第十期_2017_《混凝土與水泥制品》雜志社

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第十期

煅燒水滑石對海水海砂混凝土性能影響的研究

喬治1，張磊1,2，王志杰3，楊久俊1,2

２０17年第10期

摘要

引用本文

摘??要：通過分析陽極極化電位-時間曲線、Cl－固結能力、水泥凈漿的pH值來研究煅燒水滑石（CLDH）對海水海砂混凝土護筋性的影響，并與礦渣和粉煤灰進行比較。此外，還研究了煅燒水滑石對海水海砂混凝土力學性能的影響。結果表明，煅燒水滑石、礦渣、粉煤灰單摻摻量分別為6%、50%、20%時，海水海砂混凝土護筋性較好，Cl－固結能力較好。護筋性與Cl－固結能力呈現出良好的相關性。礦物摻合料摻量越高，水泥凈漿pH越低；煅燒水滑石摻量越高，水泥凈漿pH越高。改善海水海砂混凝土護筋性的能力依次為：煅燒水滑石＞礦渣＞粉煤灰，礦物摻合料對護筋性的影響十分有限。煅燒水滑石降低海水海砂混凝土的3d強度，但可增加海水海砂混凝土28d強度。Abstract:TheeffectofCLDH(CalcinedLayerdDoubleHydrixide)onrebar-protectingpropertiesofseawater-seasandconcretewasstudiedbyanalyzingcurveofrebarpolarizationandtime,chlorideioncombination,pHvalueofcementpasteandcomparedwiththeeffectofslagandflyash.Inaddition,themechanicalpropertiesofseawater-seasandconcretearealsostudied.TheresultsshowthatwhentheCLDHcontentis6%,theslagcontentis50%andtheflyashcontentis20%,rebar-protectingpropertiesofseawater-seasandconcreteisrelativelysuperior,chlorideioncombinationisrelativelysuperior.Thereisthegoodcorrelationbetweenchlorideioncombinationandrebar-protectingproperties.Themoreadmixturecontent,thelowerpHvalueofcementpaste;ThemoreCLDHcontent,thehigherpHvalueofcementpaste.Theabilityofimprovementofrebar-protectingpropertiesisinsequenceofCLDH＞slag＞flyash,theadmixturehaslimitedimprovementontherebar-protectingproperties.CLDHcandecreasethe3dstrengthofseawater-seasandconcrete,butincreaseits28dstrength.

喬治,張磊,王志杰,等.煅燒水滑石對海水海砂混凝土性能影響的研究[J].混凝土與水泥制品,2017(10):1-5. QIAO Z, ZHANG L, WANG Z J,et al.Influence Research of Calcined Layerd Double Hydrixide on Performance of Seawater-seasand Concrete[J].China Concrete and Cement Products,2017(10):1-5.

內摻硅樹脂乳液的防水效果及抗氯離子侵蝕性能研究

田礫，顧曉帆,楊可，邱松，王鵬剛

２０17年第10期

摘要

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摘要：為了研究內摻硅樹脂乳液在水泥基材料中的防水效果及其抗氯離子侵蝕性能，設計了五種不同硅樹脂乳液摻量（0、1%、2%、3%、4%）的試驗對照組，并對其進行了接觸角試驗、毛細吸鹽試驗以及氯離子侵蝕試驗，對比分析出此類防水劑功效。結果表明：1%的硅樹脂乳液便可以使接觸角大于90°，即摻加硅樹脂乳液使得水泥基材料具有了憎水性；并且隨著摻量的增加，水泥基材料的憎水性愈強，且抗氯離子侵蝕性能也顯著增加。 Abstract: In order to study the waterproofing effect of silicone emulsion in cement-based materials and its resistance to chloride ion erosion, five different silicone emulsion concentrations ( 0, 1%, 2%, 3%, 4% ) were designed as test control groups. Contact angle test, capillary salt absorption test, and chloride ion erosion test were performed to compare and analyze the effectiveness of such waterproof agent. The results show that adding silicone emulsion to cement based materials has a good waterproof and good anti-chloride ion erosion effect. Contact angle will exceed 90 degree even in the condition of 1% silicone emulsion adding and the effect is getting more significant with the increase concentration of silicone emulsion.

田礫,顧曉帆,楊可,等.內摻硅樹脂乳液的防水效果及抗氯離子侵蝕性能研究[J].混凝土與水泥制品,2017(10):6-8. TIAN L, GU X F, YANG K,et al.Study on Waterproof Effects and Resistance to Chloride Ion Erosion of Silicone Emulsion[J].China Concrete and Cement Products,2017(10):6-8.

