CN100535258C - Using method for soil curing agent - Google Patents
Using method for soil curing agent Download PDFInfo
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- CN100535258C CN100535258C CNB2007101461772A CN200710146177A CN100535258C CN 100535258 C CN100535258 C CN 100535258C CN B2007101461772 A CNB2007101461772 A CN B2007101461772A CN 200710146177 A CN200710146177 A CN 200710146177A CN 100535258 C CN100535258 C CN 100535258C
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- soil
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- agent
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Abstract
An application method of a soil solidify agent includes the steps as: mixing calces and/or cement and/or fly ash at 0-8% amount of soil with 0.001-0.0% of EN-1 solidify agent and soil; roll to solid.
Description
[technical field]
The present invention relates to the foundation technology field, more specifically, the present invention relates to the using method of soil-solidified-agent.
[background technology]
Soil is the main building material of the main building material, particularly highway foundation of ground.In order to make ground that enough intensity and stability be arranged, make soil can satisfy the requirement of building, just need process processing to soil.For this reason, people have studied various soil-solidified-agents and using method thereof widely.Described soil-solidified-agent is meant at normal temperatures can direct glued grogs surface or can generate the modifier of binding material with clay mineral composition (wherein mainly containing montmorillonite, illite and the kaolinite) reaction of grogs, or more concisely, described soil-solidified-agent is can improve and the material that improves the soil technology performance, and the method for the strong soil of soil-solidified-agent is to use various curing compound, adopts various technological means to make soil reach the method for the technical indicator that requires.For example CN 1067663C, CN1118535C, CN1207365C, CN1562851A, CN1257957C, CN1730836A, CN1746432A, US 4545820 and US 5824725 have described various soil-solidified-agents and in the foundation technology Application for Field.For example Chinese patent ZL 200610046607.9 discloses a kind of manufacture method of soil-solidified-agent.According to this method, earlier with 1: 2～1: 3 Al of mass ratio
2(SO
4)
3With CaCO
3The solid material uniform mixing; In above-mentioned solid mixture, add entry then, about 45: 1 of the mass ratio of water and solid mixture; Press mass ratio 30: 1 again with its mixture and mixing with soil, pave and to form the road foundation of certain intensity in predetermined place compacting.The result of use of this soil-solidified-agent is undesirable, and is undesirable to soil compatibility of different nature, and the effect that paves is not good yet.
Practice shows that also the cost of production of lime or lime and fly ash base curing compound is low, but the curing soil early strength is not high, and globality is poor, and resistance to compression and tensile strength are low, and water stability and freezing stability are also low.Cement hardener is better than above-mentioned curing compound, but also has some defectives, and for example easy fracture also can cause secondary pollution; In addition, the cost of this curing compound is higher relatively, so increased engineering cost, these problems all seriously influence its application.
Current, the environmental protection and the developing contradiction that are on the rise have appearred in China's infrastructure process.LCM provides an important channel for solving this contradiction after occurring.But because that LCM requires soil property is too high, also have many defectives such as anti-water-soluble low, intensity difference, therefore, be difficult to be used widely.
Therefore, still need new curing compound and using method thereof at present.The inventor carries out a large amount of practical studies to existing curing compound, find that the EN-1 of U.S. road nation is a kind of soil-solidified-agent of excellence, and work out fruitful using method, the many major defects that adopt method of the present invention to overcome to exist in the prior art, significantly improve the effect of this soil reinforcing agent, obtain very gratifying result in practice.
[summary of the invention]
[technical problem that will solve]
The objective of the invention is to propose a kind of using method of soil-solidified-agent for overcoming the defective that prior art exists.This method have favorable compatibility, construction effect good, be easy to marketing.
[technical scheme]
The present invention proposes a kind of using method of soil-solidified-agent, it is characterized in that this method comprises the steps:
(1) measure in curing soil gross weight 1-8% lime and/or cement and/or flyash, the 0.001-0.1% road EN-1 of nation soil-solidified-agent and surplus soil as material,
(2) adopt mixing apparatus that above-mentioned material is fully stirred, obtain uniform material,
(3) adopt rolling apparatus with described homogeneous material compacting, reach needed ground.
