CN106630861B - Improvement and the solidification cement composition of mud rinse fill are blown suitable for Na+ ionic soils - Google Patents
Improvement and the solidification cement composition of mud rinse fill are blown suitable for Na+ ionic soils Download PDFInfo
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- CN106630861B CN106630861B CN201710030961.0A CN201710030961A CN106630861B CN 106630861 B CN106630861 B CN 106630861B CN 201710030961 A CN201710030961 A CN 201710030961A CN 106630861 B CN106630861 B CN 106630861B
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- 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
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of improvement and solidification cement compositions, including following components blowing mud rinse fill suitable for Na+ ionic soils, as mass fraction：10 parts of cement, 5.5 parts of water, 0.5 part of gypsum powder, 0.825 part of mixed depilatories；The mixed depilatories include following components, as mass fraction：1 part of calcium chloride, 1.5 parts of magnesium chloride, 1.5 parts of aluminium chloride, 1.5 parts of alum material；Wherein, alum material includes alum and green vitriol, and alum material uses alum and green vitriol 3：1 quality is formed than mixture.Using above-mentioned technical proposal, the composition is not only significantly improved by Na+The compression strength and resistance to compression early strength of the rinse fill soil cement of ionic soil, and cement soil classifiction and shearing resistance early strength are greatly improved, by the shear behavior for effectively improving soil-cement body, it is ensured that the stability of the soil body in area of constructing.
Description
Technical field
The present invention relates to technical field of civil engineering, and in particular to a kind of to blow mud rinse fill suitable for Na+ ionic soils
It administers and solidification cement composition.
Background technology
In recent years, China's Coastal Areas was from Tianjin to Zhuhai, and polder work is vigorous, such as Coastal Area in Zhejiang Province
Coastal polder work is also being carried out in Ningbo, Zhoushan, Wenzhou.Coastal industrial zone exploitation has become the weight of coastal local government
Point content, the at present coastal industrial zone work of various regions are mainly polder and enclose and cultivate the utilization in rear soil.China's southeastern coast
Polder method for processing foundation is more, and more practical is draining concretion method, is held since tidal land face absolute altitude is low and tidal land is native
It is very low to carry power, to enable soil made of polder to be used for engineering construction, it is necessary to newly make thicker topsoil, manufacturing method is normal
With " blast method+draining concretion method ", the method consolidation effect is preferable, but in regional (such as Zhejiang temperature of southeast strand saturated soft clay
State), due to lacking sand material, blast method is of high cost, and uses " blowing mud method+vacuum preloading+plastic draining board " instead, which is putting into practice
In it is successful.But these enclose and cultivate rinse fill because abutting sea, and the mud blown is all from sea surface layer filling mud, contains
A certain amount of Na+Ion, Na+The pollution of ion directly affects the chemical constitution ingredient of rinse fill, in conventional soil cement is reinforced
Compression strength is obviously poorer than general Wenzhou silt soil with shearing strength, and Na+Ionic soil is to architecture bottom layer coagulation soil property
Amount has certain corrosive effect, constantly occurs so as to cause construction project accident, such as road sinks and road piping sink, water
Phenomena such as soil intensity is difficult to improve and beam column concrete weathers；And conventional soil cement reinforces cost in Practical Project
Constantly rise, and effect is poor.
At present, it yet there are no the Na caused by blowing mud for this kind of both at home and abroad+The soil cement of ionic soil rinse fill reinforces combination
Object.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of not only significantly improve by Na+Ion
The compression strength and resistance to compression early strength of the rinse fill soil cement of pollution, and greatly improve cement soil classifiction
And shearing resistance early strength, by the shear behavior for effectively improving soil-cement body, it is ensured that the stability of the soil body in area of constructing is fitted
Improvement and the solidification cement composition of mud rinse fill are blown for Na+ ionic soils.
To achieve the above object, the present invention provides following technical solutions：One kind blowing mud filling suitable for Na+ ionic soils
The improvement of soil and solidification cement composition, including following components, as mass fraction：
The mixed depilatories include following components, as mass fraction：
Wherein, alum material includes alum and green vitriol, and alum material uses alum and green vitriol 3：1 quality is formed than mixture.
