<table id="qrkot"><ruby id="qrkot"></ruby></table>
  1. <acronym id="qrkot"></acronym>
  2. <tr id="qrkot"><s id="qrkot"></s></tr>
  3. <table id="qrkot"><option id="qrkot"></option></table>
  4. <big id="qrkot"><ruby id="qrkot"></ruby></big>
  5. <track id="qrkot"></track>
    蘇州混凝土水泥制品研究院有限公司

    頭部文案

    發布時間:2020-01-06 00:00:00
    全國建材科技期刊
    全國中文核心期刊
    中國科技論文統計源期刊
    萬方數據-數字化期刊群入網期刊
    中國學術期刊(光盤版)全文收錄期刊
    華東地區優秀科技期刊
    江蘇省期刊方陣“雙效期刊”
    中國期刊網全文收錄期刊
    中國科技期刊數據庫全文收錄期刊

    全部文章

    第六期

    高性能再生骨料混凝土力學性能的研究
    高性能再生骨料混凝土力學性能的研究
    • 劉 立,趙順增,曹淑萍,吳 勇,賈福杰
    2011年第6期
    摘要
    引用本文
    摘 要:研究了不同水膠比、不同再生骨料替代率的高性能再生混凝土抗壓強度、抗折強度、劈裂抗拉強度、彈性模量等力學性能。結果顯示,再生混凝土的強度等級在C30~C60之間,抗折強度大于4MPa,劈裂抗拉強度大于2MPa,彈性模量在20~40GPa之間,力學性能滿足應用技術要求。再生骨料替代率在60%以內時,不影響混凝土各項強度指標;100%再生骨料替代率的混凝土根據水膠比不同,抗壓強度降低5%~25%;再生混凝土彈性模量隨再生骨料替代率的增加而逐步降低。 Abstract:The mechanical properties such as compressive strength, flexural strength, splitting tensile strength and elastic modulus of high-performance recycled aggregate concrete with different water-binder ratio and recycled aggregate replacement rate are studied. The results show that the strength of concrete is between C30~C60, flexural strength is more than 4MPa, splitting tensile strength is more than 2MPa and elastic modulus is between 20~40GPa, the mechanical properties can meet the application requirements. When the recycled aggregate replacement rate is less than 60%, there are no influences on the strength indexes of recycled concrete, while the concrete with 100% recycled aggregate replacement rate can reduce the compressive strength of 5%~25% according to the water-binder ratio, and the elastic modulus of recycled aggregate concrete reduces with the increase of recycled aggregate replacement rate.
    峨眉山玄武巖作水泥混合材的試驗研究
    峨眉山玄武巖作水泥混合材的試驗研究
    • 陳德玉,唐凱靖,劉來寶,譚克鋒
    2011年第6期
    摘要
    引用本文
    摘 要:在對峨眉山玄武巖的化學、礦物組成及物化性能進行全面分析的基礎上,以粉煤灰作類比,研究了兩種混合材(粉煤灰、峨眉山玄武巖)對普通硅酸鹽水泥物性指標和力學性能的影響。結果表明:等量取代水泥不高于30%的摻量時,峨眉山玄武巖較優質粉煤灰對普通水泥性能影響的效果更好。 Abstract: Based on the comprehensive analysis of the chemical, mineral composition, physical characteristics of the Emeishan basalt, compared with fly ash, the influences of two kinds of mixed materials (fly ash and Emeishan basalt) on the physical index and mechanical properties of ordinary Portland cement are researched.Experimental results show that when the proportion of mixed material is no more than 30%, the Emeishan basalt has better effects than high quality fly ash on the properties of Portland cement.
    SCLC70配合比設計及其性能研究
    SCLC70配合比設計及其性能研究
    • 范世豪
    2011年第6期
    摘要
    引用本文
    摘??要:考慮輕骨料吸水的影響,結合普通自密實混凝土固定砂石體積法與全計算法配制了密度小于1950kg/m3的SCLC70混凝土。通過V型漏斗、流動擴展度、L槽、U型槽、篩分、柱分層及表面沉降試驗對SCLC70自密實輕骨料混凝土的流動性、變形性、填充性和抗離析性進行了評價;同時分析了自密實輕骨料混凝土的抗壓強度、抗折強度、劈裂抗拉強度等力學性能參數,并與普通混凝土的基本力學性能進行了對比。Abstract:Consideringthewaterabsorptionoflightweightcoarseaggregate,SCLC70concrete,whosedensityislessthan1950kg/m3,arepreparedbyformulasforthewatercontentofoverallcalculationmethodandfixedvolumecontentofaggregatemethodcombiningwithnormalself-compactingconcrete.Thefluidity,deformability,fillingabilityandsegregationresistanceofSCLC70concreteareevaluatedbyusingtheV-funneltest,slumpflowtest,L-boxtest,U-boxtest,sievesegregationtest,columnsegregationtestandsurfacesettlementtest.TheparametersofprincipalmechanicalpropertiesofSCLC70,suchascompressivestrength,flexuralstrengthandsplittingtensilestrengthareanalyzed,andthebasicmechanicalpropertiesofSCLCarecomparedwiththenormalconcrete.
