KR20050032542A - Hardener composition for soil congelation - Google Patents

Abstract

Provided is a hardener composition for soil congelation, which has semi-permanent strength and durability, solves the problems of exhaust of aggregate and environmental pollution, and is suitable for wet style pavement. The hardener composition for soil congelation comprises 5-25 parts by weight of a hardener per 100 parts by weight of water, wherein the hardener comprises 15 30 wt% of MgO, 5 20 wt% of gypsum powder, 5-15 wt% of a transparent waterproofing agent, 3-15 wt% of KCl, 3-15 wt% of TiO2, 2-13 wt% of Al2O3%, 2-10 wt% of CaCl2, 1-5 wt% of Mn, 1-5 wt% of MgCl2, 1-5 wt% of NaCl, 0.01-1.0 wt% of FeO, 0.01-1.0 wt% of CoCl2, 0.01-1.0 wt% of SiO2, 0.01-1.0 wt% of Na2SO4, 0.01-1.0 wt% of NH4Cl and 0.01-1.0 wt% of FeCl3.

Description

Hardener composition for soil congelation

The present invention relates to a hardener composition for soil coagulation. More specifically, the present invention relates to a hardening agent composition for soil coagulation, which allows the inorganic material to harden in a short time when mixed with the local soil to solidify, thereby maintaining the soil coagulation and semi-permanent strength and durability.

In general, when paving a road, a base of a certain height is necessarily formed, and a large amount of aggregate such as sand and gravel is required to form a base and a paving layer.

In particular, in recent years, large-scale multi-unit houses are being constructed to improve the living environment and to increase the housing supply rate, and aggregates are insufficient due to the large amount of aggregates required to expand roads and paving works to improve the traffic environment. The situation is intensifying.

When the base layer is formed for paving the road due to the lack of aggregates, the base layer is formed when the mixed aggregate of sand and gravel is not laminated to a predetermined thickness or the sea sand or gravel containing a large amount of salt is not properly washed. It is used as a mixed aggregate.

In this way, when the base is not normally constructed during road pavement construction or when the pavement is formed on the base with the mixed aggregate containing a large amount of salt, the load of the running vehicle and the repetitive operation Of course, there is a serious problem that the package is easily cracked due to the vibration transmitted from the vehicle, in which case the package is damaged.

Meanwhile, mountain roads, forest roads, agricultural roads, and village roads remain unpaved roads, and in the case of such roads, there is no sticking force between the dirt particles forming the road surface, and the road surface is frequently driven by frequent driving and rainfall. Due to the loss of soil and soft ground due to water, the road surface is in poor condition, and light agricultural machinery is difficult to pass.

For such unpaved forest roads and agricultural roads, the government and local governments have secured budgets and continued paving for road paving. On the other hand, for the pavement of such a light road, the base motto of the pavement target road is cut off, and cement powder and hardener are mixed and stirred, placed on the roadbed of the target road, and then compacted and solidified using a vibratory roller or the like. Soil cement packing method is used.

However, the biggest problem of the road paving method is that a sufficient mixing and mixing of motto, cement, and hardener cannot be made, resulting in partial empty mixing, and the road surface constructed by such paving materials causes partial strength deficiency. This causes pavement work, such as partial pavement of the road surface.

In the case of dry mixed soils, due to the low moisture content, it cannot be laid at the same time as the planned packing thickness, and it is necessary to carry out several laying and compacting operations while adjusting the moisture content through spraying. It also causes various problems such as difficulty in controlling the moisture content by watering carried out in parallel with laying.

Therefore, extensive researches have been conducted on the hardening agent for soil condensation to form soils harmless to the human body for the safe construction of the existing soil pavement base or auxiliary base layer and the soil cement paving method using field soil. However, conventional hardeners are difficult to dissolve due to their chemical properties and have a lot of precipitates, which are cumbersome in use, and are disadvantageous due to problems in synthesis and classification.

