concreteboxgirder相关论文
In order to simulate the erosion process of chloride ion in concrete box girder accurately,and obtain the concentration ......
针对混凝土箱梁内芯模采用木模板的缺点,提出了一种适合箱梁制作的永久性钢丝网混凝土内模板,该模板施工后不用拆除,室内试验研究表明......