<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

    第五期

    再生微粉對超高性能混凝土力學性能和微觀結構的影響
    再生微粉對超高性能混凝土力學性能和微觀結構的影響
    • 何智海1,2,張夢圓1,詹培敏3,楊一凡1,蘭 波1
    2021年第5期
    摘要
    引用本文
    摘 ? 要:研究了兩種類型的再生微粉(混凝土粉和磚粉)取代部分硅灰對超高性能混凝土(Ultra-high Performance Concrete,UHPC)力學性能和微觀結構的影響。結果表明:混凝土粉的摻入降低了UHPC的力學性能,而磚粉取代15%硅灰時,UHPC的28 d抗壓強度和抗折強度分別達到了130 MPa和24 MPa,略高于基準組;相較于混凝土粉,在UHPC中摻入15%的磚粉能夠優化混凝土的內部結構;磚粉良好的微集料填充作用和火山灰效應增強了界面過渡區的黏結性能和水化產物的納觀力學性能,從而改善UHPC的微觀結構。 Abstract: The effect of replacing part of silica fume with two kinds of hybrid recycled powder (concrete powder and brick powder) on the mechanical properties and microstructure of ultra-high performance concrete (UHPC) was studied. The results show that the addition of concrete powder reduces the mechanical properties of UHPC, while the 28 d compressive strength and flexural strength of UHPC reach 130 MPa and 24 MPa respectively when 15% silica fume is replaced by brick powder, which are slightly higher than those of the reference group. Compared with concrete powder, mixing 15% brick powder in UHPC can optimize the internal structure of concrete. The good micro-aggregate filling effect and pozzolanic properties of brick powder enhance the cohesiveness of the interface transition zone and the nanomechanical properties of the hydration products, thus improving the microstructure of UHPC.
    何智海,張夢圓,詹培敏,等.再生微粉對超高性能混凝土力學性能和微觀結構的影響[J].混凝土與水泥制品,2021(5):85-90. HE Z H,ZHANG M Y,ZHAN P M,et al.Effect of Hybrid Recycled Powder on Mechanical Properties and Microstructure of Ultra-high Performance Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):85-90.
    利用電解錳渣制備活性粉末混凝土的研究
    利用電解錳渣制備活性粉末混凝土的研究
    • 季軍榮1,武雙磊2,陳 宇2,周 洲1,陳胡星2
    2021年第5期
    摘要
    引用本文
    摘 ? 要:研究了電解錳渣取代石英粉或礦渣微粉對活性粉末混凝土(RPC)強度、收縮率和重金屬浸出毒性的影響。結果表明:電解錳渣部分取代石英粉或礦渣微粉,RPC的抗壓強度總體上有所提高,而抗折強度稍有下降;干縮率與濕脹率均降低;重金屬浸出濃度均低于Ⅴ類地表水限值。 Abstract: The effects of electrolytic manganese residue instead of quartz powder or slag powder on the strength, shrinkage and heavy metal leaching toxicity of reactive powder concrete (RPC) were studied. The results show that using electrolytic manganese residue to partially replace quartz powder or slag powder, the compressive strength of RPC is generally improved, while the flexural strength is slightly reduced, the dry shrinkage and wet swelling rate of RPC are both reduced, and the leaching concentration of heavy metals is below Class V surface water limit.
    季軍榮,武雙磊,陳宇,等.利用電解錳渣制備活性粉末混凝土的研究[J].混凝土與水泥制品,2021(5):91-94,99. JI J R,WU S L,CHEN Y,et al.Study on the Preparation of Reactive Powder Concrete with Electrolytic Manganese Residue[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):91-94,99.
