<table id="qrkot"><ruby id="qrkot"></ruby></table>
  1. <acronym id="qrkot"></acronym>
  2. <tr id="qrkot"><s id="qrkot"></s></tr>
  3. <table id="qrkot"><option id="qrkot"></option></table>
  4. <big id="qrkot"><ruby id="qrkot"></ruby></big>
  5. <track id="qrkot"></track>
    蘇州混凝土水泥制品研究院有限公司

    頭部文案

    發布時間:2020-01-06 00:00:00
    全國建材科技期刊
    全國中文核心期刊
    中國科技論文統計源期刊
    萬方數據-數字化期刊群入網期刊
    中國學術期刊(光盤版)全文收錄期刊
    華東地區優秀科技期刊
    江蘇省期刊方陣“雙效期刊”
    中國期刊網全文收錄期刊
    中國科技期刊數據庫全文收錄期刊

    全部文章

    第二期

    玻璃微珠對OPC-SAC體系復合膠凝材料性能的影響及在3D打印中應用
    玻璃微珠對OPC-SAC體系復合膠凝材料性能的影響及在3D打印中應用
    • 吳 慶,王 剛,顧鵬遠,史文浩,李薛忠,許 耀,王石林
    2020年2期
    摘要
    引用本文
    摘??要:通過在OPC-SAC體系和礦物摻合料組成的復合膠凝材料中摻入中空玻璃微珠,制備出了符合擠出式建筑3D打印要求的材料。實驗結果表明,復合膠凝材料體系初凝時間為11~19min,終凝時間為20~45min;3d抗壓強度為50~70MPa,3d抗折強度為5~7MPa,28d抗壓強度為60~90MPa,28d抗折強度為7~12MPa;可滿足建筑3D打印的可擠出性、可建造性和可連續性的要求。Abstract:ThecompositecementitiousmaterialcomposedofrawmaterialasOPC-SACsystemandmineraladmixtureisusedtomeettherequirementsof3Dprintingofextrusionbuildingbyaddingthehollowglassbeads(HGB).Theresultsshowthattheinitialsettingtimeofthecompositecementitiousmaterialis11~19min,thefinalsettingtimeis20~45min,thecompressivestrengthof3dis50~70MPa,theflexuralintensityof3dis5~7MPa,thecompressivestrengthof28dis60~90MPa,andtheflexuralstrengthof28dis7~12MPa,whichcanmeettherequirementsoftheextrusion,constructionandcontinuityof3Dprintingofbuildings.
    曹香鵬,黃明洋.玻璃微珠對OPC-SAC體系復合膠凝材料性能的影響及在3D打印中應用[J].混凝土與水泥制品,2020(2):1-4. CAO X P,HUANG M Y.Effect of Hollow Glass Beads(HGB) on the Performance of OPC-SAC Composite Cementitious Materials and Its Application in 3D Printing [J].China Concrete and Cement Products,2020(2):1-4.
    海洋環境下珊瑚混凝土中鋼筋表面蝕坑發展的研究
    海洋環境下珊瑚混凝土中鋼筋表面蝕坑發展的研究
    • 吳 慶,王 剛,顧鵬遠,史文浩,李薛忠,許 耀,王石林
    2020年2期
    摘要
    引用本文
    摘??要:為了研究不同海洋環境下珊瑚混凝土中鋼筋表面蝕坑的發展情況,通過浸泡和干濕循環兩種養護方式來模擬水下區和潮汐區兩種環境,對比分析了兩種環境下珊瑚混凝土中HPB300鋼筋的銹積率、失重率以及其與蝕坑數目之間的關系;建立了表面蝕坑的尺寸分布模型并闡述了蝕坑的生長演變機理。研究表明,對比浸泡條件,在干濕循環條件下的混凝土中鋼筋失重率及銹積率更高,且在60d時蝕坑數量出現小規模的集中增長;不同時期鋼筋表面蝕坑尺寸分布函數均可表示為P=α+βeS,且其中大部分都屬于亞穩態的微觀蝕坑;在干濕循環養護方式下首先發育出尺寸較大的宏觀蝕坑;90d內隨著混凝土齡期的增長,干濕循環下蝕坑尺寸分布不均,而浸泡條件下蝕坑尺寸漸趨接近。?Abstract:Inordertostudythedevelopmentofcorrosionpitsonthesurfaceofsteelbarsincoralconcreteunderdifferentmarineenvironments,thecorrosionrateandweightlossrateofHPB300steelbarincoralconcreteandtherelationshipbetweenthemandthenumberofcorrosionpitswereobtainedandanalyzedbyimmersionanddry-wetcyclingcuringmethodstosimulatetheunderwaterandtidalenvironments.Thesizedistributionmodelofsurfacepitswasestablishedandthegrowthandevolutionmechanismofpitswasexpounded.Theresultsshowthatcomparedwithsoakingconditions,theweightlossrateandrustaccumulationrateofsteelbarsinconcreteunderdry-wetcyclingconditionsarehigher,andthenumberofcorrosionpitsincreasescentrallyinasmallscalein60d.ThesizedistributionfunctionofpitsonsteelbarsindifferentperiodscanbeexpressedasP=α+βeS,andmostofthembelongtometastablemicro-pits.Inthedry-wetcycliccuringmode,themacroscopicalcorrosionpitswithlargersizearefirstdeveloped.Within90d,withtheincreaseofconcreteage,thesizedistributionofpitsisunevenunderdry-wetcycling,whilethesizeofpitstendstoapproximateunderimmersionconditions.
    吳慶,王剛,顧鵬遠,等.海洋環境下珊瑚混凝土中鋼筋表面蝕坑發展的研究[J].混凝土與水泥制品,2020(2):5-9. WU Q,WANG G,GU P Y,et al.Development of Corrosion Pits on Reinforcement Surface in Coral Concrete under Ocean Environment[J].China Concrete and Cement Products,2020(2):5-9.
    觸發型微膠囊鋼筋阻銹劑的制備及性能研究綜述
    觸發型微膠囊鋼筋阻銹劑的制備及性能研究綜述
    • 宋子健,蔡煥春,劉永琦,葛云云,蔣林華,儲洪強,王婉怡
    2020年2期
    摘要
    引用本文
    摘要:從鋼筋混凝土的鋼筋銹蝕理論出發,結合混凝土材料科學,概述了微膠囊的制備方法與觸發機理,列舉了不同觸發型微膠囊阻銹劑的觸發方式及觸發過程;介紹了適用于研究微膠囊基本性能與表征的測試體系;總結了國內外關于微膠囊阻銹劑對混凝土性能影響的試驗成果,指出了研究現狀中的一些不足,并在此基礎上提出有待深入研究的問題。
    Abstract:Based on the theory of reinforcement corrosion of reinforced concrete, the preparation and triggering methods of microcapsules are summarized in combination with the material science of concrete. The trigger mechanisms and the triggering processes of different contact concrete microcapsules corrosion inhibitors are listed in detail. Some test systems, which are applicable to study basic properties and characterization of microcapsules, are introduced. The influences of microcapsules corrosion inhibitors on concrete properties are also reviewed. The disadvantages of the existed test methods are put forward. On the current basis, several key problems are proposed.
    宋子健,蔡煥春,劉永琦,等.觸發型微膠囊鋼筋阻銹劑的制備及性能研究綜述[J].混凝土與水泥制品,2020(2):10-13.
    SONG Z J,CAI H C,LIU Y Q,et al.A Review on Preparation and Properties of Trigger-type Microcapsule Corrosion Inhibitors[J].China Concrete and Cement Products,2020(2):10-13.
    基于溫度-應力試驗的摻膨脹劑混凝土抗裂性能研究
    基于溫度-應力試驗的摻膨脹劑混凝土抗裂性能研究
    • 紀憲坤,劉 猛,向 飛,饒蔚蘭,王海龍,劉 勇
    2020年2期
    摘要
    引用本文
