第三期_2018_《混凝土與水泥制品》雜志社

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第三期

混凝土拌合物流變特性對超高泵送性能的影響

余成行，洪敬福，劉敬宇

２０18年第3期

摘要

引用本文

摘?要：分析了混凝土拌合物流變特性的影響因素，探討了混凝土泵送流動行為及剪切變稀和泵送損失的機理，并試圖利用混凝土的流變特性對其施工性能尤其是超高泵送性能進行分析評價。施工現場數據表明，采用塑性黏度和屈服應力對泵送沿程壓力損失進行評估是可行的，能夠指導類似工程施工。Abstract:Thefactorsofaffectingtherheologicalbehaviorofconcreteisanalyzed,themechanismofconcretepumpingflowbehaviorandshearthinningandperformancedeteriorationduetopumpingarediscusse,andtheconstructionperformanceofconcreteespeciallysuperhighpumpingperformanceisanalyzedbasedontherheologicalbehavior.Bycomparingandanalyzingtheactualengineeringtestdata,itisfeasibletoevaluatethepumpingpressurelossbyusingplasticviscosityandyieldstress.

余成行,洪敬福,劉敬宇.混凝土拌合物流變特性對超高泵送性能的影響[J].混凝土與水泥制品,2018(3):1-6. YU C H,HONG J F,LIU J Y.Influence of Rheological Behavior on the Performance of Super High Pumping Concrete[J].China Concrete and Cement Products,2018(3):1-6.

白云巖石粉比表面積對水泥砂漿性能的影響研究

鄢佳佳1.2，鄧翀1.2，葉仙松1.2

２０18年第3期

摘要

引用本文

摘??要：研究了白云巖機制砂石粉比表面積（150m2/kg、350m2/kg、550m2/kg）對水泥-機制砂砂漿工作性、力學性能、耐久性和體積穩定性的影響，并與粉煤灰作對比。結果表明：比表面積對石粉活性影響較顯著，而對其需水性的影響相對較小。隨著石粉比表面積的提高，砂漿流動度、抗壓強度、干縮輕微增大，抗氯離子滲透性小幅降低，石粉比表面積達到350m2/kg時才會改善砂漿性能，但比表面積550m2/kg石粉對砂漿性能的改善作用仍然不及Ⅱ級粉煤灰。Abstract：Theresearchontheeffectsofstonedustwithdifferentspecificsurfaceareaontheworkability,mechanicalproperties,durabilityandvolumestabilityofcement-manufacturedsandmortaranditscomparisonwithflyasharecarriedout.Theexperimentalresultsindicatethatthespecificsurfaceareaofstonepowderissignificantlyrelevanttoitsactivitybuthaslittleinfluenceonthewaterdemand.Withtheincreaseofthespecificsurfaceareaofstonepowder,thefluidity,compressivestrengthanddryshrinkageofthemortarslightlyincreasewhileitsresistancetothechloride-ionpenetrationdecreasetoasmallextent.Whenthespecificsurfaceareaofstonepowderwasabove350m2/kg,thepropertiesofmortarcanbeimproved,butevenwhen550m2/kg,itsimprovingeffectsonmortararestillinferiortothatofflyash.

鄢佳佳,鄧翀,葉仙松.白云巖石粉比表面積對水泥砂漿性能的影響研究[J].混凝土與水泥制品,2018(3):7-10. YAN J J,DENG C,YE X S.Study on Effects of Specific Surface Area of Stone Dust on the Properties of Cement Mortar[J].China Concrete and Cement Products,2018(3):7-10.