    不同材料增強處理再生骨料對混凝土抗壓強度的影響
    不同材料增強處理再生骨料對混凝土抗壓強度的影響
    • 孫柯華1,沈 陽2,王 偉3,羅 鋒3,楊雅詩4,韋建斌5,章樂遠3,馮興國3, 胡 坤3,徐逸文3
    2021年第5期
    摘要
    引用本文
    摘 ? 要:研究了水泥漿、偏高嶺土地聚物、摻粉煤灰偏高嶺土地聚物、水泥漿-偏高嶺土地聚物增強處理再生骨料對混凝土抗壓強度的影響。結果表明:四種增強材料處理的再生骨料對混凝土抗壓強度的影響順序大小為水泥漿-偏高嶺土地聚物>偏高嶺土地聚物>水泥漿>摻粉煤灰偏高嶺土地聚物。 Abstract: The effects of cement slurry, metakaolin geopolymer, metakaolin geopolymer with fly ash and cement slurry-metakaolin geopolymer on compressive strength of concrete were studied. The results show that the influence order of recycled aggregate reinforced by four materials on compressive strength of concrete is cement slurry-metakaolin geopolymer > metakaolin geopolymer > cement slurry > metakaolin geopolymer with fly ash.
    孫柯華,沈陽,王偉,等.不同材料增強處理再生骨料對混凝土抗壓強度的影響[J].混凝土與水泥制品,2021(5):95-99. SUN K H,SHEN Y,WANG W,et al.Effects of Recycled Aggregate Reinforced by Different Materials on Compressive Strength of Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):95-99.
    原狀粉煤灰-鐵尾礦泡沫混凝土的性能研究
    原狀粉煤灰-鐵尾礦泡沫混凝土的性能研究
    • 孫 婧1,2,3,王 宏1,陳 靜4,安艷玲1,蘭建偉1,劉宏波1,3
    2021年第5期
    摘要
    引用本文
    摘 ? 要:采用Design-Expert軟件研究了原狀粉煤灰及鐵尾礦砂對泡沫混凝土干密度、吸水率及抗壓強度的影響,并觀察了泡沫混凝土斷面的細觀結構。結果表明:原狀粉煤灰摻量的增加會使泡沫混凝土的干密度和吸水率降低,當原狀粉煤灰摻量占膠凝材料的40%時,泡沫混凝土的抗壓強度最高;固定粉煤灰摻量為40%,鐵尾礦砂摻量在0~50%范圍內增加會使泡沫混凝土的干密度和抗壓強度增加,吸水率降低;當原狀粉煤灰摻量<40%時,原狀粉煤灰摻量越多,泡沫混凝土內部的氣泡越穩定;鐵尾礦砂摻量的增加可使泡沫混凝土的孔徑減小,密實度增加。 Abstract: The influence of original fly ash and iron tailings on dry density, water absorption and compressive strength of foam concrete was studied by Design-Expert software, and the microstructure of foam concrete was observed. The results show that the dry density and water absorption rate of foam concrete decrease with the increase of raw fly ash content, and when the original fly ash content is 40%, the compressive strength of foam concrete is the highest. When the fixed fly ash content is 40%, the increase of iron tailings content in the range of 0~50% can increase the dry density and compressive strength of foam concrete, but reduce the water absorption. When the original fly ash content is less than 40%, the more the raw fly ash content, the more stable the bubbles inside the foam concrete. The increase of the iron tailings content can reduce the pore size of foam concrete and increase the density.
    孫婧,王宏,陳靜,等.原狀粉煤灰-鐵尾礦泡沫混凝土的性能研究[J].混凝土與水泥制品,2021(5):100-104. SUN J,WANG H,CHEN J,et al.Study on Properties of Original Fly Ash-iron Tailings Foam Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):100-104.