In addition, the cement is mixed with soil using the conventional hardening agent for soil condensation, but it is used for building materials, road pavement or soft ground solidification. There is a problem that the utilization is not used because it is not widely used.

The present invention is to solve the problems of the prior art as described above, the object of the present invention is to solve the lack of aggregates and environmental pollution problems and at the same time provide a curing agent composition for soil coagulation having a semi-permanent strength and durability.

In addition, it overcomes the problems of the curing agent used in the application of the packaging method using the dry cement method of the conventional dry mixing method, and provides a safe soil curing agent composition for use in soil packaging of wet mixing (Wet MIxing Style) It is.

Soil hardening agent composition according to the present invention for achieving the above object is:

5 to 25 parts by weight of a curing agent component with respect to 100 parts by weight of water, wherein the curing agent component is 15 to 30% by weight of MgO, 5 to 20% by weight of gypsum powder, 5 to 15% by weight of transparent waterproofing solution, 3 to 15% by weight of KCl , TiO ₂ 3-15%, Al ₂ O ₃ 2-13%, CaCl ₂ 2-10%, Mn 1-5%, MgCl ₂ 1-5%, NaCl 1-5%, FeO 0.01 to 1.0 wt%, 0.01 to 1.0 wt% CoCl _2, 0.01 to 1.0 wt% SiO _2, 0.01 to 1.0 wt% Na ₂ SO _4, 0.01 to 1.0 wt% NH ₄ Cl and 0.01 to 1.0 wt% FeCl ₃ Characterized in that made.

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

Each component composition of the above-mentioned hardening agent composition for soil condensation of the present invention can be appropriately changed in the composition ratio within the above-described range according to the physical properties of the motto which is actually applied, so that the concrete of the soil can be made into strong and weak. In addition, the motto may be optionally mixed with quicklime, cement and the like as necessary.

In general, soil is composed of clay and sand, and has various soil types according to the soil, and the soil becomes dark brown by plants, etc., and complex polymer mixtures generated by decomposing organic matter are attached to the adhered water around the soil particles. When dissolved, it reacts with the calcium ions in the cement paste to form a non-hydrophobic film on the surface of the cement hydrate and negatively interferes with the progress of residual crystallization.

However, in the case of using the hardening agent composition for soil coagulation according to the present invention, it is possible to remove the charged state of the soil and to refine the arrangement between particles by using ion exchange, to generate carbon dioxide and ammonia, and By condensation into limestone of ammonium hydroxide in the reaction, bacteria in the soil increase adhesion and waterproofing, and good interparticle bonding, so that the supporting capacity can be improved to a stable ground even in soft ground such as corrosive soil and clay.

This effect is attributable to gypsum powder, MgO, and transparent waterproofing liquid added to the hardening agent composition for soil coagulation of the present invention, and provides an excellent strength and durability effect by forming a waterproof film on the surface of the motto particles.

In particular, the soil contains a large amount of the organic compound of the polymer compound in water dissolved form, when applying the curing agent composition according to the present invention by forming a group of ions around the soil particles in the vicinity of the calcium ion invasion In addition to having an adsorbed water containing R-COOH that reacts with the inhibitory ions to form a non-hydrophobic membrane, water molecules around the soil particles are also salted out of the ion group.

By such a mechanism, the gap between the soil particles is narrowed and the soil particles are solidified together with the potential drop, thereby connecting the fine particles between the soil particles which prevent the invasion of calcium ions.

Furthermore, the ground treated with the curing agent composition of the present invention stabilizes the bearing capacity for a longer time than the concrete life of the sand gravel in the hydroponic state, and the secondary pollution and aging due to the lack of strength, the weakness of the soil cement, the elution of calcium ions, etc. Eliminate defects caused by

In addition, each element and the mineral component contained in the curing agent composition of the present invention is active by ionizing.

