阅读说明：本技术 一种透水道路施工方法 (Construction method of permeable road ) 是由 崔广华 于 2021-08-19 设计创作，主要内容包括：本发明公开了一种透水道路施工方法,包括以下步骤：开挖路沟槽,对素土层进行清理,找平并碾压夯实,然后进行测量并铺设排水槽,排水槽一端与排水沟相连通；浇筑碎石层,摊铺并碾压,碾压至表面平整；浇筑透水混凝土层,铺设碾压或振捣密实后,进行覆膜养护；铺设砂石层,铺设后采用压路机进行碾压；浇筑透水沥青混合料层,采用高粘度的改性沥青结合料,静压方式碾压6个小时后即可通车。本发明通过铺设渗水混凝土层,可以过滤雨水,使得雨水自然下渗,便于通过排水槽排入管道系统,减少地面积水；通过铺设透水沥青混合料层、砂石层,能在保证透水性的情况下确保路面的强度,使得使用效果更佳。(The invention discloses a construction method of a permeable road, which comprises the following steps: digging a road groove, cleaning a plain soil layer, leveling, rolling and tamping, measuring and paving a drainage groove, wherein one end of the drainage groove is communicated with a drainage ditch; pouring a crushed stone layer, paving and rolling until the surface is flat; pouring a pervious concrete layer, laying and rolling or vibrating for compaction, and then performing film covering maintenance; paving a sand stone layer, and rolling by using a road roller after paving; and pouring a permeable asphalt mixture layer, rolling for 6 hours by adopting a high-viscosity modified asphalt binder in a static pressure mode, and then enabling the vehicle to go on. The rainwater can be filtered by laying the water seepage concrete layer, so that the rainwater naturally seeps downwards, is conveniently drained into a pipeline system through the drainage groove, and the accumulated water on the ground is reduced; through laying the bituminous mixture layer that permeates water, grit layer, can ensure the intensity on road surface under the condition of guaranteeing the water permeability for the result of use is better.)

1. A construction method of a permeable road is characterized in that: the method comprises the following steps:

(1) digging a road groove, cleaning a plain soil layer, leveling, rolling and compacting, wherein the compaction coefficient is more than 96%, laying geotextile after the compactness of the plain soil layer meets the requirement, measuring and laying a drainage groove, wherein the drainage groove is U-shaped, has the width of 4-6mm and the depth of 3-5mm, has the inclination angle of 5-10 degrees, has the gap between the drainage grooves arranged in parallel of 5-8mm, and is provided with drainage ditches at two sides of the plain soil layer, and one end of the drainage groove is communicated with the drainage ditches;

(2) pouring a gravel layer, wherein graded gravel is adopted, and the particle size of the gravel is 15-45 mm; paving the crushed stone with the thickness of 80-120mm, stirring the graded crushed stone, paving, rolling until the surface is flat, and rolling again by adopting a manual filling mode if uneven parts exist;

(3) pouring a pervious concrete layer, mixing and stirring a pervious concrete reinforcing agent, cement, stones and water, then paving the mixture, wherein the particle size of the stones is 5-30mm, the paving thickness is 100-120mm, paving the stirred pervious concrete by adopting a vibrating machine, and performing film covering maintenance after rolling or vibrating compaction, wherein the maintenance time is not less than 5 days;

(4) paving a sandstone layer with the thickness of 30-50mm, stirring the gravel, cement and water on site, paving the gravel with the particle size of 5-20mm, and rolling the gravel by using a road roller after paving;

(5) and pouring a permeable asphalt mixture layer, adopting a high-viscosity modified asphalt binder, paving the layer with the thickness of 80-120mm, mechanically paving the layer at the paving speed of 2.5-3.5m/min at the paving temperature of 165-175 ℃, rolling the layer by adopting a static pressure mode, and opening the train after finishing rolling for 6 hours.

2. The method for constructing a permeable road according to claim 1, wherein the graded crushed stone of the step (2) has a crushed stone particle size of preferably 20 to 40 mm.

3. The construction method of the permeable road according to claim 1, wherein the proportion of the stones, the cement and the water in the step (3) is 5: 2: 1, and the particle size of the stone is preferably 10-20 mm.

4. The method for constructing a permeable road according to claim 1, wherein the permeable concrete reinforcing agent in the step (3) is a permeable concrete reinforcing agent developed by Zhongji Wuhan harbor engineering design research institute Co.

5. The construction method of the permeable road according to claim 1, wherein the aggregate grain size of the crushed stones of step (4) is preferably 5-10 mm.

6. The construction method of the permeable road according to claim 1, wherein the proportion of the gravels, the cement and the water in the step (4) is 8: 3: 1.

7. the construction method of the permeable road according to claim 1, wherein the modified asphalt binder with high viscosity in the step (5) comprises 200 parts of crushed stone 100-.

8. The construction method of the permeable road according to claim 1, wherein the modified asphalt with high viscosity in the modified asphalt binder with high viscosity in the step (5) is SK high-viscosity asphalt.

Technical Field

The invention relates to a road construction method, in particular to a construction method of a permeable road.