The U.S.'s EN-1 of road nation soil-solidified-agent is U.S. C.S.S.Technology, the soil-solidified-agent product of Inc company development, and its trade name is BOADBOND EN-1.It contains strong oxidizer, strong solvent and natural dispersing agent, these component interactions activate naturally occurring mineral binder in the soil, dissolve with mineral matter and soil particle in the soil, crystallization, absorption, diffusion, the chemical reaction of crystallization chain type again, thereby the basis of road is condensed into whole solid, stable, lasting plate structure.We find a kind of using method of this soil reinforcing agent through a large amount of practices, adopt this method that this curing compound is played one's part to the full.
Preferably, use in curing soil gross weight 0.08% tunnel EN-1 of nation soil-solidified-agent.
Described soil is one or more soil that are selected from clay, sand clay, mealiness soil or mealiness clay.
Described clay is a kind of hydrous alumino silicates, generates by containing the effect of feldspar rock through long-term weathering and geology in the earth's crust.Clay has that particle is thin, plasticity is strong, associativity is good.According to meaning of the present invention, described clay should be appreciated that it is the soil of acid and alkaline species.
According to meaning of the present invention, described sand clay should be appreciated that be acid and alkaline species natural sand clay.
According to meaning of the present invention, described mealiness soil should be appreciated that it is that particle diameter is too small, the natural mealiness soil of no cementability.
According to meaning of the present invention, described mealiness clay should be appreciated that it is the natural mealiness clay that particle diameter is too small, cementability is arranged.
Described lime is that limestone is through the resulting product of high-temperature calcination.According to meaning of the present invention, described lime should be appreciated that it is to contain calcium oxide and magnesian lime.
Described flyash is the ash that coal at high temperature burns and produced.According to meaning of the present invention, described flyash should be appreciated that it is the less coal ash of resulting particle diameter behind the coal combustion.
According to meaning of the present invention, described cement should be appreciated that it is the cement of portland slag cement, Portland pozzolana cement, Portland fly ash cement, Portland cement and so on.
According to preferred implementation of the present invention, when described soil was clay, the use amount of lime was in curing soil gross weight 1-6%.
According to preferred implementation of the present invention, when described soil was clay, the use amount of lime and cement admixture was that the weight ratio of lime and cement is 0.8-1.2: 1.6-2.4 in curing soil gross weight 1-6%.Preferably, lime and cement add respectively in the soil, mix again.Under the situation of clay, if the weight ratio of lime and cement then can cause index of plasticity too high greater than described ratio, the ground that adopts the inventive method to obtain is easy to crack; If the weight ratio of lime and cement is less than described ratio, the anti-poorly water-soluble of ground that then adopts the inventive method to obtain.Therefore, preferably, the weight ratio of this lime and cement is 1.0: 2.0.
According to preferred implementation of the present invention, when described soil was the sand clay, the use amount of lime and cement admixture was in curing soil gross weight 1-6%, the weight ratio of lime and cement 6: 1 to 1: 6.Preferably, lime and cement add respectively in the soil, mix again.Under the situation of sand clay, if the weight ratio of lime and cement greater than described ratio, the foundation strength that then adopts the inventive method to obtain is too high, easy fracture is aging; If the ground that the weight ratio of lime and cement less than described ratio, then adopts the inventive method to obtain is difficult for forming plate.Preferably, the weight ratio of this lime and cement is 1.0: 2.0.
According to preferred implementation of the present invention, when described soil was the mealiness clay, the use amount of lime and cement admixture was in curing soil gross weight 1-6%, the weight ratio 0.8-1.2 of lime and cement: 4.5-5.5.Preferably, the weight ratio of this lime and cement is 1: 5.Preferably, lime and cement add respectively in the soil, mix again.Similarly, under the situation of mealiness clay,, the weight ratio of lime and cement also can produce more above-mentioned problems if exceeding described scope.
According to preferred implementation of the present invention, when described soil was mealiness soil, the use amount of lime was in curing soil gross weight 3-6% lime.
According to preferred implementation of the present invention, when described soil was mealiness soil, the use amount of lime, cement and mixture of fly ash was in curing soil gross weight 3-6%, the weight ratio 1-2 of lime, cement, flyash: 1-2: 1.
Those skilled in the art know, described soil and lime granularity are not very crucial, generally speaking, its granularity generally should be greater than 10mm, because the granularity of these materials can cause the described road EN-1 of nation soil-solidified-agent not to be dispersed in other material greater than 10mm, thereby causes the uneven problem of intensity full and uniformly.