The present invention is further arranged to：The gypsum powder is white dry powder, wherein SO3Content is 42.5%, specific surface
Product 3500cm2/g。
The present invention is further arranged to：The calcium chloride be anhydrous calcium chloride, molecular weight 110.99, white particulate object,
Content >=96.0%；The magnesium chloride is Magnesium dichloride hexahydrate, white crystalline body, content >=98.0%；The aluminium chloride is three
Aluminium chloride, molecular weight 133.34, colourless transparent crystal, content >=98.0%；Alum, water white transparency crystalline solid, content >=
99.2%；Green vitriol, transparent, light green crystalline solid, content >=97%.
The present invention is further arranged to：The cement be Portland cement, strength of cement grade be R32.5 or
Ratings above, and 3d, 7d, 28d compression strength of cement are respectively 21.9MPa, 34.2MPa, 48.8MPa or more.
It is an advantage of the invention that：Compared with prior art, the present invention uses a variety of chemical material mix and match, not only obviously
It improves by Na+The compression strength and resistance to compression early strength of the rinse fill soil cement of ionic soil, and greatly improve water
Mud soil classifiction and shearing resistance early strength, by the shear behavior for effectively improving soil-cement body, it is ensured that the soil in area of constructing
The stability of body.
The invention will be further described with specific embodiment with reference to the accompanying drawings of the specification.
Description of the drawings
Fig. 1 is Na of the embodiment of the present invention+The Compressive Strength of Soil-cement Mixture analysis of experiments schematic diagram of ionic soil；
Fig. 2 is cement solidification Na+ ionic soils of embodiment of the present invention Wenzhou rinse fill composition compression strength figure；
Fig. 3 a are cement solidification Na+ ionic soils of the embodiment of the present invention Wenzhou rinse fill composition (staight scissors) shearing strength figure
One；
Fig. 3 b are cement solidification of embodiment of the present invention Na+Ionic soil Wenzhou rinse fill composition (staight scissors) shearing strength figure
Two.
Specific implementation mode
A kind of improvement and solidification cement composition, packet blowing mud rinse fill suitable for Na+ ionic soils disclosed by the invention
Following components is included, as mass fraction：
The mixed depilatories include following components, as mass fraction：
Wherein, alum material includes alum and green vitriol, and alum material uses alum and green vitriol 3：1 quality is formed than mixture.
As preferred：The gypsum powder is white dry powder, wherein SO3Content is 42.5%, specific surface area
3500cm2/g。
As preferred：The calcium chloride be anhydrous calcium chloride, molecular weight 110.99, white particulate object, content >=
96.0%；The magnesium chloride is Magnesium dichloride hexahydrate, white crystalline body, content >=98.0%；The aluminium chloride is alchlor,
Molecular weight 133.34, colourless transparent crystal, content >=98.0%；Alum, water white transparency crystalline solid, content >=99.2%；Green vitriol,
Transparent, light green crystalline solid, content >=97%.
As preferred：The cement be Portland cement, strength of cement grade be R32.5 or ratings above, and
3d, 7d, 28d compression strength of cement are respectively 21.9MPa, 34.2MPa, 48.8MPa or more.
Currently, cement solidification method in terms of curing process ground using relatively broad, but it is dirty to be directed to cement solidification processing
Correlative study and the technology for contaminating soil are less, are handled by Na especially in cement solidification+Ionic soil to blow based on mud
The soil cement reinforcement technique of rinse fill ground is less.Inventive formulation is ensuring pressure resistance aiming at the blank of the prior art
Under the premise of degree, shearing strength improve by a relatively large margin, a larger increase of cement amount is replaced with the compound additive of a small amount of this patent,
It is high-strength and economical to achieve the purpose that.
