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    蘇州混凝土水泥制品研究院有限公司

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    第八期

    骨料和配合比參數對透水混凝土基本性能影響
    骨料和配合比參數對透水混凝土基本性能影響
    • 姜 騫1,2,周華新1,2,崔 鞏1,2,謝德擎1,2
    2018年第8期
    摘要
    引用本文
    摘??要:基于體積法設計透水混凝土配合比,系統研究了骨料種類、水灰比、水泥用量和砂率對透水混凝土基本性能的影響規律。試驗結果表明:骨料粒徑越大,透水混凝土強度越小、透水系數越大;骨料強度越高,透水混凝土強度也越高。減小水灰比在提高漿體強度的同時還可能導致漿體流動性不佳,造成透水混凝土強度降低。增加水泥用量或使用細砂取代部分碎石,雖能使強度提升但同時也犧牲了部分透水性能。Abstract:Themixproportionofperviousconcretewasdesignedbasedonvolumemethod,theeffectofdifferentfactorsonthecompressivestrengthandpermeabilityofperviousconcretewasstudiedsuchasaggregatetypes,W/C,contentofcementandsandratio.Theresultsshowthatthelargersizeofaggregate,thelowercompressivestrengthandhigherhydrologicalpermeabilityofperviousconcrete.Highercompressivestrengthcanalsobeobtainedbyusingharderaggregate.ReductionofW/Cofperviousconcreteincreasesstrengthofpastebutprobablyjeopardizesflowability,causingdecreaseofcompressivestrengthofperviousconcrete.Withmorecontentofcementorpartialreplacementofaggregatewithsand,thecompressivestrengthofperviousconcreteisimprovedbasedonlossofhydrologicalproperty.Becausetheapparentdensityofperviousconcreteisactuallyincreased.
    姜騫,周華新,崔鞏,等.骨料和配合比參數對透水混凝土基本性能影響[J].混凝土與水泥制品,2018(8):1-5. JIANG Q,ZHOU H X,CUI G,et al.Influence of Aggregate and Mix Proportion Parameters on Basic Properties of Pervious Concrete[J].China Concrete and Cement Products,2018(8):1-5.
    磷酸鎂水泥鋼渣透水混凝土試驗研究
    磷酸鎂水泥鋼渣透水混凝土試驗研究
    • 徐 立
    2018年第8期
    摘要
    引用本文
    摘??要:采用不同粒徑的鋼渣作為骨料,具有快硬早強的磷酸鎂水泥作為膠凝材料制備高強透水混凝土。研究了鋼渣骨料粒徑大小和成型方式對透水混凝土不同齡期的抗壓強度、抗折強度、孔隙率和透水系數的影響。試驗研究表明:磷酸鎂水泥具有較高的黏結強度,配制的透水混凝土具有較高的早期力學性能和優異的抗折強度。在相同成型條件下,中粒徑透水混凝土抗壓強度最高且透水系數良好;對比三種成型方式,振動成型透水混凝土力學性能最優。Abstract:Steelslagofdifferentparticlesizesandmagnesiumphosphatecementwereusedtopreparehigh-strengthpermeableconcrete,andtheeffectofthesizeofsteelslagaggregateandformingmethodoncompressivestrength,flexuralstrength,porosityandpermeabilitycoefficientofpermeableconcreteatdifferentageswerestudied.Theresultsshowthatthemagnesiumphosphatecementhashighbondstrength,andthepreparedpermeableconcretehashighearlymechanicalpropertiesandexcellentflexuralstrength.Underthesameformingconditions,the?permeableconcretewithmedium-diameterslaghasthehighestcompressivestrengthandgoodperformanceofpermeability.Comparedwiththethreeformingmethods,themechanicalpropertiesofvibratingpermeableconcreteareoptimal.
    徐立.磷酸鎂水泥鋼渣透水混凝土試驗研究[J].混凝土與水泥制品,2018(8):6-9. XU L.Experimental Research on Pervious Concrete with Magnesium Phosphate Cement and Steel Slag[J].China Concrete and Cement Products,2018(8):6-9.