    摘??要:通過溫度-應力試驗研究了鈣質和鎂質膨脹劑(Type-CaO,Type-MgO)對混凝土早期抗開裂性能的影響。結果表明,摻10%Type-MgO和Type-CaO膨脹劑混凝土的絕熱溫升較基準混凝土分別提高了3.6%和14.0%,斷裂溫度相對基準混凝土分別降低了9.7℃和1.7℃;約束條件下,摻10%Type-MgO膨脹劑混凝土的極限拉伸值和斷裂應力相對基準混凝土均提高約27%,而摻10%Type-CaO膨脹劑混凝土的極限拉伸值和斷裂應力與基準混凝土無明顯區別;數據表明,鎂質膨脹劑相比鈣質膨脹劑可以明顯提高混凝土的早期抗開裂性能,鈣質膨脹劑不宜用于大體積混凝土的裂縫控制。?Abstract:?Theearly-agecrackingresistanceofconcretewithCaOandMgOexpansiveagentwereinvestigatedbasedonthetemperature-stresstesting.Theresultsshowthatcomparedwithreferenceconcrete,theadiabatictemperatureriseofconcretewith10%MgOandCaOexpansiveagenttestedinadiabaticmodelincreasesby3.6%and14.0%,andthecrackingtemperaturedecreasesby9.7℃and1.7℃.Inrestrainedcondition,theultimateextensionvalueandcrackingstressofconcretewith10%MgOexpansiveagentincreaseby27%,whileconcretewith10%CaOexpansiveagenthasnosignificantdifferencewithreferenceconcrete.MgOexpansiveagentcouldevidentlyimprovetheearly-ageCrackingresistanceofconcrete,andCaOexpansiveagentcannotbeappliedtocrackcontrolofmassconcrete.
    紀憲坤,劉猛,向飛,等.基于溫度-應力試驗的摻膨脹劑混凝土抗裂性能研究[J].混凝土與水泥制品,2020(2):14-18.
    JI X K,LIU M,XIANG F,Study on the Early-age Cracking Resistance of Concrete with Expansive Agent Using Temperature-stress Testing Machine[J].China Concrete and Cement Products,2020(2):14-18.
    干濕循環下透水型生態混凝土硫酸鹽侵蝕試驗研究
    干濕循環下透水型生態混凝土硫酸鹽侵蝕試驗研究
    • 惠 洋1,劉榮桂1,徐榮進1,石 煒2,劉尚志3,郭彥領3
    2020年2期
    摘要
    引用本文
    摘??要:對透水型生態混凝土在不同濃度硫酸鹽干濕循環條件下進行了侵蝕試驗,測定了透水型生態混凝土的抗壓強度耐蝕系數、相對動彈性模量和質量變化率。并輔以SEM電鏡和EDS成分分析,探究了不同濃度硫酸鹽侵蝕下試件微觀損傷過程和侵蝕破壞規律。試驗結果表明:在硫酸鹽干濕環境下,透水型生態混凝土的抗壓強度耐蝕系數、質量變化率均呈現出先上升再下降的變化趨勢。濃度越高,侵蝕破壞的周期越短。通過微觀分析發現,試件侵蝕產物多為硫酸鈉結晶、鈣礬石和石膏以及少量碳化碳硫硅鈣石結晶。此外,實驗室烘干會加速試件本身和侵蝕結晶碳化,生成碳硫硅鈣石結晶。?Abstract:?Theeffectofperviousconcreteonsulfateattackunderdry-wetcycleswasstudiedwithtestingthecompressivestrengthcorrosion,resistancecoefficientandmass-changerateofperviousconcrete.ThroughSEMandEDScomponentanalysis,thedamageprocessandregularpatternunderdifferentconcentrationsofsulfateattackwereexplored.Thetestresultsshowthatunderthedry-wetenvironmentofsulfate,thecompressivestrength,corrosionresistancecoefficientandmasschangerateofperviousconcreteshowatrendoffirstincreasingandthendecreasing.Thehighertheconcentration,theshortertheperiodoferosiondamage.Throughmicro-analysis,it’sfoundthattheerosionproductsofthespecimensaremostlysodiumsulfatecrystal,ettringiteandgypsum.Atthesametime,it’sfoundthatlaboratorydryingcanacceleratethecarbonizationofthetestpieceandtheetchedcrystal.Astheconcentrationofthesulfatesolutionincreases,theamountoferodedcrystallizationincreasessignificantly,causingexpansiontocausecracking.
    惠洋,劉榮桂,徐榮進,等.干濕循環下透水型生態混凝土硫酸鹽侵蝕試驗研究[J].混凝土與水泥制品,2020(2):19-23.
    HUI Y,LIU R G,XU R J,et al.Research on Sulfate Erosion of Pervious Concrete under Dry-wet Circulation[J].China Concrete and Cement Products,2020(2):19-23.
    石膏對鋁酸鈣水泥混凝土力學與耐久性能的影響
