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    Evaluation of Properties of Concrete Incorporating Fly Ash or Slag Using a Hydration Model

    Source: Journal of Materials in Civil Engineering:;2011:;Volume ( 023 ):;issue: 007
    Author:
    Xiao-Yong Wang
    ,
    Han-Seung Lee
    DOI: 10.1061/(ASCE)MT.1943-5533.0000250
    Publisher: American Society of Civil Engineers
    Abstract: Granulated slag from metal industries and fly ash from the combustion of coal are industrial by-products that have been used widely as mineral admixtures in normal and high-strength concrete. Because of the reaction between calcium hydroxide and fly ash or slag, the hydration of concrete containing fly ash or slag is much more complex than that of portland cement. In this paper, the production of calcium hydroxide in cement hydration and its consumption in the reaction of mineral admixtures is considered to develop a numerical model that simulates the hydration of concrete containing fly ash or slag. The properties of concrete incorporating fly ash or slag, such as the adiabatic temperature increase, chemically bound water, reaction degree of mineral admixture, and the compressive strength, are determined by the contribution of both cement hydration and the reaction of the mineral admixtures. The proposed model is verified with experimental data from concrete with different water to cement ratios and mineral admixture substitution ratios.
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      Evaluation of Properties of Concrete Incorporating Fly Ash or Slag Using a Hydration Model

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    contributor authorXiao-Yong Wang
    contributor authorHan-Seung Lee
    date accessioned2017-05-08T21:55:26Z
    date available2017-05-08T21:55:26Z
    date copyrightJuly 2011
    date issued2011
    identifier other%28asce%29mt%2E1943-5533%2E0000282.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/66604
    description abstractGranulated slag from metal industries and fly ash from the combustion of coal are industrial by-products that have been used widely as mineral admixtures in normal and high-strength concrete. Because of the reaction between calcium hydroxide and fly ash or slag, the hydration of concrete containing fly ash or slag is much more complex than that of portland cement. In this paper, the production of calcium hydroxide in cement hydration and its consumption in the reaction of mineral admixtures is considered to develop a numerical model that simulates the hydration of concrete containing fly ash or slag. The properties of concrete incorporating fly ash or slag, such as the adiabatic temperature increase, chemically bound water, reaction degree of mineral admixture, and the compressive strength, are determined by the contribution of both cement hydration and the reaction of the mineral admixtures. The proposed model is verified with experimental data from concrete with different water to cement ratios and mineral admixture substitution ratios.
    publisherAmerican Society of Civil Engineers
    titleEvaluation of Properties of Concrete Incorporating Fly Ash or Slag Using a Hydration Model
    typeJournal Paper
    journal volume23
    journal issue7
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0000250
    treeJournal of Materials in Civil Engineering:;2011:;Volume ( 023 ):;issue: 007
    contenttypeFulltext
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