    工業級碳納米管增強水泥基材料力學性能試驗研究
    工業級碳納米管增強水泥基材料力學性能試驗研究
    • 歐陽輝玄,王燕鋒,趙曉華
    2018年第8期
    摘要
    引用本文
    摘?要:通過表面活性劑聚乙烯吡咯烷酮和超聲作用,將工業級碳納米管分散在水溶液中,制備了碳納米管水泥凈漿和碳納米管水泥砂漿,標準養護28d后測試其力學性能。試驗結果顯示,工業級碳納米管在摻量為水泥質量分數的0.05%、0.1%、0.5%時,水泥凈漿抗折強度分別提高:2.503%、-21.808%、-12.302%;抗壓強度分別提高:11.966%、13.039%、10.866%。同樣摻量的碳納米管,水泥砂漿的抗折強度提高幅值分別為:17.16%、7.07%、3.72%;水泥砂漿的抗壓強度提高幅值為:8.07%、2.61%、-5.24%。SEM結果表明,適量分散良好的工業級碳納米管在水泥基體內呈橋接狀分布,隨著摻量的增加,團聚作用明顯,碳納米管呈現出簇擁現象。壓汞試驗結果顯示,在水泥基材料內適量添加工業級碳納米管,水泥基材料的孔隙率降低,有害孔的數量減小,水泥基材料內部孔隙結構得到改善。Abstract:Polyvinylpyrrolidonewasusedasdispersanttodispersetheindustriallevelcarbonnonatubes(IL-CNTs)inaqueoussolutionundertheactionofultrasound.Andthenthehomo-dispersedcement/CNTscompositesareprepared.Themechanicalpropertiesofthesecompositeswereinvestigatedatageof28day.Theresultsshowthatthe28dflexuralandcompressivestrengthsincreasedby2.503%and11.966%withtheIL-CNTscontentis0.05%byweightofcement.However,astheproportionofIL-CNTsisincreasedfrom0.1%to0.5%byweightofcement,theflexuralstrengthofthepastedecreasesby21.808%,12.302%,thecompressivestrengthofthepasteincreasesby13.039%,10.866%.ForthecaseofthemortarinthesameratioofIL-CNTs,theflexuralandcompressivestrengthincreaseby17.16%,7.07%,3.72%and8.07%,2.61%,-5.24%,respectively.SEManalysisshowsthatproperadditionofIL-CNTsmakesthebridgingbetweentheCNTsandthematrix.Theywillagglomeratewhentheamountofadmixtureisincreased.TheresultsofMIPshowthatwiththeproperadditionofindustrialcarbonnanotubesinthecement-basedmaterials,theporosityofthecement-basedmaterialsisreduced,thenumberofharmfulporesisreduced,andtheinternalporestructureofthecement-basedmaterialsisimproved.
    歐陽輝玄,王燕鋒,趙曉華.工業級碳納米管增強水泥基材料力學性能試驗研究[J].混凝土與水泥制品,2018(8):10-14. OUYANG H X,WANG Y F,ZHAO X H.Experimental Study on Mechanical Performance of Industrial Level Carbon Nonatubes Reinforced Cement-based Materials[J].China Concrete and Cement Products,2018(8):10-14.
    海洋浪濺環境下建筑鋼筋用聚合物防腐砂漿耐久性試驗研究
    海洋浪濺環境下建筑鋼筋用聚合物防腐砂漿耐久性試驗研究
    • 何巖東,朱希成,韓炳晨,汪峻峰
    2018年第8期
    摘要
    引用本文
    摘??要:對新型建筑鋼筋用聚合物防腐砂漿模擬海洋浪濺區環境腐蝕進行試驗研究。采用自主研發的海洋環境模擬噴淋裝置研究了防腐砂漿的力學性能、抗氯離子滲透性能以及與鋼筋的黏接強度等指標,以探究其在惡劣海洋環境下的實用性和可靠性。研究結果表明,防腐砂漿強度增長迅速,28d齡期的抗壓強度為92.0MPa;同時其微觀結構致密,具有很好的抗滲、抗氯離子滲透性能,且與鋼筋之間的黏結能力較強。Abstract:?Theexperimenatlresearchofpolymeranticorrosivemortarusedinanewtypeofbuildingsteelbariscarriedouttosimulatetheenvironmentalcorrosionofoceanwavesplashingarea.Theselfdevelopedmarineenvironmentsimulationspraydeviceisusedtostudythemechanicalproperties,resistancetochlorideionpermeabilityandbondingstrengthbetweenthemortarandthesteelbar,soastoexploreitspracticabilityandreliabilityunderharshmarineenvironment.Theresearchresultsshowthatthestrengthoftheanticorrosivemortarincreasesrapidly,thecompressivestrengthof28dis92.0MPa,anditsmicrostructureiscompact.Thenewanticorrosivemortarhasgoodpermeabilityandchloridepenetrationresistance,andhasstrongbondingabilitywithsteelbar.