    石膏對鋁酸鈣水泥混凝土力學與耐久性能的影響
    • 李亞麗1,趙蘭英1,張舜泉2
    2020年2期
    摘要
    引用本文
    摘??要:用二水石膏(CaSO4·2H2O)和α型半水石膏(α-CaSO4·0.5H2O)粉末分別部分取代鋁酸鈣水泥(CAC)制備了CAC混凝土,研究了其在不同摻量下對CAC混凝土力學與耐久性能的影響。試驗研究了CAC混凝土試樣的抗壓強度、劈裂抗拉強度、氯離子滲透性以及抗硫酸鹽的侵蝕性能,探究了CaSO4類型和摻量對各項指標的影響。結果表明,摻入CaSO4會降低CAC混凝土的早期強度,但可顯著抑制其后期強度衰減,當CaSO4·2H2O和α-CaSO4·0.5H2O摻量分別為6%和4%時,CAC混凝土的后期強度衰減量最低,Cl-擴散系數最小,且在Na2SO4侵蝕溶液中劣化程度最低。因此,CaSO4·2H2O和α-CaSO4·0.5H2O均可有效改善CAC混凝土的力學性能與耐久性能,兩者的最優摻量分別為6%和4%。?Abstract:?Theeffectof?CaSO4?withvariouscontentsonmechanicalpropertiesanddurabilityofcalciumaluminatecement(CAC)concretewasinvestigatedbypartiallysubstitutingCACpowderwithdihydrate(CaSO4·2H2O)andα-hemihydrate(α-CaSO4·0.5H2O).TheperformancesoftheCACconcretesampleswithdifferentmixingproportionsweretested,includingthecompressivestrength,splittingtensilestrength,chlorideionspenetrability,andsulfatecorrosionresistance.Also,theinfluenceofthetypeandamountof?CaSO4?onsuchpropertieswasdiscussed.TheresultsshowthattheearlystrengthofCACconcretecanbereducedduetotheincorporationof?CaSO4,whereastheattenuationoftheirlaterstrengthmaybeevidentlyinhibited.Whenthecontentsof?CaSO4·2H2Oandα-CaSO4·0.5H2O?are6%and4%,respectively,thestrengthattenuationofCACconcretereachestheminimum,andtheminimumchlorideionspermeabilitycoefficientisobserved.ThesulfatecorrosionresistanceofCACconcretecanbeobviouslyenhancedbyincorporating?CaSO4.Specifically,whentheamountsof?CaSO4·2H2O?andα-CaSO4·0.5H2O?areequalto6%and4%,respectively,thedeteriorationdegreeofCACconcreteexposedtoNa2SO4solutionisthelowest.Therefore,theincorporationof?CaSO4·2H2O?andα-CaSO4·0.5H2O?canimprovegreatlythemechanicalpropertiesanddurabilityofCACconcrete,andtheoptimumcontentsofthetwotypeof?CaSO4?are6%and4%,respectively.
    李亞麗,趙蘭英,張舜泉.石膏對鋁酸鈣水泥混凝土力學與耐久性能的影響[J].混凝土與水泥制品,2020(2):24-27,41. LI Y L,ZHAO L Y,ZHANG S Q.Effect of CaSO4 on Mechanical Properties and Durability of Calcium Aluminate Cement Concrete[J].China Concrete and Cement Products,2020(2):24-27,41.
    不同組成材料對混凝土韌性和抗沖擊性能的影響研究
    不同組成材料對混凝土韌性和抗沖擊性能的影響研究
    • 瞿 竹1,張 力1,王德輝2
    2020年2期
    摘要
    引用本文
    摘??要:為了解決高速公路橋梁伸縮縫槽口裂縫問題,研究了不同組成材料對混凝土韌性和抗沖擊性能的影響。研究結果表明,摻入輔助性膠凝材料和復合纖維提高了混凝土的韌性指數和沖擊能,摻入輔助性膠凝材料混凝土的韌性指數增大了13%~113%,沖擊能增大了-19%~84%。