Porous brickwalk laying method

Abstract

A method for laying the bricks of water-permeable pedestrian include such steps as tamping the bed of pedestrian, spreading broken stone layer, spreading the mixture of ballast and stone powder, levelling, spraying water, compacting, spreading liner layer of broken stone and fine sand, spraying water and laying bricks. Its advantages are high air and water permeability, smooth pavement, high load-bearing power, and low cost.

Description

Technical field: [0001] The invention relates to the field of municipal environmental protection engineering, in particular to a method for paving pavement bricks. Background technique: [0002] The pavement methods of the existing pavement bricks generally adopt the following two methods after the composite soil is rolled: one is the full sand cushion, and the pavement bricks are laid on the sand. Although the full sand cushion has good water permeability, the disadvantage is that it is not durable , No load bearing. When the rain falls rapidly, the sand layer at the bottom of the pavement bricks is washed away by the rain, resulting in uneven pavement of pavement bricks. This kind of pavement brick paved with full sand is easy to sink when the vehicle is pressed down, making the road surface uneven. The other is the concrete cushion. Although this cushion is resistant to heavy pressure and has good stability, its disadvantages are that it is airtight and watertight, and t...

AI Technical Summary

Problems solved by technology

[0002] The pavement methods of the existing pavement bricks generally adopt the following two methods after the composite soil is rolled: one is the full sand cushion, and the pavement bricks are laid on the sand. Although the full sand cushion has good water permeability, the disadvantage is that it is not durable , no load

When it rains in a hurry, the sand layer at the bottom of the pavement bricks is washed away by the rain, resulting in uneven pavement of pavement bricks. This kind of pavement brick paved with full sand is easy to sink when the vehicle is pressed down, making the road surface uneven.

The other is the concrete cushion. Although this cushion is resistant to heavy pressure and has good stability, its disadvantages are that it is airtight and watertight, and the brick surface fades quickly.

This method has high engineering cost and long construction time, and is not conducive to urban water conservation.

According to reports, the groundwater level in many cities is constantly declining, and the recovery of the city's groundwater level mainly depends on precipitation. However, because concrete is used as a cushion to lay pavement bricks, the water permeability is lost, and a large amount of rainwater flows in vain. Sewers, groundwater not replenished

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