WO2008126956A1

WO2008126956A1 - Block having a load divergence function and manufacturing and road constructing method for the same

Info

Publication number: WO2008126956A1
Application number: PCT/KR2007/002152
Authority: WO
Inventors: Heung Sik Yu; Seong Kyun Jin
Original assignee: Heung Sik Yu; Seong Kyun Jin
Priority date: 2007-04-12
Filing date: 2007-05-02
Publication date: 2008-10-23
Also published as: KR100889252B1; KR20080092584A

Abstract

The invention provides blocks made of certain material, having a load divergence function, and construction method of these blocks that each adjacent sides is formed with grooved and projecting parts that corresponds to each other but located on the opposite side. In this invention, grooved and projecting parts are formed at each adjacent sides of the blocks made of certain material to interlock each adjacent blocks. Each block units are interlinked to each other to effectively withstand and disperse a given load by bending strength in a slab-like function on a soft ground. Therefore, the structure of the interlinked blocks prevents partial subsidence of the road surface.

Description

BLOCK HAVING A LOAD DIVERGENCE FUNCTION AND MANUFACTURING AND ROAD CONSTRUCTING METHOD FOR THE SAME

Technical Field

[1] The invention is about blocks having a load divergence function, block manufacturing method and road construction method. In this invention, grooved and projecting parts are formed at the opposite but corresponding sides of the blocks made of certain material to interlock each adjacent blocks. The blocks are interlinked and thus used to form roads. Background Art

[2] Unlike the past, with the improvements of lifestyels and increasing concerns about the environment the beauty aspect of the building structures as been emphasized as well as the environmentally friendly issue. In addition, there are increased concern for more advanced and improved road pavements demanding both the safety and beauty aspect in highways, bus lanes, bicycle lanes, and school zones. Among these paving methods concrete slab, asphalt, and block paving are popular. For the above methods, cement and asphalt are one of the well used materials for paving as well as the building structures.

[3] Referring to the Figure 1 of the conventional pavements, the over all process of the construction is; leveling and compaction of the subgrade/ground followed by compaction of the gravel subbase (SlOO), pave concrete blocks on a prepared subbase (S200), leveling job with fixations of blocks or gravel using cement mortar (S300), preparing sand bed on a leveled surface and fill the gaps between the adjacent blocks with sand (S400).

[4] As in detail, the initial step of the conventional road construction method involves leveling and compaction of the subgrade/ground followed by the construction of the subbase. Secondly, blocks are paved on the prepared subbase followed by leveling of the blocks by filling the gaps of the adjacent blocks using cement mortar. Moreover, as mentioned previously, sand bed is formed on the leveled or prepared surface followed by filling the gaps of the adjacent blocks using sand to complete road pavement.

[5] However, with the conventional method, the cost involved with cement mortar application, long term construction period, and vibration and noise due to transverse gaps between the blocks that account for bad drivability accounts for inadequate for road construction purpose. Thus, it is rather widely used for sidewalks, however, the adverse weather condition such as frost and frequent heavy load traffic access accounts for further damage to the pavement and severe deformation.

[6] Concrete slab pavement, in particular, which is one of the widely used conventional method withstands most of the applied traffic load by bending strength. Thus, as described in Figure 2, there is a risk of shear fracture involved on a poor ground condition. The asphalt on the other hand disperse the load to the lower layers but poor performance is expected on a ground condition with partial subsidence. Each blocks withstands load for the conventional block pavements, however, partial subsidence of the ground results in deformation of the pavement. Therefore, conventional block pavements are mainly used on sidewalks and pedestrian access roads. Disclosure of Invention Technical Problem

[7] Therefore, the invention is purposed to provide solutions to the above problems faced by the conventional methods. Since each block units are interlinked to each other to effectively withstand a given load in a slab-like function on a soft ground. Therefore, the structure of the interlinked blocks prevents partial subsidence of the road surface. The invention provides blocks having a load divergence function, block manufacturing method, and road construction method utilizing these blocks.

[8] Furthermore, the purpose of the invention is to prevent partial subsidence on soft ground foundation and without the necessity of subbase blocks can be formed on the leveled ground since the blocks interlink to each other. Unlike the conventional methods mortar sand is not required to fill the gaps of the adjacent block units, thus, providing simple paving. Technical Solution

[9] As a means of achieving the above purpose the invention provides blocks having a load divergence function is made of certain material, and each adjacent sides of the blocks formed with grooved and projecting parts that corresponds with each other while located in the opposite sides.

