Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-aging modified asphalt concrete and preparation method thereof
The invention discloses a preparation method of anti-aging modified asphalt concrete. The preparation method is characterized by comprising the following steps: (1) adjusting the proportion of PB to prepare SEBS with different elastic moduli; (2) preparing a concrete material; (3) compounding the modulus of the SEBS copolymer with the concrete layer by layer from large to small in a polymerizationreaction manner; and (4) compounding the SEBS coated concrete with an asphalt mixture to prepare the anti-aging modified asphalt concrete. The preparation method is simple in step and economical in material, the mechanical property and the cycling stability of the prepared anti-aging modified asphalt concrete are improved, and the recovery rate of cycling compression 1000 under 5% strain is keptat 94% or above. The invention also provides an anti-aging modified asphalt concrete prepared by the method.
本发明公开了一种抗老化改性沥青混凝土的制备方法，其特征在于包括以下步骤：(1)调节PB的比例制备不同弹性模量的SEBS；(2)准备混凝土物料；(3)将SEBS共聚物的模量由大至小逐层与混凝土通过聚合反应的方式复合；(4)将SEBS包覆的混凝土与沥青混合料复合制备得到抗老化改性沥青混凝土。本发明的制备方法步骤简单，材料经济，制备出的抗老化改性沥青混凝土的力学性能和循环稳定性能都得到了改善，在5％应变下循环压缩1000的恢复率保持在94％以上。本发明还提供一种该方法制备的抗老化改性沥青混凝土。
Anti-aging modified asphalt concrete and preparation method thereof
The invention discloses a preparation method of anti-aging modified asphalt concrete. The preparation method is characterized by comprising the following steps: (1) adjusting the proportion of PB to prepare SEBS with different elastic moduli; (2) preparing a concrete material; (3) compounding the modulus of the SEBS copolymer with the concrete layer by layer from large to small in a polymerizationreaction manner; and (4) compounding the SEBS coated concrete with an asphalt mixture to prepare the anti-aging modified asphalt concrete. The preparation method is simple in step and economical in material, the mechanical property and the cycling stability of the prepared anti-aging modified asphalt concrete are improved, and the recovery rate of cycling compression 1000 under 5% strain is keptat 94% or above. The invention also provides an anti-aging modified asphalt concrete prepared by the method.
本发明公开了一种抗老化改性沥青混凝土的制备方法，其特征在于包括以下步骤：(1)调节PB的比例制备不同弹性模量的SEBS；(2)准备混凝土物料；(3)将SEBS共聚物的模量由大至小逐层与混凝土通过聚合反应的方式复合；(4)将SEBS包覆的混凝土与沥青混合料复合制备得到抗老化改性沥青混凝土。本发明的制备方法步骤简单，材料经济，制备出的抗老化改性沥青混凝土的力学性能和循环稳定性能都得到了改善，在5％应变下循环压缩1000的恢复率保持在94％以上。本发明还提供一种该方法制备的抗老化改性沥青混凝土。
Anti-aging modified asphalt concrete and preparation method thereof
一种抗老化改性沥青混凝土及其制备方法
CHE CHUNHUA (Autor:in)
03.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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