To investigate the influence of curing conditions and raw materials on the performance of engineered cement-based composites (ECCs), polypropylene fiber engineered cement-based composites (PP-ECCs) were designed and manufactured. The mathematical relationships between the fly ash content, curing temperature and PP-ECC tensile properties were explored by a uniaxial tensile test and by scanning electron microscopy. The results show the following: 1) with the increase in fly ash content and curing temperature, the ultimate tensile strain, ultimate tensile stress and tensile toughness index of the PP-ECC show a trend of first increasing and then decreasing, while the modulus of elasticity increases. 2) The optimum temperature is 20°C for the hydration reaction of the cementitious material inside the PP-ECC matrix. 3) When the fly ash content is 40% and the curing temperature is 20°C, the tensile mechanical parameters, ductility and toughness index of the PP-ECC are the best. This set of variables is recommended as a reference for PP-ECC engineering applications. 4) A mathematical relationship among the tensile strength, tensile strain and elastic modulus of the PP-ECC and coupling variables (fly ash content and curing temperature) is established.


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    Titel :

    Uniaxial Tensile Performance of PP-ECC: Effect of Curing Temperatures and Fly Ash Contents


    Weitere Titelangaben:

    KSCE J Civ Eng


    Beteiligte:
    Jin, Hesong (Autor:in) / Yang, Shiyu (Autor:in) / Xu, Haiyan (Autor:in) / Xu, Ziyi (Autor:in) / Li, Fuhai (Autor:in) / Tian, Yang (Autor:in) / Zhou, Shuang (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2020-11-01


    Format / Umfang :

    12 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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