TW568946B - Grouting consolidation material - Google Patents

Abstract

A grouting consolidation material has high strength and excellent durability in spite of a low silica concentration and exhibits a long gelling time and enables seepage into a wide range as the grout for preventing the liquefaction of ground. A grouting consolidation material is obtained by mixing water glass with colloidal silica at a specified ratio or further mixing the resulting mixture with a specific amount of active silicic acid to form a stabilized alkaline silica solution as the base which is non-self curable in itself or further subjecting the resulting alkaline silica solution to dealkalization treatment to form a dealkalized silica solution as the base, and further adding an acidic reactant, another reactant, cement, slag and the like to the base.

Description

568946 A7 _ B7 V. Description of the Invention (1) [Technical Field of the Invention] The present invention provides a consolidation material for ground injection, which is related to colloidal silica and water glass (even containing active silicic acid) containing high molar ratios. ) Silicon oxide solution as the chassis, and low-silicon oxide concentration to maintain a wide range of gelation time of the ground into the consolidation material, especially when the implementation of the ground to prevent the liquefaction of the injection treatment, can be improved by continuous injection for a long time. The area of the ground, at the same time has a high solidification strength, and excellent consolidation properties, more good soil and water retention of the ground into the consolidation material. [Known technology] According to the general, ground injection materials made of water glass and colloidal silica are well-known. They have the advantages of good solidity durability, but a large amount of water glass is mixed into colloidal silica. If it does, it will instantly turn into gel. It is known to avoid this kind of instant gelation phenomenon. For example, it is known to mix high-mole ratio water glass with colloidal silica to form a self-hardening ground injection solution. [Invention aims to solve the problem] However, this type of injection solution cannot exhibit high consolidation strength because the concentration of silicon oxide is too high. At the same time, if it is used as a single injection (Liquid A) of 1.5 injection volume or 2.0 injection volume, it is restricted in use because it is a gelling agent. In view of this, the present invention has developed a paper that uses water glass and colloidal oxidized sand. The paper size is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm) (please read the precautions on the back first, then Hi this page)- Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs-4-568946 A7 __ B7 V. Description of the Invention (2), or limiting the composition of water glass, colloidal silica and active silicic acid At the same time, before injecting into the ground, select a specific blending ratio or S i 0 2 concentration that does not cause gelation itself, while maintaining a wide range of gelation time in the ground, especially to maintain a long gelation time, and It can reduce the permeability caused by the reduction of the permeability of the silica particles which is easily generated when the soil particles are continuously injected into the soil particles for a long time. Such a consolidation material according to the present invention can show a higher consolidation strength at a lower Sio2 concentration, and at the same time, there will be less unreacted water glass or reactive products, and it will also have good soil and water conservation. Efficacy. The reason is that the purpose of the present invention is to provide a colloidal silica with high molar ratio and a silica solution of water glass (even containing active silicic acid) as a chassis, and maintain a wide range of gelation time with a low silica concentration. At the same time, when the injection treatment to prevent ground liquefaction is performed, a large area of the ground can be improved through continuous injection for a long time. At the same time, it has high solidification strength, excellent consolidation, and better soil and water retention. The missing floor is filled with consolidation material. [Means for solving problems] In order to achieve the above-mentioned object of the present invention, the technical feature provided is that it contains colloidal silica and water glass, and does not generate gelated alkaline silica itself before it is injected into the ground. It is composed of a solution, in which the Sio2 concentration in the solution is 3 to 13% by weight, and the amount of 3102 in the colloidal silica is 1 to 50% by weight. This paper size is in accordance with China National Standard (CNS) A4 (210 X 297 mm) _ 5-ί III —Γ II —Γ III · II (Please read the precautions on the back before β page) ·---- Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 568946 A7 B7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs V. Invention Description (3) In addition, in order to achieve the above-mentioned object of the present invention, another technology is also provided. It is characterized in that it is an