高原铁路混凝土制备与施工质量控制技术
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上海天佑工程咨询有限公司

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Preparation and construction quality control technology of concrete for plateau railway
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    摘要:

    青藏高原地区具有海拔高、气候干燥、温差大、辐射强等环境特点,给高原铁路建设的混凝土的配制与施工质量控制带来了诸多难题和挑战,配制适合高原环境的混凝土材料,着力解决高原极端环境下混凝土工作性差、易开裂、收缩徐变大、耐蚀性不足、耐久性能不足等突出问题,成为当前备受关注和亟待解决的重要问题。长期以来,铁路工程技术人员为改善和提高高原铁路混凝土结构的耐久性,延长铁路工程的使用寿命方面开展了大量的科学研究,取得了丰富的成果,并在实际铁路工程中得到了广泛应用。本文重点对高原铁路混凝土的原材料控制、配合比设计、拌和、运输、浇筑和养护等方面可预见的薄弱点进行了全面的研究、分析和管控,旨在为高原铁路混凝土质量控制提供指导意见

    Abstract:

    The Qinghai-Tibet Plateau is characterized by high altitude, dry climate, large temperature difference, strong radiation and other environmental characteristics, which brings many difficulties and challenges to the preparation and construction quality control of concrete for railway construction on the plateau. To solve the outstanding problems of concrete in the plateau extreme environment, such as poor working performance, easy cracking, shrinkage and creep, lack of corrosion resistance, lack of durability, etc., has become an important issue that attracts much attention and needs to be solved urgently. For a long time, railway engineers and technicians have carried out a lot of scientific research in order to improve and enhance the durability of plateau railway concrete structure and prolong the service life of railway engineering, and obtained rich results, and has been widely used in practical railway engineering. This paper focuses on the comprehensive research, analysis and control of the foreseeable weak points in the aspects of raw material control, mix design, mixing, transportation, pouring and maintenance of plateau railway concrete, in order to provide guidance for the quality control of plateau railway concrete.

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历史
  • 收稿日期:2022-09-13
  • 最后修改日期:2022-12-02
  • 录用日期:2022-12-06
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