    SFRC/SCC鋼筋復合梁受彎性能試驗研究
    SFRC/SCC鋼筋復合梁受彎性能試驗研究
    • 蘇 駿1,2,錢維民1,柯 驕1
    2021年第5期
    摘要
    引用本文
    摘 ? 要:設計了一批受拉區為SFRC、受壓區為SCC的鋼筋復合梁,分析了縱筋配筋率、SFRC替換層鋼纖維體積摻量以及替換層高度對復合梁在四點彎曲荷載作用下的承載力、撓度以及裂縫形態的影響,并與普通混凝土梁進行了對比。通過理論分析計算得出了SFRC/SCC復合梁的承載力表達式,并將理論計算結果與試驗數據進行了對比分析,以驗證表達式的合理性。結果表明:配筋率是提升復合梁承載力的首要因素,1.32%配筋率相對于0.79%配筋率的極限承載力最大可提升24.1%;鋼纖維替換層對復合梁的承載力提升并不明顯,但對于復合梁的撓度與裂縫寬度控制有明顯作用,將替換層高度由50 mm提升至150 mm時,復合梁的撓度和主裂縫寬度最大分別降低了9.2%和77.81%。 Abstract: A batch of reinforced composite beams with SFRC tension zone and SCC compression zone were designed, and the effects longitudinal reinforcement ratio, SFRC replacement layer steel fiber volume content and replacement layer height on the bearing capacity, deflection and crack shape of composite beams under the four-point bending load were analyzed, and compared with ordinary concrete beams. Through theoretical analysis and calculation, the expression of the bearing capacity of SFRC/SCC composite beams was obtained, and the theoretical calculation results were compared with the experimental datas to verify the rationality of the expression. The results show that the reinforcement ratio is the primary factor to improve the bearing capacity of composite beams. Compared with the reinforcement ratio of 0.79%, the ultimate bearing capacity can be increased by 24.1% at the maximum reinforcement ratio of 1.32%. The steel fiber replacement layer does not significantly improve the bearing capacity of composite beams, but it has an obvious effect on the deflection and crack width control of composite beams. When the replacement layer height is increased from 50 mm to 150 mm, the deflection and main crack width of composite beams are reduced by 9.2% and 77.81% respectively.
    蘇駿,錢維民,柯驕.SFRC/SCC鋼筋復合梁受彎性能試驗研究[J].混凝土與水泥制品,2021(5):60 -64,70. SU J,QIAN W M,KE J.Experimental Study on the Flexural Performance of SFRC/SCC Reinforced Composite Beams[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):60 -64,70.
    無腹筋混凝土受剪梁聲發射灰色理論預測模型
    無腹筋混凝土受剪梁聲發射灰色理論預測模型
    • 李向陽,秦擁軍,呂旭濱
    2021年第5期
    摘要
    引用本文
    摘 ? 要:建立了無腹筋混凝土梁受剪破壞中聲發射現象的聲發射灰色預測模型,并采用修正方法對模型進行了修正。結果表明:采用兩次修正、調整系數a和一次修正三種方法引入修正系數對GM(1,1)模型的預測精度有較大提高,對聲發射(AE)累計事件數的數值預測效果有較好的擬合性,AE累計事件數變化趨勢的預測結果與試驗結果之間的差異較小,可以實現對無腹筋混凝土梁受剪破壞的判別與預測。 Abstract: The grey theory prediction model of acoustic emission in shear failure of concrete beams without abdominal reinforcement was established, and the model was modified by the modified method. The results show that the prediction accuracy of GM (1,1) model is greatly improved by using the three methods of two corrections, adjustment coefficient a and one correction to introduce correction coefficients, and the acoustic emission(AE) accumulative total number of the numerical prediction results have good fitting, and the difference between the predicted results and experimental results of AE accumulative events ?change trend is low, which can realize the discrimination and prediction of the shear failure of concrete beams without abdominal reinforcement.
    李向陽,秦擁軍,呂旭濱.無腹筋混凝土受剪梁聲發射灰色理論預測模型[J].混凝土與水泥制品,2021(5):65-70. LI X Y,QIN Y J,LYU X B.Grey Theory Prediction Model of Acoustic Emission of Concrete Beam Without Abdominal Reinforcement[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):65-70.