alkaline silica solution containing colloidal silica, water glass and active silicic acid, wherein the concentration of S i 0 2 in the solution is 3 to 13% by weight, and S i derived from colloidal silica. The amount of 2 is 1 to 50% by weight. [A preferred embodiment of the invention] Hereinafter, the present invention will be described in detail. The above-mentioned consolidation material for floor injection according to the present invention is an alkaline silica solution prepared by colloidal silica and water glass (or even containing these two compounds, in addition to these two compounds) as described above. The above colloidal silica is colloidal in nature, and when it is alone, it is a semi-permanent non-gelatinous stable substance. An example of the manufacturing example is described later. First, dilute the water glass with water and use an ion-exchange resin or an ion-exchange layer to perform alkali removal treatment to obtain P Η 2 ~ 4 active silicic acid 0 ′. Second, add water to the prepared active silicic acid Alkali agents such as glass, caustic alkali, etc., adjust ρ 的 to an alkaline solution of about 8. 5 to 10, and adjust the concentration of S 10 2 to about 3 to 5%, then at 70 to 9 5 ° C After heating and granulating for about 1 to 5 hours at a temperature, a colloidal silica mother liquor can be obtained. Usually, the mother liquor is concentrated to a Si 0 2 concentration of 20 to 30% to become the final colloidal silica. However, in the present invention, the mother liquor can be directly used as the colloidal silica. (Please read the note on the back-re-live this page first) • Thread. This paper size is applicable to Chinese National Standard (CNS) A4 (210 X 297 mm) -6-568946 A7 _____ B7 Employee Consumer Cooperative of Intellectual Property Bureau, Ministry of Economic Affairs Printing 5. Description of the invention (4) The molar ratio of the water glass alkali metal silicate aqueous solution used in the present invention, expressed as si〇2 / Na2〇, is preferably a higher than 3 · 4. The ear ratio is better. Of course, any mole ratio can be used as long as it does not cause gelation after mixing colloidal silica and active silicic acid. The active silicic acid used in the present invention is prepared by treating water glass with an ion exchange resin or an ion exchange layer to remove alkali components in the water glass and adjusting the p p to be lower than that of the water glass. Got. In general, in a mixed system of the above-mentioned water glass and colloidal silica, or in a mixed system with active silicic acid, if the silicon oxide (S i 0 2 concentration) is relatively thick, it will easily cause an electrical instability state. Therefore, silicon oxide aggregates electrically inhomogeneously, resulting in a locally weak situation, and it becomes difficult to form a gel with homogeneous strength. In the above-mentioned mixed system, even when the gelation time is adjusted to be longer during the preparation before injecting into the ground, after the injection, the silicon oxide is heterogeneously precipitated in the ground, and it will settle between the soil particles to form particles, resulting The phenomenon of reduced permeability will cause excessive injection pressure, or cause cracks to escape, resulting in a wide range of homogeneous consolidation effects as expected at the beginning of the design. Especially in the implementation of the prevention of ground liquefaction, a large area of land must be improved economically, so that the interval between injection holes is widened, and meanwhile, an injection point must be continuously injected for several hours or tens of hours. In order to correct the above-mentioned unreasonable situation, the present invention provides a mixed system of water glass and colloidal silica, or these mixed systems with active silicic acid, which does not gel itself before the mixed solution is injected into the ground. And determine the conditions for maintaining this stable state. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before this page · 11 pages) Order ·-• Line-568946 A7 ___ Β7 V. Description of the invention (5) That is, the present invention is based on the above-mentioned alkaline silica solution containing colloidal silica and water glass, and the S i 0 2 concentration in the solution is set to be diluted to 3 to 13% by weight, and the colloidal silica is derived from the colloidal silica. The amount of Si02 is set to 1 to 50% by weight, and preferably to 3 to 50% by weight, so that it is almost semi-permanent | non-gelated stable consolidation material before being injected into the ground. In addition, even when the amount of colloidal silica is relatively large with respect to the amount of water glass, there is a range in which it is stabilized. This range varies depending on the type of water glass and colloidal silica, so it is difficult to specify this range. However, it can be considered that the total amount of S i〇2 derived from colloidal silica out of the total amount of S i02 About 90% or more. In addition, the present invention also sets the Sio2 concentration in the alkaline silica solution containing colloidal silica, water glass, and activated silicic acid to be diluted to 3 to 13% by weight, and wherein the source is The Sio2 content of the self-colloidal silicon oxide is set to 1 to 50% by weight, and preferably to 3 to 50% by weight. 