It is reinforced using this soil cement composition, is bordered on the sea by Na for rich water+Ionic soil blows mud filling soil
Area's soil nature feature carried out many experiments indoors, and optimum mix is when determining rationally section material：Na+Ionic soil dry ground powder
100 parts+cement, 10 parts+gypsum powder, 0.5 part+calcium chloride, 0.15 part+magnesium chloride, 0.225 part+aluminium chloride, 0.225 part+alum material
0.225 part (the alum material is with alum：Green vitriol=3：1 quality is formed than mixture).The composition is not only significantly improved by Na+Ion
The compression strength and resistance to compression early strength of the rinse fill soil cement of pollution, and greatly improve cement soil classifiction
And shearing resistance early strength, by the shear behavior for effectively improving soil-cement body, it is ensured that the stability of the soil body in area of constructing.
The bury that present invention process is reinforced is to blow mud method rinse fill mud, natural moisture content 71.35%, and liquid limit is
58.6%, plastic limit 26.1%,；The cement mortar ratio of mud is 0.55.
Using a variety of chemical material mix and match, using indoor 12 groups to having a competition after fully analyzing them and enhancing mechanism
It tests, to obtain optimum formula.The formula is made that effort in terms of shearing strength, compression strength, and raising that can be by a relatively large margin is faced
Mud method rinse fill is blown by the stability of the engineering soil ground of Na+ ionic soils in sea.
The present invention be directed to high-moistures to be blown pass in the stiffening basic ground of mud method rinse fill area by Na+ ionic soils
Key technology is unfolded, and implementation of the invention will make to border on the sea to be obtained more preferably more passing through in engineering construction by the rinse fill of Na+ ionic soils
The consolidation process of Ji.
The present invention is specifically described below by embodiment：
Soil sample is derived from Wenzhou Dongtou County and borders on the sea barged-in fill area building site, and takes the mud soil sample at buried depth 3.5-4.2m,
Soil sample Na+Ionic soil content is 2.05%, combined with calcium chloride, magnesium chloride, aluminium chloride, alum material (alum, green vitriol) etc. and
8%, 12%, 15% cement (ratio of mud 0.55) of a certain amount of water, gypsum powder and dry ground weight is added at compound additive
Mixing, i.e., and Na+The wet soil (dry ground powder+water+NaCl solution) of ionic soil mixes, its compression strength is tested after being sufficiently stirred
With shearing strength.
This experiment uses artificial compacting process sample preparation, divides three layers to hit and the column of a height of 10cm, a diameter of 5cm is made without lateral spacing in fact
Sample is made the cutting ring sample of direct shear test of self-control fluid pressure type static pressure instrument and sampling die, demould, weigh,
It is put into the polybag of sealing, in standard curing condition (temperature is 20 ± 3 DEG C, relative humidity 95%), maintenance to design age
(3,7,14d).Unconfined compression strength test uses YSH-2 types, and it is 1mm/min to control axial rate of straining.
Table 1
(1)Na+The influence experimental result of ion pair Compressive Strength of Soil-cement Mixture and analysis
Na+The Compressive Strength of Soil-cement Mixture test result of ionic soil is shown in Table 1 and Fig. 1, and every specimen coding has 3 in table 1
Orthogonal test is done in test block, and wherein data are 3 test block average values.From experimental result：Dredger Filling Engineering soil is with Na+Ion contains
The raising of amount, Compressive Strength of Soil-cement Mixture has obvious decline, and to reach design strength, it is necessary to more improve cement and use
Amount shows that the research of the present invention more has economy and engineering significance to significantly enhance cost.
Table 2
In table 2：1. 12% cement refers to the 12% of wet soil weight, the ratio of mud of basic group and contrast groups is 0.55；
2. basic group mixes 5% gypsum powder with contrast groups, 5% gypsum powder refers to the 5% of cement weight.
3. mixed depilatories are calcium chloride 1.5%, magnesium chloride 2.25%, aluminium chloride 2.25%, alum material 2.25%, 1.5%
(2.25%) 1.5% (2.25%) of cement weight is referred to, the proportioning of the mixed depilatories is orthogonal through 5 kinds of different ratios
The optimum mix combination that experiment obtains.
