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Construction method of water permeable cement pavement

A construction method, cement pavement technology, applied to roads, roads, on-site cohesive pavements, etc., can solve the problems of low strength, poor water permeability of permeable cement concrete, complex construction process, etc., and achieve good flexural elasticity , Inhibit ground dust, simple construction process

Active Publication Date: 2021-02-26
JINAN YELLOW RIVER CONSTR GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of poor permeable effect, low strength and complex construction process of permeable cement concrete existing in the prior art, the present invention provides a construction method of permeable cement pavement. The construction process of the construction method is simple, and the obtained cement concrete The pavement has good water permeability, high strength and certain water retention, which is beneficial to suppress the generation of dust on the road surface

Method used

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  • Construction method of water permeable cement pavement

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 (construction in summer, maximum temperature 32°C)

[0030] (1) At room temperature, add 2.5 parts of hectorite to 100 parts of water, stir well and let it stand for 20 hours, then add 300 parts of coarse aggregate, 110 parts of fine aggregate and 80 parts of cement, after stirring evenly, add mica powder 6 parts, stirred for 25 minutes to obtain permeable concrete slurry;

[0031] (2) The permeable concrete slurry obtained in step (1) is paved on the subgrade by mechanical paving, the paving speed is 0.6m / min, the thickness is 15 cm, and the vibrating leveling is carried out with a plate vibrator;

[0032] (3) After the initial setting of the concrete (this process takes 5.5 hours), cover the cement pavement with plastic film, water every 36 hours, and maintain the cement pavement for 6 days to complete the construction.

Embodiment 2

[0033] Example 2 (spring construction, maximum temperature 17°C)

[0034] (1) At room temperature, add 5 parts of hectorite to 120 parts of water, stir well and let it stand for 30 hours, then add 500 parts of coarse aggregate, 110 parts of fine aggregate and 120 parts of cement, after stirring evenly, add mica 10 parts of powder, stirred for 30 minutes to obtain permeable concrete paste;

[0035] (2) Spread the permeable concrete slurry obtained in step (1) onto the roadbed by mechanical paving at a paving speed of 0.6m / min and a thickness of 15 cm, and vibrate leveling with a flat vibrator;

[0036] (3) After the initial setting of the concrete (the process takes 6 hours), cover the cement pavement with plastic film, water every 36 hours, and maintain the cement pavement for 10 days to complete the construction.

Embodiment 3

[0037] Example 3 (construction in winter, temperature is 0~12°C)

[0038] (1) At room temperature, add 4 parts of hectorite to 120 parts of water, stir well and let stand for 25 hours, then add 400 parts of coarse aggregate, 110 parts of fine aggregate and 120 parts of cement, stir well, then add mica 10 parts of powder, stirred for 30 minutes to obtain permeable concrete paste;

[0039] (2) The permeable concrete slurry obtained in step (1) is paved on the subgrade by mechanical paving, the paving speed is 0.6m / min, the thickness is 15 cm, and the vibrating leveling is carried out with a plate vibrator;

[0040] (3) After the initial setting of the concrete (the process takes 7 hours), cover the cement pavement with plastic film, water every 48 hours, and maintain the cement pavement for 14 days to complete the construction.

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Abstract

A construction method of a water permeable cement pavement comprises the following steps: adding 2.5-5 parts of hectorite into 100-120 parts of water at normal temperature, uniformly stirring, standing for 20-30 hours, adding 300-500 parts of coarse aggregate, 100-120 parts of fine aggregate and 80-120 parts of cement, uniformly stirring, adding 6-10 parts of mica powder, and stirring for 20-40 minutes to obtain water permeable concrete slurry; paving the water permeable concrete slurry on a roadbed, carrying out flat vibration, and after the concrete is initially set, covering a film, watering and maintaining. After the concrete is dried, communicated three-dimensional pores are formed in the surface of the concrete, water absorption and water seepage can be achieved, good water-retainingproperty is achieved, and ground dust raising can be inhibited; and the mica powder is beneficial to maintaining a good pore structure of concrete. When the water permeable cement pavement is constructed, one-time forming is achieved, repeated water spraying is not needed in the maintenance process, the strength is high, the construction process is simple and convenient, and the construction period is shortened.

Description

technical field [0001] The invention belongs to the technical field of cement road construction, and in particular relates to a construction method of a permeable cement road surface. Background technique [0002] Cement concrete pavement refers to the pavement with cement concrete as the main material, referred to as concrete pavement, also known as rigid pavement, commonly known as white pavement, it is a high-grade pavement. Cement concrete pavements include plain concrete, reinforced concrete, continuously reinforced concrete, prestressed concrete and other pavements. Compared with natural soil pavement, ordinary cement concrete pavement lacks breathability, heat absorption and water permeability, which brings a series of environmental problems. Ordinary concrete has extremely poor water permeability, which causes great pressure on the drainage system of the road surface. The rainwater that cannot penetrate the ground can only be discharged into the river through the dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01C7/14C04B28/04C04B28/08C04B22/08C04B14/20
CPCC04B14/20C04B22/08C04B28/04C04B28/08C04B2111/00284C04B2111/0075C04B2201/50E01C7/14E01C7/142C04B14/02C04B14/068C04B14/202
Inventor 赵振华
Owner JINAN YELLOW RIVER CONSTR GRP CO LTD
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