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    蘇州混凝土水泥制品研究院有限公司

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    發布時間:2020-01-06 00:00:00
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    混凝土研究

    超高性能混凝土(UHPC)動態損傷機理綜述
    超高性能混凝土(UHPC)動態損傷機理綜述
    • 吳永魁,姚一鳴
    2021年第4期
    摘要
    引用本文
    摘 ? 要:總結分析了超高性能混凝土(UHPC)現有研究成果,綜述了其超高性能機理、單調拉伸和循環荷載下的本構關系、低周期疲勞狀態下的損傷過程及微觀損傷機理等,并對未來的研究方向提出了建議。 Abstract: Based on the summary and analysis of the research works of UHPC, the ultra-high performance mechanism of UHPC, the constitutive relation under monotone tensile and cyclic loads, the damage process under low cycle fatigue and the microscopic damage mechanism were summarized. Some suggestions for the future research direction were also provided.
    吳永魁,姚一鳴.超高性能混凝土(UHPC)動態損傷機理綜述[J].混凝土與水泥制品,2021(4):1-5,16. WU Y K,YAO Y M.Review of Dynamic Damage Mechanism of Ultra-high Performance Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):1-5,16.
    中老磨萬鐵路復雜環境下混凝土力學性能試驗研究
    中老磨萬鐵路復雜環境下混凝土力學性能試驗研究
    • 張友皓1,侯文崎1,2,席繼紅3
    2021年第4期
    摘要
    引用本文
    摘 ? 要:為配制滿足中老磨萬鐵路復雜環境下的不同強度等級混凝土,采用老撾產水泥等原材料和中國產減水劑,通過混凝土配合比設計、不同強度指標的力學性能試驗,研究了混凝土強度的尺寸效應和粉煤灰單摻摻量對C55混凝土力學性能的影響,確定了中老磨萬鐵路橋梁用C20~C60混凝土施工配合比。結果表明:按照本文的配合比設計,可以配制出滿足中國鐵路規范要求的不同強度等級混凝土;單摻粉煤灰情況下,中老磨萬鐵路橋梁用C55混凝土的粉煤灰適宜摻量為15%。所確定的C55混凝土施工配合比已成功應用于實橋混凝土施工。 Abstract: In order to prepare different strength grades of concrete which can meet the requirements of the complex engineering environment of China-Laos (Boten-Vientiane) railway, choosing the raw materials such as cement fabricated in Laos and water reducing agent made in China, the effects of size and the fly ash contents on the mechanical properties of C55 concrete were studied through the concrete mix proportion design and the mechanical property tests of different strength index. The concrete mix proportion of C20~C60 was determined. The results show that the properties of concrete which meet the requirements of China railway standards can be configured according to the mix proportion. In the case of the additive is fly ash only, the appropriate content of fly ash in C55 concrete for China-Laos (Boten-Vientiane) railway bridges is determined to be 15%. The test results was successfully applied to the concrete construction of real bridges.
    張友皓,侯文崎,席繼紅.中老磨萬鐵路復雜環境下混凝土力學性能試驗研究[J].混凝土與水泥制品,2021(4):6-10. ZHANG Y H,HOU W Q,XI J H.Experimental Study on Mechanical Properties of Concrete in the Complex Engineering Environment of China-Laos(Boten-Vientiane) Railway[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):6-10.
    混凝土3D打印質量影響因素及控制方法
    混凝土3D打印質量影響因素及控制方法
    • 楊 敏,來猛剛,竇艷寧,田 果
    2021年第4期
    摘要
    引用本文
    摘 ? 要:為更好地控制混凝土3D打印構件的成型質量,從構件造型實現程度、成型精度、表面紋理質量、力學性能、非薄壁構件的填充質量等方面介紹了混凝土3D打印質量評價指標。結合混凝土3D打印技術流程,研究了影響3D打印質量的主要因素,如打印材料、打印設備、控制系統、切片及路徑規劃算法、控制參數、打印環境條件等。并針對主要影響因素,采用定性分析與理論分析相結合的方法,提出了其相應的質量控制方法。 Abstract: In order to control the forming quality of concrete 3D printing components, a set of quality evaluation index of concrete 3D printing was introduced from the aspects of the realization degree of printing parts, forming precision, surface texture quality, mechanical properties of printing parts, filling quality of non thin-walled components. Combined with the whole technical process of concrete 3D printing, the main quality influencing factors were studied, including printing materials, printing equipment, control system, slicing and path planning algorithm, control parameters, printing environment conditions and so on. According to the main influencing factors, qualitative analysis and theoretical analysis were combined to further analyze, and the corresponding quality control measures were put forward.
    楊敏,來猛剛,竇艷寧,等.混凝土3D打印質量影響因素及控制方法[J].混凝土與水泥制品,2021(4):11-16. YANG M,LAI M G,DOU Y N,et al.Influencing Factors and Control Measures of Concrete 3D Printing Quality[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):11-16.