[10] Manufacturing method of concrete beam blocks having a load divergence function comprising: agitating step of mixing concrete based constituents in a mix batch; block forming step by placing the agitated mix material into a steel mold cast and compacting the material by using vibrator or bars to avoid voids; surface treating step, which involves texturing the surface of the block to make the surface rough and increase tire traction or friction; and curing step of the textured blocks and producing step of the blocks in certain size. [11] Other features of the invention comprising: screening step of removing the impurities from the soil; agitating step of mixing the materials in a mixing batch; soil rock block forming step in which the agitated mix material is placed in a steel mold cast and being compacted by using vibrator or bars to avoid voids; surface treating step, which involves texturing the surface of the soil rock based block in order to make the surface even and increase adhesion with asphalt surface layer; and curing and producing step in a certain size. [12] Furthermore, one of the features of the invention involves preparation step by leveling the ground utilizing grader, compact the ground utilizing roller, and applying

5 to 10cm to the compacted ground; [13] block laying step that involves installation of soil rock based blocks by interlinking the units; [14] spray step that involves spray certain amount of emulsion on the surface of the soil based blocks; [15] pave asphalt surface layer in order to complete road paving method using soil based blocks having a load divergence function. [16] In addition, other features of the invention involves block paving step of applying certain thickness of sand on the leveled ground and interlink grooved with projecting parts at each adjacent sides of the blocks; [17] ^aPply asphalt surface or concrete slab surface on the blocks in order to complete road paving. [18] On the other hand, another feature of the invention involves preparation step of forming subbase on a leveled ground; [19] insert projecting part of the block to the grooved part of the other block and repeating the same procedure for the other blocks to fix the blocks in place to form a block pavement on a leveled subbase.

Advantageous Effects

[20] In this invention, grooved and projecting parts are formed at each adjacent sides of the blocks made of certain material to interlock each adjacent blocks. Therefore, roads built with these interlink blocks effectively withstand a given load in a slab-like function on a soft ground as it promotes bending strength.

[21] According to the invention, this block pavement prevent partial subsidence on soft ground foundation and without the necessity of subbase blocks can be formed on the leveled ground since the blocks interlink to each other. Unlike the conventional methods mortar sand is not required to fill the gaps of the adjacent block units, thus, providing simple paving.

Brief Description of the Drawings [22] These and other aspects and advantages of the present invention will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which: [23] Figure 1 illustrates the conventional road construction method.

[24] Figure 2 illustrates subsidence of roads paved with the conventional methods.

[25] Figure 3 illustrates invented blocks having a load divergence function.

[26] Figure 4 illustrates the invented concrete beam block having a load divergence function.

[27] Figure 5 illustrates a construction utilizing the invented concrete beam blocks.

[28] Figure 6 illustrates another invented block having a load divergence function.

[29] Figure 7 illustrates a flowchart of the manufacturing method of the concrete beam block. [30] Figure 8 illustrates a flowchart of the manufacturing method of the soil rock based block. [31] Figure 9 illustrates the comparison between the conventional paving method and invented block paving method. [32] Figure 10 illustrates another comparison between the conventional paving method and invented block paving method. [33] Figure 11 illustrates another comparison between the conventional paving method and invented block paving method.

Best Mode for Carrying Out the Invention [34] The following explanations are detailed illustration of the attached drawings of the invention. [35] As described in Figure 3, grooved part (2) is formed on one side of the block (1) and projecting part (3) is formed on the opposite side of the block made of certain material. [36] The invented blocks can be produced utilizing different materials e.g. concrete, soil, soil rock component, synthetic rock, wood, polyester, polymer, ceramiς rubber, steel, metal, polyurethane, chemi-petrolium compound, and plastic. [37] On the other hand, invented block (1) is utilized to pave roads by interlinking grooved part (2) of block (IA) with projecting part (3) of block (IB).