On the other hand, the curing agent component of the present invention consists of an inorganic component has a function to adsorb heavy metals contained in the motto, not only to make the earth particles are connected to the needle crystals, but also serves to strengthen the solidification power between the soil particles. In particular, in the case of TiO ₂ gives a strong durability to seawater, in the case of Al ₂ O ₃ serves to strengthen the adsorption force between the soil particles, Mn serves to prevent dissolution in seawater action.

In addition, the curing agent composition is a continuous hardening occurs over time, and as a subgrade material easily stabilizes the soil with a lot of poor organic matter, while moving to the deep soil soil when used in soft ground such as volcanic ash clay or viscous soil It plays a role in promoting power.

Thus, the hardening agent composition for soil condensation of the present invention can be active by ionizing each element in the aqueous solution, and it is contained in a large amount in a state in which a maintenance substance that becomes a high molecular compound in ordinary soil is dissolved in the soil particles. It is adsorbed as a group of ions, and when cement is used together with motto, it interferes with the binding of calcium ions in the cement. In addition, it reacts with the ions of the organic substance that inhibits various ions, deodorizes the adsorbed water of the organic substance, and at the same time, releases water molecules around the soil particles. As a result, the potential is lowered and the distance between the soil particles becomes smaller, and the fine particles between the soil particles that have prevented the intrusion of calcium ions are solidified and solidified.

In addition, by rapidly creating a strong alkali state of pH 10 or more, hydrates such as calcium and silica, which are hydration reactions of cement, form plate crystals, which serve as intermediate roles between moto particles, which act to rapidly grow. That is, the coagulation effect reaction proceeds by losing the fluidity of the cement paste.

The method for producing the soil concreteized composition using the hardening agent composition for soil coagulation of the present invention as described above will be described below according to a preferred embodiment, but is not particularly limited thereto.

First, the required amount of water is injected into the water tank, and about 5 to 25 parts by weight of the curing agent component is added to and mixed with 100 parts by weight of water to prepare a curing agent composition according to the present invention.

Here, the curing agent component is MgO 15-30% by weight, gypsum powder 5-20% by weight, transparent waterproofing solution 5-15% by weight, KCl 3-15% by weight, TiO ₂ 3-15% by weight, Al ₂ O ₃ 2 _~ 13% by weight, CaCl ₂ 2-10%, Mn 1-5%, MgCl ₂ 1-5%, NaCl 1-5%, FeO 0.01-1.0%, CoCl ₂ 0.01-1.0%, SiO ₂ 0.01 to 1.0% by weight, Na ₂ SO ₄ 0.01 to 1.0% by weight, NH ₄ Cl 0.01 to 1.0% by weight and FeCl ₃ 0.01 to 1.0% by weight.

Next, the amount of water is adjusted according to the water content of motto (raw soil) to dilute the curing agent composition, so that the amount of water does not exceed approximately 20 times based on the curing agent composition.

Next, the obtained hardening agent dilution solution is mixed and stirred for a predetermined time, preferably about 5 minutes or more while spraying in a motto and a mixing mixer into which cement is added as necessary, to obtain a homogeneously mixed wet soil concrete composition.

Here, the amount of the cement and hardener diluent used is typically 10 to 50 parts by weight based on 100 parts by weight of moto.

Lastly, after direct installation on the floor and the surface of the construction site to be constructed, the construction is performed at the stage of compacting and using a specially prepared finisher to make the surface smooth.

Hereinafter, the present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited thereto.

Example 1

A hardener composition was prepared by adding 100 parts by weight of water to the water tank and then about 15 parts by weight of the curing agent component and mixing. Here, the curing agent component is MgO 25% by weight, gypsum powder 15% by weight, transparent waterproofing solution 15% by weight, KCl 11% by weight, TiO ₂ 8% by weight, Al ₂ O ₃ 9% by weight, CaCl ₂ 7% by weight, Mn 2 Wt%, MgCl ₂ 3 wt%, NaCl 2 wt%, FeO 0.4 wt%, CoCl ₂ 0.3 wt%, SiO ₂ 0.5 wt%, Na ₂ SO ₄ 0.7 wt%, NH ₄ Cl 0.5 wt% and FeCl ₃ 0.6 wt% Contains%

Next, the curing agent diluent was prepared by adding and diluting approximately 10 to 20 times water based on the binder agent composition, depending on the water content of the raw alumina to the curing agent composition.

