KR100794223B1 - Side walk and road pavement composition using pyroclast and the pavement preparing method thereof - Google Patents

Abstract

A road pavement composition comprising pyroclast as a main component and a paving method using the composition are provided to impart high strength, high density, an air purification function, good durability, and a natural texture to pavement. A paving method using a road pavement composition containing pyroclast as a main component includes the steps of: screening pyroclast, wherein if pavement thickness is less than 15 cm, the screened pyroclast having a maximum aggregate dimension of 25 mm or smaller is used, and if pavement thickness is more than 15 cm, the screened pyroclast having a maximum aggregate dimension of 40 mm or smaller is used; mixing the pyroclast with 5-20wt%, based on the weight of the pyroclast, of cement and 1-10wt%, based on the weight of the pyroclast, of slaked lime; thereto adding 15-30wt%, based on the weight of the mixture of pyroclast, cement, and slaked lime, of water to obtain a pyroclast composition; casting the pyroclast composition onto a road(10) or auxiliary base layer(20) in a thickness of 10-30 cm, and tamping the composition to provide a maximum dry density of 95% or more; and performing surface treatment and curing.

Description

Side paving and road pavement composition using pyroclast and the pavement preparing method

Figure 1 Volcanic cladding road pavement cross section

2 is a conceptual diagram of the atmospheric purification system

3 conceptual diagram of photocatalytic reaction principle

4 is a conceptual diagram of nitrogen oxide removal test

5 NOx removal efficiency graph

<Detailed Description of Drawings>

10: roadbed

20: auxiliary base

30: substrate

40: surface reinforcing material

50: coarse aggregate

60 titanium dioxide (TiO ₂ ) particles

70: volcanic debris aggregate

80: volcanic debris fine aggregate

90: Volcanic chain crust composition cured body

100: sunlight

110: nitrogen oxide concentration detection tube

120: acrylic chamber

130: mixed air

140: Volcanic debris composition block test body

Recently, more and more cases of soil pavement such as parks, walkways, and ruins by using environmentally friendly soil pavement methods using soil away from concrete or asphalt are increasing.

The advantage of the earth paving method is that the soil, which is a raw material, can be easily obtained on site, has no fading due to surface wear, and has a unique color and texture. As the basic characteristics of the soil are far-infrared emission, excellent breathability, and low thermal conductivity, the walking frequency is gradually increased due to the merits of returning to the natural state through the weathering process, especially after a long time.

However, as a problem, firstly, there is no certain standard in strength, surface texture, color, permeability, and degree of freezing and thawing, so there are many inconveniences between the client and the contractor in the industry. In general, in the soil cement, organic matter contained in the soil inhibits the hydration reaction of cement. Humic acid and fulvic acid in organic matter react with calcium hydroxide produced by the hydration of cement to produce calcium humic acid, and this product destroys unhydrated cement particles to hydrate cement. The reaction is inhibited.

Therefore, conventional soy concrete has the disadvantage of low strength. In other words, by utilizing the unique characteristics of the soil, the strength as a packaging material is lowered, and when it is biased only in the strength of soil packaging, it shows the same texture as the concrete so that the original meaning of the soil packaging is colorless, and uniform quality control is difficult.

In particular, the method of adding crushed aggregates and fine aggregates, using a large amount of cement, and using soil as part of the pigment for the purpose of high strength has been proposed, but it is difficult to say that it is a soil pavement. will be.

The present invention is to solve the problems of the prior art, by using the characteristics of volcanic debris with a low content of organic matter by natural firing by volcanic activity, aiming at the high strength of the volcanic debris concrete, using the hydration reaction of cement and volcanic debris To produce ettringite (C ₃ A · 3CaSO ₄ · 32H ₂ O) and calcium hydroxide (Ca (OH) ₂ ) to induce a reduction in dry shrinkage and densification of structure by swelling, and to purify road pavement It is designed to have the texture and function as close to the natural state as possible with the natural color of red, but with excellent durability and, in particular, the purpose of pavement of economically cheap road.

In order to achieve the above object, the present invention derives an optimum blending ratio of volcanic chain sludge, cement, slaked lime or lime, and water, suggests an optimum blending ratio of volcanic chain sludge composition for road paving, and has a photocatalyst (TiO) to have an atmospheric purification function. ₂ ) It is characterized by providing environmentally friendly volcanic debris road pavement by reinforcing the composition and expressing on the pavement surface

The present invention relates to the production of road paving composition using environmentally friendly functional volcanic chain sulfide, which is composed of volcanic chain sulfide, cement, lime or lime powder, and water, which exhibits high strength and has a function of removing air pollutants by photocatalytic reaction.

