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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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    第二期

    論文重合率自檢
    論文重合率自檢
    摘要
    引用本文
    碳化與氯鹽共同作用下混凝土劣化的研究綜述
    碳化與氯鹽共同作用下混凝土劣化的研究綜述
    • 肖薇薇1,張紀剛1,2,張君博3,王鵬剛1,2,金祖權1,2,劉錦昆4
    2019年第12期
    摘要
    引用本文
    摘 要:碳化作用與高濃度氯離子侵蝕雙重作用下的混凝土結構更容易發生耐久性問題。通過分析碳化作用與氯離子侵蝕對混凝土的破壞機理,根據國內外學者對碳化與氯離子侵蝕共同作用下的相關研究,綜述了碳化與氯離子侵蝕共同作用下的相互影響及原因,并指出了未來試驗研究方向和建議。 Abstract: Based on the analysis of the damage mechanism of carbonation and chloride ion erosion on concrete, the research summarizes the interaction between carbonation and chloride ion erosion and the reasons, and points out the research directions and suggestions in the future.
    肖薇薇,張紀剛,張君博,等.碳化與氯鹽共同作用下混凝土劣化的研究綜述[J].混凝土與水泥制品,2019(12):24-28. XIAO W W,ZHANG J G,ZHANG J B,et al.Summary of the Research on Concrete Degradation under Combined Action of Carbonation and Chloride[J].China Concrete and Cement Products,2019(12):24-28.
    沖擊回波法評價混凝土質量研究綜述
    沖擊回波法評價混凝土質量研究綜述
    • 趙 祺1,桑 源1,高金麟1,楊英姿1,隋良志2,朱衛中1,3
    2019年第12期
    摘要
    引用本文
    摘 要:回顧了沖擊回波法在評價混凝土質量的研究現狀和主要應用,介紹了沖擊回波法的基本原理,分析了該方法在評價混凝土強度、檢測構件尺寸、缺陷以及評價混凝土耐久性方面的原理及應用,總結了該方法評價混凝土質量的優勢和不足,為今后該技術廣泛的工程應用提出了進一步的研究方向。 Abstract: This paper reviews the current situation and main application of impact-echo method in evaluating the quality of concrete. Firstly, the basic principle of impact-echo method is introduced. And then principles and applications are analyzed in evaluating concrete strength, detecting structure size and defects, as well as evaluating concrete durability. Meanwhile, the advantages and disadvantages of this method to assess concrete quality are summarized. Finally, further research directions are pointed out for the wide range of engineering applications of this novel technology in the future.
    低收縮高黏結黑色高性能混凝土的性能試驗研究
    低收縮高黏結黑色高性能混凝土的性能試驗研究
    • 夏中升1,2,沙建芳1,2,劉建忠1,2,郭 飛1,2,徐海源1,2
    2019年第12期
    摘要
    引用本文
    摘 要:研究了著色劑、外加劑摻量、配合比參數等對混凝土力學性能、水化產物形成、收縮變形性能、耐磨損能力的影響規律,再通過對既有混凝土界面進行不同的預處理方式,研究了界面粗糙度、干燥狀態等對新舊混凝土界面黏結性能的影響。結果表明:高摻量鐵黑降低混凝土力學性能,碳黑與鐵黑復配有助于提升力學性能;著色劑粒子的加入有助于氫氧化鈣的結晶形成,但對于鈣礬石影響較??;混凝土的耐磨損性能與水膠比、含氣量等試驗參數相關,降低漿體含氣量、選取合適的水膠比來獲得較高的基體強度,可提升混凝土的耐磨損性能。采用膠材水化溫升抑制和收縮補償復合技術,可實現混凝土分階段全過程收縮變形調控。較高的界面混凝土強度等級、較大的表面粗糙度以及表面預濕處理,有助于提高新舊混凝土界面黏結性能。 Abstract: The influence mechanism of colorants, admixtures and mix parameters on the surface color and workability of concrete, as well as its influence on the mechanical properties, shrinkage and deformation properties and wear resistance of concrete were studied. In addition, the influence of interface roughness and drying state on the bonding properties of new and old concrete interface was studied by different pretreatment methods of existing concrete interface. The results show that high content of iron black reduces the mechanical properties of concrete, and the combination of carbon black and iron black helps to improve the mechanical properties. The addition of colorant particles helps to form calcium hydroxide crystals, but has little effect on ettringite. The abrasion resistance of concrete is related to the test parameters such as water-binder ratio and air content. Reducing the air content of slurry and choosing appropriate water-binder ratio to obtain higher matrix strength can improve the abrasion resistance of concrete. By using hydration temperature rise inhibitor and high performance expansion agent, shrinkage suppression compensation can be realized in the whole stage. Higher strength grade of interfacial concrete, greater surface roughness and surface pre-wetting treatment are helpful to improve the interfacial bonding performance of new and old concrete.
