CN1264686A - Mortar for pouring foundation and method of pouring foundation - Google Patents
Mortar for pouring foundation and method of pouring foundation Download PDFInfo
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- CN1264686A CN1264686A CN00102782A CN00102782A CN1264686A CN 1264686 A CN1264686 A CN 1264686A CN 00102782 A CN00102782 A CN 00102782A CN 00102782 A CN00102782 A CN 00102782A CN 1264686 A CN1264686 A CN 1264686A
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- ground
- water glass
- phosphoric acid
- sio
- gelation time
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/24—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Ceramic Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Agronomy & Crop Science (AREA)
- Materials Engineering (AREA)
- Soil Sciences (AREA)
- Inorganic Chemistry (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
To obtain a grout for grouting ground which does not cause shortening of a gelation time keeping it long even if contacted with soil and sand in the ground, exhibits high permeability and is easy to adjust the gelation time in soil and therefore suitable for improvement of a large volume of soil and to provide a method for grouting ground using the same. This grouting material comprises as effective ingredients a water glass and phosphoric acid and satisfies simultaneously the following three requirements (1), (2) and (3): (1) The molar ratio (n) of the water glass is 3.6-5.0. (2) The concentration of SiO2 is 3(%)<SiO2(%)<1.7n(%). (3) The liquid property is acid to neutral. The method for grouting ground comprises injection of a rapid aggregating grout or a suspension type grout as a primary injection material followed by injection of the abovementioned grout material as a secondary injection material.
Description
The invention relates in ground, even contact with sand, can significantly not shorten gel time yet, can keep presenting high impregnability for a long time, and the burning that can be easy to be adjusted at the gelation time in the soil is annotated the mortar that ground is used, therefore be suitable for improving the large vol ground, and prevent the aqueousization construction etc. of ground, and the constructional method of using this mortar cast ground.
That tilt and darker subterranean peripheral ground etc., owing to there is underground water, and make ground have flowability, the plaster material that injects as preventing aqueousization of ground, preferably gelation time is long to be suitable for the mould material of widespread use usually, particularly can reduce the shortening of gelation time in soil, present high impregnability, solidify for a certainty, and coagulum preferably can approach the neutral mould material as far as possible.
As the long mortar of this gelation time, having developed the water glass that uses non-alkaline silica sol solution-type in the past is mortar.
Yet, the solution-type water glass of the non-alkaline silica sol of this use is mortar, in ground soaks into, contact with sand, pH value is transformed into neutrality by acidity, therefore, significantly shortened the gelation time in soil, as the mortar that is used for preventing aqueousization of ground, the burning that can not obtain broad range is annotated, nor is suitable for.
Therefore, the objective of the invention is to improve the shortcoming that exists in the above-mentioned known technology, even providing a kind of contacts with sand in ground, can significantly not shorten gelation time yet, can keep presenting the mortar that the cast ground of high impregnability is used for a long time, therefore, prevent that as being used for the mortar of aqueousization of ground from being very effective, and the constructional method of using this mortar cast ground.
For achieving the above object, according to the present invention, it is characterized in that containing effective constituent water glass and phosphoric acid, also to satisfy the condition of following (1), (2) and (3) simultaneously
(1) mol ratio of water glass (n) is 3.6～5.0.
(2) SiO
2Concentration be 3 (%)＜SiO
2(%)＜1.7n (%)
(3) fluidity is acidity～neutrality.
And then, for achieving the above object,, it is characterized in that containing water glass, phosphoric acid and from solubility polyvalent metal salt, alkali metal chloride and thionamic acid, select a kind of or several according to the present invention, as effective constituent, to satisfy the condition of following (1), (2) and (3) simultaneously.
(1) mol ratio of water glass (n) is 3.6～5.0,
(2) SiO
2Concentration be 3 (%)＜SiO
2(%)＜10.0 (%),
(3) fluidity is acidity～neutrality.
And then, for achieving the above object, according to the present invention, it is characterized in that in ground as an injecting material, inject flash set mortar or suspended mortar, behind the coarse part of filling ground, as the secondary injecting material, reinject and go up the mortar that above-mentioned cast ground is used.