[38] The following outlines example of the invention in detail. [39] Embodiment 1 [40] As illustrated in Figure 4, the grooved part (2) of the block (1) is shaped in alphabet "S" shape and reverse letter "S" shape is on the corresponding side. In other words, semi-ciicular shape of No.l projecting part (5) is formed on the upper section of grooved part (2) and No.1 grooved part (6) located below in a semi-citeular shape. Moreover, semi-ciieular shape of No.2 grooved part (7) is formed on the upper section of projecting part (3) and No.2 projecting part (8) located below in a semi-ciicular shape

[41] Here, like what has been indicated in Table 1, the dimensions of the above block (1) varies depending on the strength requirement of the roads.

[42] Table 1 [Table 1] [Table ] Dimension of the soil based block

[43] On the other hand, illustrations of the road construction method of the invention states that 5 to lOαn sand bed (10) is spread on a prepared subgrade (9) and the projecting part (3) of block (IB) interlinks with grooved part (2) of block (IA) followed by paving asphalt (4) or concrete (4) on the prepared block layer. In other words, since there are continual interlink of the projecting part (3) and grooved part (2) the whole pavement has a interlock structure.

[44] Embodiment 2

[45] As illustrated in Figure 6, female block (12) with combining groove (11) in an equilateral triangle shape located in the lower part of the block; male block (14) with combining projecting (13) in the opposite but corresponding side to the female block (13) with combining groove (11) is produced.

[46] On the other hand, illustrations of the road construction method of the invention states that the male block (14) interlinks with female block (12) while these blocks are laid on a prepared subbase layer. In other words, the combining projecting (13) of the male block (14) fits into the combining groove (11) of the female block (12) followed by combining groove (11) of the same female block (12) interlinking with the combining projecting (13) of the other male block (14) for the completion of the paving job.

[47]

[48] The following manufacturing method is about the above invention.

[49] As described in one of the examples outlined regarding Figure 7 of the block manufacturing method utilizing concrete material, certain mix ratio of concrete material is being agitated in a mixing batch (SI l). Moreover, block forming step (S 12) is followed by the mixing step (Sl 1) where blocks made of concrete are produced by placing the agitated mix material into a steel mold cast and compacting the material by using vibrator or bars to avoid voids.

[50]

[51] *In addition, followed by the forming step (S 12) comes the surface treating step

(S 13), which involves texturing the surface of the concrete based block to make the surface rough or provide grooving texture to increase tire traction.

[52] Furthermore, followed by the surface texturing step (S13) curing step (S14) is proceeded in order to curing the textured blocks for producing blocks in certain sizes.

[53] The blocks produced from block forming step (S 12) is as outlined in Figure 4 where the sides have alphabet "S" shaped figure or distinguishable by female or male nature.

[54] Therefore, one of the sample mix ratio of producing the invented blocks is; 13 weight% cement, 25 weight% cement, 54 weight% gravel, 8 weight% water (since concrete ready mix ratio is 1:2:4) or 9 weight% cement, 25 weight% sand, 58 weight% gravel, 8 weight% water (since concrete ready mix ratio is 1:3:6). The blocks as outlined in Figure 4 have alphabet "S" figure or like outlined in Figure 6, distinguishable by female or male nature by which is produced by placing the agitated mix material into a steel mold cast and compacting the material by using vibrator or bars to avoid voids.

[55] In addition, texturing is provided to the surface in order to make the surface rough or provide grooving texture to increase tire traction. Furthermore, followed by the surface texturing step, curing is proceeded under the sun, however, under an extreme heat enough water has to be sprayed in order to prevent rapid drying and cracking thus to increase strength of the block followed by producing in certain sizes such as length 40cm x width 40αn x height 30αn.

[56] Another example of the invented blocks is block made of soil rock material and as outlined in Figure 8, it includes screening step(S20) of the impurities from the soil to be used for blocks made of soil rock based material. The agitating step (S21) is followed by the screening step (S20). Completion of the agitating step (S21) leads to soil rock block forming step (S22) in which the agitated mix material is placed in a steel mold cast and being compacted by using vibrator or bars to avoid voids. In addition, completion of the block forming step (S22) leads to surface treating step (S23), which involves texturing the surface of the soil rock based block in order to make the surface rough and increase adhesion with asphalt surface layer.

[57] Furthermore, completion of the surface treating step (S23) leads to curing step (S24) in which the blocks are cured to become a final product sized in certain dimension.

[58] The blocks produced from soil rock block forming step (S22) is as outlined in Figure

4 where the sides have alphabet "S" shaped figure or distinguishable by female or male nature.