鋅化合物改變水泥混凝土水化歷程的研究進展

岳漢威，單文華，趙寶鋮，湯軍安

２０18年第3期

摘要

引用本文

摘要：隨著工業化的發展，大量含鋅廢物對環境造成了嚴重污染，采用水泥對含鋅廢物進行固化是常用的處理辦法。而確定鋅化合物對水泥水化歷程作用的機理是固化利用和建筑功能化應用的前提。本文綜述了國內外鋅化合物改變水泥水化歷程的研究進展，指出了目前研究中存在的不足，并結合研究現狀對下階段研究方向進行了展望。 Abstract: With the development of industrialization, a large number of zinc-containing waste has caused serious pollution to environment. These wastes are usually treated by means of solidification/stabilisation techniques, using cement. The mechanism of the hydration of cement in the presence of zinc-compounds is the prerequisite for the application of cement solidification/stabilisation and building functional application. The research progress of zinc-compounds influencing the hydration process of cement is reviewed. The current problems and the research area in the future are also pointed out.

岳漢威,單文華,趙寶鋮,等.鋅化合物改變水泥混凝土水化歷程的研究進展[J].混凝土與水泥制品,2018(3):11-15. YUE H W,SHAN W H,ZHAO B C,et al.Research Progress of the Hydrate Process of Cement Concrete in the Presence of Zinc-compounds[J].China Concrete and Cement Products,2018(3):11-15.

袖閥管注漿漿液配比試驗研究與應用

王生1，郭佳奇1，高保彬2，侯俊華3，孟長江4

２０18年第3期

摘要

引用本文

摘??要：采用注漿工程中最常用的普通硅酸鹽水泥和超細水泥進行試配，研究了不同配合比對漿液的強度、凝膠時間、稠度、析水率的影響，得出注漿漿液最佳配合比。結合漢宜高鐵現場施工經驗，對注漿加固后的客運路段做了沉降檢測，結果表明，注漿施工工后沉降得到了有效控制，達到了預期效果，可為今后類似注漿工程做借鑒。Abstract:Thesettlementtreatmentofthesleevevalvetubegroutingreinforcementisusedforthebridge-subgradetransitionsectionoftheHanyihigh-speedrailway.Byanalyzingthemixproportionofcommonportlandcementandsuperfinecementingroutingengineering,theinfluenceofslurrystrength,geltime,consistencyanddrainagerateisanalyzed,andthemostsuitablegroutingslurryisfound.Combinedwiththeon-siteconstructionexperienceofHanyihigh-speedrailway,settlementdetectionofreinforcedpassengertransportsectionswithgroutingreinforcementisconducted.Theresultsshowthatpost-constructionsettlementiseffectivelycontrolled,andtheexpectedremediationeffectisachieved,whichcanprovideareferenceforthesimilargroutingworks.

王生,郭佳奇,高保彬,等.袖閥管注漿漿液配比試驗研究與應用[J].混凝土與水泥制品,2018(3):16-20. WANG S,GUO J Q,GAO B B,et al.Experimental Study and Application of Mix Proportion of Sleeve Valve Tube Grouting Slurry[J].China Concrete and Cement Products,2018(3):16-20.

高強混凝土軸壓本構關系研究

楊衛忠，白曉瑋，李陽

２０18年第3期

摘要

引用本文

摘??要:基于混凝土的細觀損傷機制和損傷本構關系模型，推導了高強混凝土軸壓彈塑性本構關系，結合已有研究成果，通過對初始彈性模量、峰值應變等模型關鍵參數進行綜合分析，建立了基于混凝土軸心抗壓強度參數的計算方法，所得應力-應變關系（含殘余變形）既可用于單調加載，也適用卸載后再加載，可與已有的普通混凝土軸心抗壓本構關系相協調，與試驗結果相比較，預測結果與實際值吻合良好。Abstract:Basedonamesoscopicfailuremechanism,adamageconstitutivemodelisintroduced.Anelasto-plasticstress-strainrelationshipofhigh-strengthconcreteisdeduced.Thekeycoefficientssuchasinitialelasticmodulusandpeakstrainusedintherelationshiparereanalyzedbyexistedresultsandcalculatedbyprismstrength.Asimplecalculationmethodofplasticstrainissuggested.Thestress-strainequationcanbeusedtonormalstrengthconcreteandextrahighstrengthconcrete.Theequationcanalsobeusedinloadingandunloading.Itcanalsoreflectplasticstrain.Comparedwithexistedtestresults,theequationhasagoodagreementwithactualstress-strainresponse.

