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    蘇州混凝土水泥制品研究院有限公司

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    第六期

    硅酸鈣板生產線專用升降平臺的設計與應用
    硅酸鈣板生產線專用升降平臺的設計與應用
    • 劉紹莊
    2010年第6期
    摘要
    引用本文
    摘 要:介紹了硅酸鈣板生產線專用升降平臺的設計計算、結構尺寸設計對其驅動力的影響,分析了設計步驟、設計要點與應用情況。 Abstract:The design calculation of special lifting platform for calcium silicate board production line and the influences of structural dimension design on its drive force are introduced. Design steps, design key points and application situation are analyzed.
    復合外墻板結構的優化設計
    復合外墻板結構的優化設計
    • 張承志1,王愛勤2
    2010年第6期
    摘要
    引用本文
    摘 要:提出了一種新的板材結構優化設計方法,并運用這一方法優化了復合外墻板的結構參數,分析了面層材料和芯層材料的性能對優化結果的影響。 Abstract: An optimized design method of new slab structure is offered. By applying this method, the structural parameters of composite exterior wall slab are optimized, and the influence of properties of the surface layer and core layer materials on the optimized result is analyzed.
    局部區段銹蝕的鋼筋混凝土梁抗剪承載力試驗研究
    局部區段銹蝕的鋼筋混凝土梁抗剪承載力試驗研究
    • 李 冰1,高向華1,王小惠1,史榮飛2
    2010年第6期
    摘要
    引用本文
    摘 要:根據實際工程構件中鋼筋銹蝕的不均勻性,設計了14根鋼筋混凝土梁,并進行了試驗梁在兩對稱集中荷載作用下的抗剪性能試驗。通過對不同特征試驗梁的裂縫分布、破壞模式和極限承載力的對比分析,研究了一側剪跨內不同長度局部區段內不同的銹蝕特征對梁受力性能和承載力的影響。結果表明,一側剪跨局部區段無粘結梁、銹蝕梁的力學性能與正常梁有很大的區別:因局部區段內的完全無粘結,局部區段無粘結梁在無粘結一側的剪跨區內無斜裂縫,梁可能發生粘結完好一側的剪切破壞,也可能發生彎曲破壞。對局部區段銹蝕梁,雖然所有的試件均因剪跨內的銹蝕區段而破壞,但隨著銹蝕區段長度的增長和其內鋼筋銹蝕率的增加,梁呈現出較脆的破壞模式和較低的極限承載力。 Abstract: According to inhomogeneity of component steel corrosion in practical engineering, 14 RC beams are designed, and under the roles of symmetrical concentrated loading, shear properties tests of testing beams are conducted. Through crack distinctions, contrastive analysis of damage modes and limited capacity of different characteristic testing beams, the influences of different corrosion characteristic of the partial section with different lengths in one side shear span on beams mechanical properties and bearing capacity are researched. The results indicate that mechanical properties beteween unbonded or corroded beams of the partial section in one side shear span and normal beams have a lot of differences: because of completely unbonded in partial section, unbonded beams of the partial section in unbonded side shear span have no diagonal cracks, therefore, beams may happen shear damage in good bonded side or will happen bending damage. For the corroded beams in partial section, all samples are destroyed because of corrosion section in shear span, however, by the length of corrosion section increasing and steel corrosion rate inside increasing, fragile damage modes and low limited capacity of beams are presented.