The water content of soil generally should be too high or too low, in highway road building technology works description arranged all, and the water content of described soil is that those skilled in the art know.
Above-mentioned mixing of materials when even, is being used at the known normally used mixing apparatus of those skilled in the art of the present technique, for example company of the mechanical Co., Ltd of the rich wound in Weifang City production Stabilized Soil mix equipment; Xuzhou City, Jiangsu Province company of letter power engineering machinery Co., Ltd produces the fixed Stabilized Soil mix of WCBD equipment, rotary cultivator etc.
In the time will mixing the material compacting, use at the known normally used rolling apparatus of those skilled in the art of the present technique, vibrating roller, light stone roller equipment etc., these equipment all are product solds in the market.
Also need use equipment such as the known land leveller of those skilled in the art of the present technique, sprinkling truck, bulldozer when in addition, implementing method of the present invention.
Adopt the ground of the inventive method building can reach the technical standard of national correlation department regulation fully, even be better than its standard.
Method of the present invention can be used for the construction of various grounds such as highway, various building, biomass pool.
[beneficial effect]
Method of the present invention can reach the supporting capacity that improves the road structure compactness, strengthens roadbed; Strengthen subgrade strength, improve road structure; Reduce the consumption of hard the coagulating property of tradition stabilizing agent, the problem that the solution conventional method makes the road embrittlement; Significantly reduce road settlement; Significantly improve the modulus of resilience of roadbed; Prolong the application life of roadbed and road; Improve the temperature stability (50 ℃～+ 70 ℃) of road structure, reduce contraction, the expansion of roadbed, prevent shrinkage crack, reduce the destruction of freeze thawing road structure; Reduce knot crack rate, the prevention road frost boiling of road structure, improve and use the anti-water-soluble of curing compound product.。
[specific embodiment]
Soil-solidified-agent using method embodiment of the present invention will more clearly realize other advantage of the present invention and feature by explanation.Following embodiment only is used to illustrate the present invention; and be not limitation of the present invention; those skilled in the art; under the situation that does not break away from the spirit and scope of the present invention; can also carry out variations and modifications to this method; but can not exceed scope of the present invention, scope of patent protection of the present invention is limited by claims.
The raw material quality analytical method:
1, cement adopts GB175 and GB1344 standard;
2, lime should meet the regulation of JC/T479, and slaked lime should meet the regulation of JC/T481;
3, flyash should meet the regulation of JTJ034.
The detection method of curing soil:
1, the curing soil unconfined compression strength test carries out according to JTJ057 (T0850)
2, the curing soil compaction test carries out according to JTJ057 (T0840)
Embodiment 1
Detection before certain use road, parking lot, the hub motor station EN-1 of nation soil-solidified-agent.
1, lime detects:
The lime place of production: Weiyuan, secondary lime;
Effective calcium and magnesia: 70.1, designing requirement: 60～65
Hydrochloric acid consumption: 23.9ml
The equivalent concentration of hydrochloric acid: 1.0482
2, soil detects: station soil brown shale
Sampling: 2000g
The soil property amount of 1. screening less than 2mm reaches 1711g, accounts for 85.6% of total soil property amount less than 2mm soil.
The soil property amount of 2. screening less than 1mm reaches 1616g, accounts for 80.8% of total soil property amount less than 1mm soil.
Liquid limit V
L=34.70; Plastic limit V
P=21.5; Index of plasticity IP=13.20
3, the gravel rubble detects: the crush values 24.94% of gathering materials.
4, the road surface base layer material heavy type is hit result of the test
1. mix according to following proportioning and obtain road surface base layer material:
By weight, rubble 35%; Soil 65%; Mix lime 5% outward
2. 1
#-10
#Optimum moisture content 2.218 weight %, 11
#-20
#Optimum moisture content 8.64 weight %
3. 1
#-10
#Maximum dry density 8.31g/cm, 11
#-20
#Maximum dry density 2.104g/cm
5, the rebound deflection before this parking lot, hub motor station construction detects
Rebound deflection detects and to get 6 points at random, detects that data are right-hand to be respectively 730,450,108, and left is respectively 760,504,72, and average integrated value is 437.33.