    預制高強硅酸鹽墻板力學性能試驗研究
    預制高強硅酸鹽墻板力學性能試驗研究
    • 謝國慶,任 虎,羅 雙,付汝賓,孔德文
    2021年第5期
    摘要
    引用本文
    摘 ? 要:研究了高強硅酸鹽墻板的抗壓性能及破壞形態,提出了標準試塊受壓應力-應變本構方程,通過ABAQUS有限元軟件進行了數值模擬,并與試驗結果進行了對比。結果表明:標準試塊受壓應力-應變全過程曲線的形狀和普通混凝土相似,峰值應力前曲線接近直線,達到峰值應力后,應力迅速跌落;可采用二段式曲線擬合高強硅酸鹽墻板標準試塊的單軸受壓應力-應變關系,得出其本構模型;試件的破壞形態為脆性破壞,延性較差,抗壓試件破壞時兩板面出現豎向裂縫,兩孔間肋出現豎向裂縫和斜裂縫;試件承載力較高,滿足現有規范對建筑用隔墻條板的強度要求。 Abstract: The compressive properties and failure mode of high-strength silicate wallboards were studied, and the stress-strain constitutive equation of the standard test block was put forward. The numerical simulation was carried out by ABAQUS finite element software, and the results were compared with the experimental results. The result shows that the shape of the compressive stress-strain entire process curve of the standard test block is similar to that of ordinary concrete, and it increases approximately linearly before reaching the peak stress, and drops rapidly after reaching the peak stress. The two-section curve can be used to fit the uniaxial compressive stress-strain relationship of the standard test block of the wallboard, and its constitutive model is given. The failure mode of the specimen is brittle failure with poor ductility, and when the compressive specimen is damaged, vertical cracks appear on the two plates, and vertical cracks and oblique cracks appear on the ribs between the two hole ribs. The bearing capacity of the specimen is high, which can meet the strength requirements of the existing codes for artition board used in buildings.
    謝國慶,任虎,羅雙,等.預制高強硅酸鹽墻板力學性能試驗研究[J].混凝土與水泥制品,2021(5):71-75. XIE G Q,REN H,LUO S,et al.Experimental Study on Mechanical Properties of Prefabricated High-strength Silicate Wallboards[J].CHINA CONCRETE AND CEMENT
    圓鋼管微膨脹陶?;炷炼讨S壓極限承載力計算公式
    圓鋼管微膨脹陶?;炷炼讨S壓極限承載力計算公式
    • 李 秀1,朱紅兵2,韓 帥2
    2021年第5期
    摘要
    引用本文
    李秀,朱紅兵,韓帥.圓鋼管微膨脹陶?;炷炼讨S壓極限承載力計算公式[J].混凝土與水泥制品,2021(5):76-79. LI X,ZHU H B,HAN S.Ultimate Bearing Capacity Calculation Formula of Micro-expansive Ceramsite Concrete Steel Tubular Short Column Under Axial Compression[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):76-79.
    纖維增強混凝土耗能墻-鋼筋混凝土框架結構抗震性能數值研究
    纖維增強混凝土耗能墻-鋼筋混凝土框架結構抗震性能數值研究
    • 張妍青1,呂高勇2
    2021年第5期
    摘要
    引用本文
    摘 ? 要:在高性能纖維增強混凝土(HPFRC)耗能墻-鋼筋混凝土(RC)框架結構抗震性能試驗研究的基礎上,考慮了RC框架混凝土強度等級、框架柱配筋率、框架柱截面尺寸三個因素,進行了有限元模擬分析。結果表明:建立的HPFRC耗能墻-RC框架結構有限元模型較為準確,有限元計算結果與試驗結果吻合較好;隨著RC框架混凝土強度等級的提升,試件各個荷載特征點的水平承載力均有所提高,但變形能力變化不大;隨著框架柱配筋率和框架柱截面尺寸的增大,試件各個荷載特征點的水平承載力均明顯提高,極限位移也有所增加;為了保證此類結構的抗震性能,針對RC框架混凝土強度等級、框架柱配筋率和框架柱截面尺寸,提出了可供設計參考的相關建議值。 Abstract: Based on the experimental study on seismic performance of high performance fiber reinforced concrete (HPFRC) energy dissipation wall-reinforced concrete (RC) frame structure, three factors of RC frame concrete strength grade, frame column reinforcement ratio, and frame column section size were considered to carried out finite element simulation analysis. The results show that the established finite element model of HPFRC energy dissipation wall-RC frame structure is accurate, and the finite element calculation results are in good agreement with the experimental results. With the increase of the RC frame concrete strength grade, the horizontal bearing capacity of each load characteristic point of the specimen is improved, but the deformation capacity changes little. With the increase of the frame column reinforcement ratio and the frame column section size, the horizontal bearing capacity of each load characteristic point of the specimen is significantly increased, and the ultimate displacement is also increased. In order to ensure the seismic performance of this kind of structure, the relevant recommended values for design reference are put forward for the RC frame concrete strength grade, frame column reinforcement ratio and frame column section size.