'As a result, it is almost semi-permanent non-gelatinized and stable consolidation before being injected into the ground. material. In the above, the ratio of colloidal silica to active silicic acid varies depending on these types, but it is preferable to keep the amount of Si02 derived from active silicic acid at a ratio of approximately 50% by weight or less. The alkaline silica solution mentioned above dissolves a part of colloidal silica or active silicic acid by the alkalinity of water glass. As a result, the particle size of the silicon oxide constituting the solution is formed by the retained particle size of the colloidal silica. The quotient of the particle size distribution up to the particle size of the silicic acid molecule that can be seen in the silicon oxide of water glass is a molar ratio silica solution. The Mohr comparison. The Mohr ratio of water glass is high. The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210x297). (Please read the precautions on the back before this page.) Consumption by employees of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the cooperative 568946 A7 B7 5. Description of the invention (6) However, the molar ratio is lower than colloidal silica or active silicic acid. If the Si02 concentration of the above-mentioned alkaline silica solution is outside the range of 3 to 13% by weight, in other words, when it is less than 3% by weight, the amount of S1 02 is too small and the consolidation strength will be reduced. On the contrary, if it is more than 13% by weight, the amount of S i 〇2 will be excessive, which will cause gelation itself, and stability cannot be maintained. Furthermore, if the amount of Si02 derived from colloidal silica, or the amount of SiO2 derived from colloidal silica and active silicic acid, is outside the range of 1 to 50% by weight, that is, if it is less than 1% by weight If the strength of the solidified substance during gelation will increase at the initial stage, the long-term strength will be lower and the durability will be worsened. At the same time, the gelation time in the soil will gradually decrease; otherwise If it is more than 50% by weight, the initial strength of the consolidated material will be reduced. In the relative amount of water glass, when it is attempted to stabilize by increasing the amount of colloidal silica, the initial strength of the consolidated material will be very low. Although it is not a good ordinary cement slurry, if the soil is gelled in time, If it is maintained for a long time, it is sufficient as a consolidation material for preventing liquefaction on the ground. The alkaline silica solution of the present invention has less sodium content, so using a small-scale device such as an ion-exchange resin or a column of an ion-exchange layer, it is relatively easy to perform alkali treatment on the site, and at the same time, it can form a more active Dealkali silica solution. The dealkaliated silica solution can obtain a substance that does not itself gel a system, or a substance that does not produce a gel system after a long time. The gelation system will not be produced after a long time, and if used alone, it is a good injection material for preventing liquefaction. In the present invention, the Chinese standard (CNS) A4 specification (210 X 297 mm) can be applied to the above-mentioned alkaline silica solution or de-alkali oxidation of this paper. -9-(Please read the precautions on the back before θ This page) Order · 丨. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, printed 568946 A7 B7 V. Description of the invention (7) Add a reagent to the silicon solution. The reactants can be, for example, sulfuric acid, aluminum chloride, polyaluminum chloride, sulfuric acid, organic acids (citric acid, acetic acid, etc.) and various acidic reactions which are acidic in aqueous solution, such as alkali metal salts, alkaline earth metals, etc. Non-base salts such as salt, cement, lime, gypsum, etc. For example, if an acidic reactant is added to an alkaline silica solution, and the solution is adjusted to an acidic to neutral region, it can become a cement slurry with a specific specific volume. In this case, even if sulfuric acid is no longer added, and if phosphoric acid, aluminum chloride, polyaluminum chloride, sulfuric acid, or organic reactant is used, the gelation time in the soil is shortened and the strength is also very strong. Very good, so it can be used as a ground consolidation material that can span a wide range, especially a good liquefaction prevention consolidation material. In addition, by adding a relatively small amount of various reagents to an alkaline silica solution or a debasic silica solution, a wide range of time (especially a longer gelation time) can be obtained, and the soil coagulates. Shortened consolidation material. In this case, the consolidated material has not only improved permeability, but also the durability of the consolidated material. At the same time, it can show higher strength with thinner concentration, and it can show strength earlier. Acids, phosphorus, amber, slag, slag, strong acid when the sol, acid and other acids are limited, the injection of the liquid, the gel does not have only excellent silica (please read the precautions on the back before-Xiang · Lion (This page). Line. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs [Inventive Examples] The following 'is described in detail for the embodiments of the present invention, but the present invention is not limited to these embodiments. • Using 568946 A7 B7 V. Description of the invention (8) (1) Activated silicic acid will be the water glass JI s No. 3 product (produced by Asahi Denka Co., Ltd., S i 〇 2 ·· 2 9 · 0%, N a 2 9.0 · 0%), diluted with water, to obtain a dilution of Si02: 5, 8%, Na20: 1.8%. After passing it through a hydrogen-type cation exchange resin (produced by Caiyi Fangye Co., Ltd., 7 A — A4 歹 IR — 1 2 〇 B) in the tower, it can obtain S i〇2: 5 · 8%, P Η 値 3 · 〇 active silicic acid. (The active silicic acid can be obtained with a wide range of pH depending on the degree of debasicization.) (2) Colloidal silica throws the above active silicic acid into alkaline water to form S i 0 2 with a concentration of 4% and P Η 値 9 · After 0, heating to 90 ° C, and stirring for 2 hours, a colloidal silica mother liquor can be obtained. Colloidal silica having a Sio2 content of 20% and 30.1% obtained by concentrating the mother liquor was used. The colloidal silica has an average particle diameter of 4 microns and 5 microns. Its properties are as shown in Table 1. [Table 1: No. Specific gravity S102 (%) pH average particle size (micron) 1 1.20 30.1 9.8 15 2 1.13 20.0 10.1 4 (3) Water glass ordinary water glass is used As shown in (a) below: Ϊ Ϊ S No. 3 water glass (please read the precautions on the back before I and II on this page) Ηδτ. --Line. This paper is printed by the Consumer Cooperatives of Intellectual Property Bureau of the Ministry of Economic Affairs. National Standard (CNS) A4 Specification (210 x 297 mm) -11-(4) Potassium Chloride Calcium Chloride Phosphate Sodium Bicarbonate 568946 A7 _B7 _ V. Description of the Invention (9) Glass with higher molar ratio For water glass, JIS No. 5 water glass shown in (b) below is used. (a) No. 3 water glass: specific gravity (20 ° C) 1 · 39, SiO 2 content 29 · 2%, Na 2 0 content 9 · 5%, mol ratio 3.17% of JI S3 water Glass (b) No. 5 water glass: specific gravity (20 ° C) 1 · 3 2, S i〇2 content 29 · 2%, Na2 0 content 7. 03%, Mohr ratio 3 · 75% JI S5 The water glass first-level reagent, first-level reagent, first-level reagent, first-level reagent, polyaluminum chloride (JIS) specification (5), cement, as shown in Table 2, uses Portland cement and blast furnace cement with different compositions and pulverization degrees. (Please read the precautions on the back before --- Wei page)-Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs [Table 2] Cement type Si〇2 (%) Ah〇3 (%) F e 2 0 3 (%) Ca〇 (%) Mg〇 (%) Brinell specific surface hydraulic modulus (cm2 / g) 1 Portland cement 21.9 5.3 3.1 65.1 1.4 3.28 2.15 3,200 2 Blast furnace cement 25.8 9.4 2.0 54.9 3.4 2.61 1.47 9,700 This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) 12- 568946

V. Description of the invention (10) The average particle size of the blast furnace cement of the cement type No. 2 in Table 2 is about 3 microns. (Please read the precautions on the back first, then 1 ^ this page) (6) Slag Use slag with the composition shown in Table 3.

Si〇2 (%) 〆, ^ Λ Ah〇3 (%) Fe2〇3 (%) Ca〇 (%) Mg〇 (%) Basic degree hydraulicity Brinell specific surface area (cm2 / g) 31.4 18.6 1.0 46.2 1.3 2.11 0.91 15,000 (7) The sand fine sand system uses Fengpu standard sand, and the silty sand system uses sea sand from Chiba Prefecture, Japan. 2 · Measure (1) Uniaxial compressive strength of sand gel. The sand gel of Fengpu standard sand was hermetically sealed (20 ° C) with polyvinylidene chloride. Printed compression test method for employees' cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. (2) Gelation time (a) Gel time of homogeneous gel Measured according to the inverted cup method at 20 ° C. (b) The gelation time in the soil is at 20 ° C. After mixing the cement slurry and sand, let it stand, discard the upper clear part, pierce the sand with a bamboo string, and then pull it out. Take the remaining period of the trace as the soil- 13- This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) 568946 A7 B7 V. Gelation time in the description of the invention (11), measure the time. (3) p 値 値 is measured using a glass electrode ρ Η meter. 