WO2008098475A1

WO2008098475A1 - Porous cement concrete pavement and method for construction thereof

Info

Publication number: WO2008098475A1
Application number: PCT/CN2008/000272
Authority: WO
Inventors: Zhijian Yi
Original assignee: Zhijian Yi
Priority date: 2007-02-14
Filing date: 2008-02-02
Publication date: 2008-08-21

Abstract

A porous cement concrete pavement and a method for the construction thereof are provided. The porous cement concrete pavement comprises a pavement layer (3) formed by laying a porous cement concrete on a base course (1), and a surface layer (4) thereon. The material of the surface layer (4) in the state of liquid flows into voids (31) of the top surface of the porous cement concrete pavement layer (3), without filling with all voids (31), and is firmly combined with the top surface of the porous cement concrete pavement layer (3) after it is solidified. The porous cement concrete pavement requires a low construction and maintenance cost, andhas low temperature-sensitivity.

Description

Porous cement concrete pavement and construction method thereof

The invention belongs to the field of building structure and road engineering, and particularly relates to a porous cement concrete pavement and a construction method thereof. Background technique

In the prior art, asphalt pavement or concrete pavement is generally used for roads and bridges.

Asphalt pavement refers to the general term for pavement with asphalt as a binder. Asphalt pavement is a pavement structure with a certain thickness of asphalt mixture as a surface layer on a flexible base layer and a semi-rigid base layer. Compared with gravel pavement, this kind of pavement has greatly improved comfort, strength and stability. Compared with cement concrete pavement, asphalt pavement surface is smooth and seamless, with low vibration, low noise, fast open traffic, easy maintenance, suitable for pavement construction, and is an important structural form of pavement in China.

The disadvantage of asphalt pavement is its high temperature sensitivity. In summer, the strength decreases. If the control is not good, the road surface will be soft and oily or the shearing will be broken. When the asphalt material becomes brittle at low temperature, the road surface will be cracked; therefore, the asphalt pavement has poor stability. At the same time, the cost of asphalt pavement is relatively high.

The cost of cement concrete pavement construction is doubled compared to asphalt pavement. Comparison of maintenance cost of two kinds of pavements on expressways Although asphalt pavements are more convenient and faster than concrete pavements, their maintenance costs are directly proportional to the construction costs. When the asphalt pavement is partially repaired or paved, the required machinery is needed. More and more, the asphalt mixing plant, paver and road roller must be used. The local repair and maintenance cost is about 4 times to 5 times higher than the new construction cost. The partial replacement of the cement pavement can be carried out using a three-roller unit or a small machine. The mechanical equipment is small and light, and the maintenance cost of the partial repair is 2 to 3 times the construction cost. Although the asphalt pavement maintenance has a quick opening, it is easier to make a thin layer than the cement pavement, and it does not need to consider the joint crack prevention. However, in China's current severe conditions such as green, aggregate, machinery, and maintenance construction, its maintenance costs are roughly It is about 3 times that of cement pavement.

The same design level means that the pavement structure design of the idle speed asphalt and cement pavement should be adapted to the corresponding traffic volume and overload requirements. The same construction technology level means that the construction of both pavements should be carried out by a large paver. The cement pavement uses a large mixing plant and a slipform paver, and the asphalt pavement uses an asphalt mixing plant, an asphalt paver and its associated road roller. Under such "equal" conditions, the service life of cement concrete pavement is twice as long as that of asphalt pavement. At the same level of flatness, the asphalt pavement is more comfortable and less noisy than the cement pavement. However, due to the road surface conditions, the vehicle consumes a large amount of power and increases emissions, which not only wastes fuel, but also adversely affects the environment. The economics of cement pavement operations are better than asphalt pavements.

The cement concrete pavement adapts to the requirements of large-capacity, high speed, large traffic flow, etc., which are necessary for the development of transportation. At the same time, it has many advantages such as high strength, good stability, long service life and low maintenance and maintenance costs. However, concrete is a non-homogeneous brittle material composed of aggregates, cement, water and some gases remaining in it. Under certain temperature and humidity conditions, the concrete hardens and produces volumetric deformation due to the materials that make up the concrete. The deformation is inconsistent, and the initial stress is generated by mutual restraint, resulting in fine cracks between the aggregate and the cement stone bonding surface or between the cement stone itself. These cracks are irregular and inconsistent, and may develop under the influence of external factors. Macro cracks. The noise is also a cement mixture; a big problem with the road surface.

