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    蘇州混凝土水泥制品研究院有限公司

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    纖維水泥及制品

    玄武巖纖維增強全再生粗骨料混凝土力學性能試驗研究
    玄武巖纖維增強全再生粗骨料混凝土力學性能試驗研究
    • 許安邦1,蘇煒煒2,梁宇涵2,陳宗平2,3
    2022年第2期
    摘要
    引用本文
    摘 ? 要:研究了玄武巖纖維摻量對全再生粗骨料混凝土抗壓和抗折強度、破壞形態、單軸受壓應力-應變曲線的影響。結果表明:摻入玄武巖纖維后,試件的抗壓強度提高,受壓破壞時的整體性更好;隨著玄武巖纖維摻量的增加,試件的抗折強度逐漸增大,所有抗折試件均為峰值后脆性破壞;隨著玄武巖纖維摻量的增加,試件的峰值應力先增大后減小,峰值應變、靜壓彈性模量和軸壓韌性比總體均呈增大趨勢。 Abstract: The effects of basalt fiber content on the compressive and flexural strength, failure mode and uniaxial stress-strain curve of fully recycled coarse aggregate concrete were studied. The results show that after adding basalt fiber, the compressive strength of the specimen is improved and the integrity of compression failure is better. With the increase of basalt fiber content, the flexural strength of the specimens increases gradually, and all flexural specimens are brittle failure after peak value. With the increase of basalt fiber content, the peak stress increases first and then decreases, and the peak strain, static elastic modulus and axial compressive toughness ratio increase as a whole.
    許安邦,蘇煒煒,梁宇涵,等.玄武巖纖維增強全再生粗骨料混凝土力學性能試驗研究[J].混凝土與水泥制品,2022(2):56-60. XU A B,SU W W,LIANG Y H,et al.Experimental Study on Mechanical Properties of Basalt Fiber Reinforced Fully Recycled Coarse Aggregate Concrete[J].China Concrete and Cement Products,2022(2):56-60.
    納米SiO2和PVA纖維增強再生混凝土力學性能與抗沖擊性能研究
    納米SiO2和PVA纖維增強再生混凝土力學性能與抗沖擊性能研究
    • 周 堅,吳博健,劉 偉
    2022年第2期
    摘要
    引用本文
    摘 ? 要:研究了納米SiO2和PVA纖維摻量及摻入方式對再生混凝土(RAC)力學性能與抗沖擊性能的影響。結果表明:摻入納米SiO2和PVA纖維均可以顯著提高RAC的抗沖擊性能;當混摻0.075%的PVA纖維與1.0%納米SiO2時,RAC抗壓強度與抗沖擊性能的提高幅度最顯著。 Abstract: The influence of the content and blending method of nano-SiO2 and PVA fiber on the mechanical properties and impact resistance of recycled concrete (RAC) was studied. The results show that the impact resistance of RAC can be significantly improved by adding nano-SiO2 and PVA fiber. When 0.075% PVA fiber and 1.0% nano-SiO2 are mixed, the improvement of the compressive strength and impact resistance of RAC is the most significant.
    周堅,吳博健,劉偉.納米SiO2和PVA纖維增強再生混凝土力學性能與抗沖擊性能研究[J].混凝土與水泥制品,2022(2):52-55. ZHOU J,WU B J,LIU W.Study on Mechanical Properties and Impact Resistance of Nano-SiO2 and PVA Fiber Reinforced Recycled Concrete[J].China Concrete and Cement Products,2022(2):52-55.
    鋼渣粉對PVA纖維水泥基復合材料力學性能與韌性的影響
    鋼渣粉對PVA纖維水泥基復合材料力學性能與韌性的影響
    • 鐘棟青,王路明,胡月陽,高 宇
    2022年第2期
    摘要
    引用本文
    摘 ? 要:利用鋼渣粉等質量替代20%、40%、60%、80%的水泥制備了PVA纖維水泥基復合材料膠砂試件,并進行了抗折、抗壓試驗和薄板四點彎曲試驗,分析了鋼渣粉對PVA纖維水泥基復合材料力學性能和韌性的影響。結果表明:隨著鋼渣粉摻量的增加,試件的抗折、抗壓強度均呈下降趨勢,且抗壓強度損失較抗折強度快;當鋼渣粉摻量為20%時,試件的抗彎承載力達到最大;當鋼渣粉摻量為80%時,試件的韌性和能量吸收能力大幅提高。 Abstract: The mortar specimens of PVA fiber cement-based composites were prepared by replacing 20%, 40%, 60% and 80% cement with steel slag powder. The flexural and compressive tests and thin plate four point bending tests were carried out, and the influence of steel slag powder on the mechanical properties and toughness of PVA fiber cement-based composites was analyzed. The results show that with the increase of steel slag powder content, the flexural strength and compressive strength of the specimens decrease, and the loss of compressive strength is faster than that of flexural strength. When the steel slag powder content is 20%, the flexural bearing capacity of the specimen reaches the maximum. When the steel slag powder content is 80%, the toughness and energy absorption capacity of the specimen are greatly improved.
    鐘棟青,王路明,胡月陽,等.鋼渣粉對PVA纖維水泥基復合材料力學性能與韌性的影響[J].混凝土與水泥制品,2022(2):47-51. ZHONG D Q,WANG L M,HU Y Y,et al.Effect of Steel Slag Powder on the Mechanical Properties and Toughness of PVA Fiber Cement-based Composites[J].China Concrete and Cement Products,2022(2):47-51.
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