CN111074719A - Rapid-flushing exposed aggregate permeable concrete pavement and construction process thereof - Google Patents
Rapid-flushing exposed aggregate permeable concrete pavement and construction process thereof Download PDFInfo
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- E01C11/00—Details of pavings
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- C04B41/63—Macromolecular compounds
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- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C7/00—Coherent pavings made in situ
- E01C7/08—Coherent pavings made in situ made of road-metal and binders
- E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
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Abstract
The invention discloses a rapid-flushing exposed aggregate permeable concrete pavement which comprises a concrete layer, wherein the concrete layer is prepared from the following components in parts by weight: natural aggregate, a cementing material, water and an aqueous inorganic liquid reinforcing agent. Wherein the concrete layer comprises the following components in parts by weight: natural aggregate: and (3) cementing materials: water: aqueous inorganic liquid strengthening agent 530: 150: 78: 3. the construction process of the pavement does not need to spray retarder, reduces construction procedures, effectively improves construction efficiency and reduces construction cost. The invention also discloses a construction process for quickly washing the exposed aggregate permeable concrete pavement.
Description
Technical Field
The invention relates to the field of urban garden construction, in particular to a rapid-flushing exposed aggregate permeable concrete pavement and a construction process thereof.
Background
Under the new form and new requirements of novel urbanization construction and sponge city construction strengthening, more and more cities are added into city park construction, and the city park is one of main contents of city construction and is an important component of a city ecosystem and city landscape. The garden road is the venation of the city park, plays the roles of traffic organization and guide line, and with the popularization of the concept of sponge city construction, the pervious concrete pavement is widely applied to the city park construction.
The prior commonly used pervious concrete mainly comprises plain pervious concrete, colored pervious concrete (containing colored asphalt pervious concrete), colored pervious concrete, exposed aggregate pervious concrete and the like, all kinds of pervious concrete are purposefully designed and applied according to different places, environments, bearing capacity requirements and basic conditions of projects, and the pervious concrete has more practicability and applicability in pattern and color change.
In the construction process of the exposed aggregate permeable concrete pavement, a layer of retarder is sprayed on the concrete surface after the concrete pavement is laid, and then the concrete pavement is washed to expose the aggregate of the surface layer. In the retarder spraying process, strict requirements are imposed on the consistency of the retarder, if the consistency of the retarder is too low, the retarder is easy to seep to the lower layer of concrete in the spraying process, so that the concrete cementing material cannot be coagulated, and the aggregate and the cementing material are not firmly combined and are easy to fall off; if the consistency of the retarder is too high, the retarder is difficult to seep down to the target depth, so that the exposed area of the aggregate is too small, and the overall color and appearance are affected. Therefore, the existing exposed aggregate permeable concrete pavement construction process is complex in procedure, needs two times of maintenance, is long in construction period and high in cost, and the construction quality is affected and quality problems are caused by deviation of a plurality of key procedures (such as retarder consistency, treatment time, weather and changes of aggregate and cementing material).
Disclosure of Invention
In order to solve the technical problems, the invention discloses a rapid-flushing exposed aggregate permeable concrete pavement, which does not need to be sprayed with a retarder in the pavement construction process, reduces the construction procedures, effectively improves the construction efficiency and reduces the construction cost. The invention also discloses a construction process for quickly washing the exposed aggregate permeable concrete pavement.
The invention is realized by the following technical scheme:
the quick-flushing exposed aggregate permeable concrete pavement comprises a concrete layer, wherein the concrete layer is prepared from the following components in parts by weight: natural aggregate, a cementing material, water and an aqueous inorganic liquid reinforcing agent.
Wherein the concrete layer comprises the following components in parts by weight: natural aggregate: and (3) cementing materials: water: aqueous inorganic liquid strengthening agent 530: 150: 78: 2.6 to 3.3.
According to the invention, the water-based inorganic liquid reinforcing agent is added into the raw material components of the concrete layer to replace the traditional retarder, only the dosage and the proportion of the water-based inorganic liquid reinforcing agent are required to be controlled, after the prepared concrete is paved into the concrete layer, the surface of the prepared exposed aggregate pavement can be directly washed by water without using the retarder for surface treatment, the surface and the color of the prepared exposed aggregate pavement are attractive and uniform, the aggregate does not fall off, the durability is strong, the process is simple, the construction efficiency is effectively improved, the construction cost is reduced, and the controllability of the pavement construction quality is strong.