楊衛忠,白曉瑋,李陽.高強混凝土軸壓本構關系研究[J].混凝土與水泥制品,2018(3):21-24. YANG W Z,BAI X W,LI Y.Research on Stress-strain Relationship of High-strength Concrete[J].China Concrete and Cement Products,2018(3):21-24.

硅烷偶聯劑改性偏高嶺土對混凝土抗滲性的影響

田焜，孔贇，王月蘭，周陽，資曉明

２０18年第3期

摘要

引用本文

摘要：將硅烷偶聯劑改性后的偏高嶺土應用于水泥基材料中，研究了改性偏高嶺土對混凝土工作性能、力學性能和滲透性的影響。并運用壓汞和SEM等方法對其影響機理進行了探討。結果表明，硅烷偶聯劑改性偏高嶺土能夠有效改善混凝土的工作性能，提高混凝土的強度，還可以優化混凝土的孔結構和界面過渡區結構。 Abstract: The effect of silane coupling agent modified metakaolin on workability, strength and permeability of concrete was investigated. MIP and SEM were used to study the mechanism. The experimental results show that the workability of concrete significantly increases with the incorporation of modified metakaolin. Modified metakaolin mixtures have positive effect on the compressive strength of concrete, Also MMK modifies the pore structure and optimize the interfacial transition zone.

田焜,孔贇,王月蘭,等.硅烷偶聯劑改性偏高嶺土對混凝土抗滲性的影響[J].混凝土與水泥制品,2018(3):25-28+34. TIAN K,KONG Y,WANG Y L,et al.Influence of Metakaolin Modified by Silence Coupling Agent on the Permeability of Concrete[J].China Concrete and Cement Products,2018(3):25-28+34.

自密實混凝土力學性能研究進展

肖茁良

２０18年第3期

摘要

引用本文

摘??要：以國內外自密實混凝土力學性能方面的研究為基礎，綜述了影響自密實混凝土力學性能的因素。根據已有研究成果，總結分析了抗壓強度、抗拉強度、彈性模量以及抗折強度四個力學性能指標，并針對自密實混凝土力學性能的研究方向提出了建議。Abstract:Theinfluentialfactorsonthemechanicalperformanceofself-compactingconcreteareintroducedbasedontheforeignanddomesticresearchonthemechanicalpropertyofself-compactingconcrete.Accordingtotheexistingresearchresults,thefourmechanicalpropertiesofself-compactingconcreteincludescompressivestrength,tensilestrength,elasticmodulusandflexuralstrengthareexplained.Finally,somesuggestionsontheresearchdirectionofthemechanicalperformanceofself-compactingconcreteareputforward.

肖茁良.自密實混凝土力學性能研究進展[J].混凝土與水泥制品,2018(3):29-34. XIAO Z L.Study Progress of Mechanical Performance of Self-compacting Concrete[J].China Concrete and Cement Products,2018(3):29-34.

整體預制拼裝式綜合管廊接頭型式與防水構造探討

焦勇強，史長城，索告

２０18年第3期

摘要

引用本文

摘要：地下綜合管廊是未來城市建設的重點發展方向，相比現澆法，預制綜合管廊在質量、工期、成本等方面具有較大優勢，且其接頭型式與防水構造是管廊發揮其功能的關鍵節點?？偨Y了整體預制拼裝式綜合管廊常用的接頭型式、防水構造以及常用密封膠圈型式，分析了其優缺點及適用范圍，提出了一些建議，為今后綜合管廊接頭型式及防水構造的設計與改進提供參考。 Abstract: Utility tunnel is the key development direction of urban construction in the future, compared with cast utility tunnel, precast utility tunnel shows great advantages in quality, construction period and cost, which is the direction of development of utility tunnel in the future，and the joint type and waterproof construction of precast utility tunnel are the key nodes of tunnel to play its function. The whole precast utility tunnel joint types, waterproof construction and common seal form are summarized, the advantages and disadvantages and applicability are analyzed, and some suggestions are put forward to provide ideas for future design and improvement of utility tunnel joint types and waterproof structure.

