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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

    復合白云石摻合料對混凝土性能的影響
    復合白云石摻合料對混凝土性能的影響
    • 路振剛1,2,李 煒3,劉亞蓮1,2,趙 陽1,2,胡云鶴1,2,張治洲1,2,孟繼慧1,2,石 亮3
    2018年第2期
    摘要
    引用本文
    摘?要:復合了白云石與水渣用作混凝土摻合料,并經過了磨細處理研究了不同粒徑及摻量的復合白云石摻合料對混凝土工作性能、氣泡穩定性、塑性開裂及抗壓強度的影響規律。結果表明,摻入的復合白云石摻合料摻量越大,混凝土含氣量損失率越小,塑性開裂面積越小。摻入的復合白云石摻合料粒徑越大,混凝土坍落度越大,含氣量損失率越大,塑性開裂面積越大。對于C30混凝土,當復合白云石摻合料粒徑10μm摻量20%時,對混凝土抗壓強度的貢獻最大。Abstract:Theeffectofgrounddolomiteadmixturewithdifferentparticlesizeandcontentontheworkingperformance,bubblestability,plasticcrackingandcompressivestrengthofconcretewasstudiedbymixingthedolomiteandwaterresidueasconcreteadmixture.Theresultsshowthatthelargerthedolomitecontentis,thesmallertheconcretegaslossrateisandthesmallertheplasticcrackingareais;thelargertheparticlesizeofthecompositedolomiteadmixtureis,thelargertheconcreteslump,thegaslossrateandtheplasticcrackingareaarean.Whenthecompositedolomiteadmixtureparticlesize10μmcontentis20%,theconcretecompressivestrengthofC30concreteisthehighest.
    路振剛,李煒,劉亞蓮,等.復合白云石摻合料對混凝土性能的影響[J].混凝土與水泥制品,2018(2):101-104. LU Z G,LI W,LIU Y L,et al.Effects of Composite Dolomite Admixture on Properties of Concrete[J].China Concrete and Cement Products,2018(2):101-104.
    再生混凝土單軸受壓應力-應變全曲線分析
    再生混凝土單軸受壓應力-應變全曲線分析
    • 謝永濱,平 樂,李榮彬,楊 虹,吳苗苗,李丹丹,羅冬梅
    2018年第2期
    摘要
    引用本文
    摘?要:再生混凝土應力-應變本構關系是分析再生混凝土結構承載力及變形破壞的主要依據,本文針對六種不同再生粗骨料替代率、三個齡期的棱柱體共54個試件進行軸心抗壓強度試驗,分析了不同再生粗骨料替代率對再生混凝土全應力-應變曲線和軸心抗壓強度、彈性模量、峰值應變及極限應變的影響規律。結果表明,再生混凝土全應力-應變曲線與普通混凝土相似,彈性模量均低于普通混凝土,峰值應變隨著取代率增加而增大,極限應變則隨著取代率的增加呈先增后減趨勢。Abstract:Stress-strainconstitutiverelationofrecycledconcreteisthemainbasisforanalyzingthebearingcapacityanddeformationfailureofrecycledconcretestructure.Theaxialcompressivestrengthtestswerecarriedoutonatotalof54testpiecesofprismobjectswithsixdifferentreplacementratesofrecycledthickaggregateandthreeages.Theinfluencesofdifferentreplacementratesofrecycledthickaggregateonstress-straincurveandaxialcompressivestrength,elasticmodulus,peakstrainandultimatestrainofrecycledconcretewereanalyzed.Theresultsshowthatthestress-straincurveofrecycledconcreteissimilartothatofordinaryconcrete,anditselasticmodulusislowerthanthatofordinaryconcrete.Thepeakstrainincreaseswiththeincreaseofreplacementrate,whiletheultimatestrainincreasesfirstandthendecreaseswiththeincreaseofreplacementrate.
    謝永濱,平樂,李榮彬,等.再生混凝土單軸受壓應力-應變全曲線分析[J].混凝土與水泥制品,2018(2):95-100. XIE Y B,PING L,LI R B,et al.Analysis on Axial Compression Full Stress-strain Curve of Recycle Concrete[J].China Concrete and Cement Products,2018(2):95-100.