Further, the natural aggregate is one or more mixed aggregates of granite, basalt, perlite or dolomite, the cementing material is cement, and the aqueous inorganic liquid reinforcing agent is: the aqueous inorganic liquid reinforcing agent for the Diaos colored pervious concrete.
Furthermore, a sealing layer is bonded above the concrete layer, and a permeable concrete layer, a broken stone cushion layer, a water-filtering geotextile and a sand gravel cushion layer are sequentially arranged below the concrete layer.
Further, the thickness of the concrete layer is 50-100 mm, the particle size of the natural aggregate is 4-6mm, the thickness of the pervious concrete layer is 100-150 mm, the thickness of the gravel cushion layer is 200-300 mm, the water-filtering geotextile is two layers, and the thickness of the gravel cushion layer is 200-300 mm.
Further, the sealing layer is colorless and transparent, the permeable concrete layer is C25 large-aperture strong permeable concrete, and the unit area mass of the water-filtering geotextile is 200g/m2And the plain soil below the sand gravel cushion layer is compacted, and the compaction coefficient is greater than or equal to 0.97.
A construction process for quickly washing a bone exposing material permeable concrete pavement comprises the following steps:
1) preparing concrete: preparing natural aggregate, a cementing material, water and a water-based inorganic liquid reinforcing agent into concrete for later use;
2) after the plain soil is tamped, a gravel stone cushion layer, two layers of water-filtering geotextiles, a gravel cushion layer, a permeable concrete layer and a concrete layer are sequentially laid from bottom to top;
3) after the concrete layer is laid, carrying out surface washing, and immediately carrying out covering maintenance by using a plastic film after the surface washing is finished;
4) and after the maintenance is finished, joint cutting is carried out on the expansion joint, joints are filled, and finally the concrete layer is sealed by using the sealing layer.
In the step 1), the concrete preparation process comprises the following steps:
11) weighing natural aggregate, a cementing material, water and a water-based inorganic liquid reinforcing agent according to the weight ratio for later use;
12) and (3) putting the natural aggregate and the cementing material into a stirrer, dry-stirring for 1min, mixing the inorganic liquid reinforcing agent with the inorganic liquid reinforcing agent before water extraction, adding the mixture into the stirrer for 2-3 times, and totally controlling the stirring time to be 120-300 s.
Further, in step 3), the surface washing method is as follows: after the concrete layer is laid, before the concrete is initially set (within 2h after the concrete layer is laid), the surface of the concrete layer is flushed by water, the flushing pressure is controlled within 5MPa, the flushing angle is vertical to the concrete road surface, and the water outlet shape of the high-pressure gun head is adjusted to be dispersion linearity.
Further, in the step 4), before the concrete layer is sealed, the surface of the concrete layer is washed clean, after the surface is completely dried, the surface is maintained for 8 hours after being sprayed by using a sealant, wherein the sealant is a dipropylene polyurethane curing agent.
According to the invention, the water-based inorganic liquid reinforcing agent is added into the concrete layer raw material, the washing pressure and the washing angle of the surface washing of the concrete layer are controlled, the surface of the concrete layer is directly washed under the condition of not adding a retarder for surface treatment, the appearance and the color of the prepared exposed aggregate permeable concrete pavement are attractive and uniform, the aggregate is not easy to fall off, and compared with the prior art, the process is saved, the construction time is shortened, and the construction cost is effectively reduced.
Before paving the exposed aggregate permeable concrete, whether side bands or templates on two sides are firmly installed or not is respectively checked, whether the rechecking plane elevation meets the design requirement or not is checked, whether deformation joints are arranged according to the requirement or not is checked, impurities on the surface of a base layer are cleaned, and watering and moistening are carried out. The pervious concrete with exposed aggregate belongs to dry concrete, has fast initial setting, and the transportation time of the concrete is generally controlled according to climatic conditions. During concrete transportation, the humidity of the mixture should be kept, and measures such as covering should be taken if necessary.