新型負溫套筒灌漿料性能試驗研究

李兵，馬正先，杭鑫坤，逄魯峰，劉巧玲，常青山

２０17年第10期

摘要

引用本文

摘要：套筒灌漿料是裝配式建筑鋼筋與套筒連接的關鍵材料，為了滿足冬季施工的要求，分別研制出操作時間較長的P-1型和強度較高的P-2型兩種負溫套筒灌漿料，并對其豎向膨脹率、抗折強度、抗壓強度等主要性能進行了測試分析。研究表明，兩種套筒灌漿料各項性能指標均符合JG/T 408—2013《鋼筋連接用套筒灌漿料》的要求。 Abstract: Cementitious grout is the key material to the steel connected with the sleeve of prefabricated building. In order to meet the requirements of winter construction, two kinds of negative temperature cementitious grout P-1 and P-2 are developed respectively. P-1 has a longer operating time, and P-2 has a high strength. The vertical expansivity, rupture strength, and compressive strength are tested and analyzed. The result show that the various performance indexes of two kinds of sleeve grouting material can meet the requirements of JG/T 408—2013 Cementitious grout for coupler of rebar splicing.

李兵,馬正先,杭鑫坤,等.新型負溫套筒灌漿料性能試驗研究[J].混凝土與水泥制品,2017(10):9-13. LI B, MA Z X, HANG X K,et al.Experimental Research on Properties of New Kind of Negative Temperature Cementitious Grout[J].China Concrete and Cement Products,2017(10):9-13.

基于梯度設計的地鐵管片混凝土抗滲性能研究

向佳瑜，袁吉童，冷政，李曦，蔣震

２０17年第10期

摘要

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摘要：針對長沙地鐵地下水充沛的特點，通過內摻水泥基滲透結晶型材料（簡稱CCCW）和硅灰，外涂CCCW和聚氨酯涂料的方法，制備地鐵管片混凝土。對其抗水滲透性能、抗氯離子滲透性能及早期收縮性能進行分析，并結合預制生產工藝，得出地鐵管片混凝土抗滲梯度設計及工程應用的技術措施。研究表明，CCCW對混凝土一次抗壓強度和一次抗滲性能沒有明顯改善，對其二次抗壓強度和二次抗滲性能則改善明顯；混凝土摻入硅灰有利于提高其抗滲性能，使其電通量減小，內部孔徑分布更合理；地鐵管片混凝土初凝后150h收縮率小于0.00020，早期收縮小可降低開裂風險。涂層改善地鐵管片混凝土抗滲性能較明顯，可用于惡劣的滲水環境，滿足抗滲梯度設計的需求。 Abstract: According to abundant groundwater environment of Changsha metro, mixed cementitious capillary crystalline waterproofing materials (hereinafter referred to as CCCW) and silica fume, coated CCCW and polyurethane, the metro segment concrete was prepared. The water impermeability, chloride ion impermeability and shrinkage performance of concrete were analyzed. Researches were combined with production process of prefabricated so that technical measures of concrete impermeability gradient design and engineering application were obtained. Results show that CCCW have no obvious improvement on primary compressive strength and impermeability of concrete, however, the secondary compressive strength and impermeability are improved significantly. Silica fume can improve the impermeability of concrete, decrease its electric flux and make inner pore distribution more reasonable. Metro segment concrete shrinkage rate is less than 0.00020 after initial set 150h so that crack risk can be reduced. Coating improves the impermeability obviously of metro segment concrete which can be used in harsh water environment to meet the impermeability gradient design requirement.

向佳瑜,袁吉童,冷政,等.基于梯度設計的地鐵管片混凝土抗滲性能研究[J].混凝土與水泥制品,2017(10):14-17. XIANG J Y, YUAN J T, LENG Z,et al.Study on Impermeability of Subway Segment Concrete Based on Gradient Design[J].China Concrete and Cement Products,2017(10):14-17.

生態混凝土制備及其植生性能試驗研究

唐瑞，劉筱玲，陳代果，范士錦

２０17年第10期

摘要

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摘要：選用16~20mm、20~25mm、25~30mm三種粗骨料級配，分別以普通硅酸鹽水泥、低堿硫鋁酸鹽水泥、普通硅酸鹽水泥-秸稈粉三種膠凝材料制備了生態混凝土。對其力學、物理性能及內部孔隙堿環境進行研究，并探究了不同種植模式下，各膠凝體系生態混凝土的可植性。結果表明，生態混凝土的抗壓強度隨粗骨料粒徑的增大而降低；粗骨料粒徑為16~20mm時，生態混凝土28d抗壓強度可達5.39MPa，孔隙率大于30%；低堿硫鋁酸鹽水泥制備的生態混凝土內部孔隙環境呈中性,可植生性表現優異；將秸稈粉作為摻合料加入硅酸鹽水泥中，制備的生態混凝土有一定吸附中和堿物質的作用，使混凝土孔隙環境能基本滿足植株的生長。 Absract: Using 16~20mm, 20~25mm, 25~30mm three kinds of coarse aggregate gradation, with ordinary Portland cement, low alkali salt sulphoaluminate cement, ordinary Portland cement-straw powder three kinds of gel material, the ecological concrete was prepared. The mechanical, physical properties, internal pore alkali environment and performance of its plants growth were studied. The results show that ecological concrete compressive strength reduce with the increase of coarse aggregate size. When the coarse aggregate particle size is 16~20mm, 28 days compressive strength of ecological concrete is 5.39MPa, porosity is greater than 30%. Ecological concrete internal pore environment is neutral prepared by low alkali salt sulphoaluminate cement and plant natural disposition is outstanding. Using the straw powder as admixture which could absorb some alkaline substances, and the concrete pore environment could basically meets the growth of plants.