    何巖東,朱希成,韓炳晨,等.海洋浪濺環境下建筑鋼筋用聚合物防腐砂漿耐久性試驗研究[J].混凝土與水泥制品,2018(8):15-20. HE Ya D,ZHU X C,HAN B C,et al.Experimental Research on Durability of Polymer Anticorrosive Mortar Used for Building Reinforcement under Ocean Wave Splashing Environment[J].China Concrete and Cement Products,2018(8):15-20.
    “鏡面”水泥基材料試驗研究
    “鏡面”水泥基材料試驗研究
    • 張建業,陳 旭,郭巖巖
    2018年第8期
    摘要
    引用本文
    摘??要:試驗研究了不同模板下水泥基材料表面光澤度的變化情況,確定了硬質PVC板是制備水泥基鏡面材料的重要條件,同時研究了膠砂比、水膠比、水泥品種、擴展度等因素對水泥基鏡面材料表面光澤度的影響。試驗結果表明,采用高膠砂比、低水膠比、普通硅酸鹽水泥及高擴展度時可制備光澤度值較高的水泥基鏡面材料。Abstract:Thechangesofsurfaceglossinessofcementbasematerialsusingdifferenttemplatewerestudied.Andit’sdeterminedthatPolyVinylChloride(PVC)plateisanimportantconditionforthepreparationofcementbasemirrormaterials.Theeffectofbinder-sandratio,water-binderratio,typeofcementandslump-flowonthe?surfaceglossinessofcementbasematerialswerestudied.Theresultsshowthatcementbasedmirrormaterialswithhighglossvaluecanbepreparedbyusinghighbinder-sandratio,lowwater-binderratio,commonportlandcementandhighslump-flow.
    張建業,陳旭,郭巖巖.鏡面”水泥基材料試驗研究[J].混凝土與水泥制品,2018(8):21-23. ZHANG J Y,CHEN X,GUO Y Y.Experimental Study on Mirror Surfac Cement-based Materials[J].China Concrete and Cement Products,2018(8):21-23.
    基于DE響應面分析的C100超高性能混凝土配合比優化設計
    基于DE響應面分析的C100超高性能混凝土配合比優化設計
    • 趙士豪1,林喜華1,車玉君2,張廣智1,何 欣1
    2018年第8期
    摘要
    引用本文
    摘 要:基于DE響應面分析法,對C100等級混凝土基本配合比進行模型擬合,研究膠凝材料用量、砂率、減水劑用量各自變量及其交互作用對C100混凝土擴展度、倒桶時間、28 d抗壓強度的影響規律,經響應面預測、驗證獲得最佳配合比參數。結果表明:對于擴展度和倒桶時間影響方面,膠材用量>減水劑用量>砂率,雙因素交互作用不顯著;對于28 d抗壓強度影響方面,膠材用量>減水劑用量>砂率,膠材用量與砂率對28 d抗壓強度的交互作用最顯著;最佳配合比理論預測結果與驗證結果接近,響應面分析法可有效地用于C100超高性能混凝土配合比優化。 Abstract: Based on DE response surface analysis method, the basic mix ratio of C100 grade concrete was modeled to study the effects of the amount of cementitious material, the sand ratio, the amount of water reducing agent and their interaction on the slump flow, collapse time, compressive strength of C100 concrete, the response surface predicted and verified the best matching ratio parameters. The results show that, for the effect of slump flow and collapse time, the amount of cementitious material>the amount of water reducing agent>the sand ratio, the interaction between the double factors is not significant; for the effect of 28 d compressive strength, the amount of cementitious material>the amount of water reducing agent>the sand ratio, the interaction between the amount of cementitious material and the sand ratio on the compressive strength of 28 d is the most significant, the best mix ratio is close to the theoretical result, the surface analysis method can be effectively used for C100 UHPC mix optimization.