[59] In addition, the above soil rock agitating step (S21) includes soil rock mix ratio of 5 weight% cement, 85.85 weight% soil, 0.15 weight% emulsion, and 9weight% water.

[60] Therefore, the manufacturing method of the block made of soil and rock component includes separating impurities such as roots, plastiς and rock size above 20mm in diameter from the mix material. Add 5 weight% cement, 85.85 weight% soil, 0.15weight% emulsion, and 9 weight% water into the mixing batch for well agitation. In addition, the blocks produced from the mix of soil rock component is mixed as outlined in Figure 4 where the sides have alphabet "S" shaped figure or Figure 6, by placing the mix material into a steel cast mold shaped to produce female or male blocks and compacting the material utilizing bars or vibrators in order to minimize voids.

[61] Treating the surface of the soil rock block of female and male shape involves texturing the surface of the soil rock based block in order to make the surface even and increase adhesion with asphalt surface layer.

[62] Furthermore, followed by the surface texturing step, curing step is proceeded under the sun, however, under an extreme heat FS emulsion of 0.5^/m^! has to be sprayed in order to prevent rapid drying and cracking thus to increase strength of the block followed by producing in certain sizes such as length 40αnxwidth 40αnxheight 30cm.

[63] Furthermore, one of the construction method of the invention utilizing soil rock block involves leveling the ground utilizing grader, compact the ground by roller, and applying 5 to 10cm to the compacted ground followed by paving a layer of soil rock block and spraying 0.5^/m² of emulsion on the surface of the block layer to aid bonding of the block surface and asphalt. During this procedure, placing Pet Mat soon after applying emulsion prior to asphalt course gives quality workmanship.

[64] The size and material of the blocks may differ as outlined in Table 2, depending on the usage or construction method such as construction for airway runway, highway, industrial road with frequent access of heavy load vehicles that require high strength or block surface without having to pave asphalt surface on the block layer. However, soil based bricks made of cement and emulsion can be used for the sub-layer of asphalt surface.

[65] Table 2 [Table 2] [Table ]

[66] In addition, considering Table 2, for rural roads and small streets block sizes may be length 25 cm x width 25cmxheight 20cm or smaller, however, high strength concrete material is recommended when using the blocks for the surface course of roads. The use of soil based blocks made of cement and emulsion is economical for subsurface layers.

[67] Moreover, the block layers do not sink or subside before the block unit damaged.

Also, the interlinking structure of the invented blocks prevent partial subsidence.

[68] Particularly, as described in Figures. 9 and 10 the conventional concrete slab (rigid) or asphalt pavements were ineffective on soft grounds due to its danger involved with fracture. However, the invention outrides the conventional concrete slab (rigid) or asphalt pavements (flexible) in aspects such as durability, safety, and recycling of waste, which is costly in most of the times once the pavement has been damaged. As outlined in Figure 11 , if the road built by the invented blocks become damaged due to natural disasters the blocks gets scattered, however, easy to relocate via leveling the ground.

[69] Therefore, if the ground softens due to increased water level during rainy season the road built by the invented blocks withstands concentrated load by its slab and beam structure and uniformly disperse in a large area to resist road sink or subsidence.

[70] Furthermore, the conventional method had no options but to excavate the road for in- frastructural additions such as telecommunication, sewer, gas, and electricity. However, as illustrated in Figure 3 the invented blocks can be relocated and reassemble to restore the road to its original state with minimized cost and waste.

[71] In addition, the invented block pavement provides all year round construction nonetheless winter season and in adverse conditions such as low areas, clayey soil ground, soft ground, and sites with limited construction time allowed. Industrial Applicability

[72] Unlike the past, with the improvements of lifestyles and increasing concerns about the environment the beauty aspect of the building structures as been emphasized as well as the environmentally friendly issue. In addition, there are increased concern for more advanced and improved road pavements demanding both the safety and beauty aspect in highways, bus lanes, bicycle lanes, and school zones. Among these paving methods concrete slab, asphalt, and block paving are popular. For the above methods, cement and asphalt are one of the well used materials for paving as well as the building structures.

Claims

[I] Blocks having a load divergence function is made of certain material, and each adjacent sides of the blocks formed with grooved and projecting parts that corresponds with each other while located in the opposite sides.

[2] The blocks according to claim 1 , wherein blocks consist of concrete mix material. [3] The blocks according to claim 1, wherein blocks consist of soil rock mix material.

