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    蘇州混凝土水泥制品研究院有限公司

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    發布時間:2020-01-06 00:00:00
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    節能與環保

    鋼渣微粉對超高性能混凝土(UHPC)性能的 影響
    鋼渣微粉對超高性能混凝土(UHPC)性能的 影響
    • 唐咸遠,郭 彬,馬杰靈,羅 杰
    2021年第11期
    摘要
    引用本文
    摘 ? 要:研究了鋼渣微粉替代石英粉對超高性能混凝土(UHPC)性能的影響。結果表明:水膠比分別為0.18、0.19的UHPC試件的28 d抗壓強度均在120 MPa以上,且水膠比為0.19的UHPC的工作性更好,流動度為195 mm;鋼渣微粉替代石英粉對UHPC試件的抗壓強度無明顯影響;在鋼渣微粉摻量為100%的情況下,控制水膠比為0.20、水灰比為0.35、膠砂比為1.63時,可配制28 d抗壓強度為147.5 MPa的UHPC。 Abstract: The effect of steel slag powder instead of quartz powder on the properties of ultra-high performance concrete (UHPC) was studied. The results show that the 28 d compressive strength of UHPC specimens with water-binder ratio of 0.18 and 0.19 is more than 120 MPa, and the workability of UHPC with water-binder ratio of 0.19 is better and the fluidity is 195 mm. The substitution of steel slag powder for quartz powder has no obvious effect on the compressive strength of UHPC specimens. When the content of steel slag powder is 100%, the water-binder ratio is 0.20, the water-cement ratio is 0.35 and the binder-sand ratio is 1.63, and the 28 d compressive strength of UHPC can reach 147.5 MPa.
    唐咸遠,郭彬,馬杰靈,等.鋼渣微粉對超高性能混凝土(UHPC)性能的影響[J].混凝土與水泥制品,2021(11):82-84,89. TANG X y,GUO B,MA J l,et al.Effect of Steel Slag Powder on the Properties of Ultra-high Performance Concrete (UHPC)[J].China Concrete and Cement Products,2021(11):82-84,89.
    利用脫硫石膏漿液制備高強水泥基自流平砂漿的應用研究
    利用脫硫石膏漿液制備高強水泥基自流平砂漿的應用研究
    • 徐風廣,楊鳳玲,侯海軍,陳小衛
    2021年第11期
    摘要
    引用本文
    摘 ? 要:以鋁酸鹽水泥為主要膠凝材料,摻入脫硫石膏漿液和普通硅酸鹽水泥,制備了地面用水泥基自流平砂漿,通過宏觀性能測試(強度、耐磨性和尺寸變化率)和XRD分析,研究了脫硫石膏漿液對水泥基自流平砂漿性能的影響。結果表明:當鋁酸鹽水泥摻量為30.3%~36.9%、脫硫石膏漿液摻量為18%~28%、普通硅酸鹽水泥摻量為5.3%~6.0%、河砂摻量為35%~39%時,制備的水泥基自流平砂漿具有強度高、耐磨性好和收縮率低的特點;脫硫石膏漿液能促進基體中早期AFt的生成,保證后期AFt的生成量,從而提高脫硫石膏漿液水泥基自流平砂漿的強度。 Abstract: The cement-based self-leveling mortar for ground was prepared by using aluminate cement as main cementitious material, adding desulfurization gypsum slurry and ordinary portland cement. The influence of desulfurization gypsum slurry on the properties of cement-based self-leveling mortar was studied by macro performance tests (strength, wear resistance and dimensional change rate) and XRD analysis. The results show that the cement-based self-leveling mortar has the characteristics of high strength, good wear resistance and low shrinkage when the content of aluminate cement is 30.3%~36.9%, the content of desulfurization gypsum slurry is 18%~28%, the content of ordinary portland cement is 5.3%~6.0%, and the content of river sand is 35%~39%. The desulfurized gypsum slurry can promote the formation of early AFt in the matrix and ensure the generation of AFt in the later period, thereby improving the strength of the cement-based self-leveling mortar of the desulfurized gypsum slurry.
