KR102131123B1 - Grouting method for supplementing the ground and stagnant water using synthesisgrouting material - Google Patents

Abstract

The present invention relates to a grouting waterproof method, which is applied in a site where a waterproof operation or reinforcement is required, such as the ground or tunnels. The grouting waterproof method can provide strong resistance against water to secure perfect waterproof effects in case of waterproof construction and surely distribute properties of a beginning crystallization agent and a completion rapid crystallization agent to increase waterproof effects for the ground. Furthermore, the grouting method provides long flow gel time (unconsolidated time while a composition is moved) with respect to resisting capacities and completion crystallization with respect to the water for the beginning crystallization agent so that permeating effects can be maximized.

Description

Grouting method for supplementing the ground and stagnant water using synthesis grouting material

The present invention relates to a grouting order construction method that is applied to a place that requires water restructuring or reinforcement such as a ground or a tunnel.

In general, the ground (including tunnels) has various conditions in various environments, such as groundwater and river effluent, infiltration water, soft ground (fault zone (crushing zone) and joint) elution water, and leachate. The influence of the permeation water on the structures and construction structures that are formed or to be formed in the surroundings penetrates into the cracks of the structure, and the internal reinforcing corrosion and the infiltrated waters have a structural effect by shrinking and expanding as the seasons pass through the cracks. In addition, the surrounding ground is relaxed, and the loading load is weighted, resulting in softening of the ground and destabilization of the construction body. In particular, it is necessary to protect and reinforce the surrounding grounds and structures only when the order construction is unstable in the adjacent structures around the river and become a water-resistant grouting composition rich in water resistance.

Ground reinforcement (reinforcement of soft ground and soft ground, a variety of methods), but grouting method to fix the target ground by injecting and spraying the grout through the inlet pipe in the gap between soil and rock (single layer (crushing zone) and joint section) It is called.

As the most common order grouting composition in Korea, LW method and suspension-based ordinary port cement or inorganic quick-setting agent are used to order various compositions.

The technology of geotechnical injecting materials has been developed mainly in advanced countries such as Japan, Europe, and the United States, along with construction technology, solution type (medical solution system), suspension type, and LW method and SGR method have been introduced from Japan to introduce silicate called cement and water glass. Suspension-type ground injection materials using soda are currently widely used. Suspension-type ground injecting materials using soda silicate are commonly used because the rapid setting material, soda silicate, is easily infiltrated into the soil, and it is easy to realize the characteristics of fast gel time, and the material is relatively economical. Due to the high ionization properties of the Na ⁺ component in sodium silicate, the dissolution phenomenon proceeds after gel formation, resulting in a decrease in strength, and in the long term, the tissue collapses, resulting in loss of order and ground reinforcement properties and serious groundwater contamination problems. Causes In addition, LW dissolution and suspension hardening are not achieved, resulting in deterioration in order performance and construction quality, and attention is required because there is damage to the surrounding environment caused by mixed water.

For this reason, in recent years, an SGR method using a special silicate-based quick-setting material and high-powder cement has been developed and put into practical use, which has significantly reduced the content of Na ⁺ , a leaching material of sodium silicate. The method of using a special silicate-based rapid material significantly reduces the soluble material, significantly improving the problem of tissue collapse or environmental pollution due to elution compared to the conventional method using soda silicate, but gel time due to the initial rapid reaction Since Na+ was not completely removed in order to obtain a long-term problem of long-term elution, there is a problem in that the reinforcement characteristics are not excellent because the long-term strength expression is insufficient compared to the cement-based ground injection material. Furthermore, the problem of leading to deterioration and curing of the suspension is not achieved, leading to deterioration of order performance and construction quality.

Specifically, as a problem of the most common order grouting composition, the phenomenon of dissolution of LW and hardening of the suspension (W/C effect of grout material: basic grout W/C and mixing with water generated or included in existing ground after construction) When it occurs, the grout W/C rises), resulting in a decrease in the performance and construction quality of the order, and the strength development (2MPa) is long, so the waiting period for stabilizing the ground gives a longer construction period. In addition, there is damage to the surrounding environment due to mixed water, and re-construction and social secondary damage occur during public use.

Korean Registered Patent No. 10-1078044 Korean Registered Patent No. 10-1530172

The present invention was devised to solve the above-mentioned problems, and the object of the present invention is to improve the water resistance ability remarkably, to enhance the permeability using micro cement with high powder, and to provide an environmentally friendly inorganic composition. It is used to provide a technology capable of constructing a high-quality order grouting by applying a grouting quality management system, which has a high level of strength and reinforcement by reaching more than 2MPa in a short time.

In addition, when applied to the steel pipe multi-pipe grouting method, it is possible to implement a systemization by suggesting a quantified construction method through quality control, and through this, it is possible to comply with standardized management standards and quality standards, and construction can be carried out quickly. It is to provide a cycle plan design that makes it possible.

In particular, by distinguishing the characteristics of this injection material, the water resistance is strong, so that a perfect ordering effect can be obtained during the construction of the order, and the first order grout material that increases the effect of the ground level by reliably distributing the characteristics of the final result and the final payment. Quantified by patch type, and the second grout material expressing characteristics that can secure fluid gel time and stagnant gel time (time when the composition is stagnated without being injected anymore) is quantified by patch type, A sample containing this injection material that enables the convenience and standardization of construction by realizing the convenience and standardization of construction by allowing the formation of only this injection material by mixing the patch composition quantified without measurement in the field construction. It is another object of the present invention to provide a construction method that can ensure the construction quality by measuring the compressive strength of, confirming and reinforcing the standardized performance of the process state.

As a means for solving the above-described problem, in an embodiment of the present invention,

As a construction method to provide a grouting ordering method that applies a standardized quality management system,

A drilling step of performing drilling on the ground;

This injection material that quantitatively mixes the primary grout material (A) packet having order characteristics including micro cement and quick-setting composition and the second reinforced grout material (B) packet having fluid gel time securing characteristics to form the main injection material Forming step;

A main injection material filling step of filling the main injection material with the perforation;

A curing step of curing the filled main injection material;

Containment evaluation step of extracting a sample sample in the form of a homogel or sandgel containing the cured main injection material to determine the suitability by calculating the compressive strength through a compressive strength machine; including, to provide a method for order grouting .

