LIFE CYCLE IMPACT ASSESSMENT FOR CONCRETE PAVEMENT CONSIDERING SERVICE LIFE AND LIFE CYCLE COST

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  • SHINMI Tatsuo
    TOKUYAMA CORPORATION, Development Dept. Cement Business Div.（1-1, Mikage-cho, Shunan-shi, Yamaguchi 745-8648, Japan）
  • KIRINO Yusuke
    TAIHEIYO CEMENT CORPORATION, Central Research Laboratory（2-4-2, Osaku, Sakura-shi, Chiba 285-8655, Japan）
  • YOSHIMOTO Toru
    JAPAN CEMENT ASSOCIATION, R&D Laboratory（4-17-33, Toshima, Kita-ku, Tokyo 114-0003, Japan）
  • KAWAI Kenji
    HIROSHIMA UNIVERSITY, Graduate School of Advanced Science and Engineering（1-4-1, Kagamiyama, Higashi-Hiroshima-shi, Hiroshima 739-8527, Japan）

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Other Title
  • 耐用年数とライフサイクルコストを考慮したコンクリート舗装の環境影響評価

Abstract

<p>Concrete is usually considered to be a high environmental impact material because of a lot of CO2 emissions in cement production, while the cement industry uses a lot of industrial wastes as alternative raw materials and thermal energies. Recently, concrete pavement has been focused on because of its high durability, sustainability, and local production for local consumption. In this study, a life cycle impact assessment for concrete pavement was carried out in terms of not only global warming but also waste use, resource consumption, and others. Besides, the assessment results for concrete pavement were compared with those for asphalt pavement considering service life and life cycle cost. As a result, the environmental impact of concrete pavement is largely due to global warming while that of asphalt pavement is largely due to resource consumption. Comparing only negative environmental impacts between concrete pavement and asphalt pavement, the concrete pavement has less environmental impact than asphalt pavement, depending on repair conditions. In addition, the results considering both life cycle assessment and life cycle cost showed that concrete pavement is more advantageous than asphalt pavement when the service life of concrete is long.</p>

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