    納米SiO2改性陶?;炷羶鋈趽p傷規律及模型研究
    納米SiO2改性陶?;炷羶鋈趽p傷規律及模型研究
    • 冷玲倻1,張鵬飛2
    2021年第4期
    摘要
    引用本文
    摘 ? 要:為研究納米SiO2改性陶?;炷猎诓煌芤簝鋈诃h境下的抗凍性能,設計了四種溶液(水、硫酸鹽、碳酸鹽、復合鹽)凍融環境,采用快速凍融法,以質量損失率及相對動彈性模量為指標對其凍融損傷規律進行了研究,并基于試驗數據建立了抗凍性能退化模型。結果表明:在鹽溶液凍融環境下,陶?;炷临|量損失及相對動彈性模量高于水凍環境;當鹽溶液濃度相同時,硫酸鹽溶液凍融環境對混凝土的質量及動彈性模量的損傷較碳酸鹽溶液強,復合鹽類溶液凍融損傷居中;基于試驗數據建立的抗凍性能模型可較好地反映納米SiO2改性陶?;炷猎诓煌瑑鋈谌芤涵h境下的凍融損傷規律。 Abstract: In order to study the antifreeze performance of nano-SiO2 modified ceramsite concrete in different freeze-thaw solution environments, four freeze-thaw environments(water, sulfate, carbonate, compound salt) were designed. The rapid freeze-thaw method was used to study the freeze-thaw damage law using the mass loss rate and the relative dynamic elastic modulus as the measurement indicators. And based on the test data, a degradation model of frost resistance performance was established. The results show that the mass loss and relative dynamic modulus of elasticity of ceramsite concrete are higher in the freezing and thawing environment of salt solution than in the water and freezing environment. When the salt concentration is the same, the damage of the freeze-thaw environment of the sulfate solution to the concrete quality and dynamic elastic modulus is stronger than that of the carbonate, and the freeze-thaw damage ability of the compound salt solution is in the middle. The frost resistance model established based on the experimental data can better reflect the freeze-thaw damage law of nano-SiO2 modified ceramsite concrete in different freeze-thaw solution environments.
    冷玲倻,張鵬飛.納米SiO2改性陶?;炷羶鋈趽p傷規律及模型研究[J].混凝土與水泥制品,2021(4):17-22. LENG L Y,ZHANG P F.Research on Freeze-thaw Damage Law and Model of Nano-SiO2 Modified Ceramsite Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):17-22.
    硅灰對混凝土耐硫酸腐蝕性能試驗研究
    硅灰對混凝土耐硫酸腐蝕性能試驗研究
    • 陰琪翔1,2,趙巍平3,侯明姣1,2,杜健民2,程強強1
    2021年第4期
    摘要
    引用本文
    陰琪翔,趙巍平,侯明姣,等.硅灰對混凝土耐硫酸腐蝕性能試驗研究[J].混凝土與水泥制品,2021(4):23-26. YIN Q X,ZHAO W P,HOU M J,et al.Experimental Research on the Corrosion Resistance of Silica Fume to Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):23-26.
    輕質混凝土技術問題綜述
    輕質混凝土技術問題綜述
    • 袁 楠1,霍衛星2,羅 京3,王鈺奉3,李紀鵬3,張崇印3,段景寬4,王 瑛1, 史旦達1,吳新鋒1
    2021年第4期
    摘要
    引用本文
    摘 ? 要:從發展、分類、填料體積分數原理、輕量化原理及技術問題、工程應用、性能影響因素等方面對輕質混凝土材料進行了介紹,提出了目前存在的問題,展望了輕質混凝土的研究方向,可以為輕質混凝土的制備和應用提供參考。 Abstract: The development, classification, volume fraction principle of lightweight fillers, lightweight principle and technical issues, engineering application and performance influencing factors of lightweight concrete are introduced. The existing problems are put forward and the research direction of lightweight concrete are prospected, which can provide reference for the preparation and application of lightweight concrete.
    袁楠,霍衛星,羅京,等.輕質混凝土技術問題綜述[J].混凝土與水泥制品,2021(4):27-31. YUAN N,HUO W X,LUO J,et al.Review of Technical Problems of Lightweight Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):27-31.
    銹蝕鋼筋混凝土墻體壓彎承載力試驗研究
    銹蝕鋼筋混凝土墻體壓彎承載力試驗研究
    • 曲福來1,2,劉中良1,許 哲1,趙順波1,2
    2021年第4期
    摘要
    引用本文
    曲福來,劉中良,許哲,等.銹蝕鋼筋混凝土墻體壓彎承載力試驗研究[J].混凝土與水泥制品,2021(4):32-35,82. QU F L,LIU Z L,XU Z,et al.Experimental Study on Compression-bending Capacity of Corroded Reinforced Concrete Walls[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):32-35,82.
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