3. Alkaline silica solution The colloidal silica is mixed with water glass, or the colloidal silica, active silicic acid and water glass are mixed to prepare an alkaline silica solution. The mixing ratio of these compounds, the Si02 concentration in the mixed solution, the amount of Si02 (%) derived from colloidal silica, or the amount of Si02 (%) derived from colloidal silica and activated silicic acid. ), And stability, as shown in Table 4. (Please read the precautions on the back before re-installing this page.) Order ·· · Thread · Printed by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs This paper is printed in accordance with China National Standard (CNS) A4 (210 X 297 mm) -14-568946 A7 B7 V. Description of the Invention (^) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs I Alkaline silica solution stability is not gelled, ungelated, ungelated, ungelated, ungelated Ungelatinized Ungelatinized Ungelatinized Ungelatinized Ungelatinized 4 to 5 months later, it was in a semi-gelatinized state. Si02 (%) and 1 1 1 1 21.4 1 Derived from colloidal silica oo 〇〇〇〇〇 〇〇〇 43.9 20.5 28.2 40.7 92.6 1 54.1 Total CN1 1 / S vyS 〇〇r- 〇m cn5 r Ή inch ο 13.9 mixing ratio (per 1000g ) Water (g) ο ON 〇〇〇〇〇〇〇〇〇〇〇〇〇〇 wo ο ι〇νο 〇〇i active silicic acid 1 (g) 1 1 1 instrument 1 1 1 1 1 〇1 1 water glass (g ) m 〇 \ σ \ 〇〇On r—Η 1 fi 1 〇1 〇cn C ^ l cn 1 1 1 〇1 〇CSI 1 ο CO 1 1 1, colloidal silica (g) No · CN1 in Table 1 · Η CN 1 τ—Η 1 1 1 1 1 τ—Η 1 1 Ο 1 1 〇, i 1 cn OQ alkaline silicon oxide solution Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Example 8 Comparative Example 3 (Please read the precautions on the back first and then re-image this page) • Line · This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 male) 568946 A7 B7 V. Description of the invention (13) From Table 4, the Si02 concentration in the alkaline silica solution is about 13% as a limit. Below this level, no gelation occurs. Steady state for semi-permanent use. Therefore, these alkaline silica solutions can be stored for a long period of time, and can be disposed of the same as the raw materials of cement slurry, and transferred from the workshop to the site to be injected. In Comparative Example 3, which was 13% or more, it was semi-gelatinized after 4 to 5 months. In addition, in Comparative Example 3, the amount of S i02 derived from colloidal silica also exceeded the range defined by the present invention. When gelation was performed using a reactant, a disadvantage of a relatively slow strength appeared. Therefore, as long as the S i02 concentration is slightly lower than 13%, almost a stable alkaline silica solution can be obtained. In Comparative Examples 1 and 2, the Si02 concentration derived from colloidal silica was 1% or less, and in Comparative Example 1, the total Si02 content was also 3% or less, which all exceeded the limits of the present invention. The range is 値. These, of course, do not cause gelation to be stable. However, as will be described later, the solid obtained with the addition of the reactant will be very soft, and the S 1 02 concentration is about the limit of about 3% '. If it is below this level, the strength will be significantly reduced. Example 7 is an example in which the method is the opposite to that of Example 6 ', and it is an example of stabilization with a large amount of colloidal silica. In Example 8, a small amount of active silicic acid was mixed and stabilized. At this time, the Si02 concentration 'of the active silicic acid in the amount of S102 from the colloidal silica and the active silicic acid was 27 · 8%, which was less than 50%. 4 · Dealkaline silica solution (please read the precautions on the back and then this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs This paper is printed in accordance with China National Standard (CNS) A4 (210x297 mm) -16-568946 A7 B7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. 5. Description of the invention (14) The alkaline silica solution described above is subjected to an alkali-removal treatment using an ion exchange resin or an ion exchange layer to obtain an alkali-repellent silica solution. The alkaline silica solution 5,000 ml obtained in Example 4 of Table 4 was mixed with a cation exchange resin 900 m 1 to obtain an alkali-removing solution of p Η 値 3 · 5 . This de-alkali oxidized sand solution has a Sio2 concentration of 7.1%, and gelation occurs in about 30 to 35 hours. In addition, instead of cation exchange resin treatment, an anion-cation exchange layer was used instead, and electrolytic dialysis treatment was performed at a current density of 3 A / dm 2. Dialysis was stopped when the pH reached 3 · 5 to obtain treatment with the above cation exchange resin. Slightly the same solution of dealkalized silica. In the treatment with a simple water glass aqueous solution having approximately the same S i 0 2 concentration, directly using a cation exchange resin to reduce p 左右 to about 3.5, a cation exchange resin of the above-mentioned several times is required. In addition, in the ion-exchange layer method, a larger number of ion-exchange layers is also required, and a long time is also required for the dialysis time. If the basic silicon oxide solution of Example 6 with a higher concentration of S i 0 2 is used to reduce p Η 値 to about 3.5 by the same treatment, the gelation time will be earlier, about 20 ~ 2 4 hours or so. These alkali-removed silica solutions are used as a ground injection consolidation material with superior permeability. In addition, because the Na ion is further removed, it is better in terms of environmental protection. 5 · Alkaline silica solution-acid reactant The paper size is applicable to the Chinese National Standard (CNS) A4 (210 X 297 mm) -17-(Please read the precautions on the back before reloading this page ___) Order: Line · 568946 A7 _B7_ V. Description of the invention (15) The basic silica solution of Example 2 in Table 4 was mixed with the phosphoric acid of the acidic reactant and adjusted to the neutral to acidic region. The results are shown in Table 5. Medium (Please read the precautions on the back before ^ —— this page) -Line · Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs-18- This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) ) 568946 A7 B7 V. Description of the invention (16) Marriage [ΰπΤΡΤΙ 28, 3.5 3.2 3.0 2.6 2.6 S 酹 Jun 酹 Π CS1 > inch ^ 1 〇CO cs ro cn — ν (Lyre) (3.0CS1) SE Pan ^ Jun. (Please read the precautions on the back before 0L0S71 00CS1 ~ 0001 0 inch ~ ocn CN1I ~ 01 inch · cnre ° inch °° 9 • Installation ___ This page: Order: (r) (r) 0 0 S6A LL 08 2 ςο 3 3 OCSI usi line-Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs

Ln 嗽 (r οοοι 驭 dz) ^ 2 paintings uncnrlf surging cn 006 a ¾ 锲 to give iH, 纒 w 丨 ⑺ 辑 辑 发 寸 嗽 I I 键 佩 佩 匡 匡 «« 0 匡 {!!; 6 Marina The paper size of this paper applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -19- 568946 A7 B7 V. Description of the invention (17) It is known from Table 5 that the consolidated material of the present invention is gelled. The gelation time can be adjusted to a long gelation time. In the same way, Example No. 3 and No. 3 water glass were used, and the SiO 2 concentration and p Η 値 were about the same. Compared with Comparative Example 4 (No. 3 water glass-phosphoric acid system), the amount of phosphoric acid in the example was compared. Very few, only about half. In addition, even if the gelation time becomes very long, the strength is completely inferior to the consolidated body. 6. Alkaline silica solution-reactant system, de-alkali silica solution-reactant system Except for Comparative Example 3, the alkaline silica solution in Table 4 is stable without gelation. A reactant can be added to the gelling phenomenon. In addition, a reactant can be added to the alkali-removing and silicon solution to adjust the gelation. The gelation time and consolidation strength of the alkaline silica solution-reactant system and the dealkaliated silica solution-reactant system are summarized in Table 6. (Please read the notes on the back before I. II on this page) Order · · Printed on the paper by the Intellectual Property Bureau Staff Consumer Cooperatives of the Ministry of Economic Affairs The paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -20- 568946 A7 B7 V. Description of the invention (18)

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Description of the invention (19) Observe Table 6 in its entirety, and the gelation time is from short time to long time It is easy to adjust the gelation time to a long time. In Examples 1 and 15 in which the amount of S iO2 derived from colloidal silica is relatively large, after 2 days, Although the strength was low, after 28 days, the strength increased considerably. Comparative Example 5 whose concentration was below the limit range of the present invention had extremely low consolidation strength. In addition, within the limit range of the present invention In the above Comparative Example 6, no increase in the consolidation strength was observed regardless of the concentration of S i 〇2 or not. This has the meaning of a reduction in the consolidation strength. Example 2 The dealkaliated silica In the case of the solution, compared with Example 17 with the same degree of S 102, although the gelation time was significantly lengthened, the strength was almost the same. Suspension type example mixed with cement and slag (Example 16) , 18, 20), compared with the conventional water glass-cement based comparative example 8, the initial strength is stronger. Although a little poor, but the long-term strength was especially enhanced. Comparative Example 7 having a relatively high S ^ 2 concentration has the disadvantage that gelation occurs instantaneously and uneven consolidated bodies are liable to occur. 7. Gelation time The gelation time of a homogeneous gel, of course, in terms of the function of preventing liquefaction, it is best to maintain the gelation time in the soil for a long time. Regarding some of the formulations with longer gelation times in Tables 5 and 6 above, the gelation time (gelation time in soil) was measured in Toyoura standard sand and marine sand in Chiba, Japan. At the same time, a comparison of conventional papers showing a longer gelation time is applicable to the paper size of China National Standard (CNS) A4 (210 X 297 mm) -22-(Please read the precautions on the back before installing ---- I. This page). Line. Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 568946 A7 _B7_ V. Description of the invention (20) The comparison results of the acidic silica gel are shown in Table 7. (Please read the precautions on the back first and then 9 pages) 0, order ·-line. The paper printed by the Employees' Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm)- 23-568946 A7 B7 V. Description of the invention (21) Avoidance of printing by employees' consumer cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs ο ο Ο ο o 〇〇ο inch VO m 〇o CN ι—Η \ < inchVO 髁 1 〇1 " ill ι ο i ο ι ο lor—H ^ sO vf v〇Csl ο οο ov〇οο ι Η CO 1-1 ο οο o inch 〇 > < ι VO, ^, shed If ο ο o Ο ο ο ο om ο οο o ο ο τ—Η o Bu CO inch ON o ο CJ boat 1 ο ι ο lo ι ο ι ο ο ο io inch l ο ο ο CO o un ο 〇Η csj ν〇m τ —Η oo cn un CN Ο o ο Junο Ο o ο ο ο ο o τ · H 〇ο ο ο ο οο ο (Ν1 o ο οο ο ^ Τ) csl ι? 