第四期_2021_《混凝土與水泥制品》雜志社

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第四期

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

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

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

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

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

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

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.

復合配筋預制混凝土管樁的抗彎抗剪性能試驗研究

劉雨松1，陳剛2,3，徐銓彪2,3，龔順風1，俞曉東4，劉承斌1

2021年第4期

摘要

引用本文

摘 ?要：為進一步推廣先張法預應力離心混凝土鋼絞線樁（PSC樁）在高烈度抗震區的應用，在PSC樁中加入與鋼絞線相同數量的螺紋鋼筋，研發了先張法預應力離心混凝土復合配筋鋼絞線樁（PSRC樁），并對3種規格共12根管樁試件進行了足尺抗彎及抗剪性能試驗，對比分析了PSC樁和PSRC樁在抗裂性能、抗彎（剪）承載力、變形能力及裂縫分布等方面的異同。試驗結果表明：非預應力鋼筋的配置對管樁抗裂性能影響不大，但可以提高管樁的抗彎和抗剪性能；PSRC樁的開裂彎矩和開裂剪力與PSC樁相近，但極限彎矩和極限剪力則分別提高了約55%和20%；與PSC樁相比，PSRC樁破壞時樁身裂縫數量較多，分布范圍較廣，但最大裂縫寬度較小。 Abstract: In order to further popularize the application of PSC piles in high intensity seismic areas, the same number of deformed steel bars as steel strands were added to PSC piles, and pretensioned centrifugal spun concrete piles with hybrid steel strands and reinforcing bars (PSRC piles) were developed. Through the bending and shear tests on twelve full-scale pile test specimens with three kinds of specifications, the differences of crack resistance, bending and shear bearing capacity, deformation capacity and crack distribution between PSC and PSRC piles were studied. The experiment results show that the arrangement of non-prestressing tendons has little effect on the crack resistance of piles, but can enhance the bending and shear bearing capacity. The cracking moment and shear force of PSRC piles are close to those of PSC piles, but the ultimate bending moment and shear force are about 55% and 20% higher, respectively. The non-prestressing tendons can also limit the crack development in pile body, the number of cracks for PSRC piles at failure is larger, the crack distribution is wider, but the maximum crack width is smaller.

劉雨松,陳剛,徐銓彪,等.復合配筋預制混凝土管樁的抗彎抗剪性能試驗研究[J].混凝土與水泥制品,2021(4):36-41. LIU Y S,CHEN G,XU Q B,et al.Experimental Study on Flexural and Shear Performance of Precast Concrete Piles with Composite Reinforcement[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):36-41.

小口徑混凝土排水管密封膠圈的設計研究

侯雷，談維漢

2021年第4期

摘要

引用本文

摘 ? 要：為解決實際工程中小口徑混凝土排水管的連接質量問題，通過排水管對接連接和內水壓力試驗，建立了不同硬度、不同壓縮率密封膠圈與排水管對接安裝難易程度及質量的關系，并針對實際工程，提出了合理的改進意見，以期為提高小口徑混凝土排水管的對接安裝質量提供參考。 Abstract: In order to solve the connection problems of small diameter concrete sewer pipe in practical engineering, through pipe interface connection and internal water pressure tests, the relationships between different hardness, different compression ratio of rubber gasket ring and pipe installation queality were established, and reasonable improvement suggestions were put forward for practical engineering, so as to provide a reference for improving the installation quality of small diameter concrete sewer pipe project.

侯雷,談維漢.小口徑混凝土排水管密封膠圈的設計研究[J].混凝土與水泥制品,2021(4):42-44. HOU L,TAN W Q.Design of the Rubber Gasket Ring for Concrete Sewer Pipes[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):42-44.

再生骨料混凝土在裝配式住宅構件中的應用

吳永杰，楊玉啟，趙利輝，呂麗萍，岳慧麗

2021年第4期

摘要

引用本文

摘 ? 要：為促進廢棄混凝土建筑垃圾資源化利用，選擇Ⅱ類再生骨料，分別以20%、30%和40%比例取代粗骨料，通過系統的配合比設計，確定了再生骨料摻量和生產用配合比，并結合實際工程，通過原材料質量和生產工藝控制，成功應用于裝配式住宅用混凝土構件的生產。 Abstract: In order to promote the resource utilization of waste concrete construction waste, class Ⅱ recycled aggregate was selected, and the replacement rates 20%, 30% and 40% of coarse aggregate were used respectively. Through systematic mix proportion design, the content of recycled aggregate and mix proportion for production were determined. Combined with the actual project, the control of raw material quality and production process were carried out to produce the prefabricated components successfully.

吳永杰,楊玉啟,趙利輝,等.再生骨料混凝土在裝配式住宅構件中的應用[J].混凝土與水泥制品,2021(4):45-48. WU Y J,YANG Y Q,ZHAO L H,et al.Application of Recycled Aggregate Concrete in Prefabricated Components[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(4):45-48.

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