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LIGHT WEIGHT CONCRETE APPLICATION IN BRIDGES

机译：轻质混凝土在桥梁中的应用

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Traditionally the lightweight aggregate concrete (LWAC) made from expanded clay has been applied in buildings for many years. The improvement of the technology of production, mix composition and execution, has considerably changed the nowadays LWAC properties. The uses of various admixtures have increased the strength, stress-strain modulus and decreased creep that allowed the use of LWAC for the hardly loaded bridge structures worldwide. Paper describes the experience of use of LWAC for four bridge structures in Latvia. The obtained results showed that the use of high strength LWAC will decrease the dead load of the bridge structures without reduction of load carrying capacity. In many cases the use of LWAC will help by reconstruction and widening of existing bridge structures.
机译：传统上，由膨胀粘土制成的轻质骨料混凝土（LWAC）已在建筑物中使用了很多年。生产技术，混合料组成和执行技术的进步极大地改变了当今的LWAC性能。各种外加剂的使用提高了强度，应力-应变模量并降低了蠕变，从而使LWAC可以用于全世界几乎没有荷载的桥梁结构。论文描述了在拉脱维亚的四个桥梁结构中使用LWAC的经验。获得的结果表明，使用高强度LWAC可以减少桥梁结构的恒载而不降低承载能力。在许多情况下，LWAC的使用将有助于重建和扩建现有桥梁结构。

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