The working of an invention form
Below concrete narration the present invention
Say that generally in the civil engineering of city, inject spacing and be taken as 1m usually, the unit receiving area is taken as 1m
2, 1 is classified as 0.5m, and input rate is 0.35, and injection rate is (1 * 1 * 0.5) * 0.35=175L, and injection speed is taken as 10L/min, and then injection length needs 17.5 minutes.Thereby, the gelation time that in soil, needs, the longest 17～20 minutes only.
To this, because of preventing that aqueousization from bringing during the ground of large vol soil improves, inject spacing and be taken as 4m, the unit receiving area is taken as 4 * 4=16m
2, 1 injection classification will extend, be taken as 2m, and injection rate then is (4 * 4 * 2) * 0.35 (input rate)=11200L, even the per minute discharge-amount arrives 20L/min greatly, the needed time is 11200/20=560 minute=9.3 hours.
Thereby the gelation time that needs in the soil is 9～10 hours, perhaps requires the gelation time longer than above injection length.Much less, gravel foundation as being offset, though inject with 1 minute short gelation time sometimes, however, still to keep needed gelation time, shorten gelation time significantly in injection, can hinder soak into fully solidify, the soaking into of wide scope, low pressure soak into injection.
In view of the above fact, cast ground of the present invention is poured into a mould the constructional method of ground with mortar with its, make in the soil gelation time from the short period of time (1 minute) by 10 hours, perhaps longer, can prevent that gelation time from shortening, and can in preventing aqueousization of ground, effectively improve the ground of large vol soil, below be described in detail the present invention.
1. water glass-phosphoric acid is
With the PH of non-alkaline silica sol and the graph of a relation of the gelation time of even (ホ モ) gel, thick (サ Application De) gel (Feng Pu standard sand and Chiba county produce extra large sand), the water glass in past-sulfuric acid system is shown in Fig. 1, and water glass-phosphoric acid (making with extra care) is to be shown in Fig. 2.Fig. 1,2 concentration of sodium silicate example, SiO
2Content be about 5%.
In Fig. 1,2, curve (a) (A) represents that thick gel (サ Application De ゲ Le) that even gel (ホ モ ゲ Le), curve (b) (B) represent to make with the Feng Pu standard sand, curve (c) (C) represent the thick gel carried with Chiba county product sea sand system.Need not speak more, gelation time at this moment, water glass is dense when thick, relative weak point, when thin then to long-time transformation.Thereby, when the lengthening gelation time, make concentration of sodium silicate itself thin.
When the present invention with the non-alkaline silica sol of Fig. 1 and Fig. 2 is compared by the non-alkaline silica sol that this water glass-phosphoric acid system forms, among the curve a and A of even gel, in low PH scope, the gelation time of curve a will be longer than the gelation time of curve A far away, along with PH raises, the gelation time of curve A is longer than the gelation time of curve a on the contrary.That is, the curves of curve A is more slowly than the curves of curve a.Can think that the reason that produces this situation is that the ionization constant of phosphoric acid is far smaller than sulfuric acid, with the reaction of water glass in brought out shock absorption.
When in the soil that observation has problems during gelation time, the curve b the during standard sand of Fig. 1 Zhong Feng Pu is significantly shorter than curve a, and the curve c of Chiba county when producing sea sand is significantly shorter.
Yet curve B is short unlike curve A among Fig. 2, usually is to be longer than curve A.The shortening degree of curve C is very little also, and is very long thereby the gelation time as can be known in soil can be kept.The inclination of curve is also very slow, also can keep quite long gelation time under high PH.Can think that this situation is the ionization, buffering except above-mentioned phosphoric acid, also to have played the effect of blocking metal in soil, has sheltered the metal in the soil.As above-mentioned, can distinguish, when using phosphoric acid to make non-alkaline silica sol, relatively, significantly reduced the shortening of gelation time in the soil during with usefulness sulfuric acid.As the mortar that prevents aqueousization usefulness, found great epoch-making phenomenon in other words.Even so, but say generally that the concentration of water glass thickens when thick, gelation time shortens, and when weakening, can prolong.
