KR100701925B1 - The method of constructing pavment capable of premeating water with waste cementconcrete and elastic chip - Google Patents

Abstract

The present invention is a method for constructing a permeable elastic pavement (floor) by using a cement chip that is recycled or discarded cement concrete and discarded rubber or urethane rubber, the crusher on a conventional roadbed layer (soil layer) or auxiliary foundation layer Construction method of permeable flooring using recycled cement concrete and elastic chip with excellent shear resistance, impact resistance, and water permeability made in the order of first layer, waste cement concrete grinding layer, reinforcement elastic floor layer, and surface elastic floor layer.

Description

Construction method of permeable flooring using recycled cement concrete and elastic chips {THE METHOD OF CONSTRUCTING PAVMENT CAPABLE OF PREMEATING WATER WITH WASTE CEMENTCONCRETE AND ELASTIC CHIP}

1 is a cross-sectional view showing a laminated state of the elastic flooring material according to the present invention

The present invention relates to a method for constructing a permeable floor using regenerated cement concrete and elastic chips. Specifically, a ground stone auxiliary layer is packed with a crushed stone foundation layer and a waste cement concrete layer, and an elastic chip, tar, and synthetic resin are mixed thereon. The present invention relates to a method for constructing a water-permeable flooring material that cures a reinforcing elastic floor layer and then forms a surface elastic floor layer mixed with an elastic chip and a binder thereon.

Recently, the amount of cement concrete aggregate waste caused by reconstruction of apartments, high-rise buildings at end of life, discarded sidewalk blocks, cement concrete driveways and sidewalks has been tremendous. Due to the diversification of waste tires, industrial materials, building materials and daily necessities, the amount of synthetic rubber wastes including synthetic resins is also increasing day by day.

Such wastes are not easily decomposed after decades of landfilling, and the soil is contaminated and loses its function as a recycling system. Organic wastes are secondary wastes that cause secondary pollution even when incinerated. Problems are serious and are the immediate challenges of mankind living today.

Cement concrete and aggregates that are discarded as part of the solution of such problems are used for reclamation of landfills, crushed or finely powdered, and added together with new aggregates or sands for concrete mortar or cement mortar and used as auxiliary layer of road. Or it is used as a packing material of the auxiliary base of the pavement construction, but the consumption is very small and the efficiency of the use is also very low.

The waste tires are used as buffers by attaching them to the edges of ships, dock walls of ships or docks and road structures as they are, and use them as buffer members. It is used as an elastic packaging material for coats, etc. For more efficient use, the waste tires are cut to a certain size and immersed in dilute hydrogen peroxide solution at high temperature and high pressure to remove the vulcanized rubber properties and to give plasticity. It may also be regenerated to impart the properties of rubber).

In addition, synthetic rubbers are also used or recycled in the same manner as above, but are used in very small and low value added fields.

To specifically illustrate the conventional use of such wastes, according to Korean Patent Publication No. 10-0441861 (published date: 2002.09.16), the name of the invention is "a waste tire, a pitcher using waste urethane color rubber chips. The construction method of the elastic packaging material, such a construction method of the permeable elastic packaging material using a rubber chip laminated in the order of the filter layer (sand), the prima layer, the lower support layer, the upper elastic layer on the roadbed (raw) layer As a construction method, the preconditions for the construction of such a packaging material should be preceded by water permeability, durability, elasticity, etc. However, in the construction method, a prima layer is formed on the filter layer. It is used for exterior surface blocking of metal structures in civil constructions or added to roads that are formed for the purpose, or to be waterproof or airtight. In the method of forming plastic forehead layer is difficult to expect the water-permeable.

In addition, in terms of durability, the elastic packaging material to be installed in the roadway, sidewalk, square, etc. should be preceded by excellent impact strength and shear strength, and in order to construct like this, even if the supporting layer or the upper elastic layer is well designed, It is only. For example, in the asphalt or elastic pavement method, the base layer (laid layer) or the base layer laminated on the auxiliary base layer should be designed to withstand the impact or shear force to minimize plastic deformation due to external adverse conditions. Durability can be extended. Particularly, in the foundation layer, the use of aggregates also requires the use of aggregates, which are greatly influenced by the selection of size, thereby ensuring excellent shear force due to the mechanical effect of the engagement. Nevertheless, this construction method lacks the foundation layer that can secure the shear force required as the first priority in asphalt or such an elastic pavement construction.