Garden road curve is more, and kneck width differs, when carrying out the concrete that exposes the aggregate and permeate water and pave the construction, often adopts the artifical mode that paves to go on, and the thickness of paving in vain is 1.05 ~ 1.20 times of design thickness generally. Leveling the surface layer by adopting an aluminum alloy scraping bar, finely leveling and compacting by using a supporting type troweling machine, and troweling and compacting after material supplementing and leveling are carried out on uneven parts; and after the surface construction is finished, if the corners are lack of edges and fall off, local padding compaction is carried out by adopting a handheld steel plate trowel.
According to the standard requirement, the garden road should be provided with expansion joints at certain intervals longitudinally, after the exposed aggregate permeable concrete reaches the design requirement, the expansion joints can be cut, and the joint filling material generally adopts flexible materials such as cement and ointment.
Before the aggregate-exposed permeable concrete surface layer is sealed, the concrete surface is washed clean by clear water, the surface layer sealing construction can be carried out after the surface is completely dried, the common sealant is a double-propyl polyurethane curing agent, the traffic can be opened after the sealant is sprayed for 8 hours, and the surface layer protection needs to be paid attention to in the period.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the rapid-flushing exposed aggregate permeable concrete pavement, the water-based inorganic liquid reinforcing agent is added into the raw material components of the concrete layer to replace the traditional retarder, only the dosage and the proportion of the water-based inorganic liquid reinforcing agent are needed to be controlled, after the prepared concrete is laid into the concrete layer, the surface can be directly flushed by water without using a coagulant for surface treatment, the surface and the color of the prepared exposed aggregate pavement are attractive and uniform, aggregates do not fall off, the durability is strong, the process is simple, the construction efficiency is effectively improved, the construction cost is reduced, and the controllability of the pavement construction quality is strong;
2. the construction process for quickly washing the exposed aggregate permeable concrete pavement disclosed by the invention has the advantages that the water-based inorganic liquid reinforcing agent is added into the concrete layer raw materials, the washing pressure and the washing angle for washing the surface of the concrete layer are controlled, the surface of the concrete layer is directly washed under the condition of not adding a retarder for surface treatment, the appearance and the color of the prepared exposed aggregate permeable concrete pavement are attractive and uniform, the aggregate is not easy to fall off, and compared with the prior art, the process is saved, the construction time is shortened, and the construction cost is effectively reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic representation of a concrete layer according to the present invention;
FIG. 2 is a sectional view of the exposed aggregate permeable concrete pavement of the invention.
Reference numbers and corresponding part names in the drawings:
1-concrete layer, 2-permeable concrete layer, 3-gravel cushion layer, 4-water-filtering geotextile, 5-gravel cushion layer and 6-plain soil.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1 and 2, the rapid-flushing exposed aggregate permeable concrete pavement comprises a concrete layer 1, wherein the concrete layer 1 is prepared from the following components: natural aggregate, a cementing material, water and an aqueous inorganic liquid reinforcing agent.
Wherein the concrete layer 1 comprises the following components in parts by weight: natural aggregate: and (3) cementing materials: water: aqueous inorganic liquid strengthening agent 530: 150: 78: 3.
further, the natural aggregate is granite or basalt, the cementing material is cement, and the aqueous inorganic liquid reinforcing agent is: .
Furthermore, a sealing layer is bonded above the concrete layer 1, and a water permeable concrete layer 2, a broken stone cushion layer 3, a water filtering geotextile 4 and a sand gravel cushion layer 5 are sequentially arranged below the concrete layer 1.
Further, the thickness of the concrete layer 1 is 50mm, the particle size of the natural aggregate is 4-6mm, the thickness of the water-permeable concrete layer 2 is 150mm, the thickness of the gravel cushion layer 3 is 300mm, the water-filtering geotextile 4 is two layers, and the thickness of the gravel cushion layer 5 is 300 mm.
Further, the sealing layer is colorless and transparent, the water permeable concrete layer 2 is C25 large-aperture strong water permeable concrete, and the mass per unit area of the water-filtering geotextile 4 is 200g/m2The plain soil 6 below the gravel bed 5 is compacted with a compaction factor greater than or equal to 0.97.