[4] The blocks according to claim 1 , wherein blocks consist of ceramic material.

[5] The blocks according to claim 1, wherein blocks consist of rubber material.

[6] The blocks according to claim 1, wherein blocks consist of plastic mix material.

[7] The blocks according to claim 1, wherein blocks consist of polyurethane mix material.

[8] The blocks according to claim 1, wherein blocks consist of polymer material.

[9] The blocks according to claim 1, wherein blocks consist of petro-chemical compound material. [10] The blocks according to claim 1, wherein blocks comprising semi-ciicular shape of a first projecting part formed on the upper section of grooved part and a first grooved part located below in a semi-ciicular shape, and semi-ciieular shape of a second grooved part formed on the upper section of projecting part and a second projecting part located below in a semi-ciicular shape.

[I I] The blocks according to claim 1, wherein blocks comprising a female block formed with certain shape of interlinking grooved part and a male block formed with certain shape of interlinking projecting part that corresponds or fits into the female interlinking grooved part.

[12] Manufacturing method of concrete beam blocks having a load divergence function comprising: agitating step of mixing concrete based constituents in a mix batch; block forming step by placing the agitated mix material into a steel mold cast and compacting the material by using vibrator or bars to avoid voids; surface treating step, which involves texturing the surface of the block to make the surface rough and increase tire traction or friction; and curing step of the textured blocks and producing step of the blocks in certain size. [13] The method according to daim 12, wherein shape of blocks cast out of steel mold in the block forming step being shaped alphabet letter "S" on the sides, which the block. [14] The method according to claim 12, wherein shape of blocks cast out of steel mold in the block forming step being shaped in female and male figure. [15] The method according to claim 12, wherein concret mix ratio being introduced in the agitating step of mixing concrete consist of 13 weight% cement, 25 weight% sand, 58 weight% gravel, and 8 weight% water. [16] The method according to claim 12, wherein concret mix ratio being introduced in the agitating step of mixing concrete consist of 9 weight% cement, 25 weight% sand, 58 weight% gravel, and 8 weight% water. [17] Manufacturing method of soil rock blocks having a load divergence function comprising: screening step of removing the impurities from the soil; agitating step of mixing the materials in a mixing batch; soil rock block forming step in which the agitated mix material is placed in a steel mold cast and being compacted by using vibrator or bars to avoid voids; surface treating step, which involves texturing the surface of the soil rock based block in order to make the surface even and increase adhesion with asphalt surface layer; and curing and producing step in a certain size. [18] The method according to claim 17, wherein shape of blocks cast out of steel mold in the soil rock block forming step being shaped alphabet letter "S" on the sides. [19] The method according to claim 17, wherein shape of blocks cast out of steel mold in the soil rock block forming step being shaped in female and male figure. [20] The method according to claim 17, wherein concret mix ratio being introduced in the soil rock agitating step of mixing concrete consist of 5 weight% cement,

85.85 weight% soil, 0.15 weight% emulsion, and 9 weight% water. [21] Road construction method of soil rock blocks having a load divergence function comprising: preparing step of leveling the ground utilizing grader, compact the ground utilizing roller, and applying 5 to 10cm to the compacted ground; block laying step that involves installation of a layer of soil rock based blocks by interlinking the units; spray step that involves spraying certain amount of emulsion on the surface of the soil rock based blocks; and, paving asphalt surface layer in order to complete road construction.

[22] The method according to claim 21, wherein thickness of sand applying in the preparing step of leveling the ground is 5 to 10cm.

[23] The method according to claim 21, wherein quantity of emulsion spraying in the emulsion spraying step is 0.5^/m².

[24] Road construction method of concrete beam blocks having a load divergence function comprising: block paving step of applying certain thickness of sand on the leveled ground and interlink grooved with projecting parts at each adjacent sides of the blocks; and, complete road paving step applying asphalt surface or concrete slab surface on the block layer.

[25] The method according to claim 24, wherein sand bed is 5 to 10cm.

[26] Road construction method of concrete beam blocks having a load divergence function comprising: preparation step of forming subbase on a leveled ground; and, block paving step inserting interlinking projecting part of the block to the interlinking grooved part of the other block and repeating the same procedure for the other blocks to fix the blocks in place to form a block pavement on a leveled subbase.