Another conventional technique is a pitcher cone, which is thickly coated with high viscosity rubberized asphalt, polyurethane resin, and synthetic resin on gravel or crushed stone, laid on the base layer, and then compacted with a thermal roller, thereby coating the coating layers coated on the gravel or crushed stone. The formed pavement layer is formed by the construction method is excellent in permeability for a certain period of time during the initial stage of construction and well over time, but after time passes gravel or crushed stone, the adhesion between each other weak and the gravel or crushed stone does not absorb the external impact surface layer Peeling from and once the phenomena occur, there is a problem that the peeling phenomenon is accelerated exponentially, and eventually fell into a construction method that is specified.

In addition, there is a method of placing an elastic packaging material after finishing concrete or ascon construction by the conventional method, but this takes a long time to cure concrete, which leads to a long air and a distinction between the concrete layer and the elastic packaging material. This is prominent and the permeability is also unexpected construction method.

The present invention reduces the construction cost by recycling waste resources such as waste tires, waste polyurethane resin products, as well as waste concrete such as peconcrete (cement), thereby reducing air pollution, reducing damage to environmental pollution, and having water permeability. In addition to the eco-friendly construction method that can utilize the function of the soil recycling system, in addition to selecting the aggregate standard of the crushed stone foundation functionally, it is possible to secure the crushed foundation layer that can exhibit the best elasticity and impact resistance, It is filled in the space) to improve the shear resistance of the base layer and the strong adhesion with the elastic layer to reinforce the phenomena of the elastic layer, as well as to secure permeability by selecting the size of the elastic chip and selecting the appropriate binder. In providing a construction method of the flooring having a.

The present invention improves the problems of conventional elastic packaging materials (floors) or permeable elastic packaging materials (floors) by using recycled (circulating) cement concrete or recycled (circulating) aggregates and elastic chips, and excellent permeability, shear resistance, and impact resistance. The present invention relates to a method of constructing an elastic packaging material (floor material), which will be described in detail. A crushed foundation layer (1) on a raw material layer (furrow layer) and an auxiliary base layer basically applied to an existing asphalt pavement or elastic packaging material (floor material) will be described. ), Crushed concrete cement layer (2), reinforcement elastic floor layer (3), surface elastic floor layer (4) in the order of the crusher on the ordinary auxiliary base layer (coarse stone or crushed stone, a layer compacted by sand mixing) The superlayer is laminated.

Here, the crushed foundation layer is a crushed foundation layer composed of 80 wt% of crushed stone around 12 mm, 15 wt% of crushed stone around 5 mm, the remainder being small crushed stone around 2 mm, or mixed with 5 wt% of coarse sand to make it homogeneous. The layer laminated by compacting is a cement cement ground layer, and this layer is a layer of compacted cement concrete crushed to be uniformly distributed from 6 mm to fine particles, which may be referred to as a kind of crosslinked layer connecting the crushed stone foundation layer and the elastic layer.

In addition, it is an elastic flooring material which is mixed and cured rubber chips, tars, and curable polyurethane adhesives (binders) that are disposed of waste rubber of reinforcement elastic bottom layer laminated on waste cement concrete crushing layer, in particular, tires, synthetic rubber products, and polyurethane products. The mixing ratio consists of 50 ~ 60wt% of elastic rubber chip particle size in the range of 5 ~ 6mm, 8 ~ 10wt% of polyurethane binder and tar, and the surface elastic bottom layer is 85 ~ 90wt% of polyurethane chip of 3mm ~ 4mm. It is a surface layer elastic flooring that is laid using ~ 15wt% curable polyurethane resin adhesive.

In the above construction method, the difference in the size of the crushed stone and the content of each of the crushed foundation layers may be regarded as essential conditions for improving the shear resistance after compaction.

More specifically, the largest particle size that can be filled in the unit gap generated when the crushed stone around 12 mm is engaged with the strong compaction ranges from 5 mm to 6 mm, and the large particles of 12 mm and 5 mm particles are filled. The largest particles that can be filled in the gap generated in the state of engagement are small particles of 2 mm or coarse sand, and the crushed foundation layer formed as described above has the best shear resistance.

Particles in the waste cement or recycled aggregate layer can be embedded at least in the uneven surface of the crushed foundation layer and absorb the tar in the reinforcing elastic bottom layer to solidify and thus have a horizontal support of the layer. There is a need for particles that are uniformly distributed up to microparticles that can absorb large amounts of tar at mm and solidify.