Background

Along with the continuous deepening of the urbanization process of China, the road network is gradually improved, the ground surface of a city is gradually covered by a compact road surface, 80% -90% of rainwater cannot seep down to form surface runoff and can only be discharged to a pipeline, so that the discharge pressure is overlarge, and the problems that water is easily accumulated on the road surface, the trip safety is influenced, the roadbed is damaged and the like exist. Therefore, the permeable road is appeared, the problem of rainwater infiltration can be well solved, however, the construction of the permeable road in the prior art causes the road to have poor water permeability and low strength, and the permeable gap is easy to be blocked.

Therefore, a construction method of the permeable road is designed to solve the problems.

Disclosure of Invention

The invention provides a construction method of a permeable road to overcome the defects, which comprises the following steps:

step 1, digging a road groove, cleaning a plain soil layer, leveling, rolling and compacting, wherein the compaction coefficient is more than 96%, when the compactness of the plain soil layer meets the requirement, laying geotextile, measuring and laying a drainage groove, wherein the drainage groove is U-shaped, has the width of 4-6mm and the depth of 3-5mm, has the inclination angle of 5-10 degrees, has the gap between the drainage grooves arranged in parallel of 5-8mm, and is provided with drainage ditches at two sides of the plain soil layer, and one end of the drainage groove is communicated with the drainage ditches;

step 2, pouring a gravel layer, namely paving graded gravel with the thickness of 80-120mm, stirring the graded gravel, paving, rolling until the surface is flat, and rolling again in a manual filling mode if uneven parts exist;

step 3, pouring a pervious concrete layer, mixing and stirring the pervious concrete reinforcing agent, cement, stones and water, then paving, wherein the paving thickness is 100-120mm thick, paving the stirred pervious concrete by adopting a vibrating machine, and performing film covering maintenance after rolling or vibrating compaction, wherein the maintenance time is not less than 5 days;

step 4, paving a gravel layer with the thickness of 30-50mm, stirring the gravel layer, the cement layer and the water on site, paving, and rolling by using a road roller after paving;

step 5, pouring a permeable asphalt mixture layer, adopting a high-viscosity modified asphalt binder, paving the mixture layer with the thickness of 80-120mm, adopting mechanical paving, controlling the paving speed to be 2.5-3.5m/min and the paving temperature to be 165-175 ℃, rolling the mixture layer by adopting a static pressure mode, and then turning on the vehicle after finishing rolling for 6 hours;

further, the particle size of the crushed stone adopted by the graded crushed stone in the step 2 is preferably 20-40 mm;

preferably, the proportion of the stones, the cement and the water in the step 3 is 5: 2: 1, and the particle size of the stones is preferably 10-20 mm;

preferably, the pervious concrete reinforcing agent in the step 3 is a pervious concrete reinforcing agent developed by Zhongjianhua bay engineering design research institute limited company;

preferably, the aggregate grain size range of the crushed stone in the step 4 is 5-10 mm;

preferably, the proportion of the crushed stone, the cement and the water in the step 4 is 8: 3: 1;

preferably, the high-viscosity modified asphalt binder in the step 5 comprises 200 parts of 100-sand broken stone, 180 parts of corner amphibole, 20-50 parts of machine-made sand, 20-30 parts of limestone powder, 5-10 parts of quicklime powder, 15-25 parts of high-viscosity modified asphalt and 150 parts of 100-sand water;

preferably, the modified asphalt with high viscosity in the modified asphalt binder with high viscosity in the step 5 adopts SK high-viscosity asphalt.

The beneficial effects of the invention are as follows: the water permeability of the road surface is further improved by arranging the drainage grooves; the water seepage concrete layer is laid, so that rainwater can be filtered, naturally seeps, is conveniently drained into a pipeline system through the drainage groove, and the surface water accumulation is reduced; by paving the permeable asphalt mixture layer and the gravel layer, the strength of the pavement can be ensured under the condition of ensuring the water permeability, so that the using effect is better; by laying the geotextile, the situation that the permeable concrete blocks the pores due to the upward flooding of the base layer slurry in the rainwater climate is avoided.

Detailed Description

The invention provides a construction method of a permeable road, which is further described in detail below in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

A construction method of a permeable road comprises the following specific steps:

step 1, digging a road groove, cleaning a plain soil layer, leveling, rolling and compacting, wherein the compaction coefficient is 97%, when the compactness of the plain soil layer meets the requirement, laying geotextile, measuring and laying a drainage groove, wherein the drainage groove is U-shaped, has the width of 6mm and the depth of 3mm, has the inclination angle of 6 degrees, has the gap between the drainage grooves arranged in parallel of 7mm, and is provided with drainage ditches at two sides of the plain soil layer, and one end of the drainage groove is communicated with the drainage ditches;

step 2, pouring a gravel layer, namely paving graded gravel with the thickness of 90mm, stirring the graded gravel, paving, rolling until the surface is flat, and rolling again in a manual filling mode if uneven parts exist;

step 3, pouring a pervious concrete layer, mixing and stirring a pervious concrete reinforcing agent, cement, stones and water, then paving, wherein the paving thickness is 110mm, paving the stirred pervious concrete by adopting a vibrating machine, and performing film covering maintenance after rolling or vibrating compaction, wherein the maintenance time is not less than 5 days;

step 4, paving a sandstone layer with the thickness of 35mm, stirring the gravel, cement and water on site, then paving, and rolling by using a road roller after paving;

and 5, pouring a permeable asphalt mixture layer, adopting a high-viscosity modified asphalt binder, paving the mixture layer with the thickness of 110mm, mechanically paving the mixture layer at the speed of 2.5 m/min at the temperature of 170 ℃, rolling the mixture layer in a static pressure mode, and turning on the vehicle after finishing rolling for 6 hours.