    逐時累計溫度法預判隧道二次襯砌脫模時間
    逐時累計溫度法預判隧道二次襯砌脫模時間
    • 張立勃,陳洪光,汪富軍,楊 卓
    2018年第2期
    摘要
    引用本文
    摘?要:逐時累計溫度(℃·h)是對逐日累計溫度(℃·d)的借鑒,即環境溫度t、養護時長h和抗壓強度fcu可能存在函數關系。在養護箱內模擬不同溫度環境,對C30~C40的二次襯砌混凝土配合比立方體試件進行養護、測試其抗壓強度fcu,得到了抗壓強度fcu-逐時累計溫度(℃·h)回歸公式,并計算了C30~C40混凝土的脫模時間推薦值,用于預判鐵路隧道二次襯砌脫模;同時給出了需要對該推薦值進行修正的情況。Abstract:Thehourlyaccumulatedtemperatureof℃·hlessonsfromdailyaccumulativetemperature℃·d,theremaybeafunctionalrelationshipbetweenenvironmentaltemperaturet,maintenancehourhandcompressivestrengthfcu.Differenttemperatureenvironmentincuringboxwassimulated,thecubespecimenofC30~C40secondaryliningconcretemixratiowerecured,thecompressivestrengthfcuandtheregressionformulaofthecompressivestrengthfcuandthedailyaccumulativetemperature℃·dwereobtained,C30~C40concretestrippingtimerecommendedvaluewasculculated,whichcanbeusedtopredictthemoldunloadingofrailwaytunnelsecondaryliningandcorrectionofthevaluewasgiven.
    張立勃,陳洪光,汪富軍,等.逐時累計溫度法預判隧道二次襯砌脫模時間[J].混凝土與水泥制品,2018(2):90-94. ZHANG L B,CHEN H G,WANG F J,et al.Mold Unloading Time Predication of Railway Tunnel Secondary Lining by Hourly Cumulative Temperature Method[J].China Concrete and Cement Products,2018(2):90-94.
    摻加粉煤灰的硬化砂漿中水泥含量測定方法探討
    摻加粉煤灰的硬化砂漿中水泥含量測定方法探討
    • 張亞濤,劉長順,張成銀,江騰壽
    2018年第2期
    摘要
    引用本文
    摘?要:為選出誤差較小且適應性較強的測定摻加粉煤灰的硬化砂漿中水泥含量的方法,成型了不同粉煤灰摻量的砂漿試樣,標準養護到不同齡期后,分別利用CaO法、葡萄糖酸鈉溶液溶解法和可溶性SiO2法測定其中的水泥含量。試驗結果表明,可溶性SiO2法的誤差最小且適應性最強。采用該方法后,對于粉煤灰摻量不大于20%、齡期不超過180d的砂漿,以及粉煤灰摻量不大于15%、齡期不超過360d的砂漿,水泥含量測定結果的相對誤差絕對值都在5%以內。Abstract:Inordertogettheanalysismethodthathastheleasterrorandthestrongestadaptabilityofcementcontentinhardenedmortarswithflyash,differentsampleswithvariedcontentofflyashwereprepared.Afterthemortarsampleswerecuredfordifferentagesinastandardenvironment,thecementcontentofdifferentsampleswasinvestigatedbyCaOmethod,Sodiumgluconatesolutionmethod,andsolubleSiO2method.TheidealmeasurementsissolubleSiO2method.Byusingthemethod,therelativedeviationabsolutevalueofcementcontentofhardenedmortarswithnomorethan180dagesand20percentflyashcontentissetwithin5%,andthehardenedmortarswithnomorethan360dagesand15percentflyashcontenthavethesameresult.
    張亞濤,劉長順,張成銀,等.摻加粉煤灰的硬化砂漿中水泥含量測定方法探討[J].混凝土與水泥制品,2018(2):86-89. ZHANG Y T,LIU C S,ZHANG C Y,et al.Discussion for Testing Method of Cement Content of Hardened Mortar with Fly Ash[J].China Concrete and Cement Products,2018(2):86-89.