In addition, according to another embodiment of the present invention,

A drilling step of performing drilling on the ground;

A steel pipe insertion step of inserting a steel pipe into the perforation;

This is a method of quantitatively mixing the first order grout material (A) packet having the order characteristics including micro cement and quick-setting composition and the second reinforcement grout material (B) packet having the characteristics of securing the flow gel time to form the main injection material. Forming an injection material;

A main injection material filling step of filling the main pipe with the main injection material;

A curing step of curing the mixture in which the filled main injection material and the ground-generated soil contained in the perforation are mixed;

Containment evaluation step of extracting a sample sample in the form of a homogel or sand gel containing the cured main injection material to determine the suitability by calculating the compressive strength through a compressive strength machine;

It is possible to provide a grouting ordering method that applies a standardized quality management system.

Through this, even if the process of injecting the sealant in the grouting method using the steel pipe applied to the tunnel reinforcement method is removed, it is possible to ensure sufficient order and reliability of the reinforcing method only by introducing the quantitative main injection material according to the present invention. .

Through the standardized system operation applied to the above-described order grouting method of the ground, in the embodiment of the present invention, a process method that can be a quantitative reference while achieving the progress of gelation in a short time is presented, and even without the injection of a sealant, the present invention It is possible to finish the order and the reinforcement process by injecting only the main injection material having the composite reinforcement properties according to the invention. Thus, when the main injection material is injected in the existing process, the problem of backflow generation due to material separation and insufficient gelation of the sealing material can be eliminated.

In particular, standardization of numerical values that can be qualitative and quantitative criteria for realizing ground level and reinforcement methods to which the standardized quality management system provided by the present invention is applied, so that construction standards based thereon can be suggested.

In general, in the existing grouting method, when installing this injection material, it is necessary to install it with time for unexpected work, and the gelation retention time must be managed by Cycle Plen Design for each site condition. Due to the short gel time, which is a shortcoming of the shortcomings of the rapid addition of sodium silicate and inorganic quick-setting agents, the diffusion radius is not large. Due to this, the integration with the surrounding grounds is insufficient, and construction management and quality control are insufficient.

The present invention eliminates that gelling of the seal material (conditions for material separation and backflow prevention) affects the process, and the effect of injecting the seal material through the main injection agent can be realized in combination, and maintaining the gelation during construction of the main injection material Ensure sufficient construction time when installing the main injection due to time, so that there is no influence of the main injection due to the sealing material when injecting the main injection.

Furthermore, when the present invention is applied to a ground reinforcement method using a steel pipe, it implements a quality management system for the multi-stage grouting method of the steel pipe, suggests management standards thereby, and also adheres to the quality standards and can be constructed in a short time. Plen Design can be presented.

In addition, the inorganic composition was intended to compensate for the shortcomings of constructing by individually packaging the quantity of the composition corresponding to 1 batch by weighing separately for each required process in the field.

In addition, in the embodiment of the present invention, in order to solve the problem that is not suitable for the verification of real-time compressive strength, since the load cell of a large-scale compressive strength machine in a conventional on-site quality control room is not suitable for homogel and sandgel strength expressing fine strength, Compressive strength suitable for the standardization process of the present invention is arranged to maximize efficiency.

That is, in the present invention, in order to confirm the homogel strength and sandgel strength in checking the strength of the main injection material, a portable type homogel and a compressive strength machine dedicated to sandgel are developed to enable quality control systemization. As a result, by solving many problems that have been a problem in the steel pipe multi-stage grouting method, through the development of the steel pipe multi-stage grouting method and securing quality and construction for on-site construction, in 2017, the state audited to overcome the problems of the tunnel steel pipe multistage. do.

In particular, in the embodiment of the present invention, it is possible to significantly reduce the risk of contamination by using an environmentally friendly inorganic-based composition against environmental pollution due to elution water and groundwater during tunnel and ground reinforcement.

Particularly, the present invention is a problem of the most common ordering grouting composition in Korea, the phenomenon of LW leaching and hardening of the suspension (W/C effect of grout material: basic grout W/C and inclusion or generation in existing ground after construction) When mixed with the water, the grout W/C rises), resulting in a decrease in the performance and construction quality of the order, and the intensity development (2MPa) time is long, so the waiting period for stabilizing the ground gives a longer construction period. . In addition, there are damages to the surrounding environment caused by mixed water, which causes re-construction and social secondary damage during public use, and also proposes a solution to solve the conventional problems that require attention due to huge human and economic losses.

The water-repellent method according to an embodiment of the present invention for overcoming these problems, excellently improves the resistance of water, uses micro-cement with high powder, enhances penetration, and uses an environmentally friendly inorganic composition. , Strength expression (2MPa) or more is reached in a short time, so the effect of ground level and reinforcement is high, and by applying the grouting quality management system, it is possible to provide a high-quality construction method.

According to an embodiment of the present invention, the water resistance is strong, so that a perfect order effect can be obtained during construction, and the characteristics of the beginner result and the final payment are clearly distributed to increase the effect of the ground order. Furthermore, the ability to resist water against beginner resolution and the fluid gel time for completion (the time that the composition does not harden when moving) is long, maximizing the penetration effect. As a high-powder inorganic composition, the peripheral diffusion is excellent in terms of ground penetration. Can provide.

In addition, according to an embodiment of the present invention, the present invention can perform high-quality construction by systemizing the quality management of the order grouting method.

This, the inorganic composition constituting the first order grout material having the order characteristics is applied by packaging a small amount of the composition corresponding to 1 batch. This can solve the problem of weighing in the field and the disadvantage of weighing and constructing every batch, and a large-scale compression strength machine in the on-site quality control room to check the homogel strength and sandgel strength in checking the strength in the main indentation. The load cell of is not suitable for the homogel and sandgel strengths that express fine strength, and thus has the effect of implementing a quality control system by applying a compressive strength machine for portable type homogel and sandgel.