    玄武巖纖維增強機場道面混凝土力學性能試驗研究
    玄武巖纖維增強機場道面混凝土力學性能試驗研究
    • 李文蕾,吳永根,馬世寧
    2010年第6期
    摘要
    引用本文
    摘??要:對比分析了兩種規格的玄武巖纖維分別以0.05%、0.10%、0.15%的體積摻量對機場道面混凝土抗折、抗壓強度性能的影響規律。試驗結果表明,玄武巖纖維對機場道面混凝土有較好的力學增強性能,28d抗折強度提高6.09%~19.80%,對抗壓強度影響不明顯,并且長度40mm、直徑40μm的短切玄武巖纖維較長度20mm、直徑20μm有更好的增強效果,可以在機場混凝土道面施工中使用,其最佳體積摻量為0.10%。Abstract:Theeffectsoftwokindsofbasaltfiberwith0.05%,0.10%,0.15%volumedosageontheflexuralstrengthandcompressivestrengthofairportpavementconcreteareanalyzedandcompared.Testresultsindicatethatbasaltfiberforairportpavementconcretehasgoodenhancingmechanicalproperty.Byincreasing6.09%~19.80%flexuralstrengthin28d,basaltfiberdonothaveobviouseffectsoncompressivestrength.Short-cutbasaltfiberwithlength40mm,diameter40μmhasbettereffectsonmechanicalpropertiesthanbasaltfiberwithlength20mm,diameter20μm,whichcanbeusedinairportconcretepavement,anditsoptimumvolumedosageis0.10%.
    纖維增強水泥基復合材料界面性能的研究進展
    纖維增強水泥基復合材料界面性能的研究進展
    • 曹明莉,劉 晶,位建強
    2010年第6期
    摘要
    引用本文
    摘 要:基于界面在復合材料中的重要性,介紹了纖維增強水泥基復合材料中,纖維與水泥基的界面性能以及目前常用的界面性能的測試手段;同時,對目前常用的纖維(鋼纖維、聚丙烯纖維)及新型無機礦物微纖維CaCO3晶須,與水泥基材料的界面的組成與結構的改善辦法進行了總結。 Abstract: Based on the importance of interface in composite materials,the interfacial properties between fiber and cement-based materials and usual testing methods are introduced in carbon fiber reinforced cement composites. At the same time, composition of interface in cementitious materials and improving measures of structures are summarized,which are formed by fibers(steel fiber or polypropylene fiber) or new inorganic mineral microfiber--CaCO3 whiskers mixed.
    鋼纖維混凝土彈塑性損傷本構模型試驗研究
    鋼纖維混凝土彈塑性損傷本構模型試驗研究
    • 梅世強,姜 袁,郝景宏,楊克榮,馬 莉
    2010年第6期
    摘要
    引用本文
    摘??要:對鋼纖維含量為0和3%的混凝土進行了應變速率為10-3的等應變增量重復加卸載試驗。結果表明,在相同應變水平時,鋼纖維混凝土的累積塑性變形低于普通混凝土。鋼纖維混凝土的剛度變化幅度較普通混凝土小,約為0.86倍初始彈性模量,而普通混凝土的約為1.1倍初始彈性模量。依據剛度退化規律,并考慮損傷臨界值的影響,得到了關于應變的損傷變量表達式;依據試驗結果得到了單軸受壓狀態下的混凝土全量彈塑性損傷全量本構模型。Abstract:Equalstrainincrementcyclicloadingandunloadingtestswithstrainrateat10-3werecarriedoutforsteelfiberreinforcedconcrete(SFRC)with0and3%respectively.Theresultsshowthat,atthesamestrainlevel,accumulativeplasticdeformationofSFRCislessthanplainconcrete.TherangeofstiffnessvariationofSFRCislessthanplainconcrete,whichis0.86timesoftheinitialelasticmodulusforSFRCand1.1timesforplainconcrete.Basedonstiffnessdegradationrules,andconsideringtheeffectondamagecriticalvalue,theformulasofdamagevariablesforstrainareobtained.Throughthetestingresults,constitutivemodelofuniaxialcompressiveconcretewiththetotalelastic-plasticdamageisobtained.
