滨州地区大中型水工建筑物,自50年代以来,逐渐采用了钢筋砼结构,尤其在缺乏石料的地区,钢筋砼结构发展比较迅速。过去由于对水工钢筋检工程的耐久性认识不足,对砼的要求只注意到抗压强度和抗渗性能,对砼的强度要求一般为R140或R170,对抗渗一般要求S_4或S_6,而对抗冻融性能只要求达到D_(50),在施工中一般也未 Binzhou large and medium-sized hydraulic structures, and since the 1950s, the gradual adoption of reinforced concrete structures, especially in the absence of stone areas, the rapid development of reinforced concrete structures. In the past due to lack of understanding of the durability of hydraulic inspection process, the compressive strength and impermeability were only noticed for the requirements of concrete. The required strength of concrete was generally R140 or R170. The impermeability generally required S_4 or S_6, while the resistance Freeze-thaw performance is only required to achieve D_ (50), generally not in the construction