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    Effect of Presoaked Expanded Perlite Aggregate on the Dimensional Stability and Mechanical Properties of Engineered Cementitious Composites

    Source: Journal of Materials in Civil Engineering:;2013:;Volume ( 025 ):;issue: 006
    Author:
    Suleyman Bahadir Keskin
    ,
    Kamaran Sulaiman
    ,
    Mustafa Sahmaran
    ,
    Ismail Ozgür Yaman
    DOI: 10.1061/(ASCE)MT.1943-5533.0000553
    Publisher: American Society of Civil Engineers
    Abstract: This paper reports on an investigation of the use of expanded perlite aggregate as saturated lightweight aggregate (LWA) with respect to the mechanical and dimensional stability properties of engineered cemetitious composites (ECC). Expanded perlite aggregate was soaked in water for 24 h before its use in ECC, and replaced 10, 20, and 30% of the aggregate that was used in ECC production. The mixture proportion of a standard ECC mixture with properties that have been extensively reported in the literature is used as a reference. The properties of the specimens are compared in terms of compressive strength, flexural strength, midspan beam deflection capacity, matrix fracture toughness, drying shrinkage, autogenous shrinkage, and restrained shrinkage. The compressive strength and flexural strength of the specimens were adversely affected with presoaked LWA replacement. Midspan beam deflection capacities were partially improved, whereas matrix fracture toughness values decreased by the presoaked LWA replacement, which is beneficial with respect to the multiple cracking behavior of ECC. Presoaked LWA replacement slightly increased the drying shrinkage with respect to the reference mixture. However, the use of presoaked expanded perlite aggregate in ECC production increased the age of restrained shrinkage cracking and decreased the autogenous shrinkage capacity significantly. Therefore, together with the comparable and enhanced composite mechanical, ductility, and dimensional properties of the standard ECC mixture, the use of presoaked LWA in ECC production should improve the durability and extend the service life of structures under environmental exposure.
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      Effect of Presoaked Expanded Perlite Aggregate on the Dimensional Stability and Mechanical Properties of Engineered Cementitious Composites

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    http://yetl.yabesh.ir/yetl1/handle/yetl/66936
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    contributor authorSuleyman Bahadir Keskin
    contributor authorKamaran Sulaiman
    contributor authorMustafa Sahmaran
    contributor authorIsmail Ozgür Yaman
    date accessioned2017-05-08T21:55:59Z
    date available2017-05-08T21:55:59Z
    date copyrightJune 2013
    date issued2013
    identifier other%28asce%29mt%2E1943-5533%2E0000588.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/66936
    description abstractThis paper reports on an investigation of the use of expanded perlite aggregate as saturated lightweight aggregate (LWA) with respect to the mechanical and dimensional stability properties of engineered cemetitious composites (ECC). Expanded perlite aggregate was soaked in water for 24 h before its use in ECC, and replaced 10, 20, and 30% of the aggregate that was used in ECC production. The mixture proportion of a standard ECC mixture with properties that have been extensively reported in the literature is used as a reference. The properties of the specimens are compared in terms of compressive strength, flexural strength, midspan beam deflection capacity, matrix fracture toughness, drying shrinkage, autogenous shrinkage, and restrained shrinkage. The compressive strength and flexural strength of the specimens were adversely affected with presoaked LWA replacement. Midspan beam deflection capacities were partially improved, whereas matrix fracture toughness values decreased by the presoaked LWA replacement, which is beneficial with respect to the multiple cracking behavior of ECC. Presoaked LWA replacement slightly increased the drying shrinkage with respect to the reference mixture. However, the use of presoaked expanded perlite aggregate in ECC production increased the age of restrained shrinkage cracking and decreased the autogenous shrinkage capacity significantly. Therefore, together with the comparable and enhanced composite mechanical, ductility, and dimensional properties of the standard ECC mixture, the use of presoaked LWA in ECC production should improve the durability and extend the service life of structures under environmental exposure.
    publisherAmerican Society of Civil Engineers
    titleEffect of Presoaked Expanded Perlite Aggregate on the Dimensional Stability and Mechanical Properties of Engineered Cementitious Composites
    typeJournal Paper
    journal volume25
    journal issue6
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0000553
    treeJournal of Materials in Civil Engineering:;2013:;Volume ( 025 ):;issue: 006
    contenttypeFulltext
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