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Assembly type recycled concrete rural pavement

A recycled concrete, prefabricated technology, used in roads, roads, pavements paved with prefabricated blocks, etc., can solve the problems of affecting durability, concrete fragmentation durability, construction inconvenience, etc., to improve shear and bending resistance. ability, control construction quality, and avoid the effects of construction operations

Active Publication Date: 2022-02-11
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, if the dowel bar is not installed, it is easy to cause misalignment and plate breakage, but if the dowel bar is installed, the stress concentration at the dowel bar will easily occur, and the concrete will crack and the durability will be reduced.
In addition, because the gap between the prefabricated panels is too deep, the construction is inconvenient, and it is easy to fall off in the later stage, causing water leakage, which affects the durability

Method used

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  • Assembly type recycled concrete rural pavement
  • Assembly type recycled concrete rural pavement
  • Assembly type recycled concrete rural pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0236] Rural roads are to be constructed. Rural roads are Class 4 roads, and the width of the road surface shall not be less than 4.5m. The road width of the selected section shall be 5m.

[0237] Before construction, set the formwork according to the required size, remove sundries and accumulated water in the formwork, clean the contact surface between the formwork and concrete, and apply a release agent. Set the steel bars in the formwork, weld the steel bars after binding, and set the steel bar protective layer pads. After the self-compacting recycled concrete is poured, it is cured, and the mold is demoulded after the strength reaches 100 parts, so as to obtain the first plate body, the second plate body, the board, and the supporting plate of the required splicing unit. Before the first plate body, the second plate body, the board, and the supporting plate are used, the rough treatment of the contact surface must be carried out. The rough treatment of the contact surface ...

Embodiment 2

[0249] To construct the fourth-grade highway in the natural division II area, the road surface width of the selected section shall be 5m. The subgrade is clay with low night limit, and the distance between the top of the roadbed and the groundwater level is 1.2m on average. Reinforced concrete pavement is prepared by using recycled concrete material made of crushed waste concrete as coarse aggregate. Because the reinforcement is calculated according to the minimum reinforcement ratio of the structure, and the safe and conservative calculation is based on the calculation of the slab body with reinforcement. According to the traffic investigation, the design axle load P s =100kN, the heaviest axle load P m =150kN, the designed axle load is designed to act 100 times a day at the initial stage of use, and the average annual growth rate of traffic volume is 5 copies.

[0250] Carry out construction by the method in embodiment 1. And check the prepared pavement.

[0251] (1) Tra...

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Abstract

The invention provides an assembly type recycled concrete rural pavement which comprises a plurality of splicing units, and each splicing unit comprises a first plate body and a second plate body; a tenon body is arranged at one end of each of the first plate body and the second plate body along the longitudinal joint direction of the road, and a first groove body is arranged at the other end of each of the first plate body and the second plate body along the longitudinal joint direction of the road; and the second plate body is provided with a second groove body in the direction of the road transverse joint. The invention further provides a preparation method of the assembly type recycled concrete rural pavement required splicing unit. The invention further provides a construction and assembly method of the fabricated recycled concrete rural pavement. The fabricated recycled concrete rural pavement provided by the invention can be quickly paved, saves energy, protects the environment, is easy to control the construction quality, improves the integrity of a road, enables the force transfer among the pavement slabs to be reasonable, reasonably solves the defect that the prefabricated pavement slabs can only be paved along a straight line, and is more suitable for rural road conditions.

Description

technical field [0001] The invention belongs to the technical field of cement concrete pavement structure, and relates to an assembled recycled concrete rural pavement. Background technique [0002] The annual output of waste concrete in my country is huge and the utilization rate is very low. The domestic treatment of a large amount of waste concrete is still mainly landfill and stacking. In the process of building a new countryside, a large number of discarded fired clay bricks cannot be effectively reused. After the waste concrete and waste fired bricks are crushed, they can be used as coarse aggregate and fine aggregate, which can be made into recycled concrete pavement and high ductility cement-based composite materials. It not only solves the problem of waste concrete treatment, but also saves natural sand and gravel resources and reduces mining. [0003] In modern engineering, rural roads usually adopt a concrete pavement structure with concrete and steel mesh cast-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C5/00E01C5/08C04B28/04C04B111/00
CPCE01C5/003E01C5/08C04B28/04C04B2111/0075C04B2201/50C04B14/02C04B14/06C04B18/08C04B18/167C04B2103/302C04B14/48C04B18/141C04B22/143C04B22/08C04B22/064Y02W30/91
Inventor 肖建庄侯岷杰段珍华赵增丰
Owner TONGJI UNIV