KR100924133B1 - Pavement composition for soil road, preparation thereof, and method for paving soli road using it - Google Patents

Abstract

PURPOSE: A paving composition for loess roads, preparing method thereof, and paving method using the same are provided to secure a simple construction at a little cost. CONSTITUTION: A method for preparing a paving composition for loess roads comprises the following steps of: mixing 15-50wt% of loess powder with the particle size of 100mesh or less, 10-40wt% of lime powder, 20-50wt% of quartzite powder, and 5-25wt% of water-soluble soil solidifier to prepare a loess mortar; adding 10-30wt% of the loess mortar to 70-90wt% of main ingredients including natural soil or granite soil and dry-mixing them; and adding water so that the mixture's slump value becomes 7-10cm.

Description

Pavement composition for soil road, preparation, and method for paving soli road using it}

The present invention relates to a yellow soil packaging material composition comprising natural soil or masato as a main material, which is easy to construct and is excellent in durability and has excellent durability without any environmental pollution by blending specific loess mortar without mixing cement with the main material. The present invention relates to a packaging material composition and a pavement method using the same.

In general, asphalt or cement concrete is paved for the construction of sidewalks, parks, walkways and roads in apartments. Asphalt or cement concrete has the advantages of relatively high strength and ease of construction, but it does not absorb solar radiation and transfers it to the atmosphere as it is, thus raising the air temperature, and in case of road damage, debris becomes a source of soil pollution. In the case of the promenade, there is a problem that the affinity with the surrounding natural environment causes a heterogeneity and not only damages the entire natural landscape, but also requires a large cost for construction.

Conventionally, the following techniques have been proposed in order to construct a pavement based on clay, loess, natural soil or masato instead of asphalt or cement concrete in view of the problems of the pavement as described above.

In Korean Patent No. 10-0718292, after mixing 110-130 kg of cement per 1 m3 of Masato, a cone of 1-1.5 kg, an aggregate of 13 mm or less in diameter, and an aqueous solution formed by adding an AE reducing agent to water, While stirring, the aggregate and masato have a volume ratio of 3: 7, and a method of paving the ground using a pavement in which yellow iron oxide and red iron oxide are mixed at a volume ratio of 3: 1 with each other is proposed.

Korean Patent No. 10-258133 proposes a road pavement method using motto (original soil), cement powder and pavement soil of a hardener.

Korean Patent Laid-Open Publication No. 2002-0085530 discloses 14-18 by diluting 1.4-2% by weight of an inorganic curing agent in a mixture of 70-91% by weight of soil, 14-18% by weight of cement and 0.35-0.49% by weight of pigment. A soil pavement composition for road pavement consisting of the addition of water by weight is proposed.

In Korean Patent Publication No. 10-2005-0116769, a stirred mixture of 100 kg to 200 kg of dry mixed cement and 200 L to 400 L of water and a solid solution of 1 kg to 2 kg of a hardener and 700 g to 1200 g of chemical paste are stirred and mixed for 1 m 3 of motto. A mortar-type soil pavement method is proposed in which a mortar mixed agitated soil is laid on the foundation ground and then moist cured after finishing plastering.

The above methods do not solve the problems of soil pollution as pointed out in cement concrete packaging because they use cement in high proportion.

In Korean Patent No. 10-0872860, a first auxiliary layer formed of a mixed aggregate having a diameter of 20 mm or less on the ground, a second auxiliary layer formed of an aggregate having a diameter of 30-40 mm on top of the first auxiliary layer, and a second auxiliary device. 50% to 60% by weight of agglomerated granules at a particle size of 2 to 3 mm, and 10% to 15% of ocher ground at a particle size of 2 to 3 mm on the permeable elastic layer on the layer, the primer layer on the permeable elastic layer, and the upper surface of the primer layer. %, A natural soil mixed layer formed by uniformly mixing 15 to 30% by weight of the colored rubber chip crushed to a particle size of 2 ~ 3mm, and a top coating layer formed by applying to the upper surface of the natural soil mixed layer Flexible rod natural soil packaging material is proposed. However, this method has a disadvantage of low practicality because the packaging cost is too high because the elvan particles and ocher powder used as the main materials for the top coating layer are expensive materials.