For the concentration that keeps suitable gelation time that prevents aqueousization and water glass, be SiO
2The kind of content and water glass, that is, the mol ratio of water glass is relevant.As the kind of water glass, find out that preferably mol ratio is the high molar ratio of 3.6～5.0 scopes.Mol ratio is the water glass more than 5, generally makes troubles to manufacturing, and expense increases, and does not also use at present.
Among the present invention, using this mol ratio is 3.6～5.0 high molar ratio water glass, can achieve the above object well, in addition, also want a small amount of as the acid amount of reagent, the consumption of additive, therefore obtainable effect be resultant of reaction amount also seldom, and reduced the amount etc. of stripping salt from the gelation thing.
As the concentration of water glass, consider the SiO in the silicon sol from gelation time and two aspects of set strength
2Be limited to 3% (%), the water glass mol ratio of the upper limit when using is relevant, finds preferably 1.7 times of mol ratio (n) of its upper limit limit.That is SiO,
2Concentration range (%) is 3 (%)＜SiO preferably
2(%)＜1.7n (%).N represents the mol ratio of water glass.When 3% when following, though impregnability is good, the certainty existing problems of solidifying, set strength significantly reduces.When finding that when 1.7n% is above gelation time is very fast, impregnability and evenly solidifying in soil are very difficult.Therefore, the present invention preferably satisfies above-mentioned each condition simultaneously.
2. water glass-phosphoric acid-additive is
From above-mentioned, clearly judge the phenomenon when having found gelation in water glass-phosphoric acid system.Therefore can adjust gelation time, obtain the enhancing of coagulum intensity,, can further improve the effect that prevents aqueousization if improve the concentration of used water glass.
Present inventors also find, make mol ratio, the silicon sol fluidity scope of used water glass in the silicon sol that forms by water glass-phosphoric acid keep afore mentioned rules, by adding water-soluble polyvalent metal salt, alkali metal chloride, thionamic acid, can obtain the adjustment of gelation, SiO
2The upper limit of concentration (concentration of water glass) can bring up to 10%, and can obtain the enhancing of intensity.
Water-soluble polyvalent metal salt and phosphatase reaction form the acid liquid that polyvalent metal and phosphoric acid exist with insoluble double salt form.This liquid and water glass produce neutralization reaction, cause the crosslinking reaction of silicon-dioxide and separating out of silicon-dioxide, at this moment we think, silicon-dioxide is that the center is separated out and become colloidal sol with the polyvalent metal phosphoric acid salt that suspends in solution, finally forms the insoluble hard cured article of phosphoric acid polyvalent metal silicate.As a result, brought the increase of intensity.And then provide a kind of injecting material composition substantially as insoluble salt, from silicon sol the composition of stripping seldom, the injection liquor also very little to environmental influence.
As water-soluble polyvalent metal salt, molysite such as alkaline earth salts such as aluminium salt, calcium chloride, magnesium chloride, iron(ic) chloride, ferric sulfate such as aluminum chloride, poly aluminium chloride, Tai-Ace S 150, alum are arranged specifically.
Alkali metal chloride generally has the effect of accelerating gelation time by the effect of small amount of alkali metal ion.Therefore, have the effect of flash set,, the occasion of need overspending time is also had the condensation effect of acceleration even gelation time is very long.And also can obtain certain effect to set strength.Specifically for example, sodium-chlor and Repone K are arranged.
Promptly use thionamic acid to replace a part of phosphoric acid, also very little to the influence of change of gelation time, can reduce the use of phosphoric acid accordingly.
What also can obtain the strengthening effect of congealed solid intensity.If a part of phosphoric acid is replaced as sulfuric acid, then approach sulfuric acid system as a whole, the result is that the characteristic of phosphoric acid obviously disappears.To this, use thionamic acid, this tendency is very little, shows above-mentioned effect.