唐瑞,劉筱玲,陳代果,等.生態混凝土制備及其植生性能試驗研究[J].混凝土與水泥制品,2017(10):18-23. TANG R, LIU X , CHEN D G,et al.Experimental Research on Preparation and Planting Performance of Eco-concrete[J].China Concrete and Cement Products,2017(10):18-23.

預制構件用C100高強混凝土配合比研究

樊俊江，於林鋒，管文，王瓊

２０17年第10期

摘要

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摘要：采用砂漿稠度儀對低水膠比（水膠比0.16）水泥凈漿的屈服剪切強度和塑性黏度進行定性表征，分析了礦物摻合料對低水膠比高強混凝土在流變學方面的意義。開展了常規原材料及工藝條件下C100高強混凝土的配比研究，分析了每m3膠凝材料用量、水膠比、砂率等因素對高強混凝土強度影響，基于漿骨比設計理論對混凝土配合比設計方法進行優化，提高混凝土的工作性能。對優選配比的C100高強混凝土綜合性能測試結果表明，混凝土具有較好的工作性能、力學性能和耐久性能，具有早期抗裂性能好、干燥收縮小、徐變系數低的特點，在混凝土預制構件中具有較好的應用前景。 Abstract: Yield shear strength and plastic viscosity of low water-binder cement paste was qualitatively characterized by mortar consistency tester to analyze the significance of mineral admixture on rheology of high strength concrete with low water-binder ratio. The mix proportion of C100 high strength concrete under conventional raw materials and technological conditions was studied by analyzing the influence of cementitious binder content, water-binder ratio, sand ratio on high strength concrete. The proportion of C100 concrete was optimized based on the theory of paste-aggregate ratio design. The comprehensive performances test results of optimum proportion show that C100 concrete has good working performance, mechanical properties and durability such as high early crack resistance, low dry shrinkage and low creep coefficient and has good application prospect in prefabricated concrete.

樊俊江,於林鋒,管文,等.預制構件用C100高強混凝土配合比研究[J].混凝土與水泥制品,2017(10):24-28. FAN J J, YU L F, GUAN W,et al.Study on Mix Proportion of C100 High Strength Concrete Used in Prefabricated Concrete[J].China Concrete and Cement Products,2017(10):24-28.

馬爾代夫混凝土原材料現狀分析

譚剛1,2，秦明強1,2，許成明3，胡駿1,2，胡家兵1,2

２０17年第10期

摘要

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摘??要：介紹了馬爾代夫混凝土原材料的現狀，調研了原材料的種類、來源及特性，并與中國援建項目的原材料進行了對比。調研結果表明，印尼PTSEMENPADANGP·Ⅰ42.5較華潤P·Ⅱ42.5水泥，不溶物含量和燒失量稍高，比表面積稍小、強度稍高；印度海德5~25mm碎石較廣西山中石場5～25mm碎石，級配稍差，吸水率、針片狀含量、含泥量和泥塊含量均較高；印度海德機制砂較福建隆教銘城機制砂，石粉含量比較低，MB值較大；印度Hitepozzo粉煤灰性能優良，能滿足我國標準Ⅰ級粉煤灰要求；馬爾代夫當地自來水和自制二級淡化海水均可用作預應力混凝土拌合用水。Abstract:ThecurrentsituationofconcreterawmaterialinMaldivesisintroduced,andthetypesofrawmaterial,itssourceandpropertyarestudied,thenthecontracttotherawmaterialusedinChinese-aidprogramiscarriedout.Theresearchshowsthat,PTSEMENPADANGP·Ⅰ42.5cementcomparedtoHUARUNP·Ⅱ42.5cement,hashighernomoltenmaterialandloss,butlowerspecificsurfaceareaandhigherstrength.The5～25mmcoarseaggregatesfromHaide,IndianTuticorincomparedtoZhongshanstoneplant,Guangxi,China,haveaworsegrading,andthewaterabsorption,flakinessindex,siltcontentandclaylumpcontentishigher.FineaggregatesfromHaide,IndianTuticorincomparedtoMingcheng,Fujian,China,haslowerstonepowdercontentandhigherMB.TheflyashfromHitepozzo,Indian,totallycansatisfywiththeⅠgradeflyashstandardinChina.ThedrinkingwaterandⅡgradedesalinationseawaterinMaldivescanbeusedfortheprestressedconcrete.

