纤维混凝土在水闸中的应用研究

Research on application of fiber concrete in sluice

传统水闸主要为铸铁闸门,为了使水闸适应不同水环境,本文提出了纤维混凝土闸门,对纤维混凝土闸门的材料力学性能和耐久性进行了试验,并进行了现场试验和可行性试验。结果表明,闸门混凝土的抗压强度、抗折强度和弹性模量分别为99.3MPa、18.2MPa和40.0GPa,表现出了较强的抗裂性能,在混凝土中,高浓度水流的磨损深度为0.5mm/(h·mm^ 2),氯离子扩散系数为2.25×10^-12 m^2/s,纤维混凝土闸门表现出较高的抗硫酸盐侵蚀能力。并且纤维混凝土闸门的生产成本比不锈钢闸门低1/10,比铸铁闸门低1/5。因此,可以在水利工程中广泛推广使用纤维混凝土闸门,尤其在恶劣水环境中,更能体现纤维混凝土闸门的优势。

The traditional sluice mainly belongs to a cast iron gate.A fiber concrete gate is proposed in the paper in order to adapt the sluice to different water environments.The mechanical properties and durability of the materials of the fiber reinforced concrete gate are tested,and the field test and feasibility test are carried out.The results show that the compressive strength,flexural strength and modulus of elasticity of the gate concrete are 99.3Mpa,18.2Mpa and 40.0Gpa respectively.It shows strong crack resistance.The wear depth of high concentration water flow is 0.5mm h^-1 mm^-2 in the concrete,the chloride diffusion coefficient is 2.25×10^-12 m^2s^-1,and the fiber reinforced concrete gate shows high sulfate resistance.In addition,the production cost of fiber reinforced concrete gate is one tenth lower than that of stainless steel gate and one fifth lower than that of cast iron gate.Therefore,it can be widely used in water conservancy projects,especially in the harsh water environment,which can better reflect the advantages of fiber reinforced concrete gate.