A few days ago, Hebei Xinda Iron and Steel Group Co., Ltd. declared the "a test method for testing reinforced concrete and the use of devices" invention patent successfully passed the authorization of the State Intellectual Property Office, the number and quality of patents have been further improved, technological innovation work continues to make new breakthroughs, to provide a strong guarantee for developing the market.

01 Status Analysis

Reinforcement corrosion is one of the causes of premature failure and destruction of concrete structures, especially the corrosion of reinforcement in concrete is one of the leading and key factors affecting the durability of the whole structure. The reinforced concrete structure located in the Marine environment is subjected to high concentration of corrosive ions for a long time, wave load, dry and wet alternation and other factors, and the corrosion of the steel bar is prominent, which affects the service life of the whole structure.

The existing detection and testing technology has lagged behind the speed of research and development of reinforced concrete structures, and can not simulate the ocean tidal range, that is, the influence of periodic alternating dry and wet changes with tides, sunlight and sea breeze on reinforced concrete structures. The existing technology does not solve the impact resistance and evaluation results of reinforced concrete structures after corrosion.

02 Research Measures

In order to overcome the shortcomings of the prior art, Hebei Xinda Iron and Steel Group Co., Ltd. developed a test method and device for testing reinforced concrete. The field of material simulation testing technology includes comprehensive Marine environment simulation, such as using specific seawater to carry out dry and wet corrosion of reinforced concrete, weathering erosion by sunlight and sea wind, and then carry out drop hammer impact test on the corroded reinforced concrete and evaluate the test results.

The seawater corrosion testing device is connected with the water tank through the laminar flow pipe above the reaction tank, and the water tank is installed above the laminar flow through the support on the bottom surface; A pair of splints are arranged inside the shell of the air drying irradiation test device. The irradiation mechanism is installed near the inner wall of the shell, and the air drying mechanism is installed on the outer wall of the shell. The top of the safety cover of the drop hammer impact test device has a steel ball that can fall freely, and a ring steel ring is installed at the projection place.

03 Invention Achievements

Compared with the prior art, the invention patent of "A test method and device for testing reinforced concrete" adopts a test method for testing reinforced concrete and the device used by the method to more truly and comprehensively simulate the corrosion damage of seawater to reinforced concrete structures in a comprehensive Marine environment, and through testing and evaluation of the test results, the invention can be used to test concrete structures. The classification of reinforced concrete can screen out the reinforced concrete which is more suitable for use in Marine environment.

Among them, the seawater corrosion device can well simulate the corrosion of seawater to the test sample under the laminar flow state, and can simulate that in the natural Marine environment, seawater will generate waves under the action of gravity, thus producing alternating dry and wet corrosion on the concrete structure in the Marine environment.

The air drying irradiation device simulates the ultraviolet light and visible light in the sunlight irradiation in the Marine environment, and considers the main influencing factors of sunlight on corrosion in the simulation of sunlight irradiation, so as to more accurately simulate the influence of sunlight irradiation on the corrosion of reinforced concrete in the Marine environment.

The steel ball in the drop hammer impact test device carries out impact test on the corroded reinforced concrete component samples, which can effectively solve the problem that the existing technology can not test the bulk samples of reinforced concrete structures, and well complete the impact resistance detection of reinforced concrete structures after alternating seawater corrosion. By adjusting the weight, height and the number of impact of the steel ball, repeated tests can achieve the purpose of free drop hammer impact test.

The journey is bound to forge ahead, the long journey should be more vigorous sail. Hebei Xinda Iron and Steel Group Co., Ltd. will boldly enter the previously unknown "no man's land", climb the "high cold zone" that is rarely visited, and continue to take scientific and technological innovation as the most fundamental, the most core, the most critical and the most sustainable force. Guided by market demand, we constantly break technical barriers and apply the latest scientific and technological achievements to our products. Enhance core functions, enhance core competitiveness, form a unique innovation system capability and innovative development ecosystem, and promote the high-quality development of the steel industry to a new level!