3d, 7d and 14d are indicated 3 days, 7 days and 14 days respectively.
(2) compression strength contrast and experiment and analysis
Compression test experimental result is shown in Table 2 and Fig. 2.There are 3 test blocks to do orthogonal test per specimen coding in table, wherein counting
Value is the average value of 3 test blocks.In Fig. 2：F refers to the composition orthogonal systems test data for having added mixed depilatories.
From experimental result：
A, the 2nd group, 3d, 7d, 14d compression strength compared with the 1st group (8% cement), mean intensity improves 9.27%,
7.33%, 2.83%, this shows that the increase of cement mixing content has certain effect to improving intensity；Meanwhile with the 2nd group of (12% water
Mud) on the basis of be worth, after the 3rd group of cement increases to 15%, the 2nd group of 3d-14d compressive strength rates have been respectively increased 4.55%,
14.63%, 12.84%；This shows that the raising with cement mixing content, intensity also accordingly improve；But the 3rd group increases compared with the 2nd group of intensity
Add and become apparent, therefore, from the point of view of intensity increase, cement mixing content is bigger, and intensity increase is faster.Show to blow mud rinse fill bordering on the sea
Much bigger than common silt soil of the cement mixing content of middle cement solidification, that is, solidification cost bigger.
B, Experimental comparison's group is that following cement adds mixed depilatories to be composed：
10 parts+water of cement, 5.5 parts+gypsum powder, 0.5 part+calcium chloride, 0.15 part+magnesium chloride, 0.225 part+aluminium chloride 0.225
(the alum material is with alum for 0.225 part of part+alum material：Green vitriol=3：1 quality is formed than mixture).
An apparent raising is presented from its compression strength known to table 2 and Fig. 2, is described as follows：
5th group of (12% cement+mixed depilatories) compression strength compared with the 4th group (8% cement+mixed depilatories),
3d-14d compression strength has been respectively increased 7.41%, 5.00%, 17.24%；And the 6th group (15% cement+mixed depilatories) with
5th group is compared, and the numerical value that 3d-14d compression strength is respectively increased is 18.39%, 20.00%, 13.24%；This show with
The raising of cement mixing content, intensity also accordingly improve；It can also be seen that the 6th group of (15% cement+mixed depilatories) intensity improves
It is most effective.
For 4th group of 3d, 7d compression strength compared with 14d, intensity has respectively reached 69.83%, 86.21%；And the 1st group
For 3d, 7d compression strength compared with 14d, intensity only reaches 56.98%, 72.08% respectively, this illustrates that the 4th group of addition is mixed outside compound
Early strong effect after agent significantly improves.
Contrast groups intensity improves more apparent as known from Table 2, and such as the 4th group of the 1st group of ratio, 3d-14d compression strength are respectively increased
4.44%, 3.43%, 2.06%, and enhancing is faster when age is shorter；For another example the 6th group of the 3rd group of ratio, 3d-14d compression strength
It has been respectively increased 4.33%, 2.85%, 2.04%, it is strong all to illustrate that the addition of mixed depilatories effectively raises its early stage
Degree.
Therefore, it is that compression strength compares from the 4th group, the 5th group known to the above compression strength comparative test result comprehensive analysis
Good enhancing section material composition group, the 4th group be respectively increased 4.44% than the 1st group of 3d-14d compression strength, 3.43%,
2.06%, and when age is shorter enhancing faster, but in view of the 4th group of integral strength is too low, select the 5th group to rich water border on the sea by
Na+The comprehensive consolidation process of the rinse fill ground of ionic soil is more of practical meaning, is suitable for the reinforcing of place road or field
Ground soil is reinforced comprehensively；And higher 6th group of cement mixing content then may be used with reinforcing to the based process as multi-story structure
Composition is more advantageous to building foundation deformation and better stability in this way.