Specifically, by classifying the characteristics of the present injection material, the first order grout material that enhances the water resistance excellently and strengthens the penetration using micro-cement with high powder is quantified as a patch type, and at the same time When the surrounding diffusion due to the characteristics of the fluid gel time (the time when the composition moves is not gelled is defined as'flow gel time' below), the second reinforcement grout material that expresses the diffusion properties is patched. By quantifying by type, it is possible to form this injection material by mixing the patch composition quantified without measurement in the field construction, so that the convenience and standardization of construction can be realized and the gelation is implemented in the process in real time. By measuring the compressive strength of the sample containing the injection material, the advantage of implementing the method to confirm the reinforcement by confirming the standardized performance of the process state and providing the construction quality is realized.

Through the standardized system operation applied to the reinforcing method of the ground according to the present invention, in the embodiment of the present invention, the process method of being able to be a quantitative reference while providing the progress of gelation in a short time is presented, and injection of the sealant Without it, it is possible to finish the reinforcement process by injecting only the main injection material having the composite reinforcement properties according to the present invention. Accordingly, when the main injection material is injected in the existing process, the problem of backflow generation due to material separation and insufficient gelation of the sealing material can be eliminated.

In particular, according to the embodiment of the present invention, according to the characteristics of the quantitative formulation of the main injection material having multiple properties, gelation is performed early and the gelation retention time is maintained to shorten the workability and air, and flows differently from the perforation method. Due to the long gel time, the diffusion to the surrounding ground is better than the perforation method, and when the stagnant gel time is achieved, rapid curing is achieved, and the strength (2MPa) expression time (2-3 hours) of the composition is remarkably short, resulting in early stability in the tunnel. As it is very effective for construction, it has the effect of achieving safe growth during construction and shortening of air to achieve win-win growth for clients, contractors, and suppliers.

Furthermore, the present invention enables the quality management systemization of the multi-stage grouting method of steel pipes and realizes high-quality construction, and the quality management systemization proposes construction and management standards, complies with quality standards, and is a cycle plan design that can be constructed in a short time ( Cycle Plen Design).

In addition, the inorganic composition constituting the present injection material is packaged in a small quantity of the composition corresponding to 1 batch, so that the quantified indicator can be immediately applied to the process. This makes it possible to compensate for the shortcomings of construction by weighing the required amount each time in the conventional construction site.

In particular, the grouting ordering method applying the standardized quality management system according to the embodiment of the present invention is a portable type of homogel and sandgel-only compression in order to check the homogel strength and sandgel strength in checking the strength in the main injection material. By applying the strength tester, it is possible to check the compressive strength in real time, to check whether the standardized process quality is implemented, and to perform supplementation and management, so that the quality control of the grouting process can be systemized.

This injection material composition applied to the grouting order method applying the standardized quality management system according to the embodiment of the present invention is an inorganic system, and is more environmentally friendly than the composition used in the existing method such as soda silicate and silica sol of the existing grouting method, and is initially Advantages of high strength expression in compression strength and long-term compression strength can be realized. In addition, the cement hydrate linkage is disconnected due to the leaching phenomenon by water, so that a volume reduction phenomenon is not achieved, and thus, a characteristic of quality control in the long term can be realized.

1 shows a process flow diagram of a grouting ordering method (hereinafter referred to as'the present invention') applying a standardized quality management system for reinforcing soil and tunnels according to an embodiment of the present invention.
2 is a conceptual diagram illustrating a manufacturing process of the main injection material applied to the standardized quality management system applied to FIG.
3 is a view showing a process diagram according to another embodiment of the present invention.
4 and 5 show an exemplary view of a compressive strength meter according to an embodiment of the present invention.
6 to 12 are images showing the experimental results of the compressive strength of the present injection material of the present invention.
13 to 16 are images showing a simple test process for measuring the order expression characteristics and the flow gel time of the composition according to the embodiment of the present invention.

Hereinafter, an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the embodiments, when it is determined that detailed descriptions of related known functions or configurations may unnecessarily obscure the subject matter of the present invention, detailed descriptions thereof will be omitted. In addition, the size of each component in the drawings may be exaggerated for explanation, and does not mean the size actually applied.

1 is a flowchart illustrating a method of grouting ordering method (hereinafter referred to as'the present invention') applying a standardized quality management system according to an embodiment of the present invention.

Referring to FIG. 1, the present invention provides a first order grout material (A) packet having a micro-cement and a quick-setting composition and a second reinforcement grout material (B) packet having a fluid gel time securing characteristic. The main injection material forming step of quantitatively mixing to form the main injection material, the main injection material filling step of filling the main injection material into the perforation, the curing step of curing the filled main injection material, a homogel containing the cured main injection material, or It is possible to provide a grouting method for applying a standardized quality management system including; a conformity evaluation step of determining whether a product is suitable by calculating a compressive strength through a compression strength machine by extracting a sample sample in the form of a sand gel.

The present invention according to FIG. 1 above is a process in which the process of performing the drilling process and the reinforcement process immediately by forming the main injection material according to the present invention is performed by performing drilling on the soft ground, and measuring it separately in the field construction By allowing the injection material to be formed by mixing the patch composition without quantification, it is possible to implement the convenience and standardization of construction, and by measuring the compressive strength of the sample containing the injection material to implement gelation in the process in real time, It is possible to ensure the quality of construction by confirming and reinforcing the standardized implementation of process status.

The above process corresponds to the grouting method applying a standardized quality management system for order reinforcement applied to perform the ordering method on the ground in the present invention.

Using the characteristics of the present injection material according to the present invention, applying a steel pipe to a ground such as a tunnel as shown in FIG. 3, it is also applied as a standardized quality management system to the grouting method in the case of performing a process of enhancing the order characteristics This is possible.

This, as shown in Figure 3, a first order grout material having an ordering characteristic including a perforation step of performing a perforation of the ground, a steel pipe insertion step of inserting a steel pipe into the perforation, a micro cement and a quick-setting composition ( A) a step of forming a main injection material by quantitatively mixing a packet and a packet of a second reinforcing grout (B) having the characteristics of securing the flow gel time, a main injection material injection step of filling the main injection material into the steel pipe, Hardening step of curing the mixture of the main injection material filled and the ground-generated soil contained in the perforation, extracting a sample sample in the form of a homogel or sand gel containing the cured main injection material to calculate the compressive strength through a compressive strength machine Therefore, it may be composed of a grouting ordering method applying a standardized quality management system including a conformity evaluation step for determining conformity.