3. raw phosphoric acid
The phosphoric acid that uses in above-mentioned 1,2 is common industrial purification of phosphoric acid, but can replace it with the raw phosphoric acid before the refinement treatment.For the manufacturing of phosphoric acid, drying process and damp process are arranged.Raw phosphoric acid before in any method, also will using refinement treatment.Raw phosphoric acid contains some SO usually
3, Fe
2O
3, Al
2O
3, SiO
2Deng impurity.Wherein ferrous components mainly exists with the form of tertiary iron phosphate, and this tertiary iron phosphate has promoter action to condensing of colloidal sol (colloid), can think and bring good effect.
4. fluidity
Pour into a mould the fluidity of ground with plaster material as the present invention, when acid, gelation time is long, and impregnability is fine, cooperates with flash set, in order to obtain the PH that hard intensity is solidified, can use neutral range, and as neutral range, spendable PH is 5～9.
5. the plaster material that uses above-mentioned cast ground to use, the constructional method of cast ground
The plaster material that can utilize the cast ground of implantation method for ground foundation construction composite casting the invention described above to use.That is, in the ground of needs cast, at first inject outstanding turbid type mortar (for example, gelation time is in 30 seconds) such as injecting material flash set mortar or cement.At this moment a injecting material also can be a plaster material as described in the present invention.Utilize this method in ground, to fill coarse part.
Then,, make the secondary injecting material, inject plaster material as described in the present invention to the above-mentioned ground that once injects.At this moment, as the secondary injecting material, owing to there is an injecting material in the plaster material in the past, though shortened gelation time, as the secondary injecting material, if use above-mentioned mortar of the present invention, then such situation can not take place, make large-scale injection become possibility.
Inventive embodiment
Below utilize embodiment to tell about the present invention in detail, but the present invention is not limited by these embodiment.
1. materials used
(1) water glass
Use is by forming the high molar ratio water glass that forms and common JIS3 water glass shown in the table 1.
Table 1
| Water glass | Proportion (20 ℃) | SiO 2(％) | Na 2O(％) | Mol ratio |
| High molar ratio water glass | ????1.32 | ????25.5 | ????7.03 | ????3.75 |
| JIS3 water glass | ????1.39 | ????29.2 | ????9.5 | ????3.17 |
(2) phosphoric acid
(a) purification of phosphoric acid
75% industrial purification of phosphoric acid, proportion (20 ℃) 1.58
(b) raw phosphoric acid
In phosphoric acid is made, be tawny, the rough phosphoric acid of phosphorus acid content about 75%, proportion (20 ℃)=1.65 before making with extra care
(3) sulfuric acid
75% commercial sulphuric acid
(4) poly aluminium chloride (ポ リ salt ア Le ミ ニ ウ system)
The poly aluminium chloride of JIS regulation
(5) calcium chloride (2 water salt)
The reagent one-level
(6) sodium-chlor
The reagent one-level
(7) thionamic acid (HOSO
2NH
2)
The reagent one-level
(8) sand
Use the Feng Pu standard sand as fine sand, use the sea sand in Chiba county as flour sand.
2. measuring method
(1) axial compression strength of thick gel
To carry out the airtight maintenance of polyvinylidene dichloride (20 ℃) of 7 days and 28 days with the thick gel that the Feng Pu standard sand is made, utilize the soil property engineering can benchmark " a native axial compression contract test method " measure.
(2) gelation time
(a) gelation time of even gel
Utilize the inverted type (カ Star プ handstand method) of cup to measure at 20 ℃.
(b) gelation time in the soil
At 20 ℃ grey slurries and sand are mixed, leave standstill, abandoning supernatant, in sand, insert
The bamboo string is extracted then, surveys as gelation time in the soil during with remaining trace
Fixed.
(3)PH
Measure with glass electrode PH meter.