Table 3
(3) shearing strength contrast and experiment and analysis
To shear strength test, since this research is contrastive study, using directly cutting suitable for high-volume test specimen
Cut experiment.Shearing strength test specimen uses area for 30cm2Cutting ring sample.Direct shearing shearing strength experimental result be shown in Table 3 and
Each specimen coding does orthogonal test by 3 test blocks in Fig. 3 a and Fig. 3 b. tables 3, wherein numerical value is the average value of 3 test blocks.
As seen from the experiment：
A, the 2nd group, 3d, 7d, 14d Shear Strength Index c values (Φ values) are respectively increased compared with the 1st group (8% cement)
13.10% (21.59%), 12.17% (18.95), 18.14 (6.61)；This shows the increase with cement mixing content, anti-to improving
Intensity is cut also to have certain effect；It is worth on the basis of the 2nd group (12% cement) simultaneously, after the 3rd group of cement increases to 15%, 3d-
14d Shear Strength Index c values (Φ values) than the 2nd group be respectively increased 14.55% (21.30%), 14.16% (16.57%),
10.58% (12.23%)；This shows that the raising with cement mixing content, shearing strength also accordingly improve；But it is the 3rd group strong compared with the 2nd group
Degree, which increases, to be become apparent, therefore from the point of view of shearing strength increase, cement mixing content is bigger, and shearing strength increase is also faster.This with it is general
The cement solidification of logical silt soil is different, and similar to the compressive strength test result of front, this, which more shows to border on the sea, blows mud punching
Banket cement solidification when cost higher, the research and development of compound additive at this time more it is necessary to.
B, shearing strength Experimental comparison group adds mixed depilatories to be composed by following cement：
10 parts+water of cement, 5.5 parts+gypsum powder, 0.5 part+calcium chloride, 0.15 part+magnesium chloride, 0.225 part+aluminium chloride 0.225
(the alum material is with alum for 0.225 part of part+alum material：Green vitriol=3：1 quality is formed than mixture).
From its shearing resistance known to table 3 and Fig. 3 a and Fig. 3 b in existing one apparent raising of intensity, it is described as follows：
5th group of (12% cement+mixed depilatories) shearing strength compared with the 4th group (8% cement+mixed depilatories),
3d-14d Shear Strength Index c values (Φ values) be respectively increased 15.40% (22.56%), 23.11% (20.44%),
38.05% (7.23%)；And the 6th group (15% cement+mixed depilatories) compared with the 5th group, 3d-14d c values (Φ values) point
Indescribably high numerical value is 20.25% (16.74%), 10.28% (8.61%), 15.34% (5.15%)；This shows with dampening
The raising of mud volume, shearing strength c values (Φ values) are also corresponding to be improved；(12% cement+compound is outer to be mixed it can also be seen that the 5th group
Agent) intensity improve it is most effective.
More apparent, such as the 4th group of the 1st group of ratio, 3d- are improved from contrast groups shearing strength known to table 3 and Fig. 3 a and Fig. 3 b
2.11% (21.28%), 2.04% (19.24%), 1.95% has been respectively increased in 14d Shear Strength Index c values (Φ values)
(18.26%), enhance faster when and age is shorter；For another example the 5th group of the 2nd group of ratio, 3d-14d Shear Strength Index c values (Φ
Value) 4.19% (22.24%), 11.99% (20.73%), 19.14% (18.96%) has been respectively increased, it all illustrates compound
The addition of outer-penetrating agent effectively raises its shearing strength, and the 5th group of c values (Φ values) are greatly improved.
Therefore, it is that compression strength is relatively good from the 5th group, the 6th group known to 3 shearing strength comparative test result comprehensive analysis of table
Enhancing section material composition group, the 5th group of the 2nd group of ratio, 3d-14d Shear Strength Index c values (Φ values) have been respectively increased 4.19%
(22.24%), 11.99% (20.73%), 19.14% (18.96%), the 6th group of the 3rd group of ratio, 3d-14d Shear Strength Index c
9.37% (17.65%), 8.19% (12.49%), 24.27% (11.45%) has been respectively increased in value (Φ values), it is clear that the 5th group
The addition of middle mixed depilatories is most effective to the raising of shearing strength, and early stage shearing strength is very good.Shear Strength Index
Raising is of great significance, because for the high-moisture that borders on the sea by Na+For the barged-in fill of ionic soil, improves shearing strength and refer to
Mark it is relatively difficult, in addition, the 5th group is more economically efficient compared to the 6th group, so, select the 5th group and border on the sea to rich water and is corroded by NaCl
Rinse fill ground comprehensive consolidation process it is more of practical meaning, but the multi-story structure based process as this area is still
It is proposed with the 6th group of composition, be more advantageous to reduction deformation and improves building shear stability.