The above process, in the case of a water-repellent method using a steel pipe, unlike the conventional method of applying a sealant, after inserting the steel pipe, it is possible to implement a water repellent effect only by injecting the main injection material according to the present invention, and real-time suitability evaluation in a standardized system process Afterwards, supplementation becomes possible.

Particularly, in the case of the present injection material according to the present invention, depending on the characteristics of the quantitative formulation of the main injection material having multiple properties, the water resistance is strong, so that a perfect order effect can be obtained during the construction of the water, and the characteristics of the beginner result and the final payment It is possible to increase the effect of the ground level by reliably distributing.

At the same time, gelation occurs early and maintains the gelation retention time to shorten the workability and air, and unlike the perforation method, the flow gel time is longer, so that diffusion to the surrounding ground is better than the perforation method, and also rapid hardening occurs when the stagnation gel time is achieved. Also, the composition's strength (2MPa) expression time (2~3 hours) is remarkably short, so it is very effective for early stability in the tunnel, so that it can be safely constructed during construction and shorten the air.

That is, in the present invention, in particular, the first reinforcement grout material (A) packet having a quantified order characteristic and the second reinforcement grout material (B) packet having a fluid gel time securing characteristic are quantitatively mixed to form the main injection material. The process is being implemented.

This, in the present invention, in the present grouting process, it is difficult to secure delay and quantification of the process by processes such as on-site weighing and mixing. In the present invention, as shown in FIG. 2, the injection material is divided into two types, and The patch provided with the primary grouting material (A) has a property capable of implementing rapid gelation, that is, premature gelation, as it is not diluted when added to water using a composition comprising micro cement and a quick-setting agent.

Furthermore, the patch with the second grouting material (B) is characterized by stagnant gel time, i.e., the composition is no longer infused, especially to ensure that the fluid gel time is a time during which the composition does not gel during migration. It is composed of materials having a composition that can shorten the curing time, and is classified, so that each can be provided in a quantified standard.

In particular, through the standardized system operation applied to the reinforcing method of the tunnel ground to which steel pipes are applied as shown in FIG. 3, a construction method that can be a quantitative standard while achieving gelation in a short time is presented, and without the injection of sealant. , While implementing the complex order characteristics according to the present invention, at the same time, it is possible to finish the order method by injecting only the main injection material having reinforcing characteristics. Accordingly, when the main injection material is injected in the existing process, the problem of backflow generation due to material separation and insufficient gelation of the sealing material can be eliminated.

In the case of Figure 2, as an example of implementing a standardized process implemented in the form of such a quantified patch, as an example, excellent resistance to water, and hardened in a short time to develop a first order grout material (A) Mixing the packet and the second reinforcing grout material (B) packet having the characteristics of securing the fluid gel time, when mixing in a 1:1 weight ratio, mixing the patch (1 batch) 1:1 without the need for weighing After that, the main injection material can be formed and input can be made immediately.

1 and 3 are all methods of applying the quantified main injection material of the present invention, and ensure the rapidity and reliability of the process in that the same order characteristics can be realized and the reinforcement effect can be realized without applying the existing seal material. It becomes possible.

Specifically, the first reinforcing grout material (A) packet having reinforcing properties and ensuring peripheral diffusion may be implemented in a configuration including cement, microcement, rapid setting agent, and quicklime blast furnace slag.

In this case, the micro-cement is an ultra-micronized cement and exhibits excellent properties for improving initial strength due to its good curing properties in a short time. It is preferable that the powder also has a range of 4000 to 6000 cm2/g and an average particle diameter of 4 to 7 micron. The micro cement is used at 15 to 30% by weight, and if it is less than 15% by weight, it is difficult to secure initial strength, and if it exceeds 30% by weight, it is difficult to secure initial fluidity due to rapid hardening. It is desirable to have a content in the above-mentioned range in consideration of the specificity of performing a curing mechanism in an environment in which moisture contained in the initial ground is inherent.

Micro cement, like Portland cement, is composed of inorganic materials, and has no toxicity and odor. However, the chemical composition is usually different from that of Portland cement. That is, the cement is adjusted with the components so as to prevent over-activation of hydration in the early stage due to the ultra-fine grain, and the particle size is significantly smaller than that of Portland cement. Therefore, the use of micro cement may increase the penetration rate between granules or between rock cracks than ordinary Portland cement. Particularly, in the present invention, the micro cement uses a powder with a range of 4000 to 6000 cm 2 /g and an average particle size of 4 to 7 µm, which is excellent in permeability, excellent in high strength and durability, and maximizes harmless properties to groundwater soil quality. Make it possible.

Particularly, in the present invention, when a grout material is introduced into water, it is cured in a short time while exerting resistance to water, and is used as a material for realizing strength (2 MPa or more). It is preferred to use.

As such a quick-setting material, any one selected from CSA (calcium sulfo aluminate) quick-setting quick-setting material, aluminate-based quick-setting agent, alkali-free quick-setting agent, and eco-friendly inorganic quick-setting agent may be used.

As a preferred embodiment, as the quick-setting material, CSA (calcium sulfo aluminate calcium sulfo aluminate) rapid-setting quick-setting material may be used in the range of 10.00 to 20.00% by weight. The calcium sulfoaluminate reacts in an instant in contact with water to produce Ettringite hydrate, so that the compressive strength of cement can be obtained within hours. At this time, for more rapid hydration reaction, ultrafine amorphous calcium sulfoaluminate may be used.

In this case, when less than 10 parts by weight of the calcium sulfoaluminate accelerator is included with respect to 100 parts by weight of the total grout material composition, there is a problem of initial strength deterioration and adhesive strength deterioration of the order grout material composition, exceeding 20 parts by weight In the case, the flowability of the grout material composition may be deteriorated a lot, and the problem of crack generation due to shrinkage and an appropriate compressive strength or higher may occur, resulting in an uneconomical problem compared to the amount used. It is preferable that the powder degree of the ultrafine amorphous calcium sulfoaluminate used for increasing hydration reactivity is about 5,000 to 8,000 cm 2 /g. In addition, in an embodiment of the present invention, for quick curing, it may further include quicklime and slaked lime that react with the calcium sulfoaluminate or the like to allow curing to occur.