Example 2
A construction process for quickly washing a bone exposing material permeable concrete pavement comprises the following steps:
1. preparing concrete: according to 530: 150: 78: 3, weighing granite or basalt, P.O42.5 cement, water and a water-based inorganic liquid reinforcing agent for later use; putting granite or basalt and P.O42.5 cement into a free fall type stirrer, dry-stirring for 1min, mixing an inorganic liquid reinforcing agent with water before extraction, adding the mixture into the stirrer by 2-3 times, and properly prolonging mechanical stirring time for uniformly stirring the materials, wherein the stirring time is controlled to be 120-300 s;
2. tamping the plain soil 6, wherein the tamping coefficient is 0.98, and then sequentially laying a 300mm thick sand gravel cushion 5 and two layers of 200g/m sand gravel cushions from bottom to top 24 of water-filtering geotextile, 3 of a macadam cushion layer with the thickness of 300mm, 2 of a C25 large-aperture strong permeable concrete layer with the thickness of 150mm and 1 of a concrete layer with the thickness of 50 mm;
3. after the concrete layer 1 is laid, washing the surface of the concrete layer 1 by tap water, controlling the washing pressure within 5MPa, controlling the washing angle to be vertical to the concrete pavement, adjusting the water outlet shape of a high-pressure gun head to be dispersion linear, strictly prohibiting high-pressure single-strand direct washing, immediately covering and curing by a plastic film after the surface washing is finished, wherein the curing time is 7-15 days;
4. and after curing, joint cutting and joint filling are carried out on the expansion joint, the surface of the concrete layer 1 is washed clean, after the surface is completely dried, the surface is cured for 8 hours after being sprayed by using a sealant, wherein the sealant is a polypropylene-based polyurethane curing agent.
Example 3
A construction process for quickly washing a bone exposing material permeable concrete pavement comprises the following steps:
1. preparing concrete: according to 530: 150: 78: 3, weighing granite, P.O42.5 cement, water and a water-based inorganic liquid reinforcing agent for later use; putting granite and P.O42.5 cement into a stirrer, dry-stirring for 1min, mixing the inorganic liquid intensifier with the water before extraction, adding into the stirrer by 3 times, and totally controlling the stirring time to be 200 s;
2. tamping the plain soil 6, wherein the tamping coefficient is 0.98, and then sequentially laying a 300mm thick sand gravel cushion 5 and two layers of 200g/m sand gravel cushions from bottom to top 24 of water-filtering geotextile, 3 of a macadam cushion layer with the thickness of 300mm, 2 of a C25 large-aperture strong permeable concrete layer with the thickness of 150mm and 1 of a concrete layer with the thickness of 50 mm;
3. after the concrete layer 1 is laid, washing the surface of the concrete layer 1 by tap water, controlling the washing pressure within 5MPa, controlling the washing angle to be vertical to the concrete pavement, adjusting the water outlet shape of a high-pressure gun head to be dispersion linear, strictly prohibiting high-pressure single-strand direct washing, immediately covering and curing by a plastic film after the surface washing is finished, wherein the curing time is 15 days;
4. and after curing, joint cutting and joint filling are carried out on the expansion joint, the surface of the concrete layer 1 is washed clean, after the surface is completely dried, the surface is cured for 8 hours after being sprayed by using a sealant, wherein the sealant is a polypropylene-based polyurethane curing agent.
Example 4
A construction process for quickly washing a bone exposing material permeable concrete pavement comprises the following steps:
1. preparing concrete: according to 530: 150: 78, weighing granite, P.O42.5 cement and water for later use; putting granite and P.O42.5 cement into a stirrer, and dry-stirring for 1min, adding water into the stirrer for 3 times, wherein the stirring time is controlled to be 200 s;
2. tamping the plain soil 6, wherein the tamping coefficient is 0.98, and then sequentially laying a 300mm thick sand gravel cushion 5 and two layers of 200g/m sand gravel cushions from bottom to top 24 of water-filtering geotextile, 3 of a macadam cushion layer with the thickness of 300mm, 2 of a C25 large-aperture strong permeable concrete layer with the thickness of 150mm and 1 of a concrete layer with the thickness of 50 mm;
3. after the concrete layer 1 is laid, washing the surface of the concrete layer 1 by tap water, controlling the washing pressure within 5MPa, controlling the washing angle to be vertical to the concrete pavement, adjusting the water outlet shape of a high-pressure gun head to be dispersion linear, strictly prohibiting high-pressure single-strand direct washing, immediately covering and curing by a plastic film after the surface washing is finished, wherein the curing time is 15 days;
4. and after curing, joint cutting and joint filling are carried out on the expansion joint, the surface of the concrete layer 1 is washed clean, after the surface is completely dried, the surface is cured for 8 hours after being sprayed by using a sealant, wherein the sealant is a polypropylene-based polyurethane curing agent.