    再生混凝土基于抗碳化性能的配合比設計研究
    再生混凝土基于抗碳化性能的配合比設計研究
    • 何 霞1,楊韋生2,曹大富3
    2011年第6期
    摘要
    引用本文
    摘 要:將總功效系數法運用于評價大氣環境下再生高性能混凝土(HPRC)抗碳化性能的指標體系。該方法以混凝土結構抗碳化性能和抗滲透性作為長期性能的主要設計指標,用碳化深度和氯離子滲透系數進行考核;短期性能用混凝土的工作性與強度評價,工作性以坍落度與擴展度為考核指標,強度則根據結構受力狀態選擇抗壓強度或抗折強度為考核指標。將以上四個性能指標做歸一化處理后融為一個整體指標,即總功效系數,作為HPRC基于抗碳化性能的設計指標。在此基礎上,給出了配合比設計流程與實用設計表達式。 Abstract: Mixture ratio design method of High Performance Recycled Concrete(HPRC) based on anti-carbonization performance in atmospheric environment is proposed based on general efficiency coefficient method. The presented method considers workability tested by slump value, slump flow and concrete strength as short-period performances indices. At the same time, anti-carbonization performance and impermeability are taken as long-period performance indices, which are evaluated via carbonized depth and chlorine ion permeability coefficient. Farther, general efficiency coefficient that combined the above four indices into a total performance index is used to design and optimize the mixture ratio of HPRC. The design program and utility formula based on the general efficiency coefficient method are put forward.
    磺化多聚苯乙烯甲醛縮聚物減水劑的合成工藝研究
    磺化多聚苯乙烯甲醛縮聚物減水劑的合成工藝研究
    • 李 莽1,蔣曉曙2,張 彬3,周小俊4,陸 雷1
    2011年第6期
    摘要
    引用本文
    摘 要:采用油品行業主要成份為多聚苯乙烯的廢油為原料,研究合成新型減水劑的最佳工藝。討論了油酸比、油醛比、縮合酸度和縮合時間對水泥凈漿流動度的影響。結果表明:經正交實驗分析,油酸比在1:1.2,在150°C下磺化3h,降溫到90°C,加水降低縮合酸度到32%,滴加甲醛,控制油醛比在1:0.4,保溫縮合3h,加液堿中和到pH=8時制備的新型混凝土減水劑減水率最高,此時摻減水劑的水泥凈漿流動度最大。 Abstract:Using waste oil with the main component of lustrex as raw material, the optimal process of synthesizing new water reducer is studied. The influences of the ratio of oil and acid, the ratio of oil and aldehyde, the acidity of condensation and the time of condensation on the fluidity of cement paste are discussed. The results show that through the orthogonal test method, the water reducing ratio of the new water reducer is maximum when controlling the ratio of oil and acid with 1:1.2, sulphonating 3 hours at 150℃, then decreasing the temperature to 90℃, adding water to decrease the acidity of condensation to 32%, adding formalin by dropping, keeping the ratio of oil and aldehyde with 1:0.4, keeping the condensation time for 3 hours and adding liquid alkali to adjust pH=8. At that time, the fluidity of cement paste adding this new water reducer is largest.
    煤渣粉對高性能混凝土性能的影響
    煤渣粉對高性能混凝土性能的影響
    • 潘 攀1,歐陽東1,2,易承波2,寧 博1,魯劉磊2,吳亭亭1
    2011年第6期
    摘要
    引用本文
    摘 要:用煤渣粉作為礦物摻合料制備C50高性能混凝土,并與Ⅱ級粉煤灰復摻,研究煤渣粉摻量對水泥凝結時間、混凝土流動性、抗壓強度及耐久性的影響。結果表明:煤渣粉替代部分水泥可以提高高性能混凝土的抗壓強度和抗氯離子滲透性,對混凝土性能的影響優于Ⅱ級粉煤灰;煤渣粉摻量為20%時,混凝土抗壓強度達到最大值,為空白樣的120%;煤渣粉與粉煤灰復摻可以改善混凝土的流動性。結果顯示,煤渣粉可作為高性能混凝土的摻合料。 Abstract:C50 high performance concrete is prepared by using coal bottom ash as mineral admixture, and after mixing it with fly ash of Grade Ⅱ, the effects of the content of coal bottom ash on cement setting time, fluidity, compressive strength and durability of concrete are studied. The results show that coal bottom ash partially replacing cement can increase the compressive strength and resistance to chloride ion permeability of concrete, which is better than fly ash of Grade Ⅱ. With the content of 20% of coal bottom ash, the compressive strength of concrete can get the maximum value, which is 120% of the blank sample. Mixed coal bottom ash with fly ash could improve the fluidity of concrete. The experimental results indicate that coal bottom ash can be used as admixture for high performance concrete.
    大力發展異形鋼筋混凝土涵管