    混凝土冷縮-干縮應力試驗機
    混凝土冷縮-干縮應力試驗機
    • 李長成1,賈福杰1,高玉梅2,趙順增1,劉 立1
    2018年第2期
    摘要
    引用本文
    摘?要:介紹了一種混凝土冷縮-干縮應力試驗機,與價格昂貴的混凝土溫度應力試驗機相比,構造簡單,操作方便。該試驗機可以模擬實際工程中混凝土經歷的真實溫升、降溫和干燥過程,全程準確測量混凝土的冷縮應力、干縮應力和干縮變形,直接給出干縮應力-應變曲線。Abstract:Cooling-dryingshrinkagearethemainformofconcretecrackinginpractice.Anewtypeconcretecooling-dryingstresstestingmachine(CDSTM)isintroduced.Comparedwithexpensiveconcretetemperaturestresstestingmachine,CDSTMismoresimpleinconstructionandeasytooperate.CDSTMcansimulatetherealtemperaturehistoryanddryingshrinkageprocessofconcreteinactualengineering,includingtemperaturerisingandtemperaturecooling.Thus,thewholeprocessofcoolingstress,shrinkagestress,andshrinkagedeformationofconcretewillbeaccuratelydetermined.Andthestress-straincurvecanbeimmediatelyobtained.CDSTMprovidesaconvenientmeasuringmeansforpreventingconcretecrackinginengineering.
    李長成,賈福杰,高玉梅,等.混凝土冷縮-干縮應力試驗機[J].混凝土與水泥制品,2018(2):82-85. LI C C,JIA F J,GAO Y M,et al.A New Type Concrete Cooling-drying Stress Testing Machine[J].China Concrete and Cement Products,2018(2):82-85.
    砂基透水磚的黏模問題研究
    砂基透水磚的黏模問題研究
    • 許靜賢1,2
    2018年第2期
    摘要
    引用本文
    摘 要:砂基透水磚是以細砂為面層骨料,以有機膠結劑為主要黏結材料,經免燒結成型工藝制備而成,具有透水功能的透水磚。但是由于其面層細砂尺寸較小,砂基透水磚在壓制過程中通常會導致黏模問題,嚴重影響生產效率。本文以耐磨性為路用指標,采用壓頭殘余黏結細砂法對砂基透水磚的黏模特性展開試驗研究。通過分析制磚機壓頭殘余黏結細砂量與膠結劑用量、細砂形狀、細砂粒徑、顏料添加量及成型壓力的變化規律對砂基透水磚的性能進行研究。試驗結果表明,當采用圓粒硅砂,膠水用量在4.0%~4.5%、細砂粒徑為40~80目、顏料添加量為1.5%~2.5%,成型壓力為21MPa時制備的砂基透水磚表面比較平整且具有較好的路用性能。 Abstract: Sand-based water permeable brick (SPB) is a kind of permeable brick which is made by sintering molding process with fine sand as the surface layer and organic adhesive as the main bonding material. However, due to its small fine sand size of surface layer, there is a sticking problem in the pressing process, which will seriously affect the production efficiency. The viscosity model experimental of SPB was studied by the method of residual cohesive fine sand on the head, while the wear resistance was as the indicator for the road. The properties of SPB were studied by analyzing the relationship of esidual cohesive fine sand on the head with dosage of the glue, sand shape, particle size, the content of toner, forming pressure. The results show that the SPB is smooth and has a good performance when the round grain of silica sand is used, the amount of resin sand ratio ranges from 4.0% to 4.5%, the fine sand grain size ranges from 40 mesh to 80 mesh, the toner content ranges from 1.5% to 2.5%, and the molding pressure ranges from 17MPa to 21MPa.
    許靜賢.砂基透水磚的黏模問題研究[J].混凝土與水泥制品,2018(2):77-81. XU J X.Research on sticking Problems of Sand-based Permeable Brick[J].China Concrete and Cement Products,2018(2):77-81.