This example is different from example 3 in that: no aqueous inorganic liquid enhancer was used.
Example 5
A construction process for quickly washing a bone exposing material permeable concrete pavement comprises the following steps:
1. preparing concrete: according to 530: 150: 80: 1, weighing granite, P.O42.5 cement, water and a water-based inorganic liquid reinforcing agent for later use; putting granite and P.O42.5 cement into a stirrer, dry-stirring for 1min, mixing the inorganic liquid intensifier with the water before extraction, adding into the stirrer by 3 times, and totally controlling the stirring time to be 200 s;
2. tamping the plain soil 6, wherein the tamping coefficient is 0.98, and then sequentially laying a 300mm thick sand gravel cushion 5 and two layers of 200g/m sand gravel cushions from bottom to top 24 of water-filtering geotextile, 3 of a macadam cushion layer with the thickness of 300mm, 2 of a C25 large-aperture strong permeable concrete layer with the thickness of 150mm and 1 of a concrete layer with the thickness of 50 mm;
3. after the concrete layer 1 is laid, washing the surface of the concrete layer 1 by tap water, controlling the washing pressure within 5MPa, controlling the washing angle to be vertical to the concrete pavement, adjusting the water outlet shape of a high-pressure gun head to be dispersion linear, strictly prohibiting high-pressure single-strand direct washing, immediately covering and curing by a plastic film after the surface washing is finished, wherein the curing time is 15 days;
4. and after curing, joint cutting and joint filling are carried out on the expansion joint, the surface of the concrete layer 1 is washed clean, after the surface is completely dried, the surface is cured for 8 hours after being sprayed by using a sealant, wherein the sealant is a polypropylene-based polyurethane curing agent.
This example is different from example 3 in that: the concrete has different mass ratios of the components.
Example 6
A construction process for quickly washing a bone exposing material permeable concrete pavement comprises the following steps:
1. preparing concrete: according to 530: 150: 76: 5, weighing granite, P.O42.5 cement, water and a water-based inorganic liquid reinforcing agent for later use; putting granite and P.O42.5 cement into a stirrer, dry-stirring for 1min, mixing the inorganic liquid intensifier with the water before extraction, adding into the stirrer by 3 times, and totally controlling the stirring time to be 200 s;
2. ramming and compacting system for plain soil 6Counting 0.98, then sequentially paving a 300mm thick sand gravel cushion 5 and two layers of 200g/m sand gravel cushions from bottom to top 24 of water-filtering geotextile, 3 of a macadam cushion layer with the thickness of 300mm, 2 of a C25 large-aperture strong permeable concrete layer with the thickness of 150mm and 1 of a concrete layer with the thickness of 50 mm;
3. after the concrete layer 1 is laid, washing the surface of the concrete layer 1 by tap water, controlling the washing pressure within 5MPa, controlling the washing angle to be vertical to the concrete pavement, adjusting the water outlet shape of a high-pressure gun head to be dispersion linear, strictly prohibiting high-pressure single-strand direct washing, immediately covering and curing by a plastic film after the surface washing is finished, wherein the curing time is 15 days;
4. and after curing, joint cutting and joint filling are carried out on the expansion joint, the surface of the concrete layer 1 is washed clean, after the surface is completely dried, the surface is cured for 8 hours after being sprayed by using a sealant, wherein the sealant is a polypropylene-based polyurethane curing agent.
This example is different from example 3 in that: the concrete has different mass ratios of the components.