    大力發展異形鋼筋混凝土涵管
    • 曹生龍1,高俊永2
    2011年第6期
    摘要
    引用本文
    摘 要:近年來,在管道工程中應用的預制混凝土制品除了圓形管道制品外,異形鋼筋混凝土涵管迅速發展。本文重點介紹了橢圓涵管和卵形涵管的外形設計。 Abstract: Recently, besides circular pipe products of precasting concrete products, the spcial-shaped reinforced concrete culvert pipes are rapidly developed in the pipe engineering. The shape design of elliptic and oval culvert pipes is mainly introduced in this paper.
    電力隧道管片選型及預制技術
    電力隧道管片選型及預制技術
    • 秦中華
    2011年第6期
    摘要
    引用本文
    摘 要:現代城市的發展對電力的需求不斷加大,電力增容擴容建設越來越多,而在人口密集的城市住宅區、商業區架設高空高壓電纜變得越來越不可能,采用地下電纜隧道供應電力成為了電力建設的唯一選擇。盾構法電力隧道施工在國內尚處于試驗階段,設計施工仍在探索,未形成成熟的施工工藝。本文通過對盾構電力隧道管片的設計施工工藝探討,提供一種新的設計施工思路。 Abstract:The development of modern cities increasing demand for electricity, power capacity building expansion, more and more densely populated cities in the uptowns and commercial zones, it is becoming increasingly impossible to set up high-altitude and high-voltage cable in these zones. The supply of electricity by underground cable tunnel becomes the only option for power construction. Shield tunneling construction in the domestic power is still in the experimental stage, and it is still exploring the design and construction, and the construction process does not form a mature technology. Based on the discussion of the design and construction process of shield power tunnel segments, a new idea for design and construction is proposed.
    方形鋼管混凝土局部屈曲有限元分析
    方形鋼管混凝土局部屈曲有限元分析
    • 金雪峰1,袁丹鳳2,劉隆定1
    2011年第6期
    摘要
    引用本文
    摘 要:應用通用有限元程序,對方形空鋼管、方形鋼管混凝土兩種不同構件進行了特征值屈曲分析,研究了該兩種不同構件的屈曲模式及臨界屈曲應力,并與試驗研究成果及理論分析結果進行了比較,結果吻合良好。 Abstract: Finite element analysis (FEA) of eigenvalue method are used to study the buckling modes and the critical buckling stress of steel plates in the hollow box columns and the concrete-filled steel box columns. Comparison of theoretical analysis, FEA and experimental results are well anastomosed.
    超短超細鋼纖維對水泥砂漿性能的影響對比
    超短超細鋼纖維對水泥砂漿性能的影響對比
    • 石 飛1,應文宗1,彭 毅2,王龍飛2
    2011年第6期
    摘要
    引用本文
    摘 要:在砂漿中分別摻入11種不同比例的熔抽型超短超細鋼纖維,并與相同摻量的剪切型超短超細鋼纖維增強水泥砂漿進行了性能對比。結果表明,二種超短超細鋼纖維的摻入均可提高水泥漿體的抗折強度、抗壓強度和韌性,但熔抽型超短超細鋼纖維對水泥砂漿的增強增韌作用高于剪切型超短超細鋼纖維,并存在顯著的纖維增強幾何尺寸效應。 Abstract: Eleven kinds of different proportion of melting extracted extra-short and extra-fine steel fiber are added into mortar, and it is compared with the performances of shearing extra-short and extra-fine steel fiber reinforced mortar with the same dosage. The results show that two kinds of extra-short and extra-fine steel fiber can both improve flexural strength, compressive strength and toughness of cement pastes. The enhanced intensity and toughness of cement pastes with melting extracted extra-short and extra-fine steel fiber are better than the ones with shearing extra-short and extra-fine steel fiber, and the remarkable effects of fiber reinforcing geometric sizes of melting extracted extra-short and extra-fine steel fiber are existed.
    上一頁
    1
    2

    關注《混凝土與水泥制品》

    總訪問量 468,401   網站統計

    官方微信公眾號關閉
    蘇州混凝土水泥制品研究院有限公司

    關于我們    |    聯系我們    |    訂購雜志    |    回到頂部

    版權所有:中國混凝土與水泥制品網  蘇ICP備10086386號   網站建設:中企動力 蘇州

    版權所有:中國混凝土與水泥制品網

    蘇ICP備10086386號

    網站建設:中企動力 蘇州

    国产偷窥摄综合色区
      <table id="qrkot"><ruby id="qrkot"></ruby></table>
    1. <acronym id="qrkot"></acronym>
    2. <tr id="qrkot"><s id="qrkot"></s></tr>
    3. <table id="qrkot"><option id="qrkot"></option></table>
    4. <big id="qrkot"><ruby id="qrkot"></ruby></big>
    5. <track id="qrkot"></track>