In the present invention, in the functional road pavement composition using volcanic debris, the screening of volcanic debris is screened using a screen in one step (material selection and test) to perform material tests such as particle size, water content, compaction characteristics, and step 2 (material Mixing) is a dry primary mixing of volcanic chain snow composition (volcanic chain snow + cement + slaked lime) using equipment (PLANT mixing, Road Stabillizer, Grader) The 3rd step (laying and compaction) is the equipment (finisher, grader, backhoe, small bulldozer, manpower, macadam roller, vibratory roller, tire roller) to make the volcanic chain snow composition 10 to 30 cm thick on the top of the roadbed or subbase. 4 steps (surface treatment) is installed on the surface and compacted to more than 95% of the maximum dry density.In the case of crushed stone on the surface (anti-slip effect, beauty, strength, crack prevention) After the first compaction, the 5-25mm crushed aggregate is laid (5-20kg / ㎡), and the second compaction is performed. If the crushed stone is not laid, the surface hardener is used as a liquid hardener (water-soluble acrylic resin, water-soluble paraffin hardener, and lacquer oil (LAC). Step), and step 5 (curing) provides a road paving composition using volcanic chain snow, which is composed of a step of curing and curing traffic with a curing agent or curing agent for at least one day.

The road pavement composition of the present invention is a volcanic debris, 5 to 20% by weight of cement, and 1 to 10% by weight of lime, and a mixture of volcanic debris and cement and slaked lime. It is characterized by producing by mixing 15-30% by weight of water.

In another embodiment, the present invention, in the road paving composition, is mixed in a blending ratio of 700-1700kg / m3 of volcanic debris, 300-1300kg / m3 of stone powder, 300-500kg / m3 of cement, and 60-100kg / m3 of water. The present invention provides a method for producing a road pavement composition based on volcanic chain sewage, which is composed and produced by compaction, has an absorption rate of 4 to 6%, and has an atmospheric purification function.

The absorption rate may vary depending on the quality of the aggregate, but when the poor aggregate is used, the absorption may increase to 4 to 15%.

On the other hand, when the road paving composition using the volcanic chain sewage is poured into a mold and then the concrete is manufactured by vibration and pressure compaction, the compressive strength and the flexural strength may be high, and thus may be used for the production of sidewalk blocks or bricks for road paving.

In the case of enhancing the atmospheric purification function, there is provided a method for producing a road pavement composition mainly based on volcanic chain sills using anatase type titanium dioxide of 1 to 5% by weight of the cement used in combination with cement.

Pyroclast refers to the sediment that is interposed between rock and rock by Scoria, volcanic ash, and volcanic coal produced by volcanic activity, and it generates a large amount of stone in Jeju Island. As it is used for landfilling, its added value is very low. In the present invention, the photocatalytic action of the titanium dioxide (TiO ₂ ) component in the chemical composition of the volcanic chain sulfide, to enhance the durability by the pozzolanic reaction, to realize a natural color of red.

division SiO ₂ Al ₂ O ₃ Fe ₂ O ₃ CaO MgO TiO ₂ K ₂ O Na ₂ O P ₂ O MnO Volcanic debris 39.13 15.52 10.44 5.97 3.73 2.25 1.3 3.3 0.53 0.0 cement 23.25 5.43 3.35 61.94 2.77 0.0 2.15 1.75 0.0 0.0 Slaked lime 1.32 0.79 0.12 65.34 0.82 0.01 0.02 0.19 0.02 0.01

Table 1 shows the chemical composition of volcanic debris, cement and slaked lime. Volcanic chain sulfide has a significantly lower content of silica (SiO ₂ ) than ordinary clay and contains more calcium oxide (CaO). In particular, it contains 2% or more of titanium dioxide (TiO ₂ ) component to exhibit a strong photocatalyst function.

In addition, the particle size range of the volcanic debris is 15mm or less in the maximum aggregate size is 25mm or less, and when the packaging thickness is 15cm or more, it is possible to use a mixed aggregate having a maximum aggregate size of 40mm or less.

Stone powder is used for the purpose of reducing the absorption rate of volcanic chain siliceous composition and improving durability.