Example 7
A construction process for quickly washing a bone exposing material permeable concrete pavement comprises the following steps:
1. preparing concrete: according to 530: 150: 78: 3, weighing granite, P.O42.5 cement, water and a water-based inorganic liquid reinforcing agent for later use; putting granite and P.O42.5 cement into a stirrer, dry-stirring for 1min, mixing the inorganic liquid intensifier with the water before extraction, adding into the stirrer by 3 times, and totally controlling the stirring time to be 200 s;
2. tamping the plain soil 6, wherein the tamping coefficient is 0.98, and then sequentially laying a 300mm thick sand gravel cushion 5 and two layers of 200g/m sand gravel cushions from bottom to top 24 of water-filtering geotextile, 3 of a macadam cushion layer with the thickness of 300mm, 2 of a C25 large-aperture strong permeable concrete layer with the thickness of 150mm and 1 of a concrete layer with the thickness of 50 mm;
3. after the concrete layer 1 is laid, washing the surface of the concrete layer 1 by tap water, wherein the washing pressure is 6MPa, obliquely washing the concrete pavement, adjusting the water outlet shape of a high-pressure gun head to be dispersion linearity, strictly prohibiting high-pressure single-strand direct washing, immediately covering and curing by using a plastic film after the surface washing is finished, and the curing time is 15 days;
4. and after curing, joint cutting and joint filling are carried out on the expansion joint, the surface of the concrete layer 1 is washed clean, after the surface is completely dried, the surface is cured for 8 hours after being sprayed by using a sealant, wherein the sealant is a polypropylene-based polyurethane curing agent.
This example is different from example 3 in that: the flushing mode is different.
The exposed aggregate permeable concrete pavements prepared in examples 3-7 were subjected to tests of compressive strength and flexural strength, and the results are as follows:
| compressive strength (MPa) | Flexural strength (MPa) | Appearance of the product | |
| Example 3 | 25 | 5.5 | The aggregate of the surface layer is completely exposed without falling off of particles |
| Example 4 | 19 | 3.5 | The aggregate of the surface layer is completely exposed, and a large amount of particles fall off |
| Example 5 | 22 | 4.5 | Surface layer aggregateExposed and a small amount of particles fall off |
| Example 6 | 26 | 5.9 | The aggregate of the surface layer is partially exposed without falling off of particles |
| Example 7 | 25 | 5.5 | The aggregate of the surface layer is completely exposed, and a small amount of particles fall off |
As can be seen from the above table, the compressive strength and the flexural strength of the exposed aggregate permeable concrete pavement prepared in the example 3 are significantly better than those of the examples 4 and 5, and are equivalent to those of the examples 6 and 7, and the exposed aggregate is moderate, presents uniform and beautiful color, has no particle shedding and has high durability.
The aggregate on the surface of the exposed aggregate permeable concrete pavement prepared in the embodiment 4 is completely exposed, the aggregate is not firmly combined with the cement, a large amount of particles fall off, and the appearance is mottled and uneven; the aggregate on the surface of the exposed aggregate permeable concrete pavement prepared in the embodiment 5 is completely exposed, the aggregate is not firmly combined with cement, a small amount of particles fall off, and the appearance is not uniform; the aggregate part on the surface of the exposed aggregate permeable concrete pavement prepared in the embodiment 6 is exposed, so that the whole pavement is subjected to color difference, the appearance of the pavement is influenced, and the effects of garden beautification and design cannot be achieved; the aggregate on the surface of the exposed aggregate pervious concrete pavement prepared in the example 7 is completely exposed, the bonding with the cement is not firm, a small amount of particles fall off, and the appearance is not uniform.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The quick-flushing exposed aggregate permeable concrete pavement is characterized by comprising a concrete layer, wherein the concrete layer is prepared from the following components in parts by weight: natural aggregate, a cementing material, water and an aqueous inorganic liquid reinforcing agent.
2. The quick-flushing bare aggregate permeable concrete pavement according to claim 1, characterized in that the concrete layer comprises the following components in parts by weight: natural aggregate: and (3) cementing materials: water: aqueous inorganic liquid strengthening agent 530: 150: 78: 2.6 to 3.3.
3. The quick-washing bare aggregate permeable concrete pavement according to claim 1, wherein the natural aggregate is one or more of granite, basalt, perlite and dolomite, the cementing material is cement, and the aqueous inorganic liquid reinforcing agent is: the water-based inorganic liquid reinforcing agent for the colored pervious concrete.
4. The quick-washing bare aggregate permeable concrete pavement according to claim 1, wherein a sealing layer is bonded above the concrete layer, and a permeable concrete layer, a gravel cushion layer, a water-filtering geotextile and a sand gravel cushion layer are sequentially arranged below the concrete layer.
