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    Dynamic Mechanical Properties of Self-Compacting Rubberized Concrete under High Strain Rates

    Source: Journal of Materials in Civil Engineering:;2021:;Volume ( 033 ):;issue: 002::page 04020458
    Author:
    Jinhua Zhang
    ,
    Changling Chen
    ,
    Xiaojing Li
    ,
    Xudong Chen
    ,
    Yaoyao Zhang
    DOI: 10.1061/(ASCE)MT.1943-5533.0003560
    Publisher: ASCE
    Abstract: Self-compacting rubberized concrete (SCRC), as the primary material of road construction, is produced by adding rubber particles instead of sand to self-compacting concrete (SCC). Four kinds of concrete with different rubber contents (0%, 5%, 10%, and 15%) are tested in this study. The materials testing systems (MTS) and split Hopkinson pressure bar (SHPB) are employed to obtain quasi-static mechanical properties (compressive, splitting tensile, and bending) and dynamic mechanical properties at high strain rates (100–250  s−1). The results reveal that quasi-static mechanical strength decreases with the increase in rubber content. Compared with SCC, SCRC is dramatically high in ductility. With the increase of the strain rate, the dynamic compressive strength, peak toughness, specific energy absorption (SEA), and dynamic increase factors (DIF) all rise. The dynamic compressive strength decreases with the ascending of rubber content, while the toughness index, peak toughness, and SEA increase with the increasing rubber content. Exponential and linear fittings are utilized to help further understand the influence of strain rates. The craze-shear band-cavitation theory can also help well explain the transition strain rate of peak toughness curves. The failure modes under high strain rates are observed. The results reveal that SCRC exhibits a stronger sensitivity to rubber content and has better impact toughness than SCC.
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      Dynamic Mechanical Properties of Self-Compacting Rubberized Concrete under High Strain Rates

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    contributor authorJinhua Zhang
    contributor authorChangling Chen
    contributor authorXiaojing Li
    contributor authorXudong Chen
    contributor authorYaoyao Zhang
    date accessioned2022-01-30T22:42:38Z
    date available2022-01-30T22:42:38Z
    date issued2/1/2021
    identifier other(ASCE)MT.1943-5533.0003560.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4269455
    description abstractSelf-compacting rubberized concrete (SCRC), as the primary material of road construction, is produced by adding rubber particles instead of sand to self-compacting concrete (SCC). Four kinds of concrete with different rubber contents (0%, 5%, 10%, and 15%) are tested in this study. The materials testing systems (MTS) and split Hopkinson pressure bar (SHPB) are employed to obtain quasi-static mechanical properties (compressive, splitting tensile, and bending) and dynamic mechanical properties at high strain rates (100–250  s−1). The results reveal that quasi-static mechanical strength decreases with the increase in rubber content. Compared with SCC, SCRC is dramatically high in ductility. With the increase of the strain rate, the dynamic compressive strength, peak toughness, specific energy absorption (SEA), and dynamic increase factors (DIF) all rise. The dynamic compressive strength decreases with the ascending of rubber content, while the toughness index, peak toughness, and SEA increase with the increasing rubber content. Exponential and linear fittings are utilized to help further understand the influence of strain rates. The craze-shear band-cavitation theory can also help well explain the transition strain rate of peak toughness curves. The failure modes under high strain rates are observed. The results reveal that SCRC exhibits a stronger sensitivity to rubber content and has better impact toughness than SCC.
    publisherASCE
    titleDynamic Mechanical Properties of Self-Compacting Rubberized Concrete under High Strain Rates
    typeJournal Paper
    journal volume33
    journal issue2
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0003560
    journal fristpage04020458
    journal lastpage04020458-15
    page15
    treeJournal of Materials in Civil Engineering:;2021:;Volume ( 033 ):;issue: 002
    contenttypeFulltext
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