In order to solve the above problems, polymer cement concrete has appeared, the cost is lower than that of the asphalt pavement, and the pavement strength is also improved, but the material itself has no change compared with the cement concrete, and the construction process has not changed, and the pavement is formed. The stiffness is still large, the surface flatness is poor, and the driving comfort is poor. Compared with the cement concrete pavement, the noise is not significantly reduced.

Therefore, there is a need for a road surface, low paving and maintenance costs, good material stability, good drainage, anti-skid and noise reduction performance, and economical and driving comfort. Summary of the invention

In view of the above, the object of the present invention is to provide a porous cement concrete pavement with low cost of construction and maintenance, good material stability, good drainage, anti-skid and noise reduction performance, and economical and driving comfort. Good, with good technical, economic and social benefits.

In the porous cement concrete pavement of the present invention, the porous concrete paving forms a pavement on the base layer, and the porous cement concrete pavement has a surface layer, and the surface layer material flows into the pores of the surface of the porous cement concrete pavement in a liquid state, and is solidified and porous cement The surface of the concrete pavement is firmly bonded and does not fill the pores.

Further, the surface layer material is composed of the following components in parts by weight - polymer 100 parts

Filling 0-500 parts;

Further, the surface layer material is composed of the following components in parts by weight:

100 parts of polymer Filling 120-280 parts;

Further, the porous cement concrete is a porous cement concrete formed of intermittent graded or single graded gravel, and is composed of the following components by weight:

Cement 15~5 parts

Crushed stone 120-220 parts

Sand 0-50 parts

Water 6-18 parts;

Further, a waterproof bonding layer is disposed between the porous cement concrete pavement and the base layer, and the waterproof bonding layer is firmly bonded to the porous cement concrete pavement and the base layer;

Further, the waterproof bonding layer material is composed of the following components in parts by weight - 1 part of polymer

Filling 0-15 parts;

Filling 1~4 parts;

Further, the polymer of the surface layer and the water-repellent bonding layer is any one of a polymer resin, a polymer powder or a polymer emulsion or a mixture thereof;

Further, an appropriate amount of a diluent, a solvent, a water or an auxiliary agent is added to the polymer as needed; further, the filler is an active filler, an inert filler or a mixture of an active filler and an inert filler; further, the active filler is cement and Fly ash, inert fillers are calcium carbonate, talc and quartz sand;

Further, the surface layer material further adds 1 to 30 parts by weight of the pigment per 100 parts by weight of the polymer;

Further, the base layer is a newly-built stable and unstable base layer, or an original cement concrete pavement, an asphalt pavement, and a bridge deck.

Another object of the present invention is to provide a method of constructing a porous cement concrete pavement comprising the following construction steps:

a. Prepare and stir evenly into porous cement concrete;

b. Spread the porous cement concrete on the base layer to form the pavement, leveling, tapping, and curing to the strength More than 75% of the strength of the porous cement concrete design;

c. Prepare the surface layer material, spray the liquid surface layer material on the porous cement concrete pavement, and ensure the amount of the surface layer material to flow into the pores of the porous cement concrete pavement surface by its own gravity after spraying to the road surface, and not fill the aggregate The pores between the surface layer material and the surface of the porous cement concrete pavement form a surface layer after solidification.

Further, the waterproof adhesive layer material is prepared. In step b, the waterproof adhesive layer material is spread on the base layer before the porous concrete is paved, and the waterproof adhesive layer is formed, and the porous cement concrete is spread on the waterproof adhesive layer; The porous cement concrete is spread on the base layer by a paver and formed into a road surface at one time; further, the surface layer may be constructed one or more times and layered.

