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    蘇州混凝土水泥制品研究院有限公司

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    第十一期

    預處理飛灰與水泥的固化效果研究
    預處理飛灰與水泥的固化效果研究
    • 宋旭艷1,韓靜云1,呂正勇2,姜正平1,郜志海1
    2013年第11期
    摘要
    引用本文
    摘??要:以城市垃圾焚燒灰為主要研究對象,采用水、磷酸分別對其進行預處理,對預處理后的飛灰采用水泥進行固化,測定固化體系的凝結時間、凈漿抗壓強度、無側限抗壓強度等物理力學性能,并檢測固化體系的重金屬浸出毒性。試驗結果表明,固化體系的凝結時間隨著水泥摻量的增加而縮短,水泥摻量超過20%時,固化體系的終凝時間能控制在10h以內;體系的凈漿抗壓強度、無側限抗壓強度均隨著水泥摻量的增加而增大,其中,各固化體系的無側限抗壓強度值均達到穩定土填埋強度值(1.5MPa),重金屬浸出濃度滿足國家毒性濃度危險標準值(5~100mg/L)。Abstract:MunicipalSolidWasteIncineration(MSWI)Ashwaspretreatedusingwaterorphosphate,then,pretreatedMSWIashwassolidifiedbycement.Thesettingtime,compressivestrengthofthepaste,unconfinedcompressivestrengthandotherphysicalandmechanicalpropertiesofthesolidificationsystemaswellasitsheavymetalsleachingtoxicityweremeasured.Theresultsshowthatwiththeincreasingofcementcontent,thesettingtimeofsolidificationsystemshorten,andwhenthecementcontentismorethan20%,thefinalsettingtimeofthesystemcanbecontrolledwithin10h.Thecompressivestrengthofthepasteandunconfinedcompressivestrengthofsolidificationsystemincreasewiththeincreasingofcementcontent.Theunconfinedcompressivestrengthofeachsystemcanreachthestablesoillandfillstrengthvalues(1.5MPa).Theconcentrationofheavymetalscanmeetthenationaltoxicconcentrationsriskstandardvalue(5~100mg/L).
    建筑垃圾人工砂配制混凝土試驗研究
    建筑垃圾人工砂配制混凝土試驗研究
    • 姜新佩1,李 瑩1,張勝彥2,孟祥東3
    2013年第11期
    摘要
    引用本文
    摘 要:研究了邯鄲地區用磚混結構建筑垃圾生成的建筑垃圾人工砂的粒徑、堆積密度、吸水率、壓碎值指標等基本物理性能,分別以0、50%、100%的建筑垃圾人工砂等量取代天然細骨料配制不同強度等級混凝土,檢驗混凝土拌合物的性能、力學性能及耐久性能,探討了建筑垃圾人工砂不同取代率對混凝土性能的影響。試驗結果表明,建筑垃圾人工砂完全代替天然砂用于C60及以下強度等級的混凝土中是可行的,隨著取代率的提高,混凝土強度有所降低;混凝土強度越高,降低幅度越大。 Abstract: The basic physical properties of construction waste artificial sand such as particle size, bulk density, water absorption, crushing value index were studied systematically and the construction waste artificial sand was made from construction waste of brick structure in Handan region. Different strength grade concrete was prepared by using 0, 50% and 100% of the construction waste artificial sand equivalent to replace mineral fine aggregate. The performance, mechanical properties and durability of the concrete mixture are tested, and the effect of different replace ratio of construction waste artificial sand on the performance of concrete is discussed. The experimental results show that it is feasible that construction waste artificial sand completely replaces natural sand of fine aggregate to prepare less than or equal to C60 strength grade concrete; with the improvement of replacement ratio, concrete strength reduce; the higher the concrete strength is, the bigger the strength reduction is.