    混凝土軸心受拉全曲線試驗的新方法
    混凝土軸心受拉全曲線試驗的新方法
    • 王利平1,楊衛忠2
    2018年第8期
    摘要
    引用本文
    摘 要:混凝土軸拉應力-應變全曲線反映了混凝土強度、變形等諸多特性,在總結和分析了不同拉伸應力-應變全曲線試驗方法的基礎上,基于細觀損傷模型的損傷本構關系模型,提出了在混凝土軸心受壓試驗的同時通過測定混凝土橫向拉伸變形,利用優化算法識別得到混凝土拉伸損傷參數和材料常數,進而得到混凝土單軸抗拉強度和應力-應變全曲線,并用已有試驗結果加以驗證。結果表明,理論預測結果與試驗結果吻合良好。 Abstract: The tensile stress-strain curve of concrete reflects many performances such as strength and deformation. The existed test methods obtaining softening response of concrete in tension were summarized and discussed. Based on the damage constitutive relation established by the author, a new test method of strength and deformation of concrete under axial tension was suggested. Through the specimen subjected axial compressive loading, transverse tensile strain was measured and random field parameters were identified by optimization algorithm. The full tensile stress-strain curve of concrete was also determined. Compared with test results, it is found that the analytical results have a good agreement with experiments
    新型混凝土電桿撓度測量系統研究
    新型混凝土電桿撓度測量系統研究
    • 陸琛杰1,金坤鵬1,錢錫穎1,孔憲國2
    2018年第8期
    摘要
    引用本文
    摘 要:對伺服加載和無線傳輸技術應用于混凝土電桿撓度測量進行了研究分析。結果表明,新型混凝土電桿撓度測量系統相比于傳統檢測法,極大地簡化了測試過程,規避了作業風險,提高了檢測效率,具有結構合理、接線簡單、操作安全方便等優點。該方法能滿足預期測試要求,可為工程應用提供指導。 Abstract: The application of servo load and wireless transmission technology to concrete pole deflection is studied, and the results are analyzed. The results show that compared with the traditional detection method, new deflection measuring system can greatly simplify the testing process, reduce the operational risk and improve the detection efficiency.The equipment has the advantages of reasonable structure and portable, safe and convenient operation. The new measurement method meets the expected test requirements, it is provided that the scientific basis for the popularization application of this method.
    大口徑PCCP管道無靠背水壓試驗方法研究
    大口徑PCCP管道無靠背水壓試驗方法研究
    • 徐 松
    2018年第8期
    摘要
    引用本文
    摘 要:采用設置打壓管的水壓試驗方案對大口徑PCCP管道無靠背水壓試驗方法進行了研究。結果表明,該方法具有施工簡單、可靠性高、節約成本、地質條件適應性強等優點,且無靠背水壓試驗分段靈活,基本不影響整體施工進度,可有效提高分段水壓試驗的經濟性和安全性。 Abstract: The test technology of no backrest hydraulic pressure for large diameter PCCP pipeline is studied by setting the water pressure tube at both ends of the hudraulic test section. The results show that the method has the advantages of simple construction, high reliability, high cost saving, strong adaptability of geological conditions and so on, and it is flexible with no backrest water pressure test section, and does not affect the whole schedule. The construction progress can effectively improve the economy and safety of the segmental water pressure test.
    利用橡膠加熱帶檢測鋼管混凝土密實度的試驗研究
    利用橡膠加熱帶檢測鋼管混凝土密實度的試驗研究
    • 王文元1,王桂玲1,危 鼎1,楊鴻玉2
    2018年第8期
    摘要
    引用本文
    摘 要:基于紅外熱成像技術,利用橡膠加熱帶對設有缺陷的鋼管混凝土柱進行加熱,在缺陷區域鋼管壁形成溫度差,探索利用橡膠加熱帶檢測鋼管混凝土密實性。利用ANSYS有限元分析軟件,對加熱時間、加熱溫度、缺陷尺寸大小進行模擬分析,結果表明,利用加熱帶加熱的方法可以清晰的辨別出100 mm×100 mm×10 mm(5 mm)的大缺陷,以及50 mm×50 mm×10 mm(5 mm)的小缺陷。 Abstract: Based on the thermal imaging technology, the rubber heater band is used to heat the steel pipe concrete column with defects, and then the temperature difference is formed at defect oreas. The detecting on compactness of concrete filled steel tube is studied. The ANSYS is used to simulate the heating time, heating temperature, defect size. The results show that the use of heating belt can clearly distinguish 100 mm×100 mm×10 mm(5 mm) of the defect, and 50 mm×50 mm×10 mm(5 mm) of small defects.
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