3. embodiment
(1) compatibility test
Cooperation among the present invention is routine and relatively cooperate example to be shown in Table 2 in the lump
Table 2
| Embodiment No | Comparative example No | Cooperation ratio (every 1000g) | Fluid,matching | |||||||||||||||
| Water glass (g) | Phosphoric acid (g) | Sulfuric acid (g) | Additive (g) | Water (g) | ??SiO 2??(g) | PH | Gelation time (20 ℃) (branch) | Thick gel axial compression strength (Feng Pu standard sand) (kgf/cm 2) | ||||||||||
| High molar ratio | JIS3 number | Refining | Slightly | Poly aluminium chloride | Calcium chloride | Sodium-chlor | Thionamic acid | Even gel | In the soil (thick gel) | |||||||||
| The Feng Pu standard sand | The Chiba county produces sea sand | 7 days | 28 days | |||||||||||||||
| ?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9 ?10 ?11 ?12 ?13 | ?1 ?2 ?3 ?4 ?5 | ?240 ?240 ?240 ?240 ?240 ?240 ?240 ?- ?- ?160 ?160 ?160 ?160 ?160 ?350 ?110 ?300 ?400 | ?- ?- ?- ?- ?- ?- ?- ?210 ?210 ?- ?- ?- ?- ?- ?- ?- ?- ?- | ??- ??- ??- ??- ??- ??77 ??58 ??- ??- ??- ??- ??- ??- ??- ??110 ??36 ??98 ??130 | ??82 ??77 ??58 ??49 ??30 ??- ??- ??- ??- ??51 ??49 ??50 ??51 ??48 ??- ??- ??- ??- | ??- ??- ??- ??- ??- ??- ??- ??42 ??48 ??- ??- ??- ??- ??- ??- ??- ??- ??- | ??- ??- ??- ??- ??- ??- ??- ??- ??- ??- ??10 ??- ??- ??- ??10 ??- ??- ??- | ??- ??- ??- ??- ??- ??- ??- ??- ??- ??- ??- ??10 ??- ??- ??- ??- ??- ??- | ??- ??- ??- ??- ??- ??- ??- ??- ??- ??- ??- ??- ??10 ??- ??- ??- ??- ??- | ????- ????- ????- ????- ????- ????- ????- ????- ????- ????- ????- ????- ????- ????10 ????- ????- ????- ????10 | ??678 ??683 ??702 ??711 ??730 ??683 ??702 ??748 ??742 ??789 ??781 ??780 ??779 ??782 ??530 ??854 ??602 ??460 | ??6.1 ??6.1 ??6.1 ??6.1 ??6.1 ??6.1 ??6.1 ??6.1 ??6.1 ??4.1 ??4.1 ??4.1 ??4.1 ??4.1 ??8.9 ??2.8 ??7.7 ??10.2 | ??2.9 ??3.5 ??5.8 ??6.7 ??8.7 ??3.5 ??5.8 ??3.8 ??2.9 ??3.5 ??3.6 ??3.5 ??3.5 ??3.5 ??3.8 ??3.4 ??3.5 ??3.6 | ????150 ????65 ????4.0 ????1.6 ????0.3 ????60 ????3.5 ????70 ????1000 ????80 ????60 ????65 ????65 ????65 ????45 ????280 ????25 ????20 | ????210 ????100 ????4.8 ????1.9 ????0.4 ????90 ????4.2 ????3.0 ????40 ????110 ????110 ????120 ????120 ????120 ????70 ????350 ????30 ????25 | ????45 ????30 ????2.0 ????1.0 ????0.2 ????25 ????1.3 ????0.8 ????4.0 ????35 ????40 ????45 ????42 ????45 ????20 ????120 ????1.1 ????0.6 | ????2.7 ????3.2 ????3.6 ????3.8 ????4.0 ????3.0 ????3.3 ????3.7 ????4.0 ????2.0 ????2.3 ????2.2 ????2.1 ????2.3 ????4.2 ????0.7 ????3.4 ????4.1 | ????3.2 ????3.5 ????3.9 ????4.2 ????4.4 ????3.3 ????3.7 ????4.0 ????4.3 ????2.4 ????3.0 ????2.7 ????2.4 ????2.9 ????4.7 ????1.0 ????3.6 ????4.4 |
As known from Table 2, make SiO
2Concentration is identical, water glass one sulfuric acid system (comparative example No.1,2) and system of the present invention (embodiment No.1～7) compared, and under equal PH, the gelation time of even gel, though comparative example is very long, and gelation time in the soil is opposite; Embodiment is quite long.When the situation of relatively raw phosphoric acid and purification of phosphoric acid (embodiment No.6,7 and embodiment No.2,3), the gelation time of all raw phosphoric acids is long slightly, and intensity is also high slightly.Like this, the present invention is in acidity～neutrality at PH, makes in soil and can adjust gelation time, changes to for a long time from the short period of time.