〇Csl CN1 ι salt »ι ο ι ο lo ι ο ι ο ο ο ooio ο ο 狞 ο οο τ—Η υο un WO Inch οο ν io ι—H wo οο τ—Η Huai 1 If Peng Gongcancancancan S Secret 4π 4Π < Π < Π 4n 4n 〇〇m • ^ tm 赖 赖 鹤 赖 ΗΗ * Ν cn τ -· __ Η ι i VO r—H ι—Η ON 1 i Csl CNl cn CO mm Kuang Kuang μ 习 m series m ㈣ ^ ^^ unwu K wuu hair fr • fr 旮 νο VO 6 Inch ν〇r- oo ON o csl CNl CNl (N (N Oi cn σ \ 匡 丘 匡 m ㈣ • 习 修 镒 U 〇 佩 u 舾 佩 u {U IK jj (Please read the precautions on the back before— (Installation --- this page) --- line · This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) -24- 568946 Α7 Β7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (22) As can be seen from Table 7, although the conventional acidic silica sol (homogeneous gel of Comparative Example 9) showed a very long gelation time, it was significantly shortened in the soil. Especially in the case of sea sand produced in Chiba Prefecture. On the other hand, in Examples 2 4 to 31 of the present invention, the 'shortening phenomenon of the gelation time in the soil is extremely small' and the gelation time is still kept long. It is used as an injection material to prevent liquefaction and has a wide range of penetration effects. 8. Penetration test It is known from the test results that the consolidation material for floor injection of the present invention can easily adjust a wide range of gelation time, especially when it is adjusted to a long time gelation time. It does not shorten the gelation time in the soil and can have good permeability. For the sake of caution, the permeation test was performed using the experimental permeation injection test apparatus shown in Figure 1. In Fig. 1, the injection material 65 is filled in a water tank 5 having a stirrer 4 connected to the compressor 1 through the pressure gauges 2, 3. The 7 series acrylic pipe with an inner diameter of 5 Omm and a height of 1.5 m is used to divide the standard sand 8 into 9 layers of decoration. The horizontal strike method is used for each layer to form a compactness of 60% relative density. Next, the injection material 6 filled in the water tank 5 is filled with the standard sand 8 in the pressure pipe 7 at an injection pressure of 0.5 kgf / cm2 of the compressor 1. The injected material penetrates into the standard sand 8 and observes the penetration distance. In the first figure, g, 10 series switching plugs, 1 1, 12 series metal nets, and 13 series measuring cylinders. The consolidation materials and test results used in the test are as shown in Table 8. ^ The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before -fei — this Page) Order-·-Line. 568946 A7 _B7 V. Description of the invention (23. In Table 8, the penetration test N ο · 1 ~ 7 is the consolidation material of the present invention, and the penetration test N 〇 8, 9 is compared As an example of the consolidation material, No. 8 is beyond the scope defined by the present invention, and No. 9 is the conventional acidic silica sol. (Please read the precautions on the back before hanging on this page)-Line · Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -26- 568946 A7 B7 V. Description of the invention (24) Employee Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed Table 8 Penetration Test No. Penetration Test Results with Consolidation Material 1 The standard liquid 8 of the preparation liquid of Example 13 in Table 6 is uniformly penetrated throughout the entire length, and 2 is the preparation liquid of Example 11 in Table 6 3 and implemented in Table 6 Preparation solution 4 of Example 17 Preparation of Example 19 in Table 6 The liquid is uniformly consolidated 5 The liquid preparation of Example 21 in Table 6 6 The liquid preparation of Example 22 in Table 6 7 The liquid preparation of Example 23 in Table 6 Although the standard sand 8 has almost full penetration, it is about 10 cm from the top It can be found that there is an uneven portion 8 The mixing solution of Comparative Example 6 in Table 6 is uniformly penetrated from the bottom of the standard sand 8 to a height of about 1.0 to 1.1 m, but the above shows uneven penetration 9 Si〇2 about 5 Percentage of water glass-sulfuric acid-based silica sol with a pH of 2.8 only penetrates from the bottom of the standard sand 8 to a height of 40 ~ 50cm —— — — — — — — — — — II-II (Please read first Note on the back page, please fill in this page again) Order-· Thread · This paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) -27- 568946 A7 B7 V. Description of the invention (25) From Table 8 It is clearly known that in the system of the present invention of the penetration test Ν ο 1 to 6, the standard sand 8 across the entire length of the acrylic pipe 7 all produced a penetration situation, and the whole was uniformly consolidated. The penetration test Ν 〇 · 7Also belongs to the system of the present invention, but due to the very large content of water glass, It was slightly inferior to the above penetration test No. 0.1 to 6. In contrast, although the penetration test No. 0.8 of the comparative example fully showed the penetration situation, it could not completely penetrate the entire length of 1.5 m. In other words In other words, the permeation test No. 2 of the present invention is lower than the permeation test No. 8 