As cement, portland cement is usually used. In some cases, special cement such as blast furnace slag cement can be used. In order to increase durability, admixtures such as blast furnace slag powder, fly ash and concrete polymer may be mixed with cement. Cement is used for the purpose of bonding volcanic crust particles. That is, it is used for the purpose of utilizing the cement hardening effect | action by moisture.

Increasing CaO in the chemical composition of volcanic chain debris enhances the expandability, while increasing Al ₂ O ₃ has the property of increasing the roughness. In addition, a certain amount of calcined lime component is required in the chemical composition to control the coagulation of cement, to develop initial strength, and to reduce cracking.

Slaked lime has ground improvement effect by volcanic ash, chemical reaction and pozzolanic reaction, and is effective for increasing initial strength. Slaked lime is suitable for road pavement because of its excellent resistance to water damage and rutting. When water is added to slaked lime, it is combined with carbon dioxide and evaporated to form limestone (Ca (OH) ₂ + CO ₂ (in air) ⇒ CaCO ₃ + H ₂ O (evaporation)). That is, it is used for the purpose of pozzolanic reaction, securing the initial strength and preventing cracking by dry shrinkage.

Use clean water that you can drink. Water is used for the hydration of cement and slaked lime, and the optimum water content is in the range of 15 to 30% by weight, based on the weight of the mixture of volcanic broken sil and the mixture of cement and slaked lime.

The hardening principle of volcanic clam road pavement uses both hydraulic and plowability. Since hydraulics are cured by water and hydration reaction, cement type is typical, and hardening is hardening at the same time as evaporation of water in the air. Cement, a hydraulic material, and slaked lime, a hard material, are used.

The construction procedure of the road pavement construction method based on volcanic debris is sprinkled with dry cement on the subbase or top of the road in the range of 0.5kg / m2 or by cement slurry with water-cement ratio of 70 ~ 80%. It is good to promote.

The road paving method using volcanic clam sludge is to screen volcanic clam sludge using screen, but when the pavement thickness is less than 15cm, use volcanic clam waste selected to max. 25mm or less, and the maximum aggregate size is more than 15cm. Volcanic debris selected from 40 mm or less is used, 5 to 20 wt% of cement based on the weight of the volcanic debris and 1 to 10 wt% of slaked lime based on the weight of the volcanic debris, and the volcanic debris, cement and slaked lime. 15-30% by weight of water is added to the mixture of volcanic chain siliceous composition, 10-30 cm thick, placed on the upper surface of the roadbed or subbase layer and compacted to be 95% or more of the maximum dry density. In the case of crushed stone on the surface (anti-slip effect, aesthetics, strength improvement, crack prevention), as above, 95% or more after primary compaction, 5-25mm crushed aggregate laid ( 5-20kg / ㎡) and the second voltage compaction step, and if not crushed stone sprayed with a liquid hardener (water-soluble acrylic resin, water-soluble paraffin curing agent, lacquer emulsion (LAC), etc.) as a surface reinforcing material, and curing after surface treatment It is a step of opening traffic after curing with a curing cloth or curing agent for at least one day.

At this time, it is important to maintain moisture to sufficiently occur the hydration reaction.

In another embodiment of the present invention, instead of the volcanic chain sludge composition using the lime, 700-1700 kg / m3 of volcanic chain sludge selected according to the thickness of the road pavement, 300-1300 kg / m3 of stone powder, and 300-500 kg / cement. The methane and volcanic chain sewage composition mixed at a blending ratio of 60 to 100 kg / m 3 of water can be laid on the upper surface of the hearth or auxiliary base layer as described above.

Pavement thickness is determined according to traffic load and strength of volcanic cladding composition in the range of 10cm to 30cm. In general, the trails are set within the range of 10cm, the small parking lot is within 15cm, and the large parking lot is within the range of 30cm.

In the design of volcanic clam sludge composition, the volcanic clam sludge composition is determined in one step, the volcanic clam sludge composition is determined in two steps. Prepare the composition. In Table 3, compressive and flexural strengths are the test results after 28 days of wet curing.

