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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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    第一期

    摻鋰渣C50高性能混凝土的力學與徐變性能
    摻鋰渣C50高性能混凝土的力學與徐變性能
    • 劉來寶
    2012年第1期
    摘要
    引用本文
    摘 要:以12%的鋰渣超量取代水泥配制C50高性能混凝土,并測試了混凝土的力學與徐變性能及其隨養護齡期的變化規律。試驗結果表明,鋰渣的摻入,未對混凝土早期力學性能產生負面影響,而后期強度還較未摻試樣有一定程度的提高;摻鋰渣混凝土的徐變變形在加載的初始7d內變化較快,180d以后基本趨于穩定,各齡期皆小于未摻試樣。 Abstract: C50 high performance concrete by replacing cement with 12% lithium slag is prepared, and the mechanical and creeping properties of concrete and the change law of the behaviors with the curing time are tested. The experimental results show that there is no negative effects on the early age mechanical behavior of the concrete by adding into lithium slag and the mechanical strength has been improved at the later age compared with the one without lithium slag. The creeping deformation of lithium slag concrete changes a lot in 7 days but mostly levels off after 180 days, and the data of creeping behaviors of all curing ages are less than that of the concrete without lithium slag.
    利用廢棄混凝土制備建筑砂漿的研究
    利用廢棄混凝土制備建筑砂漿的研究
    • 薄向國,徐麗娜,楊 莉,張豐慶,田清波
    2012年第1期
    摘要
    引用本文
    摘??要:將廢棄混凝土經不同溫度預處理后,添加10%~20%的水泥,制備建筑砂漿。結果表明:預處理溫度低于700℃時,隨著預處理溫度的提高,破碎后細粉所占比例逐漸提高,破碎顆粒粒型逐漸良好,制得的砂漿性能逐漸提高。添加10%水泥的情況下,砂漿的抗壓強度為2.1MPa,隨著水泥添加量的提高,砂漿的抗壓強度逐漸提高。提高混凝土的預處理溫度,砂漿的強度也逐漸增強。在預處理溫度達到600℃后,添加20%水泥砂漿的抗壓強度達到36.2MPa。Abstract:Thebuildingmortarispreparedfromwasteconcrete,whicharethermal-treatedatvarioustemperaturesandadded10%~20%cement.Theresultsshowthatwhenthepre-treatmenttemperatureislowerthan700℃,withtheincreaseofpre-treatmenttemperature,thevolumeofthefinepowderisincreasing,theparticletypesofcrushingparticlesarebecomingbetterandtheperformancesofmortarareimproving.Thecompressivestrengthofmortaris2.1MPaadding10%cement,andthecompressivestrengthofmortarincreaseswiththeincreaseofcementadditions.Thecompressivestrengthofmortaralsoincreaseswiththeincreaseofpre-treatmenttemperature.Whenthepre-treatmenttemperatureisupto600℃,thecompressivestrengthofmortaris36.2MPawith20%cement.
    中國兒童博物館地下工程混凝土裂縫控制技術
    中國兒童博物館地下工程混凝土裂縫控制技術
    • 吳會閣,王曉中
    2012年第1期
    摘要
    引用本文
    摘 要:介紹了中國婦女兒童博物館地下工程混凝土的裂縫控制技術,通過方案的對比及論證,最終確定混凝土采用60d強度評定標準,在配比上加大摻合料用量,不采用膨脹劑,采用部分?;郀t磨細礦渣粉,并在施工中采取切實、有效的“跳倉法”工藝,使工程質量達到了高標準。 Concrete cracks control technology for underground engineering in the Chinese museum of women and children is introduced. Through the comparison and demonstration of the scheme, it is finally confirmed that 60 days concrete strength evaluation standard is used, the amount of admixtures in mix proportion is increased, the expansive agent is cancelled, the partial ground granulated blast furnace slag powder is used and the process of pouring by separate strips is taken during the construction to make the engineering quality become high level.