    夏中升,沙建芳,劉建忠,等.低收縮高黏結黑色高性能混凝土的性能試驗研究[J].混凝土與水泥制品,2019(12):12-17. XIA Z S,SHA J F,LIU J Z,et al.Experimental Study on Performance of Low Shrinkage and High Bond Black High Performance Concrete[J].China Concrete and Cement Products,2019(12):12-17.
    預制混凝土箱涵結構設計理論與施工技術研究綜述
    預制混凝土箱涵結構設計理論與施工技術研究綜述
    • 何建平,蔡玉軍,孫建龍
    2019年第12期
    摘要
    引用本文
    摘 要:結合預制混凝土箱涵的設計理論和施工方法,深入分析了現有預制混凝土箱涵結構力學簡化計算方法、有限元數值模擬分析方法。系統論述了現澆法、直接頂進工法和管幕-箱涵法的研究概況、進展及其優勢進行了系統地論述與總結。并在此基礎上,提出了研究中存在的關鍵技術和具體問題,探討了預制混凝土箱涵結構的發展前景及趨勢。 Abstract: According to the design theory and construction method of underground precast concrete box culvert, two structural calculation methods, simplified calculation of structural mechanics and finite element numerical simulation, and several kinds of construction methods of box culvert are discussed, including cast-in-place method, jacking method and pipe-curtain-box culvert method et al. Combined with existing research, the research status and hot spots at home and abroad are analyzed systematically, summary have also been given in this paper. On this basis, some problems existing in the research are put forward, and the development prospect of underground box culvert is forecasted.
    何建平,蔡玉軍,孫建龍.預制混凝土箱涵結構設計理論與施工技術研究綜述[J].混凝土與水泥制品,2019(12):33-37+42. HE J P,CAI Y J,SUN J L.Summary of the Research on Design Theory and Construction Technology of Precast Concrete Box Culvert Structure[J].China Concrete and Cement Products,2019(12):33-37+42.
    蒸壓無石棉纖維水泥板鼓泡分層現象原因及解決措施
    蒸壓無石棉纖維水泥板鼓泡分層現象原因及解決措施
    • 徐定豐
    2019年第12期
    摘要
    引用本文
    摘 要:結合實際生產,分析了蒸壓無石棉纖維水泥板生產過程中鼓泡分層現象的原因,并結合實際生產,從提高坯料黏結力(優化原材料加工處理、回水回料控制、外加劑的應用、板材的壓制工藝、優化預養、蒸養制度等)和優化養護制度出發,提出了相應的解決措施,以期為蒸壓無石棉纖維水泥板的生產提供參考借鑒。 Abstract: Based on the actual production, the causes of the bubble and layering phenomenon in the production process of autoclaved asbestos-free fiber cement board were analyzed, and in combination with the actual production, in order to improve the bonding strength of the blank (optimize the processing and treatment of raw materials, return water and return material) Control, application of additives, pressing process, optimization of pre curing, steam curing system, etc.) and optimization of curing system, the corresponding solutions are put forward in order to provide a reference for the production of steam pressed asbestos-free fiber cement board.
    徐定豐.蒸壓無石棉纖維水泥板鼓泡分層現象原因及解決措施[J].混凝土與水泥制品,2019(12):38-42. XU D F.Causes and Solutions of the Bubbling and Delamination in Autoclaved Asbestos-Free Fiber Cement Board[J].China Concrete and Cement Products,2019(12):38-42.