Comprehensive Compressive Strength and shear strength test, optimum mix (the 5th group) comprehensive strength improve the most notable, this work
Journey and traditional cements solidification processing method (cement mixing content 15%+5% gypsum powders) can saving construction cost about 6%, improve intensity about
16%, so the formula is more economical and efficient, and preferably resolve the Na for blowing mud barged-in fill soil property+Pollution problem.
Above 5th group of the formula is suitable for bordering on the sea by Na+The large area for blowing mud reclaimed ground of ionic soil is reinforced (special
It is not that road is reinforced), the construction method of reinforcing can be cement mixing pile technique or grouting process.
But the based process such as multi-story structure and reinforcing to this area, it is contemplated that the deformation of building and stability
It is required that, it is proposed that use the 6th group of composition curing process, it and traditional cements solidification processing method (cement under this engineering works
Volume 18%+5% gypsum powders) compare, can saving construction cost about 5%, intensity about 14% is improved, so the formula is also economical high
Effect.And solves Na well+The concrete corrosion of 1m or so, solves building very well above and below ion pair building terrace
The foundation deformation and shear stability of object.
Therefore, in conjunction with the above indoor orthogonal experiments of two aspects, it is regional by Na to bordering on the sea to have found a kind of curing process+
The improvement for blowing mud barged-in fill engineering soil of ionic soil reinforces best enhancing section material composition with solidification soil cement：
1. the 5th group (12% cement (ratio of mud 0.55)+cement, which weighs 5% gypsum powder+cement and weighs 8.25%, compound outer to be mixed
Agent)；
The large area for blowing mud reclaimed ground that this formula is suitable for Na+ pollutions is reinforced (especially road is reinforced).
2. the 6th group (15% cement (ratio of mud 0.55)+cement, which weighs 5% gypsum powder+cement and weighs 8.25%, compound outer to be mixed
Agent)；
This formula is suitable for Na+Based process and the reinforcing of mud barged-in fill multi-story structure are blown in pollution.
The mixed depilatories include consisting of, specially：
Calcium chloride is the 1.5% of cement weight,
Magnesium chloride is the 2.25% of cement weight,
Aluminium chloride is the 2.25% of cement weight,
Alum material is the 2.25% of cement weight,
(the alum material is with alum：Green vitriol=3：1 quality is formed than mixture).
The present invention passes through Na+Mud rinse fill chemical composition analysis is blown in Wenzhou of ionic soil, finds its Ca2+、Mg2+、 Al3+
Ion, also fewer than common Wenzhou mud (and the content of this 3 kinds of ions is than Xiaoshan soil, Nanjing soil, Shanghai in the mud of common Wenzhou
Soil all much less).Now by a large amount of laboratory test, research blows mud rinse fill enhancing section material composition, solution using cement solidification
It certainly blows mud method strand and encloses and cultivates basement process and reinforcing problem that (or will encounter) has been encountered in area, especially to Na+Ionic soil
Improvement and cement solidification reinforce problem.