The resulting diluent of the curing agent was mixed and stirred for about 5 minutes while spraying in a mixed mixer in which the soil soil and cement were added at a weight ratio of about 5: 1 to obtain a homogeneously mixed wet soil concrete composition. At this time, the slump of the homogeneously mixed wet soil concrete composition was about 4-12 cm.

It was leveled to the thickness of the road to be constructed and placed in accordance with the installation thickness and the slope gradient, and then used to make the surface smooth and compacted using a specially prepared finisher.

The uniaxial compressive strength measurement on the pavement is carried out by measuring the compressive strength of soil and cement of KS F 2328 to confirm the pavement condition on the paved road. Test specimens are based on 28 days of age. It was prepared according to the indoor compounding test standard using the Sihu irradiator (NX) or Hilticore extractor (Φ 2 ″) and the strength was measured after curing in a wet curing tank, and the results are shown in Table 1 below.

Example 2

A hardener composition was prepared by adding and mixing 100 parts by weight of water and then about 20 parts by weight of the curing agent component to the water tank. Here, the curing agent component MgO 25% by weight, gypsum powder 13% by weight, transparent waterproofing solution 15% by weight, KCl 11% by weight, TiO ₂ 9% by weight, Al ₂ O ₃ 9% by weight, CaCl ₂ 8% by weight, Mn 2 Wt%, MgCl ₂ 3 wt%, NaCl 2 wt%, FeO 0.4 wt%, CoCl ₂ 0.3 wt%, SiO ₂ 0.5 wt%, Na ₂ SO ₄ 0.7 wt%, NH ₄ Cl 0.5 wt% and FeCl ₃ 0.6 wt% Contains%

The process of producing a wet soil concrete composition using the hardener composition obtained therefrom and laying the same on a site and checking the pavement state were performed in the same manner as in Example 1, and the results are shown in Table 1 below. .

Example 3

A hardener composition was prepared by adding and mixing 100 parts by weight of water and then about 20 parts by weight of the curing agent component to the water tank. Here, the curing agent component MgO 23% by weight, gypsum powder 15% by weight, transparent waterproofing liquid 11% by weight, KCl 11% by weight, TiO ₂ 10% by weight, Al ₂ O ₃ 9% by weight, CaCl ₂ 9% by weight, Mn 3 Weight%, MgCl ₂ 3%, NaCl 3%, FeO 0.4%, CoCl ₂ 0.3%, SiO ₂ 0.5%, Na ₂ SO ₄ 0.7%, NH ₄ Cl 0.5% and FeCl ₃ 0.6% Contains%

The process of producing a wet soil concrete composition using the hardener composition obtained therefrom and laying the same on a site and checking the pavement state were performed in the same manner as in Example 1, and the results are shown in Table 1 below. .

Example Size (diameter ㅧ height) (cm) Area (A) (㎠) Volume V (cm 3) Drying unit weight (rd) (g / cm 3) 28 Day compressive strength (㎏ / ㎠) One 5 ㅧ 10 19.6 196.25 1.35 40.0 2 5 ㅧ 10 19.6 196.25 1.35 37.0 3 5 ㅧ 10 19.6 196.25 1.35 38.0

On the other hand, permeability measurement is a measure of the degree of water passing through the internal structure of the package, and the watertightness and durability of the improved body in relation to the quality of the quality, such as materials, formulations, curing methods, and construction, such as concrete chipping, compaction It is a standard for judging.

Such a permeation measurement method includes a pressure permeation method (Out Put) and a pressure permeation method (In Put), but the pressure permeation method is used to measure the permeability of the road pavement as described above.