Test body number (mixing ratio) Dry density kg / ㎥ Cement wt% of volcanic debris Slaked lime of volcanic debris wt%  Volcanic cladding + cement + slaked water wt% (optimum content ratio) Compressive strength kgf / ㎠ Flexural strength kgf / ㎠ Remarks One 1,450  5  One 17  48  8.0 2 1,460  5  5 18  62 10.4 3 1,470  5 10 20  73 12.2 4 1,460 10  One 19  81 13.6 5 1,480 10  5 20  90 15.1 6 1,500 10 10 22  98 16.4 7 1,490 15  One 20 116 18.3 8 1,500 15  5 22 136 22.8 9 1,520 15 10 24 146 24.4 10 1,510 20  One 23 144 24.1 11 1,530 20  5 25 166 27.7 12 1,550 20 10 26 192 32.1

In Table 2, the formulation is composed of 5 to 20% by weight of cement, 1 to 10% by weight of lime, and 15 to 30% by weight of mixture of cement and slag. The volcanic clam sulphate composition is prepared by mixing completely with water.

The fabrication and testing of the specimens were conducted in accordance with the following Korean Industrial Standards. KSF2329 (method for fabricating and curing specimens for compressive and flexural strength test of soil cement in laboratory), KSF2328 (test method for compressive strength of soil cement), KSF2325 (test method for flexural strength of soil cement). The KSF2331 (Test of Water Content and Density Relationship of Soil Cement Mixtures) test is to determine the optimum water content to obtain the maximum compaction by calculating the density of specimens according to the water content.

Subject Number W / C% W (water) kg / ㎥ C (cement) kg / ㎥ Volcanic debris kg / ㎥ Stone powder kg / ㎥ Flexural strength kgf / ㎠ Water absorption% Stone replacement rate One 20 60 300 2020    0 51 6.0 0% 2 20 60 300 1616  404 53 5.7 20% 3 20 60 300 1212  808 55 5.5 40% 4 20 60 300  808 1212 58 5.2 60% 5 20 80 400 1895    0 56 5.8 0% 6 20 80 400 1516  379 59 5.5 20% 7 20 80 400 1137  758 61 5.2 40% 8 20 80 400  758 1137 64 5.0 60% 9 20 100 500 1766    0 59 5.6 0% 10 20 100 500 1413  353 62 5.2 20% 11 20 100 500 1060  706 64 5.0 40% 12 20 100 500  706 1060 67 4.8 60%

Table 3 shows the blending ratio, flexural strength and water absorption results of the volcanic chain siliceous composition with stone powder added. The test was performed according to the test method of KSF4419 (concrete interlocking block for sidewalks). Volcanic debris and stone powder were used in the dried state, and stone powder was replaced by 20%, 40%, and 60% of the volcanic chain snow weight. It can be seen that as the amount of stone powder increases, the bending strength is increased and the absorption rate is lowered. The volcanic clathrate has a maximum aggregate size of 10 mm and stone powder of 5 mm. As a result of Table 4, it is possible to manufacture various building materials such as sidewalk blocks and bricks.

division Conventional soil packaging The present invention Remarks principle Binding of soil particles by solid fire Take advantage of cement affinity of pozzolanic materials Material used Soil, fire Volcanic debris, cement, slaked lime Compressive strength 10-50kgf / ㎠ 48 ~ 192kgf / ㎠ KSF2328 Flexural strength 2-5kgf / ㎠ 8 ~ 32kgf / ㎠ KSF4419 Functional Far infrared ray emission Far infrared ray emission, photocatalyst function, atmospheric purification function design Natural Earth Color Red Usage Soil stabilization Pavement

Table 4 shows the case of using volcanic debris, cement, and slaked lime of the present invention, and the conventional soil pavement is a principle of expressing strength by the effect of restraining soil particles of solidified material, and its main use is stabilization of soil. On the other hand, the present invention has been developed for the road surface layer (base) by the strength expression by the pozzolanic reaction and hydration reaction of volcanic chain siliceous.

In the present invention, the compressive strength and the flexural strength are higher than those of the conventional soil pavement because the content of organic matter is much lower than that of the conventional soil pavement, and the volcanic chain sulfide has excellent pozzolanic reaction and hydration reaction with cement. In particular, an optimum blending ratio was obtained which could increase the strength. The present invention exhibits a compressive strength of at least 50 kgf / cm 2 or more. Compared with the conventional soil pavement, the present invention shows an excellent effect in terms of workability, quality control, and design. In conventional soil pavement, the compressive strength is low, and the variation is very irregular. On the other hand, the present invention is capable of constant quality control according to the mixing ratio.