    蒸壓殼層陶粒組成對混凝土強度的影響研究
    蒸壓殼層陶粒組成對混凝土強度的影響研究
    • 馬海龍1,崔 崇2
    2013年第11期
    摘要
    引用本文
    摘??要:氯醇法工藝生產環氧丙烷產生的固體廢棄物環氧丙烷渣對環境污染非常大,試驗針對環氧丙烷渣綜合利用展開研究。通過環氧丙烷渣中的Ca(OH)2與粉煤灰在(180℃,8h)飽和蒸汽條件下水熱合成,制備出以水化硅酸鈣托貝莫來石為主要水化相的陶粒。在水灰比一定的情況下,以環氧丙烷渣陶粒為粗集料,配制了不同陶粒的混凝土。通過正交實驗法,研究了水熱合成環氧丙烷渣陶粒組成對混凝土抗壓強度的影響規律。試驗結果表明,環氧丙烷渣陶粒的石英砂含量、鈣硅比、殼層厚度是影響混凝土抗壓強度的顯著因素。Abstract:Thepropyleneoxidesludgeproducedduringtheproducingofepoxypropaneusingtheemulsifcationprocessisharmfultotheenvironment,sothecomprehensiveutilizationofthepropyleneoxidesludgeisstudied.Ca(OH)2fromthepropyleneoxideslagandflyash(180℃,8h)weresynthesizedinconditionsofsaturatedsteam,then,theceramsitewithhydratedcalciumsilicatetobermoriteasmainhydrationphasewasprepared.Differentceramsiteconcreteswerepreparedwiththesamewatercementratioandusingthepropyleneoxideslagascoarseaggregate.Theinfluencelawofthecomponentofpropyleneoxideslagceramsitebyhydrothermalsynthesisoncompressivestrengthoftheconcreteisstudiedbyorthogonaltest.Thetestresultsshowthatthequartzsandcontent,calcium-siliconratioandshellthicknessoftheepoxypropaneslagceramsitearethekeyinfluencingfactorsonthecompressivestrengthofconcrete.
    蒸壓輕質砂加氣混凝土(AAC)砌塊施工的技術措施分析
    蒸壓輕質砂加氣混凝土(AAC)砌塊施工的技術措施分析
    • 蘇永波1,張小富1,陳家平2
    2013年第11期
    摘要
    引用本文
    摘 要:蒸壓輕質砂加氣混凝土砌塊可減輕建筑物的自重、減小結構構件尺寸,提高建筑物隔聲、保溫、防火、抗滲和裝飾等性能,滿足現代建筑物綜合性需求。本文介紹了蒸壓輕質砂加氣混凝土砌塊在施工中的具體措施,在保證工期的前提下,還可提高砌筑工程的質量。 Abstract:In order to meet the comprehensive needs of modern buildings, lightweight autoclaved aerated concrete block can not only reduce the weight and size of structural component, but also improve the sound insulation, thermal insulation, fire prevention, anti seepage, decorative performance of buildings and so on. The specific construction measures for the concrete block are introduced. And it points out that the methods can improve the quality of building project on the premise of guarantee time limit for a project.
    沙漠地區高溫干燥環境下混凝土施工技術
    沙漠地區高溫干燥環境下混凝土施工技術
    • 張秋祥
    2013年第11期
    摘要
    引用本文
    摘 要:以沙特阿拉伯王國新建南北鐵路工程為依托,針對沙漠炎熱干燥環境下高性能混凝土施工與質量控制,從超高溫、長距離、大坍落度混凝土施工控制幾個方面,提出了混凝土耐久性的技術保證措施。 Abstract:Based on New-built North-South Railway Project in KSA where the high performance concrete construction and its quality control should be carried out under the high temperature and dry environment in desert, the technology guarantee measures are put forward about concrete durability from the following aspects such as extra-high temperature, long distance, large slump concrete construction control and so on.
    管樁滾焊機新型焊接電極的研發與應用
    管樁滾焊機新型焊接電極的研發與應用
    • 趙瑞軍,王立旺,關利民
    2013年第11期
    摘要
    引用本文
    摘??要:分析研究了目前旋轉電極結構對能耗、電極壽命及管樁質量的影響以及固定電極結構對電極使用壽命的影響。介紹了一種新型焊接電極,并指出,使用新型旋轉電極和固定電極后,電極壽命明顯提高,節能效果顯著,同時可提高管樁質量。Abstract:Theinfluenceofthecurrentrotatingelectrodestructureonenergyconsumption,electrodelifeandpilequalityandtheinfluenceofthecurrentfixedelectrodestructureontheservicelifeoftheelectrodeareanalyzed.Anewtypeofweldingelectrodeisputforward,anditpointsoutthatafterusingtheweldingelectrode(includingrotatingelectrodeandthefixedelectrode),theelectrodelifecanbeprolonged,energy-savingeffectisremarkable,andmeanwhile,thequalityofthepilescanbeimproved.
    PBL剪力連接件承載力計算
    PBL剪力連接件承載力計算
    • 馬千里,黃炳生,蘇輔磊
    2013年第11期
    摘要
    引用本文
    摘 要:PBL剪力連接件是一種新型的剪力連接件,具有較高的抗剪承載力。闡述了連接件的破壞機理,分析了混凝土強度、開孔鋼板孔洞直徑和個數、鋼板端部截面積以及貫穿鋼筋的直徑和強度對PBL剪力連接件承載力的影響。并根據這些試驗結果回歸出了有和沒有端部混凝土承載作用時PBL剪力連接件極限承載力的計算表達式。 Abstract: As a new type of shear connector, PBL shear connector has high shear resistance. The failure mechanism of the PBL shear connector is described, and the influence of the factors which include concrete strength, diameter and number of connector holes, cross-sectional area of the end of the connector, diameter and strength of transverse rebar on the bearing capacity of PBL shear connector is analyzed. In addition, according to the test results, the equations for predicting the ultimate bearing capacity of PBL shear connector with and without considering end bearing effect are put forward.
