SIMPLE BEAM DESIGN, COST & CO<SUB>2</SUB> ASSESSMENT FOR GREEN CONCRETE CONTAINING HIGH VOLUME OF RECYCLED MATERIALS

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  • リサイクル材料を多量に含んだグリーンコンクリートを使用した単純梁の設計および費用・CO<SUB>2</SUB>排出量の評価
  • Simple beam design, cost & CO2 assessment for green concrete containing high volume of recycled materials

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Abstract

Now it is known the usage of different kind of by-products and recycled materials in the concrete industry, most of them showing that can be possible decrease the amount of carbon dioxide emissions and the consumption of virgin materials, and at the same time to have a concrete with good mechanical performance. In this paper were evaluated the mechanical performance, cost and CO2 emissions for different types of concrete. For these cases were replaced cement with fly ash and normal aggregate with recycled aggregate in order to see the water-binder ratio, aggregate type and fly ash effect; then were evaluated the strength, air permeability, carbon dioxide emissions and volume of recycled material for every series. After that a structural design for a simple supported beam was calculated based upon the results obtained from the experimental tests for all the series. For the structural design were considered different cases taking into account common parameters for every case like load, length, section, reinforcement, carbon dioxide emissions or cost and finally evaluating and comparing them. It was found that it is possible to utilize green concrete with high volume of recycled materials, since it has a good balance between the mechanical performance, cost and CO2 emissions compared with normal concrete.[This abstract is not included in the PDF]

Journal

  • SEISAN KENKYU

    SEISAN KENKYU 62 (4), 293-296, 2010

    Institute of Industrial Science The University of Tokyo

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