Accelerated corrosion test device and method for frp reinforced seawater and sea sand concrete components

Abstract

The invention discloses an accelerated corrosion test device for FRP reinforcement sea water and sea sand concrete members. The accelerated corrosion test device comprises a tide environment simulating system, a loading system and an FRP rebar anchoring system. The tide environment simulating system comprises two water tanks, two water pumps are arranged between the water tanks, a water outlet of one water tank is communicated with a water inlet of the other water tank through one water pump, a water inlet of one water tank is communicated with a water outlet of the other water tank through the other water pump, and a heating rod and a wave making pump are further arranged in each water tank. The loading system comprises a set of support columns arranged in the water tanks, FRP reinforcement sea sand concrete beams are arranged on the support columns in an erected mode, levers are supported at the top of each FRP reinforcement sea sand concrete beam through a plurality of evenly-distributed buttresses respectively, one end of each lever is hinged to an FRP rebar which is anchored in the corresponding water tank through the FRP rebar anchoring mechanism, and the other end of each lever is connected with a load. The accelerated corrosion test device can simulate sea waves in the soaking process and simulate sea wind in the drying process, is high in integration level and practicality and can effectively test the long-term performance of the FRP reinforcement sea sand concrete beams after load / wetting-drying cycle accelerated corrosion.

Description

technical field [0001] The invention relates to the technical field of mechanical performance tests of civil components, in particular to an accelerated corrosion test device and method for FRP-reinforced seawater and sea-sand concrete components. Background technique [0002] Due to its excellent corrosion resistance, FRP bars have become an ideal material to replace steel bars in corrosive environments. However, due to the short history of FRP materials used in civil engineering, the test results of durability in actual engineering are scarce, so the research on its durability is particularly important. Existing accelerated corrosion tests for FRP bars only consider environmental factors, especially the lack of coupling effect of external stress. In reality, there are always external loads on engineering structures. Therefore, the influence of external loads must be considered in the durability test of FRP reinforced structures. [0003] The dry-wet circulation of seawat...

AI Technical Summary

Problems solved by technology

For large-scale beam and column members, the dry-wet cycle box cannot accommodate, and a larger test box is specially customized. The price is high, and the size of the test pieces that can be satisfied is still limited.

Moreover, the existing devices cannot meet the test requirements for coupling and applying loads to beams and columns in civil engineering while drying and wetting cycles

Images