFA thus promoted the formation of a larger amount of ettringite. Moreover, the introduction of both AFA and AFS into cement pastes significantly lowered the pH values in pore solution, and AFS was more obviously, which accelerated the cement hydration process. This study presents an innovative approach in utilizing industrial aluminum mud solid waste for the development of a novel accelerator with promising performance characteristics, opening up new opportunities for its wide range of application.
Keyword ：
Cement hydration Cement hydration Ionic concentrations Ionic concentrations Solid waste utilization Solid waste utilization Aluminum mud Aluminum mud Shotcrete accelerator Shotcrete accelerator
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Xie, Hui , Feng, Pan , Liu, Xiao et al. A novel shotcrete accelerator prepared from industrial aluminum mud waste and its influence on cement hydration [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 435 . |
| MLA | Xie, Hui et al. "A novel shotcrete accelerator prepared from industrial aluminum mud waste and its influence on cement hydration" . | CONSTRUCTION AND BUILDING MATERIALS 435 (2024) . |
| APA | Xie, Hui , Feng, Pan , Liu, Xiao , Liu, Xin , Wang, Wei , Chen, Jin et al. A novel shotcrete accelerator prepared from industrial aluminum mud waste and its influence on cement hydration . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 435 . |
| Export to | NoteExpress RIS BibTex |
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Guan, Jianan , Liu, Xiao , Liu, Shaojing et al. Comb polymer with ionic side chains as a novel dispersant for cement slurries: Synthesis, characterization and working mechanism (vol 35, 104323, 2024) [J]. | ADVANCED POWDER TECHNOLOGY , 2024 , 35 (7) . |
| MLA | Guan, Jianan et al. "Comb polymer with ionic side chains as a novel dispersant for cement slurries: Synthesis, characterization and working mechanism (vol 35, 104323, 2024)" . | ADVANCED POWDER TECHNOLOGY 35 . 7 (2024) . |
| APA | Guan, Jianan , Liu, Xiao , Liu, Shaojing , Gao, Ruijun , Wang, Ziming , Cui, Suping . Comb polymer with ionic side chains as a novel dispersant for cement slurries: Synthesis, characterization and working mechanism (vol 35, 104323, 2024) . | ADVANCED POWDER TECHNOLOGY , 2024 , 35 (7) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Although the side chain ionizability (the adsorption group density and adsorption space are changed) of polycarboxylate superplasticizer (PCE) serve as the key structural parameter in affecting the cement hydration, its effect on cement hydration is unclear. Based on PCE with nonionizable side chain (NSC-PCE) and the PCE with ionizable side chain (ISC-PCE), the influence of the side chain ionizability of PCE on the hydration behavior of cement was studied. Compared with NSC-PCE, ISC-PCE has a stronger ability to change the migration of water and ions, thus delaying the crystal nucleation and growth of cement hydration (better morphology and distribution, the crystal size was reduced by more than 20 %), increasing the crystal growth index (tendency toward spherical growth), prolonging the phase boundary reaction (reduce micro-cracks), which was conducive to the formation of more uniform and dense crystals (good strength, ISC-PCE: 50.0 MPa > NSC-PCE: 49.2 MPa > Blank: 48.7 MPa). These findings provide the design basis and theoretical guidance for the innovative development of PCE.
Keyword ：
Hydration Hydration Mechanism Mechanism Side chain ionizability Side chain ionizability Polycarboxylate superplasticizer Polycarboxylate superplasticizer
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Guan, Jianan , Liu, Shaojing , Liu, Xiao et al. Effect of side chain ionizability of polycarboxylate superplasticizer on cement hydration [J]. | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 436 . |
| MLA | Guan, Jianan et al. "Effect of side chain ionizability of polycarboxylate superplasticizer on cement hydration" . | CONSTRUCTION AND BUILDING MATERIALS 436 (2024) . |
| APA | Guan, Jianan , Liu, Shaojing , Liu, Xiao , Zhang, Gengsen , Lai, Guanghong , Gao, Ruijun et al. Effect of side chain ionizability of polycarboxylate superplasticizer on cement hydration . | CONSTRUCTION AND BUILDING MATERIALS , 2024 , 436 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本发明涉及建筑材料外加剂领域，尤其是涉及一种钢渣活性激发剂及其制备方法与应用，通过以氨基酸、葡萄糖和有机溶剂为原料合成一种富含更多络合基团的糖胺，并调整与醇胺和无机盐的比例组成一种钢渣活性激发剂，对于提高转炉钢渣在建材领域中的应用有着积极的促进作用。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 王剑锋 , 周永芳 , 常磊 et al. 一种钢渣活性激发剂及其制备方法与应用 : CN202310044236.4[P]. | 2023-01-29 . |
| MLA | 王剑锋 et al. "一种钢渣活性激发剂及其制备方法与应用" : CN202310044236.4. | 2023-01-29 . |
| APA | 王剑锋 , 周永芳 , 常磊 , 刘辉 , 刘晓 , 马晓宇 et al. 一种钢渣活性激发剂及其制备方法与应用 : CN202310044236.4. | 2023-01-29 . |
| Export to | NoteExpress RIS BibTex |
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 ：
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 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 |
Export
| Results： |
Selected to |
| Format： |