Permeability measurement for the pavement of the road constructed according to the present invention was carried out as follows.

a) measuring tool

-. Permeability Measuring Device: Hoek Triaxial Cell

-. Measurement specimens: cylindrical specimens of 28 days of age

b) measuring method

-. First, the surface of the specimen and the measuring vessel must be kept in a tightly sealed state. When the surface of the specimen and the membrane are in close contact with each other, they are kept tightly against a water pressure of 20 to 30 kg / cm 2.

-. In this state, the flow rate is the same as the flow rate and the flow rate is maintained until the steady state flow is formed.The flow rate is then calculated using the flow rate according to Darcy's law. .

k = rwhQ / PA

Where k is the permeability coefficient (m / sec), A is the cross-sectional area of the specimen (cm 2), P is the water pressure (kg / cm 2), h is the height of the specimen (cm), Q is the flow rate (cc / sec), and rw is Unit weight on water (kg / cm 3).

-. The U.S. Bureau of Measurement measures the permeability coefficient using the inflow rate when the inflow and outflow rates are approximately equal (in the case of Ψ 15 cm) by applying 28 kg / cm 2 water pressure to a cylindrical specimen of the same diameter and height. Calculate

On the other hand, the driving measurement on the pavement of the road constructed as described above, if the road surface caused a large deformation or uneven deformation due to the traffic load transmitted through the pavement of the completed road, the pavement also naturally deforms This is done as part of a quality control test to detect defective points or reduce future deformations.

In addition, the leachate measurement of the pavement of the road construction as described above is to collect the leachate from the upper part of the pavement to harmful ingredients that cause groundwater pollution, soil pollution, secondary environmental pollution to the authorized research institute Ask for confirmation.

In addition, the plate load measurement of the pavement of the road construction as described above is applicable to the use of KS F 2444 (measurement of soil bearing capacity for static load in the enlarged base) or KS F 2310 (measuring plate load of the road). Select a test method that meets the requirements and perform quality control on the improved ground.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, and the curing agent composition for condensation of the soil according to the present invention is not limited thereto, and it is common in the art within the technical spirit of the present invention. It is obvious that modifications and improvements are possible by those skilled in the art.

As described above, when the hardening agent composition for soil coagulation according to the present invention is used, safety and workability are improved to the maximum as the soil hardens and solidifies, and the water permeability and elasticity are excellent when a small amount of cement is added. This can prevent environmental pollution to the maximum.

In addition, since the hardening occurs over time, it does not age, and it is possible to obtain a long-term environmentally friendly and stable soil.

Furthermore, the natural environment is protected by the pollution-free inorganic components contained in the hardening agent composition for soil coagulation, and the pollutants occupied in the soil are insoluble by the heavy metal adsorption function of the hardening agent composition for soil coagulation.

In addition, according to the present invention, overcoming all the problems of the curing agent used in the application of the conventional dry mixing method of small cement cement, and safe soil used for soil packaging of wet mixing (Wet MIxing Style) A curing agent composition for condensation can be provided.

All modifications and variations of the present invention fall within the scope of the present invention, and the specific scope of protection of the present invention will be apparent from the appended claims.

Claims (1)

5 to 25 parts by weight of a curing agent component with respect to 100 parts by weight of water, wherein the curing agent component is 15 to 30% by weight of MgO, 5 to 20% by weight of gypsum powder, 5 to 15% by weight of transparent waterproofing liquid, 3 to 15% by weight of KCl , TiO ₂ 3-15%, Al ₂ O ₃ 2-13%, CaCl ₂ 2-10%, Mn 1-5%, MgCl ₂ 1-5%, NaCl 1-5%, FeO 0.01 to 1.0 wt%, 0.01 to 1.0 wt% CoCl _2, 0.01 to 1.0 wt% SiO _2, 0.01 to 1.0 wt% Na ₂ SO _4, 0.01 to 1.0 wt% NH ₄ Cl and 0.01 to 1.0 wt% FeCl ₃ A curing agent composition for soil coagulation, characterized in that consisting of.