    AutoCAD在道面混凝土孔結構研究中的應用
    AutoCAD在道面混凝土孔結構研究中的應用
    • 王欣宇方1,武 衛1,沈 哲2,李永毅2,梁 峰2,潘志鋒2 ,王思揚1
    2013年第11期
    摘要
    引用本文
    摘 要:使用高分辨率掃描儀獲取道面混凝土截面照片,基于AutoCAD繪圖技術標繪微氣孔,并導出氣孔二維數據,然后編程計算孔結構參數。實驗表明,與導線法相比,此方法表征氣泡孔徑時更接近真實情況,且得出的氣泡間距與導線法氣泡間距系數有良好的相關性?;诔闃訖z測的思路,設計了簡化方法,減少了繪制工作量。簡化結果顯示,孔徑、氣泡間距、硬化混凝土含氣量的精度都大于95%,且抽樣樣本方差亦可表征抗凍性能的優良。 Abstract: Based on AutoCAD drawing technique, micro-pores were plotted manually on the picture of pavement concrete cross section got by high-resolution scanners. Using the exported 2-D data, pore structure parameters were calculated. The results show that using the CAD method mentioned above to characterize the pore diameter is closer to the real situation comparing with the traverse method. The pore spacing got by the CAD methods and the pore spacing coefficient got by the traverse method have positive linear correlation. Based on sampling detection, the characterization method is simplified, which can reduce the workload. The simple results show that the precision of pore size, pore spacing, air content of hardening concrete is over 95%, and the variance of the sample can also characterize anti-freeze performance.
    再生混凝土保溫砌塊性能研究
    再生混凝土保溫砌塊性能研究
    • 謝靜靜,朱平華,李美娟
    2013年第11期
    摘要
    引用本文
    摘 要:通過正交試驗,研究了再生混凝土保溫砌塊的力學性能、耐久性、保溫性能受相關配合比因素影響的規律。結果表明:再生混凝土保溫砌塊在合理的配比下可做承重外墻墻材使用;質量損失率滿足相關耐久性要求,砌筑的墻體節能率達到50%。 Abstract: According to orthogonal experiment, the influence rules of mix proportion on the strength, durability and heat preservation of recycled concrete insulation block are studied. The results show that the compressive strength of the recycled concrete insulation block can reach to MU5.0 using the rational mix proportion, and it can be used to make the heat preservation wall; in addition, the mass loss rate of the concrete block can also meet the relate needs of durability, and its energy saving rate can reach up to 50%.
    水泥-粉煤灰發泡保溫材料的制備與性能研究
    水泥-粉煤灰發泡保溫材料的制備與性能研究
    • 王裕銀,滿麗瑩,王忠平,賈 濤,陳 洪
    2013年第11期
    摘要
    引用本文
    摘 要:以快硬硫鋁酸鹽水泥、粉煤灰、發泡劑、穩泡劑、聚丙烯纖維、防水劑為主要原材料,經化學發泡成型工藝制備水泥-粉煤灰發泡保溫材料。實驗研究了化學發泡劑對發泡保溫材料體積密度、導熱系數、強度的影響;穩泡劑對發泡保溫材料泡孔結構、導熱系數、強度的影響;聚丙烯纖維對發泡保溫材料抗折強度的影響以及防水劑對發泡保溫材料防水性能的影響。確定了水泥-粉煤灰發泡保溫材料成型工藝參數。研制的水泥-粉煤灰發泡保溫材料具有防火功能,同時還具有質輕、保溫、抗凍性好等特點,其各項性能均達到國家相關標準要求。 Abstract: Cement, fly ash, foaming agent, foam stabilizer, polypropylene fiber and water-proofing agent are used as raw materials to manufacture cement-fly ash foaming thermal insulation material. The effects of chemical foaming agent on volume density, thermal conductivity and strength of foaming thermal insulation material are studied. The influences of foam stabilizer on foam structure, thermal conductivity and strength are discussed, and the effects of the polypropylene fiber on flexural strength, the waterproof agent on water-proofing performance are also studied. The technique parameter of cement-fly ash foaming thermal insulation material is gotten by experiment. Cement-fly ash foaming thermal insulation material is characterized by fireproofing, lightweight, thermal insulation and freezing resistance, these above properties are all accordance with the rules of relative national standards.
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