    徐風廣,楊鳳玲,侯海軍,等.利用脫硫石膏漿液制備高強水泥基自流平砂漿的應用研究[J].混凝土與水泥制品,2021(11):85-89. XU Feng-guang, YANG Feng-ling, HOU Hai-jun,et al.Rescarch on Application of Preparation of High Strength Cement-based Self-leveling Mortar with Desulfurization Gypsum Slurry[J].China Concrete and Cement Products,2021(11):85-89.
    城市垃圾熔融殘渣對泡沫混凝土性能的影響
    城市垃圾熔融殘渣對泡沫混凝土性能的影響
    • 李群杰1, 歐陽東1, 趙 倩2,3,黃柯柯2,3,林文偉1,熊軍紅1
    2021年第11期
    摘要
    引用本文
    摘 ? 要:研究了礦渣、粉煤灰以及熱等離子技術處理城市垃圾后的熔融殘渣(MWTPT)替代10%的水泥對泡沫混凝土性能的影響,并通過XRD、水化熱和SEM方法分析了MWTPT的作用機理。結果表明:MWTPT可以作為礦物摻合料替代水泥制備泡沫混凝土;摻MWTPT泡沫混凝土的抗壓強度在后期優于摻粉煤灰的泡沫混凝土,抗折強度在早期優于摻礦渣泡沫混凝土和摻粉煤灰泡沫混凝土;與摻粉煤灰泡沫混凝土相比,摻MWTPT泡沫混凝土的7 d、15 d抗折強度分別提高了19.1%、31.8%。 Abstract: The effects of slag, fly ash and the municipal waste residues after treated by thermal plasma technology(MWTPT) replacing 10% cement on the performance of foamed concrete were studied, and the mechanism of MWTPT was analyzed by XRD, hydration heat and SEM. The results show that MWTPT can be used as mineral admixture instead of cement to prepare foamed concrete. The compressive strength of the foamed concrete with MWTPT is better than that of the foamed concrete with fly ash in the later stage, and the flexural strength is better than that of the foamed concrete with slag and the foamed concrete with fly ash in the early stage. The 7 d and 15 d flexural strength of the foamed concrete with MWTPT are 19.1% and 31.8% higher than those of the foamed concrete with fly ash respectively.
    李群杰,歐陽東,趙倩,等.城市垃圾熔融殘渣對泡沫混凝土性能的影響[J].混凝土與水泥制品,2021(11):90-93. LI Q J,OUYANG D,ZHAO Q,et al.Influence of the Municipal Waste Residues on the Properties of Foamed Concrete[J].China Concrete and Cement Products,2021(11):90-93.
    植生混凝土的性能研究及在壩坡防護工程中的應用
    植生混凝土的性能研究及在壩坡防護工程中的應用
    • 董全文1,賈文文2,謝慧東2
    2021年第11期
    摘要
    引用本文
    摘 ? 要:研究了不同成型方式和水灰比對植生混凝土性能的影響。結果表明:振動成型的植生混凝土的連續孔隙率最小,插搗成型的植生混凝土的抗壓強度最高,壓搗成型的植生混凝土的連續孔隙率和抗壓強度均滿足相關設計要求;植生混凝土的抗壓強度隨著水灰比的增大而降低,連續孔隙率隨著水灰比的增大而增大;當水灰比為0.27時,采用壓搗成型方式制備得到的植生混凝土的性能滿足相關設計要求,并已成功應用于濟南趙莊險工48#壩壩坡防護工程。 Abstract: The effects of different forming methods and water-cement ratio on the properties of planting concrete were studied. The results show that the porosity of the planting concrete based on vibration molding is the smallest, the compressive strength of the planting concrete based on plug tamping is the highest, and the porosity and compressive strength of the planting concrete based on pressure tamping meet the relevant design requirements. The compressive strength of planting concrete decreases with the increase of water-cement ratio, and the porosity increases with the increase of water-cement ratio. When the water-cement ratio is 0.27, the performance of planting concrete prepared by pressure tamping method meets the relevant design requirements, and has been successfully applied to the dam slope protection project of Zhaozhuang dangerous engineering 48# dam in Jinan.
    董全文,賈文文,謝慧東.植生混凝土的性能研究及在壩坡防護工程中的應用[J].混凝土與水泥制品,2021(11):94-98. DONG Q W,JIA W W,XIE H D.Study on Performance of Planting Concrete and Its Application in Dam Slope Protection Engineering[J].China Concrete and Cement Products,2021(11):94-98.
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