Two, this parking lot, hub motor station soil adds old on-the-spot detection the in the EN-1 of nation soil-solidified-agent construction back, road
1, degree of compaction detects
March 9 daily test pressure measurement solidity
An ENTRANCE left side 5.0, degree of compaction 89.52, the degree of depth of testing pits 15cm;
A left side, parking lot 22.5, degree of compaction 89.52, the degree of depth of testing pits 20cm;
The right side, parking lot 48.7, degree of compaction 99.75, the degree of depth of testing pits 17cm;
Degree of compaction average: 92.87
March 28 daily test pressure measurement solidity
Detect degree of compaction the same day, got 4 points at random
First point, degree of compaction 89.79, the degree of depth of testing pits 19cm
Second point, degree of compaction 90.45, the degree of depth of testing pits 19cm
Thirdly, degree of compaction 94.38, the degree of depth of testing pits 19cm
The 4th point, degree of compaction 91.16, the degree of depth of testing pits 19cm
Degree of compaction average: 91.45
March 29, daily test pressure measurement solidity entered the station sloping section, got 3 points at random
First point, degree of compaction 99.05, the degree of depth of testing pits 20cm
Second point, degree of compaction 98.39, the degree of depth of testing pits 20cm
Thirdly, degree of compaction 99.24, the degree of depth of testing pits 20cm
Degree of compaction average: 98.89
2, this parking lot, hub motor station adds " EN-1 of road nation soil-solidified-agent " rebound deflection detection (Class II highway rebound deflection design standard is 100)
Detected in 7 days, and got 34 points, average rebound deflection value 163.24 (rise period)
Detected in 14 days, and got 16 points, average rebound deflection value 104.63 (rise period)
Detected in 28 days, and got 16 points, average rebound deflection value 122.13 (rise period)
Detected in 45 days, and got 12 points, average rebound deflection value 56.17 (maturity period)
Detected in 60 days, and got 12 points, average rebound deflection value 46.83 (maturity period)
But conventional construction method is adopted in this parking lot, hub motor station, and the roadbed basic unit of not mixing the EN-1 of road nation soil-solidified-agent goes through got a little 18 rebound deflections detections, average deflection value 236.78 in 74 days at random.
Find out obviously that by these results the average rebound deflection value of the soil of the use road EN-1 of nation soil-solidified-agent is more much lower than conventional method.
Embodiment 2
Raw material: in the curing soil gross weight
The EN-1 of road nation soil-solidified-agent 0.018%
Yunnan laterite 94.92%
2mm quicklime 5%
The parameter of this Yunnan laterite is listed in table 1.
Table 1
| Soil name | Liquid limit % | Plastic limit % | Index of plasticity | Water content % | Dry density g/cm 3 |
| Laterite | 51.6 | 29.5 | 22 | 19.0 | 1.748 |
Use in construction of the highway normally used lorry mounted mixer with the EN-1 of road nation soil-solidified-agent and the abundant mixing of 2mm quicklime after, pour into again in the laterite of described Yunnan and carry out mixing, use then that normally used vibrating roller press carries out compacting in construction of the highway.Measure unconfined compression strength, it the results are shown in following table 2.
Table 2
| Soil | EN-1 dosage | 7 days compressive strength after immersion | 14 days compressive strength after immersion |
| Laterite+5% lime | 0 | 0.97 | 1.33 |
| Laterite+5% lime+EN-1 | 0.08％ | 1.18 | 1.77 |
As shown in Table 2, adopt method of the present invention to mix the EN-1 of road nation soil-solidified-agent and carry out firmly, compressive strength after immersion obviously obtains to improve, and can reach the requirement of the basic unit on the subbase of high class pavement and secondary road surface.
Embodiment 3 (clay)
Mostly be the sand clay on the loess plateau in China Shanxi, Shanxi.Under the situation of sand clay, the total amount of lime and cement is in curing soil gross weight 5%.
Curing soil compacting side is 300 cubic metres, and specific gravity of soil 1.65 is then used cement 2%, lime 3%, then:
Cement: 300 cubic metres * 1.65 * 2%=9.9 ton
Lime: 300 cubic metres * 1.65 * 3%=14.85 ton
Promptly need to add 9.9 tons of cement, 14.85 tons in lime, the mixed accessories gross weight amounts to 24.75 tons, and the EN-1 of road nation soil-solidified-agent consumption is in curing soil gross weight 0.018%.Lime, cement are evenly mixed with soil, add described curing compound, finish the soil solidification process, reach the requirement of the basic unit on the subbase of high class pavement and secondary road surface.