5. The quick-washing exposed aggregate permeable concrete pavement according to claim 4, wherein the thickness of the concrete layer is 50-100 mm, the particle size of natural aggregate is 4-6mm, the thickness of the permeable concrete layer is 100-150 mm, the thickness of a gravel cushion layer is 200-300 mm, the thickness of a draining geotextile is two layers, and the thickness of a gravel cushion layer is 200-300 mm.
6. The rapid-flushing bare aggregate permeable concrete pavement according to claim 4, wherein the sealing layer is colorless and transparent, and the permeable concrete layer is a C25 macroporous holeThe unit area mass of the water-filtering geotextile is 200g/m2And the plain soil below the sand gravel cushion layer is compacted, and the compaction coefficient is greater than or equal to 0.97.
7. The construction process for rapidly washing the exposed aggregate permeable concrete pavement according to any one of claims 1 to 6, which comprises the following steps:
1) preparing concrete: preparing natural aggregate, a cementing material, water and a water-based inorganic liquid reinforcing agent into concrete for later use;
2) after the plain soil is tamped, a gravel stone cushion layer, two layers of water-filtering geotextiles, a gravel cushion layer, a permeable concrete layer and a concrete layer are sequentially laid from bottom to top;
3) after the concrete layer is laid, carrying out surface washing, and immediately carrying out covering maintenance by using a plastic film after the surface washing is finished;
4) and after the maintenance is finished, joint cutting is carried out on the expansion joint, joints are filled, and finally the concrete layer is sealed by using the sealing layer.
8. The construction process for rapidly washing the exposed aggregate permeable concrete pavement according to claim 7, wherein in the step 1), the concrete preparation process comprises the following steps:
11) weighing natural aggregate, a cementing material, water and a water-based inorganic liquid reinforcing agent according to the weight ratio for later use;
12) and (3) putting the natural aggregate and the cementing material into a stirrer, dry-stirring for 1min, mixing the inorganic liquid reinforcing agent with the inorganic liquid reinforcing agent before water extraction, adding the mixture into the stirrer for 2-3 times, and totally controlling the stirring time to be 120-300 s.
9. The construction process for rapidly washing the exposed aggregate permeable concrete pavement according to claim 7, wherein in the step 3), the surface washing mode is as follows: after the concrete layer is laid, before the concrete is initially set, the surface of the concrete layer is flushed by water, the flushing pressure is controlled within 5MPa, the flushing angle is vertical to the concrete pavement, and the water outlet shape of the high-pressure gun head is adjusted to be dispersion linearity.
10. The construction process of the rapid-flushing bare aggregate permeable concrete pavement according to claim 7, wherein in the step 4), the surface of the concrete layer is flushed clean before the concrete layer is sealed, after the surface is completely dried, the concrete layer is cured for 8 hours after being sprayed with a sealant, and the sealant is particularly a dipropylene polyurethane curing agent.
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| CN111996858A (en) * | 2020-07-22 | 2020-11-27 | 湖南砼艺市政工程建设有限公司 | Construction process of pavement structure of exposed aggregate ecological water-permeable concrete structure |
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| CN114369979A (en) * | 2022-01-10 | 2022-04-19 | 中交一公局第八工程有限公司 | Exposed aggregate permeable concrete pavement and construction process thereof |
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| CN116290659A (en) * | 2023-03-06 | 2023-06-23 | 湖北路城建设科技有限公司 | Washing-free exposed bone material artistic floor and paving method thereof |
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| CN115217012A (en) * | 2021-04-19 | 2022-10-21 | 沪望海绵城市科技有限公司 | Sponge city permeable ground and pouring method thereof |
| CN113605168A (en) * | 2021-08-04 | 2021-11-05 | 黄鹏宇 | Old cement concrete adds spreads and reforms transform structure |
| CN114369979A (en) * | 2022-01-10 | 2022-04-19 | 中交一公局第八工程有限公司 | Exposed aggregate permeable concrete pavement and construction process thereof |
| CN116290659A (en) * | 2023-03-06 | 2023-06-23 | 湖北路城建设科技有限公司 | Washing-free exposed bone material artistic floor and paving method thereof |
| CN116290659B (en) * | 2023-03-06 | 2024-05-10 | 湖北路城建设科技有限公司 | Washing-free exposed bone material artistic floor and paving method thereof |
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