Due to Na+Erosion environment will change the mineralogical composition of cement rinse fill and micro- microscopical structure, make its mechanical property
It can deteriorate, durability reduces, therefore studies soil cement in Na+Mechanical characteristic under ion erosion environmental activity adds evaluation soil cement
Gu the carrying durability and long-term safety of composite foundation are of great significance.The present invention uses different soil cement match ratios,
To the barged-in fill that borders on the sea of high-moisture, high-compressibility, high salinity, it is anti-after the mixed depilatories match ratio of the addition present invention
The changing rule of Compressive Strength character and shearing strength character has found Na under reasonable and economic condition+The rinse fill of ionic soil
The improvement in area and solidification cement stabilization composition, carrying out soil cement reinforcing using the composition can efficiently improve by Na+From
The cement soil classifiction of the rinse fill of son pollution, compression strength, effectively improve deformation and the shear stability of the soil body；And
The generation of high-strength section material, the composition makes cement solidification method for strengthening with Na+Also can in rinse fill area based on ionic soil
It uses well.
Currently, enclosing and cultivating area by Na to the mud method strand of blowing in southeast strand saturated soft clay area+The rinse fill of ionic soil
Composition research or blank, this patent in the area of construction unit large area reinforce and building based process with reinforce have
There are critically important reality and practical meaning, while enclosing and cultivating the southeastern coast industrial zone strands Chui Nifa the large area profit in area soil
It is very positive with having the function of.
The present invention blows mud rinse fill by Na suitable for southeastern coast+Combination is administered in the cement solidification of the engineering soil of ionic soil
Object, in the Na of the southeastern coast weak soil based on Muddy Bottoms rinse fill+A variety of compound outer mix is mixed in the soil cement of ionic soil
Agent can preferably improve Na+The resistance to compression of the rinse fill soil cement of ionic soil, shear behavior.This is to coastal area by Na+From
The processing of the rinse fill ground of son pollution is of great significance with engineering construction.Soil cement reinforcing is carried out using this composition,
It can effectively improve by Na+The geological conditions and chemical constitution of the filling soil layer of ionic soil are coastal Na+Rushing after ionic soil
The regional engineering soil that bankets is administered provides safety, economy, reliable guarantee with engineering construction activity.
Above-described embodiment is served only for that invention is further explained to the specific descriptions of the present invention, should not be understood as
Limiting the scope of the present invention, it is non-that the technician of this field according to the content of foregoing invention makes some to the present invention
The modifications and adaptations of essence are each fallen within protection scope of the present invention.
Claims (2)
1. a kind of improvement and solidification cement composition blowing mud rinse fill suitable for Na+ ionic soils, it is characterised in that：By quality
Score meter：Including Na+100 parts of ionic soil dry ground powder, 10 parts of cement, 0.5 part of gypsum powder, 0.15 part of calcium chloride, magnesium chloride
0.225 part, 0.225 part of aluminium chloride, 0.225 part of alum material；Wherein, the alum material includes alum and green vitriol, and alum material is with alum：Green vitriol
=3：1 quality is formed than mixture.
2. a kind of improvement and solidification cement composition blowing mud rinse fill suitable for Na+ ionic soils according to claim 1
Object, it is characterised in that：The bury of reinforcing is to blow mud method rinse fill mud, natural moisture content 71.35%, and liquid limit is
58.6%, plastic limit 26.1%, the cement mortar ratio of mud is 0.55.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710030961.0A CN106630861B (en) | 2017-01-17 | 2017-01-17 | Improvement and the solidification cement composition of mud rinse fill are blown suitable for Na+ ionic soils |
Applications Claiming Priority (1)
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| CN101337800A (en) * | 2008-08-12 | 2009-01-07 | 王军 | Rubber soil-cement pile preparation for reinforcing offing corrosive soft clay foundation |
| CN101607811A (en) * | 2009-07-16 | 2009-12-23 | 王军 | A kind of slurry curing formula |
| CN102030508A (en) * | 2010-11-24 | 2011-04-27 | 潘林有 | Muddy soil cement grout applied to vertical shaft part of pedestrian underpass in saturated soft clay region |
| CN102173720A (en) * | 2011-01-26 | 2011-09-07 | 潘林有 | Muddy soil-cement double-pipe grouting process suitable for horizontal channel of pedestrian underground passage in saturated soft clay area |
| CN102786281A (en) * | 2012-05-14 | 2012-11-21 | 潘林有 | Novel formula for reclamation shoal soft soil suitable for ultra soft soil hydraulic reclamation method |
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