Method for changing cement concrete pavement into pervious concrete pavement

Abstract

The invention provides a method for changing a cement concrete pavement into a pervious concrete pavement. The method is characterized by comprising the following steps: A, determining the porosity P of pervious concrete and preparing corresponding pervious concrete; B, uniformly perforating holes in the cement concrete pavement, wherein it is ensured that each hole penetrates from a cement concrete pavement layer (5) to a roadbed (6), the holes are composed of uniformly distributed large holes (2) and small holes (4) uniformly distributed around the large holes (2), and the aperture ratio phi of the cement concrete pavement should be greater than P; C, laying geotechnic cloth (3) on the perforated cement concrete pavement layer (5), wherein the parts of the geotechnic cloth (3) located above the large holes (2) are cut open and the sizes of openings of the geotechnic cloth (3) are identical to the sizes of the large holes (2) so as to allow the large holes (2) to penetrate the geotechnic cloth (3); D, casting a pervious concrete surface layer (1) on the laid geotechnic cloth (3) and tamping the large holes (2) with the pervious concrete; and E, carrying out maintenance so as to form the pervious concrete pavement.

Description

technical field [0001] The invention relates to a road surface reconstruction construction method in the process of "changing from white to black", in particular to the reconstruction method of cement concrete pavement in areas such as urban gardens and parking lots. Background technique [0002] With the continuous advancement of science and technology, more and more attention has been paid to ecological and environmental protection construction, and various road renovations are being carried out in an orderly manner, among which road renovations in urban gardens, parking lots and other areas occupy a certain proportion. Traditional pavements are mostly paved with asphalt, concrete, stone slabs or cement bricks, so they are called hard pavements. Its advantages are neat pavement, high strength, and good durability. The biggest disadvantage is that it is impermeable, and the drainage depends on underground sewage pipes. When it rains, the rainwater is directly treated as sew...

AI Technical Summary

Problems solved by technology

Its advantages are neat pavement, high strength, and good durability. The biggest disadvantage is that it is impermeable, and the drainage depends on underground sewage pipes. When it rains, the rainwater is directly treated as sewage, which blocks the replenishment of groundwater by rainwater, which is not conducive to the development of the natural environment. water cycle

For areas with unsmooth drainage systems, rain and sewage are easy to deposit on the road surface, which will seriously affect urban sanitation after being dissolved into domestic garbage.

In addition, the hard pavement is easy to absorb, store and reflect solar heat, which will increase the average temperature of the ground and aggravate the formation of the urban heat island effect, which will cause negative environmental and ecological effects, which is not conducive to ecological balance and environmental protection.

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