    張妍青,呂高勇.纖維增強混凝土耗能墻-鋼筋混凝土框架結構抗震性能數值研究[J].混凝土與水泥制品,2021(5):80-84. ZHANG Y Q,LYU G Y.Numerical Study on Seismic Performance of HPFRC Energy Dissipation Wall-RC Frame Structure[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):80-84.
    混雜纖維輕骨料混凝土力學性能試驗研究
    混雜纖維輕骨料混凝土力學性能試驗研究
    • 張 萌1,駱文進2
    2021年第5期
    摘要
    引用本文
    摘 ? 要:針對當前高層建筑物中普通混凝土自重大,而輕骨料混凝土強度較普通混凝土低的現狀,以不同玄武巖纖維體積率(Vb)、聚丙烯纖維體積率(Vp)和陶粒代取代率(Rc)為影響因素,利用正交試驗法設計了9組混雜纖維輕骨料混凝土(HF-LWC),進行了抗壓強度、抗折強度和劈裂抗拉強度試驗,并基于試驗結果建立了強度預測模型。結果表明:三種因素對抗折強度的提升幅度大于對抗壓強度和劈裂抗拉強度的提升幅度,最大增幅為45.23%;隨著Vb的增加,HF-LWC的強度逐漸增大,且Vb對HF-LWC強度的影響最顯著;當Vb為0.2%、Vp為0.1%、Rc為10%時,HF-LWC強度最佳;擬合得出的HF-LWC抗壓強度、抗折強度和劈裂抗拉強度模型的精度較高。 Abstract: In view of the current situation that the self-weight of ordinary concrete in high-rise buildings, and the strength of lightweight aggregate concrete is lower than that of ordinary concrete. Taking different basalt fiber volume ratio (Vb), polypropylene fiber volume ratio (Vp) and ceramsite replacement rate(Rc) as influencing factors, 9 groups of hybrid fiber lightweight aggregate concrete (HF-LWC) were designed by orthogonal test method, and the compressive strength, flexural strength and split tensile strength tests were carried out, and the strength predictive models were established based on the test results. The results show that the increase in flexural strength of the three factors is greater than the increase in compressive strength and split tensile strength, with the maximum increase of 45.23%. With the increase of the basalt fiber volume ratio, the strength of HF-LWC gradually increases, and the basalt fiber volume ratio has the most significant influence on the strength of HF-LWC. When the basalt fiber volume ratio is 0.2%, polypropylene fiber volume ratio is 0.1% and ceramsite replacement rate is 10%, the strength of HF-LWC is the best. The accuracy of HF-LWC compressive strength, flexural strength and splitting tensile strength models are high.
    張萌,駱文進.混雜纖維輕骨料混凝土力學性能試驗研究[J].混凝土與水泥制品,2021(5):48-52. ZHANG M,LUO W J.Experimental Study on Mechanical Properties of Hybrid Fiber Lightweight Aggregate Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTES,2021(5):48-52.
    上一頁
    1
    2
    3

    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>