    基于加大截面法加固鋼筋混凝土柱的力學性能分析
    基于加大截面法加固鋼筋混凝土柱的力學性能分析
    • 李祖輝,柴明明,丁雙雙
    2018年第2期
    摘要
    引用本文
    摘?要:用水泥基灌漿料加大鋼筋混凝土柱截面,提高承載能力,是混凝土結構常用加固方法。為了研究鋼筋混凝土柱用水泥基灌漿料加固后新舊混凝土協同作用的性能,以待加固柱表面不做處理、待加固柱表面鑿毛處理和待加固柱表面粘貼鋼絲網三種結合面處理方式分別制作3根試件,對試件進行試驗研究,觀察試件的破壞特征,研究了柱內鋼筋和水泥基灌漿料的應變以及壓力-壓縮量的關系,得出一種受力性能良好、經濟可靠,可用于實際工程加固的結合面處理方式。Abstract:It’sthecommonmethodofreinforcingtheconcretestructurethatusesthecement-basedgroutingmaterialtoenlargethesectionofsteelbarconcretecolumnsandimprovesitscarryingability.Inordertostudythesynergisticfunctionofnewandoldconcreteafterreinforcedbycementbasedgroutingmaterial,threeveilmanagementmeaningswasusedtomakethreetestspecimens.Thenmakethetesttostudythesetest-specimenandtheirdestructivefeature.Themainrelationshipbetweenthesteelbarofcolumnandcement-basedgroutingmaterial,pressureandcompressionwereobtained.Thenaveilmanagementmethodwhichhasagoodmechanicalbehaviorwasgot,whichwaseconomicandreliable,andcanbeusedintothepracticalprojectreinforcement.
    李祖輝,柴明明,丁雙雙.基于加大截面法加固鋼筋混凝土柱的力學性能分析[J].混凝土與水泥制品,2018(2):72-76. LI Z H,CHAI M M,DING S S.Analysis on Mechanical Performance of Reinforcing Concrete Columns Based on Enlarge Section Method[J].China Concrete and Cement Products,2018(2):72-76.
    堿礦渣泡沫混凝土配合比和孔結構研究
    堿礦渣泡沫混凝土配合比和孔結構研究
    • 楊保先1,萬小梅1,2,趙鐵軍1,2,曾現琛3,劉國強1,程楊杰1
    2018年第2期
    摘要
    引用本文
    摘?要:以礦渣摻量系數、溶膠比、堿當量為參數,進行三因素三水平的正交試驗,得到以水玻璃為激發劑的堿礦渣泡沫混凝土的最優配合比。試驗結果表明,三個因素中,堿當量對堿礦渣泡沫混凝土28d的抗壓強度、干密度、導熱系數的影響均為最高,其次是溶膠比,礦渣摻量系數影響最小。用Image-ProPlus圖像處理與分析軟件對堿礦渣泡沫混凝土的孔結構進行分析,得到表征孔隙率、平均圓度系數、平均孔徑、孔徑分布等孔結構參數,分析可知堿礦渣泡沫混凝土的各項性能與其孔結構之間有著密切的聯系,孔隙率和平均孔徑越小,抗壓強度越高、導熱系數越大;堿礦渣泡沫混凝土的干密度與孔隙率有很好的相關性,相關系數R為0.9888。Abstract:Basedontheorthogonalexperiment,theoptimummixproportionofalkaliactivatedslagfoamconcretewithwaterglassasactivatorisobtainedbytakingthreefactorsinvolvesslagcontent,solution-binderratioandequivalentconcentrationofalkalisolution.Theresultsshowthatamongthreefactors,equivalentconcentrationofalkalisolutionhasthehighestimpactonthecompressivestrength,drydensityandthermalconductivityattheageof28d,followedbysolution-binderratio,andinfluenceofslagcontentisthelastone.Theporestructureofalkali-slagfoamconcreteisanalyzedbyImage-ProPlustoobtaintheporestructureparameterssuchasporosity,averagecircularitycoefficient,averageporesizeandporesizedistribution.Itisfoundthatalltheperformanceofalkaliactivatedslagfoamconcreteanditsporestructurearecloselylinked,thesmallertheporosityandaverageporesize,thehigherthecompressivestrength,andthegreaterthethermalconductivity;drydensityofalkaliactivatedslagfoamconcretehasagoodcorrelationwiththeporosity,thecorrelationcoefficientRis0.9888.