When reducing SiO
2During concentration (embodiment No.8), gelation time increases certainly, but intensity has reduced.Work as SiO
2Concentration exceeds the scope of the invention and is lower than at 3% o'clock (comparative example No.3), and it is quite a lot of that intensity reduces.Otherwise, as concentration SiO
2(during 1.7 * 3.75=6.4) % (comparative example No.4), even under low PH, gelation time is also quite fast, and intensity can correspondingly not strengthen yet to surpass 1.7n.
The embodiment 9～13 that adds additive compares with the comparative examples No.8 that does not add additive, and the gelation time of even gel generally has shortening slightly, but the gelation time in the soil in contrast, demonstrates the trend that growth is arranged slightly.Intensity is enhanced significantly.But, comparative example No.5, as seen, the concentration of viscous water glass is worked as SiO
2Even reach 10% when above under low PH, the gelation time in the soil is also accelerated, and is easy to generate partial gelization.
According to more than, according to the mortar that the scope of the invention cooperates, when the PH height, when approaching neutrality, the gelation time in the soil is also accelerated, and when reducing PH, can increase, and can adjust gelation time in the soil in broad range.Particularly, under low PH, can keep gelation time quite long in the soil, and can obtain the raising of impregnability.
(2) soak into test
As from above-mentioned compatibility test result clear and definite, the present invention can easily adjust the gelation time in the soil, particularly can keep long gelation time, obtain good impregnability, for the purpose of prudent, use the injection test device that soaks in the laboratory shown in Figure 3 to carry out soaking into test.
Among Fig. 3, in tank 5, fill injecting material 6 with the agitator 4 that is connected with compressor 1 by pressure warning unit 2,3.The 7th, propylene tubulation of internal diameter 50mm, high 1m is divided into nine layers with wherein Feng Pu standard sand (below be designated as standard sand) 8, and each layer hits by level to be tamped, and makes its relative density reach 60%.
Then, by compressor 1 with 0.5kgf/cm
2Injection pressure, be pressed in the standard sand 8 in the pipe 7 being filled in injecting material 6 in the tank 5.Injecting material is impregnated in the standard sand 8, observes to soak into distance.Among Fig. 39,10 is switch valve, the 11, the 12nd, and wire netting, the 13rd, graduated cylinder, representational injecting material and test-results used in the test are shown in table 3.
Table 3
| Soak into test No | Injecting material | Inject the result | |
| Table 2 | ??PH | ||
| ??1 | Embodiment No.1 | ??2.9 | The whole length of |
| ??2 | Embodiment No.2 | ??3.5 | The whole length of |
| ??3 | Embodiment No.3 | ??5.8 | The saturable height that makes progress from the bottom of |
| ??4 | Embodiment No.7 | ??5.8 | The saturable height that makes progress from the bottom of |
| ??5 | Embodiment No.9 | ??3.6 | The whole length of |
| ??6 | Embodiment No.13 | ??3.8 | The whole length of |
| ??7 | Comparative example No.1 | ??3.8 | The saturable height that makes progress from the bottom of |
| ??8 | Comparative example No.2 | ??2.9 | The saturable height that makes progress from the bottom of |
| ??9 | Comparative example No.5 | ??3.6 | The saturable height that makes progress from the bottom of |
As can be known from the results of Table 3, in the embodiments of the invention, PH is impregnated into whole length fully when the low PH below 4, and water glass-sulfuric acid system (test No.7,8) does not observe fully yet and soaks into even under low PH.The dense thick concentration of water glass is if outside scope of the present invention (test No.9), even under low PH, also can not acquisition soak into fully.
