<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

    碳酸化預處理鋼渣粉在混凝土中的研究與應用
    碳酸化預處理鋼渣粉在混凝土中的研究與應用
    • 王 瑾1,劉 健2,潘 紅1,吳昊澤1,徐東宇3
    2022年第5期
    摘要
    引用本文
    摘 ? 要:利用X射線衍射儀和SEM掃描電子顯微鏡觀察了碳酸化預處理前后鋼渣粉的礦物組成和微觀形貌,研究了碳酸化鋼渣粉等質量(5%、15%、25%)替代水泥和等質量替代礦渣粉(碳酸化鋼渣粉用量占膠凝材料總量的10%、20%)對混凝土工作性和力學性能的影響。結果表明:經過碳酸化預處理后,鋼渣粉中的MgO和f-CaO含量分別降低了72.86%和88.86%,并伴有尺寸約為1 μm的顆粒狀晶體產生;隨著碳酸化鋼渣粉替代水泥比例的增加,試件的抗壓強度先增大后減小,坍落度和凝結時間均逐漸增大;當水泥用量為膠凝材料總量的50%時,隨著碳酸化鋼渣粉替代礦渣粉比例的增加,試件的抗壓強度降低,初始坍落度減小,凝結時間延長;當水泥用量為膠凝材料總量的70%時,隨著碳酸化鋼渣粉替代礦渣粉比例的增加,試件的抗壓強度先增大后減小,初始坍落度減小,凝結時間延長。碳酸化鋼渣粉已成功應用于道路及地坪工程用混凝土的配合比設計中。 Abstract: The mineral composition and microstructure of steel slag powder before and after carbonation pretreatment were observed by X-ray diffractometer and SEM scanning electron microscope, and the effects of carbonated steel slag powder instead of cement(5%, 15%, 25%) and instead of slag powder(the amount of carbonated steel slag powder accounted for 10% and 20% of the cementitious material) on the workability and mechanical properties of concrete were studied. The results show that after carbonation pretreatment, the content of MgO and f-CaO in steel slag powder are reduced by 72.86% and 88.86% respectively, and granular crystals with a size of about 1 μm are produced. With the increase of the ratio of carbonated steel slag powder instead of cement, the compressive strength of the specimen first increases and then decreases, and the slump and setting time gradually increase. When the cement dosage is 50% of the total cementitious material, with the increase of the ratio of carbonated steel slag powder instead of slag powder, the compressive strength of the specimen decreases, the initial slump decreases, and the setting time increases. When the cement dosage is 70% of the total cementitious material, with the increase of the ratio of carbonated steel slag powder instead of slag powder, the compressive strength of the specimen first increases and then decreases, the initial slump decreases, and the setting time increases. Carbonated steel slag powder has been successfully used in the mix proportion design of concrete for road and floor engineering.
    王瑾,劉健,潘紅,等.碳酸化預處理鋼渣粉在混凝土中的研究與應用[J].混凝土與水泥制品,2022(5):90-94. WANG J,LIU J,PAN H,et al.Research and Application of Carbonated Pretreatment Steel Slag Powder in Concrete[J].China Concrete and Cement Products,2022(5):90-94.
    凍融和干濕循環對廢玻璃混凝土耐久性能的影響研究
    凍融和干濕循環對廢玻璃混凝土耐久性能的影響研究
    • 張 楚a,王鳳池b,馬一方a
    2022年第5期
    摘要
    引用本文
    摘 ? 要:研究了凍融循環、干濕循環、凍融循環+干濕循環、凍融-干濕耦合循環對不同替代率廢玻璃骨料混凝土耐久性能的影響。結果表明:與未凍融、未干濕試件相比,經歷凍融循環、凍融循環+干濕循環、凍融-干濕耦合循環試件的抗壓強度降低、質量損失率增大,而經歷干濕循環試件的抗壓強度提高、質量損失率減??;不同損傷機制對廢玻璃混凝土耐久性能的影響程度由小到大順序為干濕循環<凍融循環+干濕循環<凍融循環<凍融-干濕耦合循環。 Abstract: The effects of freeze-thaw cycle, dry-wet cycle, freeze-thaw cycle + dry-wet cycle and freeze-thaw and dry-wet coupling cycle on the durability of concrete with different waste glass aggregate replacement rates were studied. The results show that compared with the no freeze-thaw and no dry-wet specimen, the compressive strength of the specimen subjected to freeze-thaw cycle, freeze-thaw cycle + dry-wet cycle, and freeze-thaw and dry-wet coupling cycle decreases and the mass loss rate increases, while the compressive strength of the specimen subjected to dry-wet cycle increases and the mass loss rate decreases. The degree of the influence of different damage mechanisms on the durability of waste glass concrete is in the order of dry-wet cycle < freeze-thaw cycle + dry-wet cycle < freeze-thaw cycle < freeze-thaw and dry-wet coupling cycle.
    張楚,王鳳池,馬一方.凍融和干濕循環對廢玻璃混凝土耐久性能的影響研究[J].混凝土與水泥制品,2022(5):95-99,104. ZHANG C,WANG F C,MA Y F.Study on the Influence of Freeze-thaw and Dry-wet Cycle on the Durability of Waste Glass Concrete[J].China Concrete and Cement Products,2022(5):95-99,104.
    電弧爐粉塵在水泥混凝土領域的研究與應用進展
    電弧爐粉塵在水泥混凝土領域的研究與應用進展
    • 岳漢威,王 清
    2022年第5期
    摘要
    引用本文
    摘 ? 要:電弧爐粉塵(EAFD)是電弧爐煉鋼過程中產生的固體廢物,采用水泥對EAFD進行吸收和消耗是理想的處理辦法之一。介紹了EAFD的形成過程和化學組成,分析了EAFD在水泥混凝土中的作用機理,綜述了EAFD在水泥混凝土領域的研究與應用進展,提出了目前研究中存在的問題,展望了水泥混凝土用EAFD未來的研究方向。 Abstract: Electric arc furnace dust (EAFD) is a solid waste generated in the electric arc furnace steelmaking process. Absorption and consumption of EAFD by cement is one of the alternative treatment methods. The formation process and chemical composition of EAFD are introduced. The mechanism of action of EAFD in cement concrete is analyzed. The research and application progress of EAFD in the field of cement concrete are reviewed. The problems existing in the current research are put forward. The future research direction of EAFD for cement concrete is prospected.
    岳漢威,王清.電弧爐粉塵在水泥混凝土領域的研究與應用進展[J].混凝土與水泥制品,2022(5):100-104. YUE H W,WANG Q.Research and Application Progress of Electric Arc Furnace Dust in the Field of Cement Concrete[J].China Concrete and Cement Products,2022(5):100-104.
    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>