    楊保先,萬小梅,趙鐵軍,等.堿礦渣泡沫混凝土配合比和孔結構研究[J].混凝土與水泥制品,2018(2):65-71. YANG B X,WAN X M,ZHAO T J,et al.Study on Mix Proportion and Pore Structure of Alkali Activated Slag Foam Concrete[J].China Concrete and Cement Products,2018(2):65-71.
    纖維增強水泥棧道板的發展前景
    纖維增強水泥棧道板的發展前景
    • 馮立平1,徐定豐2,黃建東1,方冬林1
    2018年第2期
    摘要
    引用本文
    摘 要:通過纖維水泥棧道板產品性能的介紹和工程應用實例的分析,比較了纖維水泥棧道板、防腐木棧道板及木塑制品產品的應用情況,并分析了纖維水泥棧道板在戶外工程應用的前景,探討了纖維水泥制品行業發展的新途徑。 Abstract: By introducing the performance of fiber cement board products plank and examples of engineering application, the application of fiber cement board, plank board and wood products, wood preservative products were compared, and the prospect of fiber cement board plank in outdoor engineering application were analyzed. In addition the new ways for the development of fiber cement products industry was discussed.
    馮立平,徐定豐,黃建東,等.纖維增強水泥棧道板的發展前景[J].混凝土與水泥制品,2018(2):61-64. FENG L P,XU D F,HUANG J D,et al.Development Prospect of Fiber Reinforced Cement Plank[J].China Concrete and Cement Products,2018(2):61-64.
    聚丙烯纖維混凝土單軸受壓損傷機理研究
    聚丙烯纖維混凝土單軸受壓損傷機理研究
    • 黃俊男1,顏燕祥2
    2018年第2期
    摘要
    引用本文
    摘?要:考慮聚丙烯纖維體積摻量和長徑比兩因素,設計制作了7組混凝土試件,通過單軸受壓應力-應變全曲線試驗,研究了聚丙烯纖維對混凝土力學行為的影響。采用聲發射信號采集系統同步監測混凝土內部損傷演化過程,分析了聚丙烯纖維混凝土單軸受壓損傷機理。結果表明,聚丙烯纖維顯著改善了混凝土的峰后延性和抗壓韌性?;炷猎嚰炌芽p形成時,聲發射撞擊數突增,應力迅速下降,損傷發展較快。隨著纖維體積摻量增加,試件聲發射累計撞擊數逐漸增大;纖維長徑比為280時,聲發射累計撞擊數最大。聚丙烯纖維混凝土破壞時剪切裂紋所占裂紋總數比重較大,試件呈現剪切破壞形態。Abstract:Atotalof7groupofconcretespecimensfordifferentfibervolumefractionsandaspectratioswasfabricatedandtested.Basedonthestress-straincurveunderuniaxialloading,theeffectsofPF(polypropylenefiber)onthestress-strainbehaviorofconcretewerestudied.Thedamageevolutionprocesswasmonitoredbyacousticemission(AE)signalacquisitionsystem,andthecompressivedamagemechanismwasanalyzedbasedonAEparameters.Theresultsindicatethatthepost-peakductilityandcompressivetoughnessareimprovedbyadditionofPF.ResultsfromAEshowethattheAEhitshareaconcentratedreleasewhenthemaincracksofspecimenareformedwithasharpdropinaxialstress.Moreover,thecumulativeAEhitsincreasewiththeincreasingfibervolumefraction,andcanreachethebiggestforthefiberaspectratioof280.Furthermore,themassratioofshearcrackstothetotalincreasesbytheincorporationofpolypropylenefibersandthespecimenshoweanobviousshearingfailuremode.
    黃俊男,顏燕祥.聚丙烯纖維混凝土單軸受壓損傷機理研究[J].混凝土與水泥制品,2018(2):55-60. RHUANG J N,YAN Y X.Research on Uniaxial Compression Damage Mechanism of Polypropylene Fiber Reinforced Concrete[J].China Concrete and Cement Products,2018(2):55-60.
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