The invention effect
Cast ground mortar of the present invention can obtain following effect:
1. in acidity～neutrality, the gelation time in the soil shortens very little.
2. in low PH scope, can keep gelation time very long in the soil.
3. in acidity～neutral range, be easy to adjust the gelation time in the soil.
According to more than, can be suitable for improving the large capacity ground as preventing aqueousization construction fortification.
The simple declaration of accompanying drawing
Fig. 1 is the correlogram of PH and the gelation time of even gel, thick gel (Feng Pu standard sand and Chiba county product sea sand) of the non-alkaline silica sol of water glass-sulfuric acid system.
Fig. 2 is the correlogram of the gelation time of the PH of non-alkaline silica sol of water glass one phosphoric acid system and even gel, thick gel (sand gel) (Feng Pu standard sand and Chiba county produce extra large sand).
Fig. 3 is the letter intention of laboratory with the injection test device.
Nomenclature
1 compressor, 7 propylene tubulations
2,3 pressure warning units, 8 Feng Pu standard sands
4 agitators, 9,10 switch valves
5 tanks, 11,12 wire nettings
6 injecting materials, 13 graduated cylinders
Claims (5)
1. pour into a mould the plaster material that ground is used for one kind, feature is to contain water glass and phosphoric acid effective constituent, and satisfies the condition of following (1), (2) and (3) simultaneously,
(1) mol ratio of water glass (n) is 3.6～5.0
(2) SiO
2Concentration is 3 (%)＜SiO
2(%)＜1.7n (%)
(3) fluidity is acidity～neutrality.
2. pour into a mould the plaster material that ground is used for one kind, feature is to contain water glass, phosphoric acid and select a kind of or several are as effective constituent from solubility polyvalent metal salt, alkali metal chloride and thionamic acid, and the condition of (1), (2) and (3) below satisfying simultaneously
(1) mol ratio of water glass (n) is 3.6～5.0
(2) SiO
2Concentration is 3 (%)＜SiO
2(%)＜10.0 (%)
(3) fluidity is acidity～neutrality
3. the plaster material of using according to the cast ground of claim 1 or 2 each records, feature is that the phosphoric acid in claim 1 or 2 is raw phosphoric acid.
4. constructional method of pouring into a mould ground, feature is in ground, as an injecting material, inject flash set mortar or outstanding turbid type mortar, behind the coarse part of filling ground, as the secondary injecting material, inject the plaster material that following cast ground is used, this plaster material contains water glass and phosphoric acid effective constituent, and satisfies the condition of following (1), (2) and (3) simultaneously, promptly
(1) mol ratio of water glass (n) is 3.6～5.0
(2) SiO
2Concentration is 3 (%)＜SiO
2(%)＜1.7n (%)
(3) fluidity is acidity～neutrality.