The beneficial effects of the invention are: the porous cement concrete pavement of the invention and the construction method thereof, flowing into the polymer surface layer on the surface of the porous cement concrete, the pavement paving and the maintenance cost are low, the material stability is good, the temperature sensitivity is low, Good drainage, anti-skid and noise-reducing performance, and economical and driving comfort are better, with better technical, economic and social benefits; using porous cement concrete with high strength and deformation ability compared with solid concrete The advantages of small shrinkage and good crack resistance, reducing the overall weight of the road surface, excellent pavement road performance, reducing the thickness of the road surface, bringing significant economy, convenient drawing, simple and quick construction; between the porous cement concrete pavement and the base layer The waterproof adhesive layer structure is provided to prevent leakage, and is integrated with the road surface to form a pavement structure with common force, and has the advantages of high strength, large deformation, good water resistance, anti-aging and corrosion resistance, and greatly prolongs the road surface. Use cycle; waterproof bonding layer and surface layer materials are all polymerized , Having good adhesion, low cost and easily obtained advantages; adding a pigment within the polymer surface layer to form a color road, the entire road stereoscopic, easy to distinguish the different properties of the road. The construction method of the porous cement concrete pavement of the invention is simple and quick in construction, short in cycle and low in construction cost. DRAWINGS

The invention is further described below in conjunction with the drawings and embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS detailed description

The drawing is a schematic view of the pavement structure of the present invention, as shown in the figure: Porous cement concrete paving forms a pavement 3 on the base layer 1, and a waterproof bonding layer 2 is disposed between the porous cement concrete pavement 3 and the base layer 1, and the waterproof bonding layer 2 and The porous cement concrete pavement 3 and the base layer 1 are firmly bonded. The porous cement concrete pavement 3 has a surface layer 4 which flows into the surface pores 31 of the porous cement concrete pavement 3, after solidification The surface of the porous cement concrete pavement 3 is firmly bonded and does not fill the pores 31.

The ingredients of the porous cement concrete, the surface layer, the waterproof bonding layer and the construction method thereof will be described below by way of specific examples. The polymer resin in the examples is an epoxy resin, and the polymer powder is polyvinyl chloride; the polymer emulsion is a styrene-acrylic emulsion, a pure acrylate emulsion, a styrene-butadiene emulsion, and an epoxy emulsion. Embodiment 1 In the table of the embodiment, the weight ratio of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer in the porous cement concrete pavement is prepared.

The construction method of the porous cement concrete pavement of the embodiment includes the following construction steps: a. Prepared according to the given weight parts of the above table and stirred uniformly into a porous cement concrete;

b. Prepare the waterproof bonding layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spread the waterproof bonding layer material on the original cement pavement 1 to form waterproof and sticky After the layer 2, the porous concrete is paved on the waterproof bonding layer 2 by a paver, and the pavement 3 is formed at one time, and the strength is up to 75% of the strength of the porous concrete design;

c Prepare the surface layer material by weight, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray the liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material can be guaranteed to be sprayed onto the road surface The pores 31 flowing into the surface of the porous cement concrete pavement by their own gravity are not filled with the pores 31 between the aggregates 32; the surface layer material is solidified and firmly bonded to the surface of the porous cement concrete pavement to form the surface layer 4. Embodiment 2 In the table of the embodiment, the weight ratio of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer in the porous cement concrete pavement is prepared. Cement concrete material cement gravel (aggregate) sand water pavement

Quantity (tons) 0.3 1.8 0.3 0.1 Material Polymer Resin Filler (Cement) Quantity (Tons) 1 1

Pigment (inorganic iron material, polymer resin, filler (cement)

Surface red) layer

Quantity (kg) 100 80 10 The construction method of the porous cement concrete pavement of this embodiment includes the following construction procedures: a. Prepared according to the given weight parts of the above table and stirred uniformly into porous cement concrete;

b. Prepare the waterproof bonding layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spread the waterproof bonding layer material on the original asphalt pavement 1 to form waterproof and sticky After the layer 2, the porous concrete is paved on the waterproof bonding layer 2 by a paver, and the pavement 3 is formed at one time, and the strength is up to 75% of the strength of the porous concrete design;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material is guaranteed to be sprayed to the pavement After that, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material is solidified and firmly bonded to the surface of the porous cement concrete pavement to form the surface layer 4. Embodiment 3 In the table of the embodiment, the weight ratio of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer in the porous cement concrete pavement is prepared.

b. Prepare the waterproof bonding layer material according to the weight of the above table, and add appropriate dilution in the polymer as needed. Agent, solvent, water or auxiliary agent; paving the waterproof bonding layer material on the original bridge surface 1, forming the waterproof bonding layer 2, paving the porous concrete on the waterproof bonding layer 2 through the paver, forming once Pavement 3, curing to a strength of more than 75% of the strength of the porous concrete design;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material is guaranteed to be sprayed to the pavement After that, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material solidifies and firmly adheres to the surface of the porous cement concrete pavement to form the surface layer 4. Embodiment 4 In the table of the embodiment, the weight ratio of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer in the porous cement concrete pavement is prepared.