Korean Patent No. 10-0882888 No. 100 parts by weight of clay; It is composed of 10 parts by weight of an aqueous solution for solidification with respect to 100 parts by weight of clay, wherein the aqueous solution for solidification is mixed in a weight ratio of 1: 3 with a ground aqueous solution and water, the ground aqueous solution is 30 to 45 wt% of liquid sodium silicate or silica sol, acrylic , EVA or PVA liquid resin 20-30wt%, Na or Ca bentonite 5-20wt%, ammonium alum or potassium alum 5-15wt%, loess powder 1-10wt%, cellulose or polysaccharide thickener 0.1 Clay composition for road pavement, characterized by -5 wt% and 0.1-5 wt% of pigment; Checking the compaction state of the substrate and selecting a construction method according to the compaction state; When the base surface is irregular by compacting the base layer with coarse gravel and crushed stone, mixing and installing 10 parts by weight of an aqueous solution for solidification with respect to 100 parts by weight of clay; Compacting the base layer with residue and earth and sand, and preparing the base layer surface by mixing 9 to 15 parts by weight of water to 100 parts by weight of clay; Spraying an aqueous solution for solidification, in which a ground aqueous solution and water are mixed at a weight ratio of 1: 3 on the package formed by the installation; After spraying the aqueous solution for solidification, compacting the package; There has been proposed a paving method using a clay composition for road pavement, which consists of curing the pavement. This method also has a disadvantage of low practicality because the packaging cost is too high since the main material is expensive clay.

In Korean Patent No. 10-0884208, per 1,500 kg of Masato, a mixture of 240 to 280 kg of zeolite mixed powder composed of zeolite and quicklime and an aqueous solution of water and AE sensitizer are prepared or stirred, or the color of the pavement is similar to that of yellow soil. For this purpose, a method of paving the ground using a pavement prepared by further mixing and stirring a predetermined amount of iron oxide (5 kg per 1500 kg of Masato) or ocher powder (5 kg per 1500 kg of Masato) has been proposed. In this method, it is difficult to uniformly mix the main material Masato and zeolite mixed powder, so that it is difficult to obtain uniform physical properties throughout the paved pavement, resulting in poor road durability.

Therefore, the present invention is environmentally friendly in view of the above problems as described above, easy to install without environmental pollution, excellent durability and possible construction at a much reduced cost, ocher road with natural earth or Masato as the main material It is a main object to provide a packaging material composition for use.

Another object of the present invention to provide a method for producing the pavement composition for the ocher road.

Still another object of the present invention is to provide a pavement method using ocher road pavement composition.

In the present inventor's research for achieving the above objects, when the ocher mortar of a specific composition is not mixed with cement and mixed with the main material of natural soil or masato, the composition of the ocher mortar is uniformly mixed with the main material. The coated pavement composition thus obtained is capable of paving with durable yellow soil, easy to install, economically feasible, and found to be environmentally friendly and free from environmental pollution. The present invention has been completed.

According to the present invention, in the pavement composition for ocher roads, it contains 70 to 90% by weight of the main material of natural soil or masato and 10 to 30% by weight of ocher mortar; The ocher mortar comprises 15 to 50% by weight of ocher powder, 10 to 40% by weight of lime powder, 20 to 50% by weight of silica mineral particles, and 5 to 25% by weight of water-soluble soil hardener. An ocher road pavement composition is provided.

According to the present invention, there is provided an ocher road pavement composition, wherein the ocher road pavement composition further contains water in an amount such that the slump of the composition is 7 to 10 cm.

In addition, according to the present invention in the method for producing a pavement composition for ocher road,

(a) 15 to 50% by weight of ocher powder passed through a sieve of 100 mesh or more, 10 to 40% by weight of lime powder, 20 to 50% by weight of silica mineral particles and 5 to 25% by weight of water-soluble soil hardener Manufacturing mortar,

(b) 70 to 90% by weight of the main material of natural soil or masato is provided with a method of producing a pavement composition for ocher road comprising the step of adding 10 to 30% by weight of the ocher mortar.

In addition, according to the present invention further comprises a wet bibimbung step (c) of stirring and mixing by adding water to the slump value 7 ~ 10 cm to the dry bibimbi composition obtained in the dry bibim beam step, characterized in that the pavement composition for ocher roads Provided is a method for preparing.

In addition, according to the present invention there is provided a pavement method of the ocher road, characterized in that for packaging the packaging material composition on the road surface.