譚剛,秦明強,許成明,等.馬爾代夫混凝土原材料現狀分析[J].混凝土與水泥制品,2017(10):29-32. TAN G, QIN M Q ,XU C M,et al.Situation Analysis on Concrete Raw Material in Maldives[J].China Concrete and Cement Products,2017(10):29-32.

北京金安橋裝配式地鐵車站預制構件生產質量控制技術

劉昊1，趙利輝1，張寧1，呂麗萍1，蔣勤儉2，吳煥娟2

２０17年第10期

摘要

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摘要：依托北京市交通委明挖車站與暗挖區間裝配式結構技術研究與示范課題，研究了北京金安橋裝配式車站的預制構件生產技術與工藝、質量控制技術。針對裝配式車站預制構件的難點制定技術路線，對模具設計、混凝土設計、制作技術、運輸技術等進行了系統研究，并總結了生產過程中的質量控制經驗。 Abstract: Based on the cut station and excavation interval assembly structure technology research and demonstration project of Beijing Municipal Traffic Commission, the precast production technology, process and quality control technology of the Jinanqiao station are studied. According to the technical difficulties in the route for the assembly of prefabricated station, concrete design, mold design, production technology, transportation technology are systematically studied, and the experience of quality control in the production process are summarized.

劉昊,趙利輝,張寧,等.北京金安橋裝配式地鐵車站預制構件生產質量控制技術[J].混凝土與水泥制品,2017(10):33-38. LIU H, ZHAO L H, ZHANG N,et al.Production Quality Controlling Technology of Prefabricated Components Used in Jinanqiao Station of Beijing Subway[J].China Concrete and Cement Products,2017(10):33-38.

PCCP輸水管線的配管設計

王娜

２０17年第10期

摘要

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摘要：概述了PCCP輸水管線的配管設計要點，介紹了鎧裝管的配管設計及配件管有效安裝尺寸的確定，指出了PCCP輸水管線配管設計應注意的問題，可為實際工程提供參考。 Abstract: The key points of PCCP piping design of water pipelines are summarized, the piping design and the effective installation size determine of accessories sheathed tube are introduced, the problems of the PCCP water pipeline piping design are pointed out, which provides a reference for practical engineering.

王娜.PCCP輸水管線的配管設計[J].混凝土與水泥制品,2017(10):39-42. WANG N.Piping Designing of PCCP Water Pipelines[J].China Concrete and Cement Products,2017(10):39-42.

聚羧酸分子結構對新拌免壓蒸管樁混凝土的影響

昂源1，王萬金1，孔韜1, 2，劉俊元1，賀奎1，夏義兵1，王子明2

２０17年第10期

摘要

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摘要：研究了聚羧酸減水劑分子結構中幾個因素，包括PEO接枝密度、側鏈長短、減水劑分子量大小以及小分子單體的引入等，對新拌免壓蒸PHC管樁混凝土的靜漿流動度、減水劑分散時間以及蒸養強度的影響。結果表明，較低的PEO接枝密度、較長的側鏈、適中的鏈轉移劑摻量以及較低的AMPS摻量將提高減水劑的減水率；較低的PEO接枝密度、較短的側鏈、較高的鏈轉移劑摻量以及較低的AMPS摻量將縮短減水劑的分散時間；較高的PEO接枝密度、較長的側鏈、較低的鏈轉移劑摻量以及更多的AMPS摻量將提高免壓蒸PHC管樁混凝土的蒸養強度。 Abstract: The influence of several factors including PEO side chain density, PEO side chain length, dosage of THA and AMPS on the polycarboxylate superplasticizeron fresh non-steam autoclaved PHC concrete are investigated through themini slump loss, dispersion time of water reducer and steam curing strength. The results showed that the lower PEO side chain density, longer PEO side chain and medium THA dosage and lower dosage of AMPS will reduce the water reducing rate. Dispersion time of water reducer will be shortened with lower PEO side chain density, shorter PEO side chain, higher dosage of THA and lower content of AMPS. Higher PEO side chain density, longer PEO side chain, lower THA dosage and more AMPS will increase the curing strength of non-steam autoclaved PHC concrete curing strength.

昂源,王萬金,孔韜,等.聚羧酸分子結構對新拌免壓蒸管樁混凝土的影響[J].混凝土與水泥制品,2017(10):43-47. ANG Y, WANG W J, KONG T,et al.Effects of Molecular Structure of Polycarboxylate on Fresh Non-steam Autoclaved Pile Concrete[J].China Concrete and Cement Products,2017(10):43-47.

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