The construction method of the porous cement concrete pavement of the present embodiment includes the following construction procedures - a. Prepared according to the given weight parts of the above table and stirred uniformly into porous cement concrete;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material is guaranteed to be sprayed to the pavement After that, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material solidifies and firmly adheres to the surface of the porous cement concrete pavement to form the surface layer 4. Embodiment 5 In the table of the embodiment, the proportions of the various materials of the porous cement concrete pavement, the polymer waterproof adhesive layer and the polymer surface layer are prepared in the porous cement concrete pavement.

The construction method of the porous cement concrete pavement of the embodiment includes the following construction steps: a. According to the given weight parts of the above table, the mixture is prepared and stirred into a porous cement concrete;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray the liquid surface layer material on the porous cement concrete pavement 1 and ensure the amount of surface layer material is sprayed to After the road surface, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material solidifies and firmly adheres to the surface of the porous cement concrete pavement to form the surface layer 4. Embodiment 6 In the table of the embodiment, the weight ratio of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer in the porous cement concrete pavement is prepared. Cement concrete material cement gravel (aggregate) sand water pavement

Quantity (ton) 0.45 2.2 0.5 0.18 Waterproof material Polymer emulsion Filler (cement)

Bonding

Number of layers (tons) 1 15 Surface material Polymer emulsion filler (cement) Pigment (inorganic iron red)

b. Prepare the waterproof bonding layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spread the waterproof bonding layer material on the newly formed stable base layer 1 to form waterproof and sticky After the layer 2, the porous concrete is paved on the waterproof bonding layer 2 by a paver, and the pavement 3 is formed at one time, and the strength is up to 75% of the strength of the porous concrete design;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material is guaranteed to be sprayed to the pavement After that, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material is solidified and firmly bonded to the surface of the porous cement concrete pavement to form the surface layer 4. Embodiment 7 In the table of the embodiment, the weight ratio of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer in the porous cement concrete pavement is prepared.

b. Prepare the waterproof adhesive layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spread the waterproof adhesive layer material on the newly built unsteady base layer 1 to form waterproof After the bonding layer 2, the porous concrete is paved on the waterproof bonding layer 2 by a paver, and the pavement 3 is formed in one time, and is cured to a strength of more than 75% of the design strength of the porous concrete;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent to the polymer as needed, Solvent, water or auxiliary agent; spraying liquid surface layer material on porous cement concrete pavement, the amount of surface layer material is guaranteed to flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity after spraying to the road surface, and is not filled with aggregate The pores 31 between 32; the surface layer material is solidified and firmly bonded to the surface of the porous cement concrete pavement to form the surface layer 4. Embodiment 8 In the table of the present embodiment, the weight ratio of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer in the porous cement concrete pavement is prepared.

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material is guaranteed to be sprayed to the pavement After that, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material is solidified and firmly bonded to the surface of the porous cement concrete pavement to form the surface layer 4.

Embodiment 9 In the table of the present embodiment, the parts by weight of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer are prepared in the porous cement concrete pavement. Pavement cement concrete material cement gravel (aggregate) sand water Quantity (ton) 0.15 1.2 0.1 0.06 Waterproof material polymer emulsion filler (cement + talcum powder)

Bonding

Number of layers (tons) 1 4

Pigment (no material polymer emulsion filler (cement + talcum powder)

Surface machine iron red) layer

Quantity (kg) 100 280 20

The construction method of the porous cement concrete pavement of the embodiment includes the following construction steps:

a. Prepared according to the given weight of the above table and stirred evenly into porous cement concrete;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray the liquid surface layer material on the porous cement mixed road surface, the amount of surface layer material is guaranteed After spraying onto the road surface, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material is solidified and firmly adhered to the surface of the porous cement concrete pavement to form the surface layer 4 . Embodiment 10 In the table of the present embodiment, the parts by weight of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer are prepared in the porous cement concrete pavement.

The construction method of the porous cement concrete pavement of the embodiment includes the following construction steps: b. Prepare the waterproof bonding layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spread the waterproof bonding layer material on the original bridge surface 1 to form waterproof and sticky After the layer 2, the porous concrete is paved on the waterproof bonding layer 2 by a paver, and the pavement 3 is formed in one time, and is cured to a strength of more than 75% of the concrete design strength;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material is guaranteed to be sprayed to the pavement After that, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material solidifies and firmly adheres to the surface of the porous cement concrete pavement to form the surface layer 4. Embodiment 11 In the table of the present embodiment, the parts by weight of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer are prepared in the porous cement concrete pavement.

