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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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    再生PET塑料骨料對砂漿單軸受壓性能的影響
    Effect of Recycled PET Plastic Aggregate on Uniaxial Compression Performance of Mortar
    2022年第1期
    再生PET塑料骨料;單軸受壓;應力-應變曲線;峰值應力;抗壓韌性指數;本構關系
    Recycled PET plastic aggregate; Uniaxial compressive; Stress-strain curve; Peak stress; Compressive toughness index; Constitutive relationship
    2022年第1期
    10.19761/j.1000-4637.2022.01.095.05
    紹興市科技創新計劃項目(2018C30007、2019B22002)。
    陸 俊1,鮑 聰2,方劉基2,占海華3,梁超鋒2
    1.浙江永堅新材料科技股份有限公司,浙江 紹興 312369;2.紹興文理學院 土木工程學院, 浙江 紹興 312000;3.紹興文理學院 紡織服裝學院,浙江 紹興 312000

    陸 俊1,鮑 聰2,方劉基2,占海華3,梁超鋒2

    陸俊,鮑聰,方劉基,等.再生PET塑料骨料對砂漿單軸受壓性能的影響[J].混凝土與水泥制品,2022(1):95-99.

    LU J,BAO C,FANG L J,et al.Effect of Recycled PET Plastic Aggregate on Uniaxial Compression Performance of Mortar[J].China Concrete and Cement Products,2022(1):95-99.

    瀏覽量:
    1000
    摘 ? 要:利用廢棄PET塑料制備了再生PET塑料骨料(RPA),研究了RPA部分取代天然細骨料(0、10%、20%、30%、40%)對砂漿單軸受壓性能的影響,并建立了摻RPA砂漿的單軸受壓應力-應變本構關系。結果表明:隨著RPA取代率的增加,試件的延性增加,應力-應變曲線上升段和下降段斜率逐漸降低,峰值應力和彈性模量逐漸降低;試件的峰值應變、極限應變和抗壓韌性指數均隨著RPA取代率的增加而增大;建立的摻RPA砂漿單軸受壓本構方程計算結果與試驗結果吻合較好。 Abstract: Recycled PET plastic aggregate(RPA) was prepared from waste PET plastics. The effect of RPA partially replacing natural fine aggregate (0, 10%, 20%, 30%, 40%) on the uniaxial compressive properties of mortar was studied, and the uniaxial compressive stress-strain constitutive relationship of mortar mixed with RPA was established. The results show that with the increase of RPA replacement rate, the ductility of the specimen increases, the slopes of the rising and falling sections of the stress-strain curve gradually decrease, and the peak stress and elastic modulus gradually decrease. The peak strain, ultimate strain and compressive toughness index increase with the increase of RPA replacement rate. The established constitutive equation of the mortar mixed with RPA under uniaxial compression is in good agreement with the experimental results.
    英文名 : Effect of Recycled PET Plastic Aggregate on Uniaxial Compression Performance of Mortar
    刊期 : 2022年第1期
    關鍵詞 : 再生PET塑料骨料;單軸受壓;應力-應變曲線;峰值應力;抗壓韌性指數;本構關系
    Key words : Recycled PET plastic aggregate; Uniaxial compressive; Stress-strain curve; Peak stress; Compressive toughness index; Constitutive relationship
    刊期 : 2022年第1期
    DOI : 10.19761/j.1000-4637.2022.01.095.05
    文章編號 :
    基金項目 : 紹興市科技創新計劃項目(2018C30007、2019B22002)。
    作者 : 陸 俊1,鮑 聰2,方劉基2,占海華3,梁超鋒2
    單位 : 1.浙江永堅新材料科技股份有限公司,浙江 紹興 312369;2.紹興文理學院 土木工程學院, 浙江 紹興 312000;3.紹興文理學院 紡織服裝學院,浙江 紹興 312000

    陸 俊1,鮑 聰2,方劉基2,占海華3,梁超鋒2

    陸俊,鮑聰,方劉基,等.再生PET塑料骨料對砂漿單軸受壓性能的影響[J].混凝土與水泥制品,2022(1):95-99.

    LU J,BAO C,FANG L J,et al.Effect of Recycled PET Plastic Aggregate on Uniaxial Compression Performance of Mortar[J].China Concrete and Cement Products,2022(1):95-99.

    摘要
    參數
    結論
    參考文獻
    引用本文

    摘   要:利用廢棄PET塑料制備了再生PET塑料骨料(RPA),研究了RPA部分取代天然細骨料(0、10%、20%、30%、40%)對砂漿單軸受壓性能的影響,并建立了摻RPA砂漿的單軸受壓應力-應變本構關系。結果表明:隨著RPA取代率的增加,試件的延性增加,應力-應變曲線上升段和下降段斜率逐漸降低,峰值應力和彈性模量逐漸降低;試件的峰值應變、極限應變和抗壓韌性指數均隨著RPA取代率的增加而增大;建立的摻RPA砂漿單軸受壓本構方程計算結果與試驗結果吻合較好。

    Abstract: Recycled PET plastic aggregate(RPA) was prepared from waste PET plastics. The effect of RPA partially replacing natural fine aggregate (0, 10%, 20%, 30%, 40%) on the uniaxial compressive properties of mortar was studied, and the uniaxial compressive stress-strain constitutive relationship of mortar mixed with RPA was established. The results show that with the increase of RPA replacement rate, the ductility of the specimen increases, the slopes of the rising and falling sections of the stress-strain curve gradually decrease, and the peak stress and elastic modulus gradually decrease. The peak strain, ultimate strain and compressive toughness index increase with the increase of RPA replacement rate. The established constitutive equation of the mortar mixed with RPA under uniaxial compression is in good agreement with the experimental results.

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    (1)隨著RPA取代率的增加,砂漿試件的破壞更具延性特征,單軸受壓應力-應變曲線上升段和下降段的斜率逐漸降低。
    (2)試件的峰值應變和極限應變均隨著RPA取代率的增加而逐漸增大。
    (3)試件的峰值應力和彈性模量均隨著RPA取代率的增加而逐漸降低。
    (4)隨著RPA取代率的增加,試件的受壓耗能能力逐漸增強,不同取代率RPA砂漿試件的抗壓韌性指數較NC試件提升了19.1%~38.6%。
    (5)本文建立的不同RPA取代率下砂漿試件的單軸受壓本構關系可較好地描述摻RPA砂漿試件在單軸受壓下的應力和應變發展規律。

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    陸俊,鮑聰,方劉基,.再生PET塑料骨料對砂漿單軸受壓性能的影響[J].混凝土與水泥制品,2022(1):95-99.

    LU J,BAO C,FANG L J,et al.Effect of Recycled PET Plastic Aggregate on Uniaxial Compression Performance of Mortar[J].China Concrete and Cement Products,2022(1):95-99. 

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