The following introduces the raw material standards adopted in the construction process:

the graded crushed stone in the step 2 adopts the following technical performance indexes:

the cement is a Portland cement with grade number above 52.5, rapid setting and hardening, high strength and good freezing resistance.

The pervious concrete reinforcing agent is developed by Zhongji Wuhan estuary engineering design research institute Limited, and the selected raw materials are in proportion as follows: the adhesive powder comprises 30% of redispersible adhesive powder (vinyl acetate-ethylene polymer adhesive powder produced by German Wake, the size of which is 1-7 mu m), 45% of AH-1604 polyurethane emulsion, 1.5% of thickening agent (xanthan gum), 2.5% of polyoxyethylene ether defoaming agent, 10% of polycarboxylic acid water reducer (polycarboxylic acid water reducer S06 produced by Zhongjianwanhhan Bay engineering design research institute Limited), 1% of retarder (sodium gluconate) and 10% of water.

The stones in the step 3 adopt the following technical performance indexes:

the crushed stone in the step 4 adopts the following technical performance indexes:

the high-viscosity modified asphalt binder comprises the following components in percentage by weight:

120 parts of crushed stone; 170 parts of amphibole; 40 parts of machine-made sand; 3 parts of limestone powder; 9 parts of quicklime powder; 18 parts of high-viscosity modified asphalt; 100 portions of water and 150 portions of water.

The modified asphalt with high viscosity adopts SK90# high-viscosity asphalt.

Example 2

Step 1, digging a road groove, cleaning a plain soil layer, leveling, rolling and compacting, wherein the compaction coefficient is 98%, when the compactness of the plain soil layer meets the requirement, laying geotextile, measuring and laying a drainage groove, wherein the drainage groove is U-shaped, has the width of 4mm and the depth of 5mm, has the inclination angle of 8 degrees, has the gap between the drainage grooves arranged in parallel of 5mm, and is provided with drainage ditches at two sides of the plain soil layer, and one end of the drainage groove is communicated with the drainage ditches;

step 2, pouring a gravel layer, namely paving graded gravel with the thickness of 110mm, stirring the graded gravel, paving, rolling until the surface is flat, and rolling again in a manual filling mode if uneven parts exist;

step 3, pouring a pervious concrete layer, mixing and stirring a pervious concrete reinforcing agent, cement, stones and water, then paving, wherein the paving thickness is 100mm, paving the stirred pervious concrete by adopting a vibrating machine, and performing film covering maintenance after rolling or vibrating compaction, wherein the maintenance time is not less than 5 days;

step 4, paving a gravel layer with the thickness of 45mm, stirring gravel, cement and water on site, paving, and rolling by using a road roller after paving;

and 5, pouring a permeable asphalt mixture layer, adopting a high-viscosity modified asphalt binder, paving the mixture layer with the thickness of 90mm, mechanically paving the mixture layer at the speed of 3m/min at the paving temperature of 165 ℃ at the paving speed of 3m/min, rolling the mixture layer in a static pressure mode, and starting the vehicle after rolling for 6 hours.

The following introduces the raw material standards adopted in the construction process:

the graded crushed stone in the step 2 adopts the following technical performance indexes:

the cement is a Portland cement with grade number above 52.5, rapid setting and hardening, high strength and good freezing resistance.

The pervious concrete reinforcing agent is developed by Zhongji Wuhan estuary engineering design research institute Limited, and the selected raw materials are in proportion as follows: the adhesive powder comprises 30% of redispersible adhesive powder (vinyl acetate-ethylene polymer adhesive powder produced by German Wake, the size of which is 1-7 mu m), 45% of AH-1604 polyurethane emulsion, 1.5% of thickening agent (xanthan gum), 2.5% of polyoxyethylene ether defoaming agent, 10% of polycarboxylic acid water reducer (polycarboxylic acid water reducer S06 produced by Zhongjianwanhhan Bay engineering design research institute Limited), 1% of retarder (sodium gluconate) and 10% of water.

The stones in the step 3 adopt the following technical performance indexes:

the crushed stone in the step 4 adopts the following technical performance indexes:

the high-viscosity modified asphalt binder comprises the following components in percentage by weight:

180 parts of crushed stone; 130 parts of amphibole; 30 parts of machine-made sand; 20 parts of limestone powder; 5 parts of quicklime powder; 22 parts of high-viscosity modified asphalt; 100 portions of water and 150 portions of water.

The modified asphalt with high viscosity adopts SK70# high-viscosity asphalt.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the inventive concept of the present invention, and these changes and modifications are all within the scope of the present invention.