Figure 2 shows that the exhaust gases emitted from the car, that is, NOx, SOx, CO, HC and other pollutants are mostly acidic, so that they quickly adhere to the soil surface of the strong alkali, and at this time, the UV component of the sunlight and the road surface of the volcanic chain snow road Photocatalyst (TiO ₂ ) component of the chemical reaction, that is, the pollutant gas is purified by water (H ₂ O), carbon dioxide (C ₂ O), or calcium nitrate (Ca (NO ₃ ) ₂ attached to the surface ) Can be cleaned by rain, keeping the original clean surface. That is, the concept of purifying contaminants through self-cleaning. 3 is an enlarged view of the photocatalytic reaction principle. When contaminants adhere to the surface of titanium dioxide particles exposed to the surface of the atmosphere, the contaminant is purified by photocatalytic reaction with ultraviolet light.

Manufacture and test method of NOx removal specimen

Since the standard for testing the photocatalytic effect is not provided in the domestic as well as the foreign countries, the following tests were performed with reference to the test method published in the recent paper. The volcanic chain sediment composition block (40 × 40 × 2cm) was put into a sealed acrylic chamber (60 × 60 × 60cm) with a thickness of 1cm, nitrogen gas was added, and the NOx concentration measuring tube was inserted into the chamber for 1 hour. NOx concentration in the solution was measured. Ultraviolet light used sunlight and the test was started at 9 am. NOx concentration meter was used ECA450 model of BACHARACH, USA. The reaction area of the test body was 1600 cm2 and the volume of the chamber was 216,000 c㎥.

4 shows a schematic diagram of a nitrogen oxide removal test apparatus. In FIG. 4, 100 is sunlight, 110 is nitrogen oxide concentration measurement tube, 120 is acrylic chamber, 130 is mixed air, and 140 is volcanic chain sulfide composition block test sample.

Figure 5 shows the nitrogen oxide removal performance over time of the volcanic chain sulfide composition block prepared by the compounding ratio 5 of Table 3. It can be seen that the nitrogen oxide of 160ppm is lowered to 1ppm or less in just 6 hours. It is a breakthrough in performance without a prior published case.

<Actual example>

The road paving of volcanic debris roads of the builder (Kim Moon-hoon, Hong Jong-hyun), date and time (June 10, 2005), place (Jeju city), and construction scale (width 2m, length 40m, paving thickness 12cm) were tested. The mixing of the materials was standard mixing, which measured 2000kg / ㎥ of volcanic crushed snow with a maximum aggregate size of 20㎜, 200kg / ㎥ of cement, 100kg / ㎥ of calcined lime, and volcanic crushed snow, and dried 3% at the optimum water content. Therefore, after adding volcanic debris + cement + slaked lime to a forced mixer and stirring it sufficiently, 460kg / ㎥ of mixed water is evenly sprinkled with water to the optimum function ratio, mixed well and discharged. Was done. After taking samples for strength measurement, specimens were prepared, and the 28-day compressive strength of the volcanic chain sulfide composition was measured to be 90 kgf / cm 2 and the flexural strength was 15.1 kgf / cm 2.

Technical aspect

Unlike the conventional soil cement method used for soil stabilization, a functional road pavement composition method using volcanic debris suitable for road surface (base) was developed.

Naturally, the higher the amount of binder (cement) used, the higher the strength, but the same texture problems and economic problems as general concrete occurs. Therefore, a volcanic cladding composition has been developed that uses minimal cement and has significantly higher compressive strength and flexural strength than conventional soil concrete.

Volcanic cladding road pavement has high far-infrared emissivity and very good nitrogen oxide removal efficiency. That is, it has a variety of functionalities that conventional cement roads and soil pavement did not have.

Compared with the conventional soil pavement method, the workability is good and the quality control is convenient. This is because compared with the conventional soil pavement using only clay soil particles, the material properties of the volcanic debris mixed with volcanic rock debris and silty sand are good and the reaction efficiency with cement is good.

In addition, the present invention was confirmed that there is no damage due to freezing and thawing in winter due to the low absorption rate of the pavement, the long-term strength is high and excellent durability. The surface texture was so natural that it resembled the natural ground.

In particular, there is little material separation in the mixing and laying process, so no additional supplementary work is required.

According to the long-term observation of the pavement, there was no damage caused by freezing and thawing, and the surface dents and cracks were significantly less.