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material is guaranteed to be sprayed to the pavement After that, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material is solidified and the porous cement concrete 72 The surface of the pavement is firmly bonded to form the surface layer 4. Embodiment 12 In the table of the present embodiment, the parts by weight of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer are prepared in the porous cement concrete pavement.

b. Prepare the waterproof adhesive layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spread the waterproof adhesive layer material on the newly built unsteady base layer 1 to form waterproof After the bonding layer 2, the porous concrete is paved on the waterproof bonding layer 2 by a paver, and the pavement 3 is formed at one time, and the strength is up to 75% of the strength of the porous concrete design;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material is guaranteed to be sprayed to the pavement After that, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material solidifies and firmly adheres to the surface of the porous cement concrete pavement to form the surface layer 4.

Embodiment 13 In the table of the present embodiment, the parts by weight of various materials of the porous cement concrete, the polymer waterproof bonding layer and the polymer surface layer are prepared in the porous cement concrete pavement. Cement concrete material cement gravel (aggregate) sand water pavement

Quantity (ton) 0.15 1.2 0.1 0.06 Waterproof material Polymer emulsion Filler (calcium carbonate)

Bonding

Number of layers (tons) 1 10 Surface material Polymer emulsion filler (calcium carbonate) Pigment (inorganic iron red)

The construction method and method of the porous cement concrete pavement of the present embodiment include the following construction steps: a. Prepared according to the given weight parts of the above table and stirred uniformly into a porous cement concrete;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray liquid surface layer material on the porous cement concrete pavement, the amount of surface layer material is guaranteed to be sprayed to the pavement After that, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material is solidified and firmly bonded to the surface of the porous cement concrete pavement to form the surface layer 4. Embodiment 14 The table of this embodiment is a weight ratio of various materials for preparing a porous cement concrete, a polymer waterproof bonding layer and a polymer surface layer in a porous cement concrete pavement.

b. Prepare the waterproof bonding layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spread the waterproof bonding layer material on the original steel bridge deck 1 to form waterproof After the bonding layer 2, the porous concrete is paved on the waterproof bonding layer 2 by a paver, and the pavement 3 is formed in one time, and is cured to a strength of more than 75% of the design strength of the porous concrete;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent to the polymer as needed, Solvent, water or auxiliary agent; spraying liquid surface layer material on porous cement concrete pavement, the amount of surface layer material is guaranteed to flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity after spraying to the road surface, and is not filled with aggregate The pores 31 between 32; the surface layer material is solidified and firmly bonded to the surface of the porous cement concrete pavement to form the surface layer 4. In the fifteenth embodiment, the table in the embodiment is a weight ratio of various materials of the porous cement concrete pavement, the polymer waterproof adhesive layer and the polymer surface layer in the porous cement concrete pavement.

b. Prepare the waterproof bonding layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spread the waterproof bonding layer material on the original cement pavement to form waterproof bonding After layer 2, the porous concrete is paved on the waterproof adhesive layer 2 by a paver, and the pavement 3 is formed in one time, and the strength is up to 75% of the strength of the porous concrete design;

c Prepare the surface layer material according to the weight of the above table, add appropriate amount of diluent, solvent, water or auxiliary agent to the polymer as needed; spray the liquid surface layer material on the porous cement? Kunming concrete road surface, the amount of surface layer material is guaranteed After spraying onto the road surface, it can flow into the pores 31 of the surface of the porous cement concrete pavement by its own gravity, and does not fill the pores 31 between the aggregates 32; the surface layer material is solidified and firmly adhered to the surface of the porous cement concrete pavement to form the surface layer 4 . The above examples are merely illustrative of the present invention and are not intended to limit the scope of the present invention. The above types of resins, powders and emulsions are all practically applied in the above examples, and of course, other polymers having similar or identical properties may be used instead. Various types of fillers can be used in combination within a given range to achieve the object of the invention. The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be Modifications or equivalents are intended to be included within the scope of the appended claims.