The quicklime performs the function of accelerating the curing, so that it can contain 2.00 to 5.00% by weight, so that it can perform the function of accelerating the curing. Furthermore, the slaked lime also functions as a curing accelerator, so that it can contain 2.00 to 5.00% by weight, and slaked lime is not particularly limited and is, for example, digested with quicklime (calcium oxide:CaO) (main component is calcium hydroxide). Can be used. The slaked lime and the quicklime provide components such as CaCO ₃ , CaO, and Ca(OH) ₂ to cause a hydration reaction to generate calcium silicate hydrate (CSH) and calcium aluminate hydrate (CAH). In order to enhance the performance of hardening promotion through such a hydration reaction, it is preferable to include components of quicklime and slaked lime in the same weight% content.

In addition, the blast furnace slag powder is added, and a chemical activator for the activity of the blast furnace slag powder should be added. In order to express the activity of the blast furnace slag powder without adding such a chemical activator, a pozzolanic system in the composition of the second reinforced grout material described below Let the ultrafine powder be mixed. Examples of such a pozzolanic ultrafine powder include a cogeneration fly ash.

In addition, the first order grout material (A), in addition to the above-described main material, adsorbents, curing agents, moisturizers, condensation control materials, may be further included materials such as slaked lime.

The adsorbent is for improving the adhesion of the present injection material to the surface of the perforation, and is not limited in its kind. For example, an amine-based resin may be applied. The amine-based resin improves the adhesion between the perforation and the main injection material, thereby generating a portion of deterioration in adhesion. Is to control.

Moisturizers are used to control cracks due to premature hardening and to increase gel retention, and the moisturizers are not limited, and zinc stearate can be used as an example. The zinc stearate (zinc stearate, zinc stearate) is hydrated It reacts with soluble calcium hydroxide (Ca(OH)2) generated according to the reaction to combine fatty acid groups with hydroxyl groups to produce high-grade fatty acid calcium with high water repellency, and has excellent water repellency, reducing the absorption of moisture by capillaries in the paste. Do it.

It is used as 1-5% by weight as a condensation control agent. If it is less than 1% by weight, it is difficult to impart a hardening accelerator effect, and when it exceeds 5% by weight, there is a concern that the cement hydration reaction is lowered due to rapid curing, thereby lowering the strength characteristics. The coagulation regulator used in the present invention may be used lithium carbonate that exhibits the promoting properties of coagulation.

The slaked lime functions as a curing accelerator, and slaked lime is not particularly limited, and for example, a mixture of quicklime (calcium oxide: CaO) (main component is calcium hydroxide) may be used.

In the above-described exemplary embodiment of the present invention, CSA (calcium sulfo aluminate) rapid-hardening quick-setting material as a quick-setting composition mixed with micro cement was described.

As another embodiment, the quick-setting agent may be selected from any one of an aluminate-based quick-setting agent, an alkali-free quick-setting agent, and an eco-friendly inorganic quick-setting agent. This can realize the advantage of enhancing the water-repellent performance by implementing the quick-cutting characteristics while considering the eco-friendly factors. The aluminate-based fastening agent is less likely to cause environmental pollution than the conventional silicate-based fastening agent, and reacts violently with calcium oxide and calcium sulfate (CaSO ₄ ) components eluted from the cement to react with Portland cement to form needle-shaped ettring. Zite crystals can be produced and the ettringite crystals can exhibit rapid setting properties by combining cement or aggregate particles. Alkali-free fasteners are environmentally friendly by reducing the alkali content, reducing irritation to the human body, and reducing corrosion, preventing contamination by leachate or leaking water.

As an eco-friendly inorganic quick-setting agent, any component selected from calcium salts, magnesium salts, and aluminum salts that exhibit strong quick-setting properties when mixed with microcement can be used.

The first order grout material (A) provided by packetizing the standardized quality control system of the present invention described above is 10.00 to 20.00% by weight of cement, 15.00 to 30.00% by weight of micro cement (8000), and 10.00 to 20.00% by weight of quick-setting material , 2.00 to 5.00% by weight of quicklime, 5.00 to 10.00% by weight of adsorbent, 10.00 to 30.00% by weight of blast furnace slag, 1.00 to 5.00% by weight of curing agent, 1.00 to 5.00% by weight of moisturizer, 1.00 to 5.00% by weight of condensation control agent, 2.00 to 5.00 of slaked lime It can be configured to include a weight percent.

In addition, the first reinforcing grout material (B) provided by packetizing in the standardized quality control system of the present invention is characterized by stagnant gel time and features to ensure fluid gel time, which is a time during which the composition does not gel. That is, when the composition is no longer injected and stagnated, it is preferable to classify the material into a material having a composition capable of shortening the curing time, and implement each in a quantified standard. With this configuration, the main constituent material is the second reinforcement grout material (B) packet, so that it can be composed of pozzolanic ultrafine powder, sodium carbonate, natural anhydrite, and a powder fluidizing agent.

The type of pozzolanic ultrafine powder is not limited to the type of metakaolin and the like, and is incorporated into the sealant to fill the micropores to maintain a dense paste so that proper strength is exhibited. The pozzolanic ultrafine powder has a reaction mechanism that causes a pozzolanic reaction, and the average particle diameter is finer than that of the existing 1 µm, thereby reducing the hydrate production of ethringzite and M-S-H and making the internal tissue dense. In an embodiment of the present invention, it may be blended in an amount of 20.00 to 40.00% by weight, and if it is less than 20% by weight, the micropore filling rate cannot be achieved to form a desired strength, and when it exceeds 40% by weight, tissue density Too high a degree will hinder the fluidity of the product.

Sodium carbonate should have a homogel strength of 2 MPa or more, so that it can act with cement contained in the first grout patch, sodium carbonate is included. The sodium carbonate functions as a curing accelerator used to express strength early. do. In one embodiment of the present invention, sodium carbonate is preferably mixed in a ratio of 5.00 to 15.00% by weight, and less than 5% by weight cannot exhibit a curing function, and when it exceeds 15% by weight, excessive curing is promoted to obtain desired properties. It impedes penetration.

The powder flow agent is intended to minimize the amount of water to be added and to express the high fluidity is to ensure that the filling composition is tightly filled in the gap of the perforation.

Natural anhydride plaster, quicklime and slaked lime also function as curing accelerators. The slaked lime and the quicklime provide components such as CaCO ₃ , CaO, and Ca(OH) ₂ to cause a hydration reaction to generate calcium silicate hydrate (CSH) and calcium aluminate hydrate (CAH).

