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    蘇州混凝土水泥制品研究院有限公司

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    節能與環保

    活性激發再生磚粉對UHPC力學性能的影響
    活性激發再生磚粉對UHPC力學性能的影響
    • 杜明芳,趙永強,遆永新,尚靜靜
    2021年第6期
    摘要
    引用本文
    摘 ? 要:利用物理、化學、高溫方式對再生磚粉進行了活性激發,測試其活性指數,并研究了活性最高再生磚粉的取代率對超高性能混凝土(UHPC)抗壓性能、抗折性能和劈裂抗拉性能的影響。結果表明:物理、化學、高溫方式均有助于激發再生磚粉的活性,其中,球磨45 min再生磚粉的活性最高,為71.4%;再生磚粉UHPC的力學性能與再生磚粉取代率呈負相關;當再生磚粉取代率為10%時,再生磚粉UHPC的力學性能接近基準組。 Abstract: The physical, chemical and high temperature methods were used to activate the recycled brick powder, and its activity index was tested, and the effect of the replacement rate of the most active recycled brick powder on the compressive, flexural and split tensile properties of UHPC was studied. The results show that the physical, chemical and high temperature methods are helpful to stimulate the activity of recycled brick powder, and the activity of recycled brick powder is the highest at 71.4% by ball milling for 45 min. The mechanical properties of recycled brick powder UHPC are negatively correlated with the replacement rate of recycled brick powder. When the recycled brick powder replacement rate is 10%, the mechanical properties of recycled brick powder UHPC are close to those of the reference group.
    杜明芳,趙永強,遆永新,等.活性激發再生磚粉對UHPC力學性能的影響[J].混凝土與水泥制品,2021(6):91-94. DU M F,ZHAO Y Q,TI Y X,et al.Effect of Activated Recycled Brick Powder on Mechanical Properties of UHPC[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(6):91-94.
    工程渣土陶粒多孔混凝土力學與植生性能研究
    工程渣土陶粒多孔混凝土力學與植生性能研究
    • 辛曉斌1,李驍男1,劉永川1,李 磊2,張騰飛3,馬 炎1,劉錦濤4
    2021年第6期
    摘要
    引用本文
    辛曉斌,李驍男,劉永川,等.工程渣土陶粒多孔混凝土力學與植生性能研究[J].混凝土與水泥制品,2021(6):95-98. XIN X B,LI X N,LIU Y C,et al.Study on Mechanical and Planting Performance of Engineering Residue Ceramsite Porous Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(6):95-98.
    再生混凝土配合比優化設計
    再生混凝土配合比優化設計
    • 王立波,趙 軍
    2021年第6期
    摘要
    引用本文
    摘 ? 要:研究了再生骨料替代率、聚丙烯纖維和鋼纖維摻量對再生混凝土性能的影響。結果表明:替代率為30%的再生細骨料對混凝土的密度、和易性以及抗壓強度無顯著的負面影響;一定摻量的纖維對混凝土的工作性無顯著影響,但能有效提高再生混凝土的劈裂抗拉強度和抗折強度,改善混凝土的抗裂性和脆性。 Abstract: The effects of recycled aggregate replacement rate, polypropylene fiber and steel fiber content on the properties of recycled concrete were studied. The results show that the recycled fine aggregate with a replacement rate of 30% has no significant negative effect on the density, workability and compressive strength of concrete. A certain amount of fiber has no significant effect on the workability of concrete, but it can effectively improve the splitting tensile strength and flexural strength of recycled concrete, and improve the cracking resistance and brittleness of concrete.
    王立波,趙軍.再生混凝土配合比優化設計[J].混凝土與水泥制品,2021(6):99-102. WANG L B,ZHAO J.Optimization Design of Mix Proportion of Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2021(6):99-102.
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