     《鋼纖維混凝土檢查井蓋》標準解讀
    《鋼纖維混凝土檢查井蓋》標準解讀
    • 奚飛達,任慶文,湯關祚
    2012年第1期
    摘要
    引用本文
    摘 要:GB26537-2011《鋼纖維混凝土檢查井蓋》國家標準已正式頒布,將于2012年4月1日開始實施。為了便于標準使用各方準確貫徹實施標準的具體要求和規定,本文介紹了標準的編制背景、編制目的和意義,對標準的主要條款進行了解讀,并提出了標準實施過程中應注意的幾個問題。 Abstract: The national standard GB26537-2011 has been officially issued, which will implement on April 1st, 2012. In order to carry out and implement the specifications of the standard, the compilation background, compilation purpose and meanings of the standard are introduced, the main issues of the standard are interpreted, and the attention problems during the standard implementation process are proposed.
    常用砌塊填充墻變形分析及裂縫機理研究
    常用砌塊填充墻變形分析及裂縫機理研究
    • 帥華國,周開富
    2012年第1期
    摘要
    引用本文
    摘 要:蒸壓粉煤灰砌塊、蒸壓加氣混凝土砌塊和普通混凝土小型砌塊是應用廣泛的填充墻體材料,這類砌塊填充墻體很容易出現裂縫,是目前建筑工程質量主要質量通病之一。本文通過對這三種砌塊墻體的變形監測,研究了墻體變形規律,提出了相應的砌塊墻體裂縫控制措施。 Abstract: Autoclaved fly ash blocks, autoclaved aerated concrete blocks and concrete small hollow blocks are the widespread application filled wall materials. Such blocks filled walls are very easy to appear cracks, which is one of main common failings in currently architectural engineering quality. In this paper, through three kinds of block walls’ deformation monitoring, the wall deformation rule is studied, and the corresponding crack control measures of block walls are proposed.
    薄壁箱形構件預應力鋼束凈保護層厚度的討論
    薄壁箱形構件預應力鋼束凈保護層厚度的討論
    • 肖林峻
    2012年第1期
    摘要
    引用本文
    摘 要:根據30m跨徑預應力混凝土足尺薄壁箱梁的試驗研究,分析了在張拉階段底板沿預應力鋼束縱向開裂的原因。對薄壁箱形預應力混凝土構件,提出了在考慮獲得所需縱向預應力的同時,應計入泊松效應和預應力鋼束對構件變形產生的反向作用力的不利影響,并從工程設計角度建立了分析模型,提出了確定預應力鋼束下保護層厚度的建議公式。 Abstract:Based on the experiment of a 30m-span prestressed concrete thin-wall box-beams, the reason for the longitudinal cracks of the floor appearing along the prestressed steel during the tensioning period is analysed. For the thin-wall box-beams prestressed components, the disadvantaged influences resulted from both Poisson effect and opposite acting force due to the deformation of beams are considered while the needed longitudinal prestressed force is acquired. And the analysis model from the engineering design’s viewpoint is established. The suggested formula of the concrete protective layer thickness under the prestressed steel is propose
    圓鋼管混凝土受壓短柱試驗研究及有限元仿真分析
    圓鋼管混凝土受壓短柱試驗研究及有限元仿真分析
    • 李月安
    2012年第1期
    摘要
    引用本文
    摘 要:通過對基于不同長細比的圓鋼管混凝土短柱的受壓力學試驗,對其破壞現象及機理進行了分析;探討了長細比對該類構件力學性能的影響規律,同時分析了該類構件中鋼管對核心混凝土的約束作用。建立三維精細有限元模型,比較分析了數值模擬結果和試驗結果,并確定了鋼管及混凝土的破壞準則和其本構關系的合理性,從而為該類構件的設計提供了可靠的理論依據 Abstract: The compressed mechanical experimental study on the different slenderness ratio of concrete filled circle steel tube short columns is conducted, and the failure phenomenon and mechanism are analyzed. The influence rule of the slenderness ratio on mechanical properties of this kind of component is discussed, meanwhile, the restriction effect of steel tube on core concrete is analyzed. The 3D finite element model is established. The numerical simulation result and test result are compared and analyzed. The failure criterion of the steel tube and concrete and the rationality of its constitutive relation are determined, therefore, the reliable theory basis for the design of this kind of components can be provided.