In addition, the second grout material may also be embodied in a composition further comprising an early strength enhancing material, a curing agent, and a condensation control material.

As a preferred example, the composition of the second reinforcing grout material (B) is pozzolanic ultrafine powder 20.00 to 40.00 wt%, sodium carbonate 5.00 to 15.00 wt%, natural anhydrite 15.00 to 30.00 wt%, powder fluidizing agent 0.10 to 1.00 wt% , 20.00 to 40.00% by weight of the early strength enhancer, 5.00 to 15.00% by weight of the curing agent, 1.00 to 15.00% by weight of slaked lime, 1.00 to 15.00% by weight of quicklime, and 1.00 to 5.00% by weight of the setting agent.

It is preferable to mix the above-described first order grout material (A) packet and the second reinforcing grout material (B) packet having a fluid gel time securing property to be mixed in a 1:1 weight ratio to be applied as the main injection material. Do.

The process of filling this injection material is not shown in the drawings, but in a construction method in which steel pipes are applied, such as tunnel reinforcement and ordering method, an injection packer is installed in the steel pipe, and the injection pump and the injection packer are connected before injection. The clean water is sent to check the blockage of the pipe, and the injection is carried out by a multi-stage injection method in which the packer device is injected several times to make effective injection from the tip of the steel pipe. Except for cases that are not multi-stage construction methods, such as direct-to-hole diameter-diameter construction methods. In addition, depending on the state of the water, after the completion of the injection step by step, the back flow of the main injection material is prevented by using a rapid setting material, and then the packer device is moved to make the injection in multiple stages.

In the present invention, the inorganic composition constituting the present injection material is packaged in a small quantity of the composition corresponding to 1 batch, so that the quantified indicator can be immediately applied to the process. This makes it possible to compensate for the shortcomings of construction by weighing the required amount each time in the conventional construction site.

In the case of the water order method according to the present invention shown in FIGS. 1 and 3, the main injection material is injected, and then a curing process is performed, and a sample sample in the form of a homogel or sandgel containing the cured main injection material is extracted and compressed. Compressive strength is calculated through a stiffener so that it can be provided with a step of determining whether the reinforcement characteristic is suitable according to the performance of the aberration method.

In order to check the homogel strength and sandgel strength in checking the strength of the main injection material, this standardized process quality can be checked by applying a compressive strength machine dedicated to the portable type of homogel and sandgel to check the compressive strength in real time. Check whether it is implemented, and make it possible to perform supplementation and management, so that the quality control of the grouting process can be systemized. Providing a construction method that can be a quantitative standard while achieving the progress of gelation in a short time, and without the injection of a sealant, it is possible to finish the reinforcing process with injection of only the main injection material having a composite reinforcement characteristic according to the present invention. Can.

4 and 5 illustrate a compression strength meter (hereinafter referred to as'this equipment') for measuring the compressive strength according to an embodiment of the present invention.

As shown, the equipment is spaced apart from the sensing module 100 including a load sensor (Load Cell), a sample plate 200 disposed adjacent to the upper portion of the sensing module, and the upper portion of the sample plate, the sample (S ) Is disposed, the fixing module 300 for fixing the sample (S) from the top, is arranged on one side of the fixing module 300 to apply a pressing force to the sample, the tensile force or compressive strength of the sample It may be configured to include a pressure module 400 collected through a load sensor and a display module 500 to display information pressed through the load sensor of the pressure module 400.

5 is a side cross-sectional view of a configuration excluding the display module 500 in the equipment of FIG. 4. As shown, the sample (S) is to implement the portable equipment for measuring the compressive strength, in the situation where the injection material is injected and gelation is performed.

The sensing module 100 including a load cell is disposed on a support plate P, and a sample plate 200 on which a sample S is mounted is disposed on the sensing module 100. Usually, the sample (S) is a cuboid-shaped block sample to be taken in the field to measure the compressive strength, so that the compression strength can be measured immediately.

When the sample (S) is mounted, the fixing module 300 is rotated to move the fixing bar 310 downward, and the fixing bar 310 pushes the fixing block 330 downward. By adhering the fixing block 330 to the top of the sample S, it is possible to grip the sample firmly (GRIP).

Subsequently, when the handle portion of the pressing module 400 is rotated, the pressing block 420 applies a pressing force downward, and the portion of the elastic block 320 that comes into contact with the pressing block 420 is a lower fixed block ( 330) is applied to the pressing force, and then the pressure is applied to the sample (S). In this case, the value of the applied pressure is sensed in the load cell 100 part and displayed in real time with a display module, through which It is possible to check in real time the compressive strength of the main injection material in the gelation state of the part where the grouting process is performed.

This, in real time, confirms whether the compressive strength (e.g., 2MPa) meets the criteria, and can be reinforced in the direction to supplement or inject additional bone injection material. Systematization of quality control by allowing uniform construction process to be implemented based on the specification of grouting method and at the same time confirming and reinforcing the deviation of minute construction according to the external environment that may occur in local soil or soil conditions There is an advantage that can be implemented as.

Hereinafter, the first order grout material (A) and the second reinforcing grout material (B) forming the present injection material of the present invention are mixed to form the present injection material, a sample block is implemented, and the compressive strength meter described above in the present invention The results measured through will be described.

[Example 1]

In Example 1 of the present invention, a composite composition obtained by mixing the above-described first order grout material composition (A) and the second reinforcing grout material composition (B) in a ratio of 1:1 (weight ratio) is realized, and the compressive strength is time zone. It was not measured. Compressive strength was measured after implementation with a standardized block structure.

The total first order grout material composition (A) and the second reinforcing grout material composition (B) were each mixed in a 1:1 compounding weight ratio so as to be compounded by 300 ml, and the total blended main injection material was 1 L. The composition of the total formulation main injection material is, in the case of the first order grout material composition (A), 10.00% by weight of cement, 15.00% by weight of micro cement (powder degree 4000), 2.00% by weight of quicklime, CSA (calcium sulfoaluminate calcium sulfo aluminate) quick-setting agent 10.00% by weight, adsorbent 5.00% by weight, blast furnace slag 10.00% by weight, curing agent 1.00% by weight, moisturizing agent 1.00% by weight, condensation control agent 1.00% by weight, calcite 2.00% by weight was implemented.