of the comparative example in terms of homogeneous gelation time, but the permeation is inferior in spite of the fact that the latter is relatively long. In addition, in the permeation test No. 9 of the comparative example, although the gelation time of the homogeneous gel was remarkably long, the permeability was extremely poor. The above-mentioned evidence confirms that the consolidation material of the present invention has extremely superior permeability. [Effect of the invention] In summary, it is known that colloidal silica and water, glass, or active silicic acid are added, mixed at a specific ratio to make an alkaline silica solution, and the alkaline silica solution is dealkaliated. After that, a dealkaliated silica solution can be prepared. The following effects are produced when the consolidation material for floor injection uses the dealkaliated silica solution as a base material. 1 · The gelation time can be adjusted in a wide range, especially for a long time, and there is no shrinkage in the gelation time in the soil. Inject consolidation material. (Please read the precautions on the back first_page) Taxi-line · Printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives This paper is printed in accordance with Chinese National Standard (CNS) A4 (210 X 297 mm) -28- 568946 A7 ______ B7 V. Description of the invention (26) 2 · With low silicon oxide concentration ratio, it can show higher consolidation strength effect. 3. Less alkali content, it has the effect of good water quality and environmental protection. 4 · Since the alkaline silica solution is not self-hardening, it can be transported from the storage place or factory to the injection site. 5 · The alkali-removing silica solution can be easily obtained by using a small-scale device such as an ion exchange resin or a column of an ion exchange layer. 6 · Even if cement or slag is used, the gel can be homogenized and high strength can be obtained. Brief description of the diagram] Figure 1 is a schematic diagram of the injection test device used in the laboratory. [Please read the precautions on the back first. 4 ^ ___ Make this page: Order by the Intellectual Property Bureau, Ministry of Economic Affairs, Consumer Consumption Cooperatives System 1 Compressor 2 Pressure gauge 3 Pressure gauge 4 Agitator 5 Water tank 6 Consolidation material 7 Acrylic tube 8 Fengpu standard sand 9 Switching bolt 10 Switching bolt This paper applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) · 29-568946 A7 _B7 V. Description of the invention (27)

3 IX tube weight (please read the precautions on the back first, ¾—— this page) line. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. 11 Metal mesh 1 2 Metal mesh This paper applies Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) -30-

Claims (1)

56894ά ^ IKK Notice VI. Patent Application No. 89124686 Chinese Patent Application Amendment Amendment November 21, 1991 1. A consolidation material for ground injection, which is characterized in that it consists of colloidal silicon oxide and Water glass, which does not itself produce a gelled alkaline silica solution before being injected into the ground. 2. A consolidation material for ground injection, which is characterized by an alkaline silica solution containing colloidal silica and water glass, wherein the S i 〇2 concentration in the solution is 3 to 13% by weight, and is derived from The amount of Si02 in the colloidal silica is 1 to 50% by weight. 3. A consolidation material for ground injection, characterized in that it is an alkaline silica solution containing colloidal silica, water glass and active silicic acid, wherein the S i02 concentration in the solution is 3 to 1 3% by weight, and the amount of Si02 derived from colloidal silica and active silicic acid is 1 to 50% by weight. 4 · The consolidation material for floor injection as described in any one of the items 1 to 3 of the scope of the patent application is a dealkaliated silica solution that is subjected to a dealkaliating treatment of the alkali silica solution. 5 · According to any one of items 1 to 3 of the scope of patent application, the ground injection consolidating material is further prepared with a reactant. 6 · The ground-injection consolidation material as described in item 4 of the scope of patent application, and further deployed with a reagent. 7 · Consolidation material for ground injection as described in item 5 of the scope of the patent application, where the reactant is selected from acid reactants, inorganic salts, cement, and this paper is applicable to China National Standard (CNS) A4 specifications ( 210X297 mm) — (Please read the notes on the back before filling this page) Order the printed 568946 A8 B8 C8 D8 by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, the scope of the patent application and the slag. 8. As described in Item 6 of the scope of the patent application, the cement-free salt water machine for ground injection should be used as a non-reactive acid white selection agent. The opposite is the one in China and China, and (please read the notes on the back before filling this page) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -2- This paper size applies to China National Standard (CNS) A4 (210X297 Mm)