According to the present invention, a combination of natural mortar and natural soil or masato which can be easily obtained at a city factory or nearby can be paved with durable yellow soil without using cement, and construction is simple and economical. This is possible, the paved road can be obtained such as environmentally friendly and no environmental pollution.

Hereinafter, the present invention will be described in more detail.

The ocher road pavement composition of the present invention comprises a main material (hereinafter, abbreviated as 'moto') of natural earth or masato and ocher mortar.

In the present invention, natural soil means soil collected at a place to be constructed, ordinary soil collected from nearby mountains or fields, and in the composition of the present invention, motto is a method of digging natural soil or masato collected in a conventional manner. After grinding, it can be prepared by sifting.

The loess mortar blended in the motto in this composition is 15 to 50% by weight of ocher powder, 10 to 40% by weight of lime powder, 20 to 50% by weight of silica mineral particles and 5 to 25% by weight of water-soluble soil hardener. Contains%

In the loess mortar of the present invention, the ocher powder imparts a bonding force to the motto, and the ocher mortar is blended so as to be uniformly mixed with the motto. When the particle size of the loess powder is too large, it is difficult to impart sufficient bonding force to the motto. As a result, since the durability of the pavement can be reduced, it is preferable to use a loess powder having a particle size passing through a sieve of 100 mesh or more. The ocher powder is preferable as the fine particles, but the finer the higher the production cost, it is preferable to use the ocher powder passed through a sieve of 100 ~ 350 mesh from an economical point of view. It is also more effective to produce ocher powder from highly viscous loess. In the loess mortar composition of the present invention, the content of the loess powder is 15 to 50% by weight, and when the content is less than 15% by weight, the binding strength of the composition is slightly weakened, and when the content exceeds 50% by weight, the binding strength increases due to the large amount of use. The effect is negligible and leads to a cost increase, which is undesirable.

The lime powder acts to bind and harden motto by interacting with the loess particles, and it is appropriate to make the ratio of the lime powder 10 to 40% by weight with respect to the content of the loess powder 20 to 30% by weight. If the content is too small or too much, the bond hardening property for the motto is somewhat insufficient.

The silica mineral particle may be a grinding product of silica mineral or natural silica sand. In this loess, the silica mineral particle acts as a carrier (carrier) of loess powder and lime powder, and the physical properties such as compressive strength of the composition. It serves to reinforce. When the content of silica mineral particles in the ocher mortar is less than 20% by weight, it is difficult to uniformly disperse the ocher powder and the lime powder in the motto. When the content of the clay mineral exceeds 50% by weight, the bonding hardening performance of the ocher mortar to the motto is Can be degraded.

The water-soluble soil hardener has a function of solidifying the soil through neutralization and hydration reaction by chemical ion substitution of the metal ions in the hardener when mixed with water, and Korean Patent Nos. 10-492291, 10- 230022, 10-258133, 10-536458, 10-521848, 10-125466, 10-693950, 10-868541, 10-477875, 10-114415 Ordinary water-soluble soil hardeners known in the publications of Nos. 10-632357, 10-118631, 10-374189, 10-186754, and 10-342849 can be used. For example, water-soluble containing metal compounds such as calcium chloride, sodium sulfate, sodium hydroxide, sodium carbonate, sodium chloride, sodium silicate, potassium carbonate, calcium oxide, calcium aluminate, sodium aluminate, potassium chloride, magnesium sulfate, magnesium chloride, iron chloride, iron oxide, etc. Soil hardeners may be used. Such soil hardeners may be blended with other conventional additives such as surfactants, blast furnace slag, fly ash, carbon, ammonium chloride and the like. The content of the soil hardener in the ocher mortar is 5 to 25% by weight is appropriate, if the content is too small, the strength of the pavement obtained by the construction of the composition may be lowered, if too much solidification is made too much Physical properties may be weakened.

In addition, depending on the use of the ocher road to be constructed, aggregate, clay, fly ash, blast furnace slag, cement, polymer binder, etc. may also be blended in the present composition according to the required properties, and as such aggregate, which is commonly used in the manufacture of cement concrete The clay may be used, and kaolin clay, montmorillonite clay, or the like may be used as the clay.

 The pavement composition for the ocher road of the present invention may be prepared in a dry bibimb state or may be prepared in a wet bibimb state.