In addition, the reinforcement elastic bottom layer has a composition ratio of 50 to 60 wt% of rubber chips or polyurethane chips and 8 to 10 wt% of curable urethane binders as described above. Different materials have different physical and chemical properties, and the behavior and compatibility of materials after use are very different. Especially, tar has excellent adhesion and osmotic curing properties, so most of the amount penetrates into the cement cement ground to harden the cement concrete ground. By improving the shear strength of the whole layer by giving horizontal support of the second layer, and giving plasticity to the rubber chip or polyurethane chip in the early stage, it is embedded in the fine aggregate of the cement concrete crushing layer to form the uneven surface during compaction. Prevents delamination between layers and improves tar adhesion As it is possible to improve the adhesion between the layers. In addition, the curable polyurethane adhesive is adhered to the rubber chip or polyurethane chip with a strong adhesive force. In addition, if a large amount of polyurethane adhesive is used here, the gap (space) generated between the chip and the chip can be filled, so that the water permeability can not be expected and prevents the aggregation of the burning adhesive.

Also related to water permeability is that the size of the chip particles must be uniform, and the permeability worsens when small or micro particles are included. In summary, it is recommended to use rubber chips of uniform size and to use as little adhesive as possible.

Therefore, the size of the rubber or polyurethane chip in the reinforced elastic bottom layer is limited to the size range of 5 ~ 6㎜ and the polyurethane binder is also limited to a small amount of 8 ~ 10wt%.

In the surface elastic bottom layer, 85 ~ 90wt% of particles and 10 ~ 15wt% of curable polyurethane binder with uniformity of 3mm ~ 4mm of rubber or polyurethane chip are used. It should be less than the reinforcement elastic bottom layer, and the amount of adhesive used is similar to or slightly less than that of the reinforcement elastic bottom layer when the elastic chip and the adhesive are used only.

The construction method of each layer consisting of the above structure is that the crushed foundation layer is installed on the ground layer (the sub-layer) or the auxiliary base layer, laid in a thickness of 3 to 5 cm and compacted by a wheel roller or other means, and the cement concrete crushed material thereon. And then roller compaction, followed by mixing and heating a mixture of tar, rubber or polyurethane particles, and curable polyurethane adhesive, and then pouring and curing the roller and then mixing rubber or polyurethane particles with polyurethane binder. After laying, hardening by voltage compaction, construction is completed.

The present invention by constructing a permeable floor using waste rubber including waste tires, waste urethane resins, waste cement, concrete and recycled aggregates to reduce the cost of construction as well as to reduce the damage of environmental pollution and to have permeability to the soil recycling system As an eco-friendly construction method that can make use of the function, it is possible to secure excellent shear resistance by maximizing the interlocking effect by efficiently selecting the size and usage of large crushed stone, medium crushed stone, and small crushed stone particles in the crushed foundation layer. The interlocking effect between the layers and the strong adhesive force further improves the shear resistance, so that the phenomena between the layers and the layers do not occur, thereby preventing warpage or rupture and increasing resistance to plastic deformation. In addition, it can be said to be a method of constructing a permeable flooring material using recycled concrete and elastic chips having water permeability by forming a gap between the elastic particles and the particles by appropriate selection of the elastic particles in the elastic layer and limitation of the adhesive.

Claims (1)

Forming a crushed foundation layer by laying a homogeneous mixture composed of 12 mm crushed stone (80 wt%), 5 mm crushed stone (15 wt%), and 2 mm crushed stone or 5 wt% coarse sand on a conventional soil layer (soil layer) or auxiliary base layer. Step and forming waste cement concrete crushing layer by laying cement compact from 6mm to fine grain on the foundation of crushing stone and 50 ~ 60wt rubber chip or polyurethane chip with particle diameter of 5 ~ 6mm on cement crushing layer %, Curable urethane adhesive 8 ~ 10wt% After mixing the mixture consisting of tar with the remainder of the tar, forming it and hardening it by voltage compaction and forming a reinforced elastic bottom layer and uniformity of 3mm ~ 4mm in diameter on the reinforced elastic bottom layer 85 to 90 wt% of rubber or polyurethane chip with particle size and a homogeneous mixture containing 10 to 15 wt% of curable polyurethane adhesive If reproduction of cement-concrete construction and method of water-permeable resilient flooring using the chip and forming a resilient bottom layer.

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