Stray current resistant concrete material and preparation method thereof

Abstract

The invention discloses a stray current resistant concrete material and a preparation method thereof, and belongs to the field of civil engineering materials. The concrete material comprises, by weight per cubic meter of concrete, 240-440 parts of cement, 1000-1200 parts of coarse aggregate, 660-740 parts of fine aggregate, 15-30 parts of rubber powder, 100-150 parts of fly ash, 15-30 parts of spontaneous combustion coal gangue powder, 30-100 parts of glass powder, 180-220 parts of mixed water, and 2-4 parts of additives. The preparation method includes firstly, uniformly stirring the coarse aggregate, the fine aggregate and the rubber powder, adding the cement, the fly ash, the spontaneous combustion coal gangue powder and the glass powder, continuously stirring uniformly, adding a waterreducing agent and the water, and continuously stirring uniformly the mixture to obtain the stray current resistant concrete material; secondly, putting the material into a cube test mold, vibrating on a concrete vibrating table, and then maintaining and dismantling the mold. According to the method, the cost can be reduced; meanwhile, on the basis of ensuring the concrete strength grade, the anti-stray current has a better effect, so that the material has remarkable innovation significance and a potential engineering application prospect.

Description

technical field [0001] The invention belongs to the field of civil engineering materials and provides a stray current-resistant concrete material. Background technique [0002] With the continuous development of my country's economy and the steady advancement of urban construction, urban problems such as dense population and traffic congestion have become increasingly prominent. In order to solve the public transportation problems in large and medium-sized cities and promote the sustainable development of cities, it is imperative to develop urban rail transit systems. In the modern urban transportation system, underground railways and urban light rails not only relieve the pressure of ground transportation, but also bring convenience to the lives of urban residents due to their safety, fast and efficient transportation characteristics, which are not affected by weather conditions. At present, urban rail transit at home and abroad generally adopts a DC traction power supply ...

AI Technical Summary

Problems solved by technology

For example, in the investigation and analysis of the groundwater of Guangzhou Metro Line 3, it was found that the concentration of chloride ions in individual sections was as high as 7200mg / L, and the content of sulfate ions was as high as 2800mg / L. Corrosion, which leads to a decrease in the bearing capacity of reinforced concrete structures, which in turn leads to durability damage