    聚丙烯纖維混凝土鋼筋網殼復合襯砌模型試驗研究
    聚丙烯纖維混凝土鋼筋網殼復合襯砌模型試驗研究
    • 閭 沛,龐建勇,桑普天
    2012年第1期
    摘要
    引用本文
    摘 要:利用大型地下結構試驗臺,進行了圍壓作用下聚丙烯纖維混凝土鋼筋網殼復合襯砌模型試驗,研究了該支護結構的力學性能和承載能力以及支護系統的變形、破壞形態與發展規律,可為理論分析計算和工程應用提供依據。 Abstract: By large scale underground structure research platform, the experiments of the polypropylene concrete bar shell composite lining modal under confining pressure are carried out. The mechanical performance, loading capacity, deformation, damage form and developing laws of the support structure are studied, which can offer the basis of theoretic analysis and calculation and engineering application.
    GFRP用量及倒角半徑影響約束素混凝土柱體的試驗研究
    GFRP用量及倒角半徑影響約束素混凝土柱體的試驗研究
    • 劉華新,王衛侖,王學志,趙 琳,張 金
    2012年第1期
    摘要
    引用本文
    摘 要:為了研究玻璃纖維增強復合材料(GFRP)約束素混凝土柱體的力學性能,進行了13組試件的軸心受壓試驗。主要考慮GFRP用量、倒角半徑對GFRP約束素混凝土柱體的力學性能的影響,通過試件的試驗過程和最終破壞形態可知,GFRP約束素混凝土柱體的強度都有一定程度的提高,延性增大,破壞過程與沒包裹GFRP試件相比緩慢;由于試件的棱角處存在應力集中現象,所以隨著倒角半徑的增加,GFRP約束的試件強度提高幅度逐漸增加,GFRP約束不同倒角半徑(0、20、35、50)素混凝土方柱試件的強度提高幅度遠不如圓形截面柱,較方形截面柱分別提高了6%、14%、16.9%、20.9%。 Abstract: To study the mechanical property of glass fiber reinforced polymer (GFRP) confined the concrete column, axial compressing tests of 13 specimen groups are conducted. The influences of GFRP dosage and chamfer radius on mechanical property of GFRP confined concrete column are mainly taken into account. Through the test process and the final failure form of specimen, the strength of GFRP confined concrete column has been improved, ductility has been amplified, failure process is slower than that of non-confined; as stress concentration exists at the edge of the test specimen, the strength of specimen confined by GFRP gradually increases with the growth of chamfer radius, strength improvement of GFRP confined concrete column with different chamfer radius(0,20,35,50)is less than that of round section column, and it can improve 6%, 14%, 16.9%, 20.9% respectively compared with square section column.
    玄武巖纖維增強混凝土斷裂能研究
    玄武巖纖維增強混凝土斷裂能研究
    • 孟雪樺,蔡迎春,金祖權
    2012年第1期
    摘要
    引用本文
    摘??要:通過帶切口梁的三點彎曲試驗,對玄武巖纖維摻量為0、1、3和6kg/m3的混凝土試件進行了荷載-變形測試,根據荷載-位移曲線擬合計算得到混凝土的斷裂能。研究表明,隨著玄武巖纖維摻量的增加,玄武巖纖維混凝土的斷裂能及其增益比均呈現增長趨勢,且增長速度是非線性的。Abstract:Throughthethreepointsbending(TPB)experimentwithnotchbeam,theloading-deformationtestoffiberreinforcedconcretewiththedosageof0,1,3and6kg/m3basaltfiberarecarriedout,andthefractureenergyofeachtypeofconcreteiscalculatedaccordingtotheloading-displacementcurve.Experimentalresultsindicatethatthefractureenergyandratioofgainsofbasaltfiberreinforcedconcreteraisewiththeincreaseoffiberdosage,andthevelocityofincreaseisnon-linear.
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