For the second reinforcing grout material composition (B), pozzolan-based ultrafine powder 20.00 wt%, sodium carbonate 5.00 wt%, natural anhydrite 15.00 wt%, powder fluidizing agent 0.10 wt%, premature strength enhancer 20.00 wt%, curing agent 5.00 wt %, slaked lime 1.00% by weight, quicklime 1.00% by weight, and condensation control material 1.00% by weight.

After mixing the first order grout material composition (A) and the second reinforcing grout material composition (B) in a ratio of 1:1 (weight ratio), and implementing the block structure as shown in FIG. 1, 2 hours, 3 hours, 4 The compressive strength after time was tested using a compressive strength tester (equipment of Fig. 4).

[Example 2]

In Example 2 of the present invention, a composite composition obtained by mixing the above-described first order grout material composition (A) and the second reinforcing grout material composition (B) in a 1:1 ratio (weight ratio) is realized, and the compressive strength is time zone. It was not measured. Compressive strength was measured after implementation with a standardized block structure.

The total first order grout material composition (A) and the second reinforcing grout material composition (B) were mixed in a 1:1 blending weight ratio so that 300 ml of each was blended, and the total blended main injection material was 1 L. The difference from Example 1 is that micro-cement powder of 6000 was also used.

In Example 2 of the present invention, a composite composition obtained by mixing the above-described first grout material (A) and the second grout material (B) in a 1:1 ratio (weight ratio) is realized, and compressive strength is measured for each time slot. . Compressive strength was measured after implementation with a standardized block structure.

For the first type composition (A), 20.00% by weight of cement, 30.00% by weight of micro cement (powder degree 6000), 5.00% by weight of quicklime, 20.00% by weight of early strength enhancer, 10.0% by weight of adsorbent, 30.00% by weight of blast furnace slag, A composition comprising 1.00% by weight of a curing agent, 1.00% by weight of a moisturizing agent, 1.00% by weight of a setting agent, and 2.00% by weight of slaked lime was implemented.

For the second type composition (B), pozzolan ultrafine powder 40.00% by weight, sodium carbonate 5.00% by weight, natural anhydrite 15.00% by weight, powder fluidizing agent 0.10% by weight, premature strength enhancer 20.00% by weight, curing agent 5.00% by weight, It was implemented with a composition comprising 1.00% by weight of slaked lime, 1.00% by weight of quicklime, and 1.00% by weight of coagulation control material.

After mixing the first type composition (A) and the second type composition (B) in a ratio of 1:1 (weight ratio), and realized as a block structure as shown in FIG. 1, 3 hours, 4 hours, 5 hours, 6 hours The subsequent compressive strength was tested using a compressive strength tester as shown in FIG. 2.

[Comparative example]

As a comparative example product, a block was prepared using a ready-made product containing silicate as a sealant. The composition of the composition is 45% by weight of a lightweight inorganic filler and 5% by weight of a powdery modifier, which is stirred into a forced mixer and stirred 50% by weight of water. After further mixing, the mixture was stirred for 2 minutes to prepare a lightweight grout material composition. For the lightweight inorganic filler, crude steel Portland cement 41 wt%, calcium aluminate 10 wt%, blast furnace slag 10 wt%, bauxite 10 wt%, waste 5% by weight of silicon powder, 5% by weight of gypsum, 5% by weight of calcium silicate, 5% by weight of sodium alkylbenzenesulfonate, 5% by weight of sepiolite, 1% by weight of perlite, 1% by weight of retarder, 1% by weight of aluminum powder and water reducing agent 1% by weight was used by mixing. A polycarboxylic acid-based water reducing agent was used as the water reducing agent, and citric acid was used as the retarding agent.

The compressive strengths of Examples 1, 2 and Comparative Examples are as follows.

In the case of the applied product of the present invention according to Example 1 and Example 2 over time, it can be confirmed that the strength of 2 MPa or more is realized within 3 hours by implementing a rapid strengthening characteristic to overcome the curing process due to premature gelation.

In particular, in the case of Example 1 and Example 2, in the case of the flow gel time of the main injection material, the property of maintaining for 10 minutes or more is seen, and in the case of the stop gel time, the gelation progresses within 20 seconds or less.

On the other hand, in the case of the comparative example, it took more than 6 hours to secure the strength of 2.0 Mpa, and even in such a case, when the pressure of the strength measurement is increased, it shows a broken property when prolonged (1 day, 2 days, 3 days or more). (Figs. 8 to 12). In addition, in the case of the comparative example, it was confirmed that the characteristics of the above-described flow gel time or stop gel time cannot be distinguished, and that such a special mechanism is not exerted.

It can be seen that, in the case of the present invention, even when the quantified grout material is patched by characteristics, very rapid curing and compressive strength are expressed. Furthermore, it is possible to overcome the disadvantages of the conventional grouting material applied with sodium silicate.

Furthermore, it is possible to carry out a water-repellent method without applying a sealant, so that a sufficient construction time can be secured due to the gelation retention time during the construction of this injector, so that it can retain the properties of preventing the influence of the injector due to the sealant. have.

13 to 15 are images showing a simplified test result of measuring the order characteristics and the flow gel time (time when the composition does not harden while moving) with the materials of Examples 1 and 2 described above.

13 and 14, a beaker containing 500 mg of water was prepared, and liquid mixtures of the compositions of Examples 1 and 2 according to the present invention described above were added in 250 mg increments to test the properties of the water-repellent material.

15, it can be seen that both of Example 1 and Example 2 do not dilute with resistance to water, and gelation proceeds within 20 seconds due to the property of rapid gelation.

Furthermore, as shown in FIG. 16, after gelation, as a result of confirming whether it is possible to secure a time during which the composition can diffuse while moving, that is, to what extent the fluid gel time is secured, curing after gelation takes place after about 2 minutes and 40 seconds. You can confirm that.

As described above, in the case of the order grout material according to the present invention, the resistance to water is strong, so that a perfect order effect can be obtained during the construction of water, and the ability to resist water against the initial resolution and the fluid gel time against completion (the composition does not harden while moving It can be confirmed that the penetration effect can be maximized due to the long time).