The pavement according to the present invention can induce air pollution purification. Conventional road pavement has no pollution purification function, but the present invention is a powerful pollution purification function has a great effect on environmental conservation. That is, the volcanic debris on the pavement surface is exposed to a myriad of pores, which is advantageous for adsorption with contaminated air.

Economic aspects

The main materials used in the process are volcanic debris and stone dust. Both materials are industrial by-products and have been used in low value added products to date. The industrial by-products are used to manufacture high value-added methods and construction materials. In particular, volcanic debris is generated in Seoksan, Jeju Island, but there is no suitable consumer, so it is mainly consumed for cover or landfill. The use of these industrial by-products is very competitive in price. In addition, in Seoksan, volcanic debris is not used for a large amount, so it is being accumulated on a large scale in the site, resulting in site acquisition and construction costs. In particular, since Jeju has few clay-based soils, general soils are sold at high prices, but volcanic debris is very low.

Cultural aspects

The red volcanic clam is a mineral distributed only in the Jeju area within the Korean peninsula and its color is unique. Because of the use of unique local resources, the methods and products using them can be consistent with local sentiments and represent unique local cultures.

Claims (8)

In the road paving method using volcanic clam sludge, the volcanic clam sludge is screened using a screen, but when the road paving thickness is 15 cm or less, use volcanic clam sludge selected with the maximum aggregate size of 25 mm or less. The volcanic chain snow selected using an aggregate size of 40 mm or less is used, 5 to 20% by weight of cement and 1 to 10% by weight of slaked lime are added to the weight of the volcanic chain, and the volcanic chain and the cement 15-30% by weight of water and 15% by weight of the mixture of slaked lime are added to the volcanic chain sediment composition on the upper surface of the roadbed or subbase layer with a thickness of 10-30cm, and compacted to be 95% or more of the maximum dry density. A road paving method using a road paving composition mainly based on volcanic debris. In the road paving method using volcanic clam sludge, the volcanic clam sludge is screened using a screen, but when the road paving thickness is 15 cm or less, use volcanic clam sludge selected with the maximum aggregate size of 25 mm or less and the maximum when the road paving thickness is 15 cm or more. Use volcanic chain sewage sorted to an aggregate size of 40 mm or less, and mix the selected volcanic chain sewage with 700-1700 kg / m3, stone powder 300-1300 kg / m3, cement 300-500 kg / m3, and water 60-100 kg / m3. Road paving using volcanic clam sludge as the main component of volcanic clam sludge, characterized in that it is laid on top of roadbed or subbase layer with thickness of 10 ~ 30cm and compacted to 95% of maximum dry density and then cured by surface treatment. Way. The method of claim 1 or 2, wherein the surface treatment is 5 to 20 kg / ㎡ for crushed aggregates 5 to 25 mm when crushed aggregates laid If the surface treatment is a liquid hardener that is a surface hardening agent, the road paving method using a road paving composition based on volcanic chain sulfide, characterized in that the spraying water-soluble acrylic resin, water-soluble paraffin hardener, lac oil (LAC). 15 to 30% by weight of the volcanic debris and the mixture of 5 to 20% by weight of cement and 1 to 10% by weight of calcite and 1 to 10% by weight of the mixture A road pavement composition mainly based on volcanic debris, characterized in that the production of a percentage of water. Volcanic debris is produced by mixing and mixing 700 ~ 1700kg / m3, stone powder 300 ~ 1300kg / m3, cement 300 ~ 500kg / m3 and water 60 ~ 100kg / m3. Road paving composition. The road paving composition according to claim 4 or 5, wherein the road pavement composition is produced by mixing 1 to 5% by weight of anatase-type titanium dioxide with respect to the weight of cement in order to increase the atmospheric purification function. Packaging composition. 15 to 30% by weight of the volcanic debris and the mixture of 5 to 20% by weight of cement and 1 to 10% by weight of calcite and 1 to 10% by weight of the mixture The road pavement composition mainly based on volcanic debris, characterized in that to produce a pavement block or brick for road pavement with high compressive strength and flexural strength by pouring the composition produced by adding% water to the mold and vibration and pressure compaction. The composition produced by mixing volcanic debris 700 ~ 1700kg / m3, stone powder 300 ~ 1300kg / m3, cement 300 ~ 500kg / m3 and water 60 ~ 100kg / m3 was added to the mold and vibrated and compressed. A road pavement composition based on volcanic debris, characterized in that it produces a pavement block or brick for road pavement with high compressive strength and flexural strength.

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