<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

    節 能 與 環 保

    河道疏浚底泥制備泡沫混凝土試驗研究
    河道疏浚底泥制備泡沫混凝土試驗研究
    • 楊小云1,趙 玲1,2;陳 兵3,仁 增1,張 穎2,李德平2,申哲民1
    2020年1期
    摘要
    引用本文
    摘要:利用河道疏浚底泥制備泡沫混凝土,研究了石灰、粉煤灰和微硅粉部分代替水泥,以及外摻偏硅酸鈉、水玻璃和生物炭對所制備的底泥基泡沫混凝土抗壓強度、導熱系數和吸水耐水性能的影響。結果表明,微硅粉的加入優化了孔隙分布,可誘發火山灰反應,改善底泥基泡沫混凝土的綜合性能;外摻2%的大麥草生物炭(500 ℃)可使底泥基泡沫混凝土的抗壓強度提高14.2%,導熱系數降低4.78%;添加石灰、粉煤灰和偏硅酸鈉降低了泡沫混凝土的綜合性能;水玻璃對泡沫混凝土的性能影響不大。
    Abstract: Dredged sediment was used to produce foamed concrete, and the effects of partial replacement of cement by lime, fly ash and silica fume, and doping sodium metasilicate, water glass and biochar on the compressive strength, thermal conductivity and water absorption of the foamed concrete were studied. The results show that the addition of silica fume optimizes the pore distribution, induce the pozzolanic reaction, which can improve the comprehensive properties of the sediment foamed concrete. Dosage of 2% barley grass biochar (500 ℃) can increase the compressive strength of the sediment foamed concrete by 14.2% and reduce the thermal conductivity by 4.78%. The addition of lime, fly ash and sodium metasilicate reduce the comprehensive properties of foam concrete, and water glass has little effect on the properties of foam concrete.
    楊小云,趙玲,陳兵,等.河道疏浚底泥制備泡沫混凝土試驗研究[J].混凝土與水泥制品,2020(1):86-91.
    YANG X Y,ZHAO L,CHEN B,et al.Experiment Study on Preparation of Foamed Concrete with Dredged River Sediment[J].China Concrete and Cement Products,2020(1):86-91.
    鐵尾礦砂混凝土與HRB500鋼筋錨固性能試驗研究
    鐵尾礦砂混凝土與HRB500鋼筋錨固性能試驗研究
    • 康洪震1,2,王 宇2,李 強1,3
    2020年1期
    摘要
    引用本文
    摘要:為研究HRB500高強鋼筋在鐵尾礦砂混凝土中的錨固性能,通過兩類共27個不同錨固類型試件的直接拉拔試驗方法,分析了不同錨固形式鋼筋的受力特征,研究了鐵尾礦砂混凝土強度、保護層厚度和錨固長度等因素對錨固性能的影響。結果表明,隨著混凝土強度、保護層厚度和錨固長度的增加,錨固強度逐漸增大,且呈一定的線性關系,并在保護層厚度和錨固長度方面存在限值。同時,與GB 50010—2010《混凝土結構設計規范》中的錨固長度進行對比,提出了HRB500鋼筋在鐵尾礦砂混凝土中錨固長度設計建議。
    Abstract: In order to study the anchorage performance of HRB500 high-strength steel bar in iron tailings sand concrete, the mechanical characteristics of different anchorage forms of steel bar were analyzed by direct pull-out test of 27 specimens of different anchorage types, and the effects of strength of iron tailings sand concrete, thickness of protective layer and anchorage length on anchorage performance were studied. The results show that with the increase of concrete strength, protective layer thickness and anchorage length, anchorage strength increases gradually and has a certain linear relationship, and there are limits in protective layer thickness and anchorage length. At the same time, compared with the anchorage length in GB 50010—2010 The Code Design of Concrete Structures, the design proposal of anchorage length of HRB500 steel bar in iron tailings sand concrete is put forward.
    康洪震,王宇,李強.鐵尾礦砂混凝土與HRB500鋼筋錨固性能試驗研究[J].混凝土與水泥制品,2020(1):92-96. KANG H Z,WANG Y,LI Q.Experimental Study on Anchorage Performance of Iron Tailings Sand Concrete and HRB500 Steel Bar[J].China Concrete and Cement Products,2020(1):92-96.
    復合礦粉再生骨料CFG樁樁身材料強度試驗研究
    復合礦粉再生骨料CFG樁樁身材料強度試驗研究
    • 陳 輝1,高 強2,陳 甦1,孫 飛2,錢林根1
    2020年1期
    摘要
    引用本文
    摘要:研究了復合礦粉(礦粉+粉煤灰)再生骨料CFG樁樁身材料強度隨礦粉替代粉煤灰百分比和養護齡期的變化規律;通過正交試驗設計,分析了復合礦粉再生骨料CFG樁樁身材料強度的影響因素,并對正交試驗結果進行數值擬合,提出了強度預測公式。研究結果表明,復合礦粉再生骨料CFG樁樁身材料強度隨礦粉替代粉煤灰百分比的增加而增加,但當礦粉替代粉煤灰百分比大于50%時,強度增長速率開始減??;復合礦粉再生骨料樁樁身材料強度隨齡期增加而增大;影響復合礦粉CFG樁樁身材料強度的因素順序依次為:齡期>礦粉取代粉煤灰>礦粉取代水泥,最優組合為礦粉取代粉煤灰100%、礦粉取代水泥0、齡期90 d;樁身材料強度預測公式精度較高。
    Abstract: Through mixture ratio test of CFG pile with composite mineral powder (mineral powder + fly ash) recycled aggregate, the change rules of material strength under different replacement percentage of fly ash with mineral powder and various curing age were studied, and the influencing factors of material strength of CFG pile with composite mineral powder recycled aggregate was analyzed by orthogonal test, and the material strength prediction formula was proposed by mathematical fitting. The results show that the strength of composite mineral powder recycled aggregate pile increases with the increase of the percentage of fly ash replaced by mineral powder, but when the replacement percentage is greater than 50%, the growth rate of strength begins to decrease. The strength of composite mineral powder recycled aggregate pile increases with the increase of curing age. The importance ranking of factors affecting the strength of CFG pile material is: curing age > replacement percentage of fly ash with mineral powder > replacement percentage of cement with mineral powder, and the optimal combination is 100% fly ash replaced by mineral powder, 0% cement replaced by mineral powder, and 90 days curing age. The prediction formula of material strength has high accuracy
    陳輝,高強,陳甦,等.復合礦粉再生骨料CFG樁樁身材料強度試驗研究[J].混凝土與水泥制品,2020(1):97-100.
    CHEN H,GAO Q,CHEN S,et al.Experimental Study on the Strength of Materials of Composite Mineral Powder Recycled Aggregate CFG Piles[J].China Concrete and Cement Products,2020(1):97-100.
    上一頁
    1

    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>