Embodiment 4
The soil of airbus production base, Tianjin is the soil of high liquid limit, high-ductility index.According to existing technology, this soil could be constructed after need changing and filling out, and can increase construction investment over ten billion RMB like this.Yet adopt the embodiment of front embodiment, use is carried out soil solidification in the required curing soil weight 0.018 weight % road EN-1 of nation soil-solidified-agent, 2 weight % lime, 2 weight % cement, adopt the inventive method to reach the engineering design requirement, release soil changes to be filled out, and has therefore saved great amount of investment.
Embodiment 5
Heilongjiang Province's Daqing Area is high and cold swamp land, and this regional frost heave of road is serious.Adopt technology of the present invention, use the road EN-1 of nation soil-solidified-agent 0.018% and 5% lime in the curing soil gross weight, handle its soil according to the processing mode of front embodiment, changed soil property, make it have high anti-water-soluble and anti-water erosion, the highway of building did not like this have serious damage, no overhaul up to now from 2000; And the employing prior art, it is bad to use the ZSS soil-solidified-agent used in this technical field to carry out the road quality of soil treating building, and overhaul has been repeatedly during described.
Claims (4)
1, a kind of using method of soil-solidified-agent is characterized in that this method comprises the steps:
(1) measure in curing soil gross weight 1-8% flyash or flyash and lime or flyash and cement or flyash and lime and cement, the 0.001-0.1% road EN-1 of nation soil-solidified-agent and surplus soil is as material,
(2) adopt mixing apparatus that above-mentioned material is fully stirred, obtain uniform material,
(3) adopt rolling apparatus with described homogeneous material compacting, reach needed ground.
2, using method according to claim 1 is characterized in that described soil is one or more soil that are selected from clay, sand clay, mealiness soil or mealiness clay.
3, the using method of soil-solidified-agent according to claim 1, when it is characterized in that soil is mealiness soil, use is in the mixture of curing soil gross weight 3-6% lime, cement and flyash, the weight ratio 1-2 of lime, cement, flyash: 1-2: 1.
4, the using method of soil-solidified-agent according to claim 1 is characterized in that using in curing soil gross weight 0.08% tunnel EN-1 of nation soil-solidified-agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101461772A CN100535258C (en) | 2007-08-24 | 2007-08-24 | Using method for soil curing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101461772A CN100535258C (en) | 2007-08-24 | 2007-08-24 | Using method for soil curing agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101100856A CN101100856A (en) | 2008-01-09 |
| CN100535258C true CN100535258C (en) | 2009-09-02 |
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ID=39035292
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| CNB2007101461772A Expired - Fee Related CN100535258C (en) | 2007-08-24 | 2007-08-24 | Using method for soil curing agent |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838985A (en) * | 2010-05-19 | 2010-09-22 | 东南大学 | Method for improving over-wet cohesive soil by using curing agent |
| CN102518119A (en) * | 2011-12-09 | 2012-06-27 | 李庆辉 | Method for mixing soil stabilizer stabilized soil |
| CN104211314A (en) * | 2014-09-05 | 2014-12-17 | 欧国文 | Cementing material and preparation method thereof |
| CN104863038B (en) * | 2015-04-08 | 2017-01-18 | 浙江师范大学 | Method for preparing lime and cement solidified soil by using soil solidification agent |
| CN104805826B (en) * | 2015-04-08 | 2017-01-04 | 浙江师范大学 | A kind of method utilizing soil-solidified-agent to prepare solidified earth |
| KR101597519B1 (en) * | 2015-04-23 | 2016-02-25 | (유)신기Ati | Continuous soil solidification processing method and apparatus for preventing yellow dust and constructing meadow in desertificated area |
| CN109294594A (en) * | 2018-11-09 | 2019-02-01 | 西南科技大学城市学院 | A kind of silty soil modifying agent and its application in silty soil improvement |
| CN111946347B (en) * | 2020-06-24 | 2022-07-22 | 上海市园林设计研究总院有限公司 | Method for ecological restoration of coal mining subsidence area by using river sediment resource |
| CN112482155B (en) * | 2020-11-24 | 2022-04-19 | 中国水利水电第九工程局有限公司 | Road side glue pavement construction method for inhibiting dust emission and environment-friendly transportation |
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2007
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