Tramcar track construction method with high-performance cement concrete as lap joint material

Abstract

The invention discloses a tramcar track construction method with high-performance cement concrete as a lap joint material. The method comprises a plurality of groove-shaped steel rails arranged on a ballast bed; a filling area filled with high-performance cement concrete is arranged between the two sides of the groove type steel rail and the pavement; during construction, firstly, the mass and preparation proportion of the premixed dry material, the special steel fiber and the water are determined; then, water is added into the premixed dry material, stirring on site to form high-fluidity concrete, special steel fibers are uniformly added, and heating to 160 DEG C is performed; after completion, inclined construction is conducted along the two sides of the groove-shaped steel rail, and high-performance cement concrete is laid on the bottom layer of the filling area in a paving mode; then, a permeable hose is arranged in the filling area; and finally, second-time laying of the high-performance cement concrete is performed. The high-performance concrete with high strength, high toughness and excellent durability is obtained, and the problems of sinking and peeling of a steel rail and a joint part are solved.

Description

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AI Technical Summary

Benefits of technology

This patented technology improves the properties of cured concrete used on rails or road surfaces through addition of special materials like fiber glass powder (FG) which helps increase their tensile strength without reducing flexibility. These improvements help make them stronger but still maintain better impacts during use compared to traditional methods such as reinforcement bars alone. Additionally, this new material prevents damage from external factors while forming the final product. Overall, these techniques aimed at create strong yet flexible and durable products made up mostly of FG filler particles mixed together.

Problems solved by technology

This patented technology solves issues such as excessively worn out fillings due to environmental stress loading (humidity) and freeze/creep behavior, leading to potential failure modes like separation between layers within the material's pore space. Additionally, current methods involve adding antiquated filled materials without sufficient compressibility, causing them to lose effectiveness after exposure to harsh environments.

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