This, in the case of the composite of the grout material of the present invention, the gelation is made early and maintains the gelation retention time to shorten the workability and air shortening, and unlike the perforation method, the flow gel time is longer, so the diffusion to the surrounding ground is better than the perforation method. When the retention gel time is achieved, rapid curing is achieved and the strength (2MPa) expression time of the composition is remarkably short, thereby maximizing the early stability of the ground to be constructed.

In the detailed description of the present invention as described above, specific embodiments have been described. However, various modifications are possible without departing from the scope of the present invention. The technical idea of the present invention should not be limited to the above-described embodiments of the present invention, and should be determined not only by the claims, but also by the claims and equivalents.

Claims (6)

A drilling step of performing drilling on the ground;
As a micro-cement and quick-setting material having a powder size of 4000 to 6000 cm ² /g and an average particle diameter of 4 to 7 µm, CSA (calcium sulfo aluminate) rapid-hardening quick-setting material, aluminate-based quick-setting agent, alkali-free-based class Quantitatively mixes the first order grout material (A) packet with the ordering characteristics, including the quick-setting composition selected from payment and eco-friendly inorganic quick-setting agents, and the second reinforced grout material (B) packet with the characteristics of securing the fluid gel time. Forming the main injection material to form the main injection material;
A main injection material filling step of filling the main injection material with the perforation;
A curing step of curing the filled main injection material;
Containment evaluation step of extracting a sample sample in the form of a homogel or sandgel containing the cured main injection material to calculate the compressive strength through a compressive strength machine to determine suitability; includes,
The first order grout material (A) is 10.00 to 20.00% by weight of cement, 15.00 to 30.00% by weight of micro cement, 10.00 to 20.00% by weight of quick setting material, 2.00 to 5.00% by weight of quicklime, 5.00 to 10.00% by weight of adsorbent, 10.00 to blast furnace slag 30.00% by weight, 1.00 to 5.00% by weight of the curing agent, 1.00 to 5.00% by weight of the humectant, 1.00 to 5.00% by weight of the condensation control agent, and 2.00 to 5.00% by weight of the slaked lime,

The composition of the second reinforcing grout material (B) is pozzolanic ultrafine powder 20.00 to 40.00 wt%, sodium carbonate 5.00 to 15.00 wt%, natural anhydrite 15.00 to 30.00 wt%, powder fluidizing agent 0.10 to 1.00 wt%, early strength enhancement 20.00 to 40.00% by weight of ash, curing agent 5.00 to 15.00% by weight, slaked lime from 1.00 to 15.00% by weight, quicklime from 1.00 to 15.00% by weight, condensation control agent 1.00 to 5.00% by weight,
The mixing of the first order grout material (A) packet and the second reinforcing grout material (B) packet having the characteristics of securing the fluid gel time is mixed with a 1:1 weight ratio and applied as the main injection material. It is performed as a direct input process of main material without input,
The conformity assessment step,
A sensing module 100 including a load cell; A sample plate 200 disposed adjacent to the upper portion of the sensing module; A fixing module 300 which is spaced apart from the sample plate, and which fixes the sample from the top when the sample is disposed; A pressing module 400 disposed on one side of the fixing module 300 to apply a pressing force to the sample to collect tensile force or compressive strength of the sample through the load sensor; And a display module 500 that displays information pressurized through the load sensor of the pressurization module 400.
Grouting method using a standardized quality management system using composite injection materials with order characteristics.
A drilling step of performing drilling on the ground;
A steel pipe insertion step of inserting a steel pipe into the perforation;
As a micro-cement and quick-setting material having a powder size of 4000 to 6000 cm ² /g and an average particle diameter of 4 to 7 µm, CSA (calcium sulfo aluminate) rapid-hardening quick-setting material, aluminate-based quick-setting agent, alkali-free-based class Quantitatively mixes the first order grout material (A) packet with the ordering characteristics, including the quick-setting composition selected from payment and eco-friendly inorganic quick-setting agents, and the second reinforced grout material (B) packet with the characteristics of securing the fluid gel time. Forming the main injection material to form the main injection material;
A main injection material filling step of filling the main pipe with the main injection material;
A curing step of curing the mixture in which the filled main injection material and the ground-generated soil contained in the perforation are mixed;
Containment evaluation step of extracting a sample sample in the form of a homogel or sand gel containing the cured main injection material to determine the suitability by calculating the compressive strength through a compressive strength machine;
The first order grout material (A) is 10.00 to 20.00% by weight of cement, 15.00 to 30.00% by weight of micro cement, 10.00 to 20.00% by weight of quick setting material, 2.00 to 5.00% by weight of quicklime, 5.00 to 10.00% by weight of adsorbent, 10.00 to blast furnace slag 30.00% by weight, 1.00 to 5.00% by weight of the curing agent, 1.00 to 5.00% by weight of the humectant, 1.00 to 5.00% by weight of the condensation control agent, and 2.00 to 5.00% by weight of the slaked lime,
The composition of the second reinforcing grout material (B) is pozzolanic ultrafine powder 20.00 to 40.00 wt%, sodium carbonate 5.00 to 15.00 wt%, natural anhydrite 15.00 to 30.00 wt%, powder fluidizing agent 0.10 to 1.00 wt%, early strength enhancement 20.00 to 40.00% by weight of ash, curing agent 5.00 to 15.00% by weight, slaked lime from 1.00 to 15.00% by weight, quicklime from 1.00 to 15.00% by weight, condensation control agent 1.00 to 5.00% by weight,
The mixing of the first order grout material (A) packet and the second reinforcing grout material (B) packet having the characteristics of securing the fluid gel time is mixed with a 1:1 weight ratio and applied as the main injection material. It is performed as a direct input process of main material without input,
The conformity assessment step,
A sensing module 100 including a load cell; A sample plate 200 disposed adjacent to the upper portion of the sensing module; A fixing module 300 which is spaced apart from the sample plate, and which fixes the sample from the top when the sample is disposed; A pressing module 400 disposed on one side of the fixing module 300 to apply a pressing force to the sample to collect tensile force or compressive strength of the sample through the load sensor; And a display module 500 that displays information pressurized through the load sensor of the pressurization module 400.
Grouting method using a standardized quality management system using a composite injection material with order characteristics.
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