Claims

Claim

A porous cement concrete pavement, wherein a porous cement concrete forms a pavement (3) on a base layer (1), characterized in that: the porous cement concrete pavement (3) has a surface layer (4), the surface layer ( 4) When the material is in liquid state, it flows into the porous concrete pavement (3) surface pore (31). After solidification, it adheres firmly to the surface of the porous cement concrete pavement (3) and does not fill the pores (31).

The porous cement concrete pavement according to claim 1, wherein the surface layer material is composed of the following components in parts by weight:

Polymer 100 parts

Fill 0-500 parts.

The porous cement concrete pavement according to claim 2, wherein: the surface layer material is composed of the following components in parts by weight - polymer 100 parts

Fill 120-280 parts.

The porous cement concrete pavement according to any one of claims 1 to 3, wherein: the porous cement concrete is a porous cement concrete formed by intermittent grade or single grade gravel, and is divided into the following by weight; Composition - 15^15 parts of cement

Crushed stone 120-220 parts

Sand 0-50 parts

Water 6-18 parts.

The porous cement concrete pavement according to any one of claims 1 to 3, characterized in that: a waterproof bonding layer (2) is disposed between the porous cement concrete pavement (3) and the base layer (1). The waterproof bonding layer (2) is firmly bonded to the porous cement concrete pavement (3) and the base layer (1).

The porous cement concrete pavement according to claim 4, characterized in that: a waterproof adhesive layer (2) is disposed between the porous cement concrete pavement (3) and the base layer (1), and the waterproof adhesive layer ( 2) Firmly bonded to the porous cement concrete pavement G) and the base layer (1).

7. The porous cement concrete pavement according to claim 5, wherein: the waterproof sticky The layering material consists of the following components by weight - 1 part of polymer

Fill 0-15 pieces.

The porous cement concrete pavement according to claim 6, wherein the waterproof adhesive layer material is composed of the following components in parts by weight:

Polymer 1 part

Fill 0-15 pieces.

The porous cement concrete pavement according to claim 7 or 8, wherein the water-repellent bonding layer material is composed of the following components in parts by weight:

Polymer 1 part

Filling 1_ serving

The porous cement concrete pavement according to claim 9, wherein the polymer of the surface layer and the water-repellent bonding layer is any one of a polymer resin, a polymer powder or a polymer emulsion or a mixture thereof.

The porous cement concrete pavement according to claim 10, wherein: the polymer is added with an appropriate amount of a diluent, a solvent, water or an auxiliary agent as needed.

The porous cement concrete pavement according to claim 11, wherein the filler is an active filler, an inert filler or a mixture of an active filler and an inert filler.

The porous cement concrete pavement according to claim 12, wherein the active filler is cement and fly ash, and the inert filler is calcium carbonate, talc and quartz sand.

The porous cement concrete pavement according to claim 13, wherein: the surface layer material further adds 1 to 30 pigments per part by weight of the polymer.

The porous cement concrete pavement according to claim 14, wherein the base layer (1) is a newly-built stable and unstable base layer, or an original cement concrete pavement, an asphalt pavement, and a bridge deck.

16. A method for constructing a porous cement concrete pavement, comprising: the following construction process: a. preparing and stirring uniformly into a porous cement concrete; b. Spread the porous cement concrete on the base layer (1) to form the road surface (3), leveling, tapping, and curing until the strength reaches 75% of the design strength of the porous cement concrete;

c. Preparing the surface layer material, spraying the liquid surface layer material on the porous cement concrete pavement, and the amount of the surface layer material is ensured to be able to flow into the pores (31) of the surface of the porous cement concrete pavement by its own gravity after being sprayed onto the road surface, and is not filled up. The pores (31) between the aggregates (32); the surface layer material is solidified and firmly bonded to the surface of the porous cement concrete pavement to form a surface layer (4).

The method for constructing a porous cement concrete pavement according to claim 16, wherein: the waterproof adhesive layer material is prepared, and in step b, the waterproof adhesive layer material is spread on the base layer before paving the porous concrete, 72 After the waterproof bonding layer (2) is formed within an hour, the porous concrete is spread on the waterproof bonding layer (2).

The method of constructing a porous cement concrete pavement according to claim 16 or 17, wherein the porous concrete is spread on a base layer by a paver, and the pavement (3) is formed at one time.

The method of constructing a porous cement concrete pavement according to claim 18, wherein the surface layer (4) can be constructed one or more times and layered.