    摻鎳鐵渣-礦渣復合微粉混凝土配合比設計
    摻鎳鐵渣-礦渣復合微粉混凝土配合比設計
    • 祁 皚,劉旭宏,楊綿越,李 征
    2019年第12期
    摘要
    引用本文
    摘 要:以配制強度等級為C30、C35,坍落度達100~140 mm的摻鎳鐵渣-礦渣復合微粉混凝土(鎳-礦混凝土)為例,進行了鎳-礦混凝土的配合比設計。首先,測定了鎳鐵渣-礦渣復合微粉摻量為10%~50%的復合水泥膠砂的28d抗壓強度,定義了不同復合微粉摻量下的復合水泥強度折減系數。然后,以普通混凝土配合比設計方法中的保羅米公式為基準,采用復合水泥強度折減系數對其進行修正,初步計算了復合微粉摻量為10%~50%的鎳-礦混凝土配合比。最后,經過試配和調整,配制出了滿足強度和坍落度要求的C30、C35鎳-礦混凝土,從而確定了最終配合比。試驗結果表明:對于鎳-礦混凝土,該配合比設計方法是可行的。 Abstract: Simply replacing cement with ferronickel slag powder of the equal mass is often adverse to maintaining the concrete strength. Therefore, mix design of concrete containing a compound admixture of ferronickel slag-slag micro (F-S) powder (referred as F-S concrete hereafter) was investigated. The target concrete strength grade was C30 and C35, and the specified slump was 100~140 mm. This mix design consisted of the following three steps. Firstly, according to the tested 28 d compressive strength of the composite cement mortar with F-S powder content ranging from 10% to 50%, the strength reduction factor of composite cement mortar with different F-S powder content was defined. Secondly, the preliminary mix proportions of F-S concrete were calculated by the modified Bolomy’s formula. Thirdly, after several rounds of trial and adjustment, the final mix proportions of the target C30 and C35 F-S concrete were determined. Results from the experimental tests confirm the applicability of the proposed method to design the mix proportions of F-S concrete.
    祁皚,劉旭宏,楊綿越,等.摻鎳鐵渣-礦渣復合微粉混凝土配合比設計[J].混凝土與水泥制品,2019(12):7-11. QI A,LIU X H,YANG M Y,et al.Mix Proportion Design of Concrete Containing Compound Admixture of Ferronickel Slag-slag Micro Powder[J].China Concrete and Cement Products,2019(12):7-11.
    鎳鐵渣混凝土的力學性能、干縮行為及其與漿體孔結構的關系
    鎳鐵渣混凝土的力學性能、干縮行為及其與漿體孔結構的關系
    • 王 申,李保亮,曹瑞林,賈子健,張亞梅
    2020年1期 ? No.285 ? P1-5
    摘要
    引用本文
    摘要:制備了不同摻量的鎳鐵渣混凝土,對其抗壓強度、劈裂抗拉強度、彈性模量和干燥收縮進行了測試,并使用壓汞法對同配比凈漿的孔結構進行了表征。結果表明,鎳鐵渣混凝土的抗壓強度隨鎳鐵渣摻量的提高出現先提高后下降的現象,這與孔結構變化有顯著關系。當鎳鐵渣摻量在20%以上時,混凝土早期強度增長較為緩慢,經90 d齡期養護后基本可以彌補早期形成的強度差。鎳鐵渣的摻入降低了混凝土的劈裂抗拉強度,但混凝土的彈性模量提高。蒸汽養護可以一定程度激發鎳鐵渣的活性,但并不能彌補其取代水泥造成的強度損失。20%摻量以內的鎳鐵渣混凝土具有比純水泥混凝土較小的干燥收縮,這與鎳鐵渣摻入后混凝土孔隙率降低、彈性模量提高等相關。
    Abstract: Concrete with different FNS(Ferronickel slag) contents was prepared, and its compressive strength, splitting tensile strength, elastic modulus and drying shrinkage were tested. The pore structures of the pastes with the same proportions were analyzed by mercury intrusion porosimetry (MIP). The experimental results show that the compressive strength of FNS concrete increases firstly and then decreases as the FNS replacement goes higher, which has a significant correlation with the change of pore structures. When the FNS replacement is over 20%, the development of strength of FNS concretes is slower than that of plain concrete and this difference can be compensated after 90 days’ curing. Moreover, the FNS weakens the splitting tensile strength but improves the elastic modulus of concrete. The FNS can be partly activated by steam curing, but it cannot cover the loss of strength due to the decrease in cement content. FNS concrete with an FNS content less than 20% has a smaller drying shrinkage than plain concrete, which can be attributed to the lower porosity and the higher elastic modulus of concrete.
    王申,李保亮,曹瑞林,等.鎳鐵渣混凝土的力學性能、干縮行為及其與漿體孔結構的關系[J].混 凝土與水泥制品,2020(1):1-5.