5. constructional method of pouring into a mould ground, feature is in ground, as an injecting material, inject flash set mortar or outstanding turbid type mortar, behind the coarse part of filling ground, as the secondary injecting material, inject the plaster material that following cast ground is used, this plaster material contains water glass, phosphoric acid and select a kind of or several as effective constituent from solubility polyvalent metal salt, alkali metal chloride and thionamic acid, and satisfies the condition of following (1), (2) and (3) simultaneously, promptly
(1) mol ratio of water glass (n) is 3.6～5.0
(2) SiO
2Concentration is 3 (%)＜SiO
2(%)＜10.0 (%)
(3) fluidity is acidity～neutrality.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JPP1146795 | 1999-02-24 | ||
| JP11046795A JP2000239661A (en) | 1999-02-24 | 1999-02-24 | Grouting material for grouting ground and method for grouting ground using same |
| JP46795/1999 | 1999-02-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1264686A true CN1264686A (en) | 2000-08-30 |
| CN1109001C CN1109001C (en) | 2003-05-21 |
Family
ID=12757281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00102782A Expired - Fee Related CN1109001C (en) | 1999-02-24 | 2000-02-22 | Mortar for pouring foundation and method of pouring foundation |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2000239661A (en) |
| KR (1) | KR100397249B1 (en) |
| CN (1) | CN1109001C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493498A (en) * | 2011-12-29 | 2012-06-13 | 荣盛建设工程有限公司 | Construction process for foundation |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100433051B1 (en) * | 2000-11-29 | 2004-05-24 | 쿄카도 엔지니어링 주식회사 | Solidifing material for pouring into ground |
| JP4780803B2 (en) * | 2008-11-14 | 2011-09-28 | 強化土エンジニヤリング株式会社 | Ground improvement method |
| JP5399573B2 (en) * | 2012-02-10 | 2014-01-29 | Ｗｉｌｌコンサルタント株式会社 | Cement-based deep-mixing additive and method for constructing improved cement-based deep-mixing treatment using this additive |
| KR102007912B1 (en) | 2019-01-08 | 2019-08-06 | 장태민 | Grout compositions for preventing earthquake and liquefaction and grouting methods using the same |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4018616A (en) * | 1974-09-13 | 1977-04-19 | Mizusawa Kagaku Kogyo Kabushiki Kaisha | Water glass composition |
| JPS5849585B2 (en) * | 1978-07-10 | 1983-11-05 | 日本化学工業株式会社 | soil stabilization method |
| FR2629495B1 (en) * | 1988-04-01 | 1993-04-30 | Soletanche | INJECTION PRODUCT FOR SEALING AND / OR CONSOLIDATION FOR FLOORS AND CONSTRUCTION MATERIALS AND METHOD FOR ITS IMPLEMENTATION |
| JPH0742458B2 (en) * | 1991-02-01 | 1995-05-10 | 強化土エンジニヤリング株式会社 | Backfill injection material |
| CN1037337C (en) * | 1991-12-27 | 1998-02-11 | 中国石油天然气总公司工程技术研究所 | Deformation-proof material of bituminous concrete pavement and its preparation method |
| JPH0794660B2 (en) * | 1992-01-29 | 1995-10-11 | 強化土エンジニヤリング株式会社 | Ground injection method |
| KR940002344A (en) * | 1992-07-15 | 1994-02-17 | 강병산 | Urethane composition used for ground grouting and its manufacturing method |
| KR940011602A (en) * | 1992-12-21 | 1994-06-21 | 시마다 슌스께 | Ground injection chemical |
| JP2869843B2 (en) * | 1993-10-20 | 1999-03-10 | 強化土エンジニヤリング株式会社 | Chemical for ground injection |
| JP2961484B2 (en) * | 1993-12-14 | 1999-10-12 | 強化土エンジニヤリング株式会社 | Chemical solution for ground injection and ground injection method using this liquid |
| KR100220651B1 (en) * | 1994-07-28 | 1999-09-15 | 기요노부 마루바시 | Curable composition and method of construction for stabilization of ground |
| KR970015108A (en) * | 1995-09-18 | 1997-04-28 | 전성원 | Double Seal Loop Molding |
| KR100194315B1 (en) * | 1997-02-26 | 1999-06-15 | 문정식 | Fast Hard Grout Material Composition |
-
1999
- 1999-02-24 JP JP11046795A patent/JP2000239661A/en active Pending
-
2000
- 2000-02-18 KR KR10-2000-0007801A patent/KR100397249B1/en not_active IP Right Cessation
- 2000-02-22 CN CN00102782A patent/CN1109001C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102493498A (en) * | 2011-12-29 | 2012-06-13 | 荣盛建设工程有限公司 | Construction process for foundation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1109001C (en) | 2003-05-21 |
| JP2000239661A (en) | 2000-09-05 |
| KR20000071355A (en) | 2000-11-25 |
| KR100397249B1 (en) | 2003-09-13 |
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