For example, the ocher road pavement composition of the present invention is uniformly mixed with ocher powder, lime powder, silica mineral particles and water-soluble soil hardener to produce ocher mortar, and then the motto selected with the ocher mortar in a dry mixing device 1 It may be prepared by mixing and stirring at the same time at a weight ratio of 7 to 9 to produce a dry bib beam composition, and the mixed mixture is stirred and mixed with water into a wet mixing device to prepare a wet bibambi composition. It may be. In the preparation of the wet bibim composition, it is preferable to add water so that the slump value of the composition is 7 to 10 cm from the viewpoint of packaging workability and curing. The composition is excellent in the miscibility of the components can be prepared using a simple structure of the mixing device that can be easily installed in the factory, as a result there is an advantage that can be paved with yellow soil at a low construction cost.

The construction may be carried out by laminating the dry beam composition on the surface of the furnace, by roller compaction and wet curing, or by curing the wet beam composition after applying a predetermined thickness to the surface of the furnace.

  Features and other advantages of the present invention as described above will become more apparent from the following examples. However, the present invention is not limited to the following examples.

Example 1

The ocher mortar was prepared by adding the mixture to a mixer at a ratio of 35% by weight of ocher powder, 30% by weight of lime powder, 25% by weight of silica sand, and 10% by weight of water-soluble soil hardener. Soil hardener used at this time is 5% by weight of NH ₄ Cl, 20% by weight of NaCl, 2% by weight of FeCl ₃ , 1% by weight, 22% by weight of MgCl, 25% by weight of KCl, 15% by weight of CaCl ₂ and other 20% by weight It has a composition.

 300 kg of the obtained ocher mortar and 1,900 kg of natural soil selected by sieving and sieving were added to the mixer while stirring to prepare a packaging material composition in a dry state.

The resultant gunbibeam composition was added to the mixer with water and stirred to prepare a packaging material composition having a slump of 7 cm, which was pumped, laid in a 10 cm thickness on the furnace surface, and cured for 24 hours.

Ten specimens of diameter 5cm * height 10cm were collected at 1m intervals on the cured pavement, and the uniaxial compressive strength (MPa) and flexural strength (kg / ㎠) were measured by the KS method, and the maximum deviation between the specimens was measured. The results are shown in Table 1.

[Examples 2-3 and Comparative Examples 1-3]

The same procedure as in Example 1 was repeated except that the composition components of ocher mortar were used in the amounts shown in Table 1.

division Example Comparative example One 2 3 One 2 3 Ocher mortar (wt%) Ocher powder 35 40 25 - 20 45 Lime powder 30 20 30 65 60 45 Quartz sand 25 30 25 25 10 - Solidifying agent 10 10 20 10 10 10 Average uniaxial compressive strength (MPa) 23.5 24.0 23.0 16.0 17.5 18.0 Average bending strength (kg / ㎠) 62.5 63.0 61.5 42.0 45.0 43.0 Compressive strength deviation (MPa) 0.1 0.1 0.1 4.5 2.0 4.0 Maximum bending strength deviation (kg / ㎠) 0.1 0.1 0.1 5.5 2.0 6.0

The ocher road pavement compositions of Examples 1 to 3 according to the present invention from the results of Table 1 not only exhibit much better physical properties than the compositions of Comparative Examples 1 to 3 deviated from the present invention, but also have uniform physical properties throughout the pavement. It can be seen that it represents.

Claims (12)

delete delete delete delete delete delete delete In the method for producing a pavement composition for ocher road, (a) 15 to 50% by weight of ocher powder passed through a sieve of 100 mesh or more, 10 to 40% by weight of lime powder, 20 to 50% by weight of silica mineral particles, and 5 to 25% by weight of water-soluble soil hardener. Manufacturing mortar, (b) adding 10-30% by weight of the loess mortar to 70-90% by weight of the main material of natural soil or masato; (C) a method for producing a pavement composition for ocher roads comprising a wet bibimbly step of mixing and stirring water so that the slump value is 7 ~ 10 cm to the gunbibim composition obtained in the dry beam step. delete delete The method of claim 8, wherein the composition further comprises aggregate, clay, fly ash, blast furnace slag or cement. The ocher road pavement method, characterized in that the pavement composition for ocher road prepared by the method of any one of claims 8 and 11 on the road surface.