    WANG S,LI B l,CAO R L,et al.Mechanical Properties, Drying Shrinkage and Their Relation with Pore Structure of Concrete with Ferronickel Slag[J].China Concrete and Cement Products,2020(1):1-5.
    超高性能混凝土配合比設計模型、水化硬化機理及微觀結構的研究進展
    超高性能混凝土配合比設計模型、水化硬化機理及微觀結構的研究進展
    • 張高展1,魏 琦1,丁慶軍2,葛競成1
    2020年1期 ? No.285 ? P6-10+15
    摘要
    引用本文
    摘要:從超高性能混凝土(UHPC)配合比設計模型入手,綜述了目前UHPC配合比模型研究現狀,并在此基礎上,介紹了其水化硬化和微觀結構形成機理,總結了UHPC現有的不足并展望了其未來研究的方向,可為輕質低收縮UHPC的設計和開發提供參考。
    Abstract: Starting with the Ultra-high Performance Concrete(UHPC) fit ratio design model, the current situation of UHPC co-comparison research is summarized. And on this basis, its hydration hardening and microstructure formation mechanism is introduced, the existing shortcomings of UHPC is summarized and the future research direction is look forward, which can provide a reference for the design and development of light low-shrink UHPC.
    張高展,魏琦,丁慶軍,等.超高性能混凝土配合比設計模型、水化硬化機理及微觀結構的研究進展[J].混凝土與水泥制品,2020(1):6-10+15.
    ZHANG G Z,WEI Q,DING Q J,et al.A Review on Model of Mixture Design, Mechanism of Hydration and Harden, Microstructure of Ultra-high Performance Concrete[J].China Concrete and Cement Products,2020(1):6-10+15.
    基于SO<sub>4</sub><sup>2</sup><sup>-</sup>吸附與反應的硬化水泥基材料中Cl<sup>-</sup>傳輸與固化機制
    基于SO42-吸附與反應的硬化水泥基材料中Cl-傳輸與固化機制
    • 周 瑩1,2,石 亮1,3,穆 松1,2
    2020年1期 ? No.285 ? P11-15
    摘要
    引用本文
    摘要:通過自行設計的離子空間傳輸試驗裝置,分析研究了硫酸鹽和氯鹽的空間傳輸性能,并通過測試硫酸鹽和氯鹽共存時產物的組成和形貌,分析硫酸根離子對氯離子固化行為的影響。結果表明,在SO42-與Cl-共存的情況下,Cl-在不同時間和空間傳輸量較純溶液時均有減小,說明SO42-會阻礙Cl-的傳輸;SO42-與Cl-均可與水泥基材料的水化產物發生反應,其中SO42-反應生成AFt,Cl-反應生成Friedel鹽,當兩者共存時,Friedel鹽生成量減少,說明SO42-會減弱Cl-的固化能力,從而減弱混凝土結構中氯鹽的腐蝕破壞程度。?Abstract:?Thespacetransportpropertiesofsulfateandchloridesaltswereanalyzedbyself-designedionspacetransfertestdevice.Thecompositionandmorphologyoftheproductsinthecoexistenceofsulfateandchloridesaltsweretestedtoanalyzethecuringbehaviorofsulfateionsagainstchlorideions.TheresultsshowthatinthecaseofcoexistenceofSO42-andCl-,Cl-decreasesindifferenttimeandspacethanpuresolution,indicatingthat?SO42-?willhinderthetransportofCl-.Both?SO42-?andCl-canreactwiththehydrationproductsofcement-basedmaterials,inwhich?SO42-?reactstoformAFt,andCl-reactstoformFriedel′ssalt.Whenthetwocoexist,theamountofFriedel′ssaltisreduced,indicatingthat?SO42-?willweakenthecuringabilityofCl-,therebyweakeningconcrete.Thedegreeofcorrosiondamageofchloridesaltsinthestructure.
    周瑩,石亮,穆松.基于SO42-吸附與反應的硬化水泥基材料中Cl-傳輸與固化機制[J].混凝土與水泥制品,2020(1):11-15.
    ZHOU Y, SHI L,MU S.Cl- Transport and Solidification Mechanism in Hardened Cement-based Materials Based on SO42- Adsorption and Reaction[J].China Concrete and Cement Products,2020(1):11-15.
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