焦勇強,史長城,索告.整體預制拼裝式綜合管廊接頭型式與防水構造探討[J].混凝土與水泥制品,2018(3):35-38. JIAO Y Q,SHI C C,SUO G.Discussion on Joint Type and Waterproof Structure of the Whole Precast Assembly Utility Tunnel[J].China Concrete and Cement Products,2018(3):35-38.

立式振動成型工藝混凝土骨料選用的探討

談維漢，侯雷，曾鴻

２０18年第3期

摘要

引用本文

摘要：根據Colle骨料粒級分布圖，對比分析了混凝土用不同骨料顆粒級配，并結合實際生產情況，探討了滿足立式振動工藝生產所需的最佳砂率。 Abstract: According to the Colle aggregate size distribution map, the aggregate gradation of different aggregate was compared and analyzed, combined with the actual production situation, the optimal sand ratio to meet the vertical vibration production process was discussed.

談維漢,侯雷,曾鴻.立式振動成型工藝混凝土骨料選用的探討[J].混凝土與水泥制品,2018(3):39-41. TAN W H,HOU L,ZENG H.Discussion on the Selection of Concrete Aggregate for Vertical Vibration Process[J].China Concrete and Cement Products,2018(3):39-41.

綜合管廊在燃氣倉內爆炸作用下的結構動力響應數值分析

孫加超1，鄧勇軍1,2，姚勇1,2，吳曉鳳1，牛振坤1

２０18年第3期

摘要

引用本文

摘??要：利用LS-DYNA有限元軟件，模擬了綜合管廊燃氣倉內爆炸的情況。通過改變炸藥量，分析了城市綜合管廊結構的破壞模式，超壓與位移規律。結果表明，炸藥量對燃氣倉影響較大，對電力倉影響不大。隨著炸藥量的增大，綜合管廊破壞越嚴重，且破壞處均為墻板交接處與混凝土板中間位置。綜合管廊多數位置的超壓時程曲線，位移時程曲線基本遵循隨著炸藥量的增加而增加，少數位置后半時程出現的差異與內爆過程中管廊墻板裂縫具有很大的關系。Abstract：Theurbancomprehensivecorridoristhelifelineinfrastructureofthecity.Inordertoobtainthedynamicresponseoftheutilitytunnelstructureunderexplosion,theLS-DYNAwasusedtosimulatetheexplosioninthegasGalleryofthepipegallery.Bychangingtheexplosiveamount,thefailuremodes,overpressureanddisplacementlawsoftheurbancomprehensivecorridorstructureareanalyzed.Theresultsshowthattheexplosivedosagehasgreatinfluenceonthegasstoragechamber,andhaslittleeffectonthepowerstorageroom.Withtheincreaseofexplosivedosage,thedamageoftheutilitytunnelismoreserious,andthedamageplaceisthemiddlepositionbetweenthewallboardjointandtheconcreteslab.Theoverpressuretimecurveanddisplacementtimecurveofmostofthepipegalleryfollowtheincreaseofexplosivechargebasically,andthefluctuationofthesecondhalfoftheindividualpositionhasagreatrelationshipwiththecracksinthewalloftheutilitytunnelduringtheimplosion

孫加超,鄧勇軍,姚勇,等.綜合管廊在燃氣倉內爆炸作用下的結構動力響應數值分析[J].混凝土與水泥制品,2018(3):42-47. SUN J C,DENG Y J,YAO Y,et al.Numerical Analysis on Structural Dynamic Respond of Utility Tunnel under the Role of Internal Explosion in Gas Gallery[J].China Concrete and Cement Products,2018(3):42-47.

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