    聚酯纖維和碳纖維硫鋁酸鹽水泥混凝土力學性能的研究
    聚酯纖維和碳纖維硫鋁酸鹽水泥混凝土力學性能的研究
    • 王 偉,王文奎,徐兆輝,王 拓
    2010年第6期
    摘要
    引用本文
    摘 要:研究了聚酯纖維和碳纖維硫鋁酸鹽水泥混凝土的力學性能。結果表明,在90d齡期時,聚酯纖維和碳纖維硫鋁酸鹽水泥混凝土的抗壓強度分別達到了58.9MPa、52.4MPa,比同齡期素混凝土試樣分別提高了25.6% 和12.0%;而劈拉強度分別達到了5.77MPa和5.11MPa,比同齡期素混凝土試樣分別提高了41.1% 和24.9%。碳纖維和聚酯纖維對硫鋁酸鹽水泥混凝土均有明顯的約束裂縫擴展的能力,表現為在28d齡期時,碳纖維混凝土的斷裂能達到113.4kJ,比基準混凝土提高了28.1%,而聚酯纖維混凝土的斷裂能則達到了139.8kJ,比基準混凝土提高了58.0%。 Abstract: The mechanical properties of polyester fiber and carbon fiber reinforced sulphoaluminate cement (SAC) concrete are researched. The results indicate that the compressive strengths of polyester fiber and carbon fiber reinforced SAC concrete are as high as 58.9MPa and 52.4MPa respectively at 90 days age, which are increased by 25.6% and 12.0% respectively, compared with plain SAC concrete at the same age. The splitting tensile strengths of polyester fiber and carbon fiber reinforced SAC concrete are as high as 5.77MPa and 5.11MPa respectively at 90 days age, which are increased by 41.1% and 24.9% respectively, compared with plain SAC concrete at the same age. The function of carbon fiber and polyester fiber to limit the development of cracks propagation for SAC concrete is obvious, and the fracture energy of carbon fiber reinforced SAC concrete is as high as 113.4kJ at 80 days age, which is increased by 28.1% compared with plain SAC concrete. The fracture energy of polyester fiber reinforced SAC concrete is as high as 139.8kJ at the same age, which is increased by 58.0% compared with plain SAC concrete.
    不同幾何尺寸混雜纖維混凝土物理模型的研究
    不同幾何尺寸混雜纖維混凝土物理模型的研究
    • 王成啟
    2010年第6期
    摘要
    引用本文
    摘 要:由混凝土裂縫的擴展過程,建立了不同幾何尺寸混雜纖維混凝土增強作用的物理模型,并用試驗結果進行了驗證。結果表明,模型與試驗結果是一致的,可為幾何混雜纖維混凝土的材料設計提供一定的理論基礎。 Abstract: Because of the extension process of concrete cracks, physical models of enhancing role of hybrid fibers reinforced concrete with different sizes are established, and the models are verified by the testing results. The results show that the values of models and testing results are the same, which provide the certain theory of material design of hybrid fibers reinforced concrete.
    管樁常壓蒸汽養護溫度變化測量試驗
    管樁常壓蒸汽養護溫度變化測量試驗
    • 李成龍
    2010年第6期
    摘要
    引用本文
    摘 要:根據試驗測量結果,闡述了管樁生產過程中常壓蒸汽養護的溫度變化規律,管樁混凝土與環境溫度的變化關系,使養護溫度能夠更好的控制在要求范圍內,合理地調整工藝制度。 Abstract:According to the results of experimental measures, temperature changing rules of normal pressure steam curing during the production process of cylinder piles are introduced. The changing relationship between concrete cylinder piles and environmental temperature lets the curing temperature can be better controlled in required range and the process system can be reasonably coordinated.
    預應力混凝土管樁生產安全事故分析
    預應力混凝土管樁生產安全事故分析
    • 蔣元海1,潘加根2
    2010年第6期
    摘要
    引用本文
    摘 要:通過對我國現階段不同生產規模、不同建廠時間、不同地區分布的18家管樁生產企業近年來發生的381起安全事故統計,提出了目前我國管樁企業生產中安全事故發生的各個工序存在的隱患程度,分析了事故產生的4個方面的主要原因。 Abstract:Through the 381 accidents happened in recent years in 18 piles producing enterprises with different production scale, manufacturing time and area distribution at the present stage, the potential hazards are brought out for each procedure of occurring accidents in piles producing enterprises, and the main reasons of occurring accidents are analyzed in four aspects.
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