掃描電鏡、X射線衍射儀和能譜分析儀的測試結果表明,輔助性膠凝材料的摻入降低了纖維-水泥石界面過渡區Ca(OH)2和鈣礬石的含量,可改善混凝土的性能。?Abstract:?Inordertosolvethecrackingoftheexpansionjointslotofthehighwaybridge,theeffectsofdifferentcompositionsonthetoughnessandimpactresistanceofconcretewereinvestigated.Testresultsshowthat?theincorporationofsupplementarycementitiousmaterialsimprovethetoughnessindexandimpactenergyofconcrete.Thetoughnessindexofconcreteincreasesby11%~113%,andtheimpactenergyofconcreteincreasesby-19~84%.Concretecontainingfibershasalowriskofcracking.Accordingtothetestresultofscanningelectronmicroscope(SEM),X-raydiffraction(XRD)andenergydispersivespectroscopy(EDS),theincorporationofsupplementarycementitiousmaterialsreducesthecontentofcalciumhydroxide(CH)andettringite(AFt)intheinterfacialtransitionzoneoffiberandmatrix,andimprovesthepropertiesofconcrete.
    瞿竹,張力,王德輝.不同組成材料對混凝土韌性和抗沖擊性能的影響研究[J].混凝土與水泥制品,2020(2):28-31.
    QU Z,ZHANG L,WANG D H.Effects of Different Composition on the Toughness and Impact Resistance of Concrete[J].China Concrete and Cement Products,2020(2):28-31.
    地鐵盾構管片滲水部位泛白現象的試驗研究
    地鐵盾構管片滲水部位泛白現象的試驗研究
    • 趙 亮,黃毓彬
    2020年2期
    摘要
    引用本文
    摘??要:依托某在建地鐵工程,通過對管片混凝土、盾構注漿、地下水質、泛白物等進行試驗檢測和研究,并結合同批次管片拼裝后的實際情況,分析了管片滲水處泛白的原因。結果表明,管片滲水部位的泛白是盾構注漿漿體中的Ca(OH)2隨滲水水流進入管片,在管片表面與空氣中的CO2發生化學反應,產生白色的碳酸鈣,而不是管片混凝土自身的泛堿。?Abstract:?Thereasonofproducingwhitesubstancewereanalyzed,testingsoftheconcreteforsegment、groutingslurryforshield、qualityofundergroundwaterandthewhitesubstance,andtheactualsituationofthesamebatchofshieldsegmentthatalreadyinstalled.Theresultsshowthatthewhitesubstanceproducedonthesurfaceofshieldsegmentnearthepositionofitsseepageiswhitecalciumcarbonate,whichproducedbycalciumhydroxidetransferringtothesurfaceofshieldsegmentbywaterfromgroutingslurry,andcarbondioxidefromair,butnotcrystallinebloomofconcreteshieldsegment.
    趙亮,黃毓彬.地鐵盾構管片滲水部位泛白現象的試驗研究[J].混凝土與水泥制品,2020(2):32-36,46. ZHAO L,HUANG Y B.Study of a Phenomena that White Substance Produced on the Surface of Shield Segment in Metro near the Position of Its Seepage[J].China Concrete and Cement Products,2020(2):32-36,46.
    CRTSⅢ型板自密實混凝土配制及施工關鍵技術研究
    CRTSⅢ型板自密實混凝土配制及施工關鍵技術研究
    • 童小飛1,劉 磊2,王成啟2
    2020年2期
    摘要
    引用本文
    摘??要:基于CRTSⅢ型板自密實混凝土配制技術和研究經驗,結合商合杭客運專線CRTSⅢ型板自密實混凝土灌揭扳工藝性試驗及現場施工實踐,總結了CRTSⅢ型板自密實混凝土的配制方法、混凝土質量控制技術、施工質量控制技術。通過工藝性試驗確定了CRTSⅢ型板自密實混凝土最佳的灌注工藝流程、施工質量控制參數及指標,總結了CRTSⅢ型板自密實混凝土配制及施工質量控制關鍵要點。結果表明,擴展度為640~660mm,T500最佳范圍在4~6s,灌注時間為8~12min較好,應用此工藝能夠確保CRTSⅢ型板自密實混凝土大規模施工時的質量符合相關標準和設計要求,并大幅提升了灌注施工質量的穩定性。?Abstract:?BasedonthepreparationtechnologyandresearchexperienceofCRTSⅢslabself-compactingconcrete,andcombinedwiththetechnicaltestandfieldconstructionpracticeofCRTSⅢslabself-compactingconcreteinShanghe-hangpassengerdedicatedline,thepreparationmethod,concretequalitycontroltechnologyandconstructionqualitycontroltechnologyofCRTSⅢslabself-compactingconcretewerediscussed.Throughtheprocesstest,theoptimalinfusionprocess,constructionqualitycontrolparametersandindexesofCRTSⅢself-compactingconcreteweredetermined,andthekeypointsofCRTSⅢself-compactingconcretepreparationandconstructionqualitycontrolweresummarized.Theresultsshowthattheexpansiondegreeis640~660mm,theoptimumrangeofT500is4~6s,andthepouringtimeis8~12min.TheapplicationofthistechnologycanensurethatthequalityofCRTSⅢslabself-compactingconcretemeetstherelevantstandardsanddesignrequirementsinlarge-scaleconstructionandgreatlyimprovethequalitystabilityofpouring.
    童小飛,劉磊,王成啟.CRTSⅢ型板自密實混凝土配制及施工關鍵技術研究[J].混凝土與水泥制品,2020(2):37-41.
    TONG X F,LIU L,WANG C Q.Research on the Key Technology of Preparation and Construction of CRTSⅢ Self-compacting Concrete Slabs[J].China Concrete and Cement Products,2020(2):37-41.
    分布筋對ECC壓桿性能的影響研究
    分布筋對ECC壓桿性能的影響研究
    • 羅 敏1,2,胡世翔3
    2020年2期
    摘要
    引用本文
    摘??要:為了研究分布筋對ECC壓桿性能的影響,對5個ECC獨立壓桿進行了受壓試驗。研究表明,在ECC壓桿中有必要布置鋼筋,且僅配豎向分布筋不利于裂縫的控制;雙向配置0.0016的分布筋更有利于充分發揮材料的性能和控制試件使用階段的裂縫;試驗得到的ECC的壓桿有效影響系數均大于1.6;減少50%的分布筋用量后ECC壓桿仍可獲得與混凝土類似的壓桿強度。?Abstract:?InordertostudytheeffectofwebreinforcementonthebehaviorofECCstruts,atotalof5ECCisolatedstrutsweretestedtofailure.Theresultsofthisinvestigationreveal:reinforcementisindispensabletoECCstrutsandonlyverticaldistributionofreinforcementisnotconducivetocrackcontrol.Thebi-directionalwebreinforcementof0.0016ismoreconducivetotakingfulladvantageofthematerialsandcontrollingthecracksintheservicestageofspecimens.TheexperimentalstrutefficiencyfactorofallECCisolatedstrutsarelargerthan1.6.Comparingtoreinforcedconcretestruts,ECCisolatedstrutscanstillobtainsimilarstrutstrengthafterreducingthewebreinforcementusageby50%.
    羅敏,胡世翔.分布筋對ECC壓桿性能的影響研究[J].混凝土與水泥制品,2020(2):42-46.
    LUO M,HU S X.Study on Influence of Distributed Reinforcement of ECC Struts[J].China Concrete and Cement Products,2020(2):42-46.
    上一頁
    1
    2
    3

    關注《混凝土與水泥制品》

    總訪問量 468,401   網站統計

    官方微信公眾號關閉
    蘇州混凝土水泥制品研究院有限公司

    關于我們    |    聯系我們    |    訂購雜志    |    回到頂部

    版權所有:中國混凝土與水泥制品網  蘇ICP備10086386號   網站建設:中企動力 蘇州

    版權所有:中國混凝土與水泥制品網

    蘇ICP備10086386號

    網站建設:中企動力 蘇州

    国产偷窥摄综合色区
      <table id="qrkot"><ruby id="qrkot"></ruby></table>
    1. <acronym id="qrkot"></acronym>
    2. <tr id="qrkot"><s id="qrkot"></s></tr>
    3. <table id="qrkot"><option id="qrkot"></option></table>
    4. <big id="qrkot"><ruby id="qrkot"></ruby></big>
    5. <track id="qrkot"></track>