CN100500608C - Rubber soil-cement pile for reinforcing offing corrosive soft clay foundation - Google Patents
Rubber soil-cement pile for reinforcing offing corrosive soft clay foundation Download PDFInfo
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- CN100500608C CN100500608C CNB2008101470278A CN200810147027A CN100500608C CN 100500608 C CN100500608 C CN 100500608C CN B2008101470278 A CNB2008101470278 A CN B2008101470278A CN 200810147027 A CN200810147027 A CN 200810147027A CN 100500608 C CN100500608 C CN 100500608C
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- cement
- rubber
- soil
- pile
- solidifying agent
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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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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention relates to civil engineering, in particular to the technical field of a corrosion-proof rubber cement earth pillar used for treatment of inshore corrosive soft clay foundation in road engineering. In the rubber cement earth pillar, fine rubber powder with the particle size of 200 meshes substitutes for part of cement based on the prior treatment method of cement earth pillar composite foundation to improve the corrosion resistance of soil cement. Compared with Portland cement earth pillars, the rubber cement earth pillars have higher impermeability and corrosion resistance. In addition, as rubber powder is added to the cement earth pillars, the problems of cyclic utilization of scrap rubber, environmental pollution and so on are solved.
Description
Technical field
The present invention relates to civil engineering work, road engineering coastal waters corrodibility soft clay foundation is handled a kind of anti-corrosive rubber cement earth pile technical field of usefulness.
Background technology
Along with developing of automobile industry, " black pollution " that increasing junked tire forms threatening us.Data shows, 2006, China's tire output is up to 2.8 hundred million, rank first in the world, the junked tire that produces then also reaches more than 1.4 hundred million simultaneously, about 3,600,000 tons, and with double-digit speed increment in every year, junction, domestic many local suburbs can both be seen to be continuous and go up the junked tire accumulation point of km as hill.Junked tire has very strong heat resistanceheat resistant, anti-machinery and anti-degradation property, if be discarded in the physical environment, many decades can not cleared up naturally, not only land occupation, and serious environment pollution.In addition, junked tire is inflammable, and fire spreading is very fast when on fire, the time of putting out a fire to save life and property is long, black smoke that burning simultaneously generates can cause serious pollution to air.This " black pollution " will cause huge harm to environment as not handling early.Thereby, the problem of recovery and Utilization of Wastetires is more and more caused the concern of various circles of society.Though utilize at present that junked tire has that renovation utilizes, chopping does fuel and be used for generating, chemical cracking and reclaim carbon black and oil fuel, make number of ways such as micelle, but more and more trend towards utilizing junked tire to produce rubber powder in the world, because rubber powder has irreplaceable advantage: the pollution that the latter does not have reclaimed rubber production to be brought does not have other secondary pollutions yet; And the rubber powder product, high in technological content, equipment and product are fit to internationalization operation, meet international trend, the most magical place of rubber powder is, can make the utilization ratio of junked tire reach 100%, can recycle, be real recycle and Sustainable development.
Some areas of China's southeastern coast soft clay foundation that extensively distributing.The engineering properties of soft clay is very bad, often needs to carry out ground and handles.The cement mixing method reinforcement technique is a kind of novel method of reinforced soft soil ground (processing), the cement-earth paddling process utilizes cement as solidifying agent host, by special deep mixer tool, on the spot weak soil and solidifying agent are forced to stir in the ground depths, produce a series of physical-chemical reactions, weak soil is hardened become to have the high-quality ground of globality, the stable and certain intensity of water.It is formed to add the load that solid and inter-pile soil are born superstructure jointly, thereby the supporting capacity of high ground reduces sedimentation and deformation.It is simple that this method has equipment, draws materials conveniently, construction noiselessness, pollution-free, advantage such as reinforcing soft soil thickness is big, cost is low.Yet the soft clay foundation in ocean and paralic environment contains the chlorion of corrosion, and traditional cement earth pile erosion resistance is poor, has limited its application in the soft clay foundation treatment project of high salt area.Studies show that, utilize rubber powder as the additive corrosion resistance of betterment works material greatly.
The present invention by in cement earth pile, add fine rubber powder, solidifying agent carries out modification to the mechanical property of cement earth pile, it is good to have developed a kind of load-carrying properties, resistance to corrosion is strong, environmental protection and waste utilization, the new type rubber cement earth pile of good endurance.
Summary of the invention
The purpose of this invention is to provide a kind of rubber soil-cement pile compound method that can be applied to actual coastal waters corrodibility soft clay foundation treatment project, this rubber soil-cement pile makes waste rubber turn waste into wealth simultaneously, has solved the problems such as pollution of waste rubber to environment.
The rubber soil-cement pile of reinforcing of the present invention coastal waters corrodibility soft clay foundation is with particle diameter 200 purpose fine rubber powder instead of part cement, and wherein the volume content of rubber powder is 28%～32% of a cement volume content.
" the brilliant board of section " 810 underwater curing epoxy adhesives that the solidifying agent of the high-strength rubber cement earth pile of consolidation of soft clay foundation of the present invention provides for the Changsha chemical institute, its volume content is 9%～11% of a cement.
The water cement ratio that rubber soil-cement pile adopted of consolidation of soft clay foundation of the present invention is 0.6 (quality/cement quality).
The high-performance cement soil stake that rubber soil-cement pile adopted of consolidation of soft clay foundation of the present invention is characterized in that: the soft clay water content of being reinforced is that the natural aqueous rate of soil sample is 45.2%, and liquid limit is 43%, and plasticity index is 25.
Beneficial effect of the present invention: on the basis of original soil-cement pile composite foundation facture, with particle diameter 200 purpose fine rubber powder instead of part cement, improve the rubber soil-cement pile resistance to corrosion to reach, wherein the volume content of rubber powder is 28%～32% of a cement volume content.And 9%～11% 810 underwater curing epoxy adhesives by adding the cement volume content are to reach the purpose that improves rubber cement soil intensity.The constructional method of this rubber soil-cement pile is compared with traditional cement earth pile, only needs in advance in proportion with cement, and rubber powder, solidifying agent stirs, and other are all identical; The erosion resistance of cement earth pile can realize that pile strength can be realized by the consumption of regulating solidifying agent by the consumption of regulating rubber powder.Compare with the stake of ortho-water earth, rubber soil-cement pile has higher endurance quality, corrosion resistance.In addition, in cement earth pile, mix rubber powder, solved problems such as waste rubber recycle and environmental pollution.
Embodiment
Embodiment 1
Adopt mortar testing routine size, specimen size is 70.7mm * 70.7mm * 70.7mm.Original soft clay is dried, smash to pieces, grind, obtain the dry ground powder.Rubber cement soil adopts UJ Z-15 molding sand slurry stirrer to stir, and adds earlier entry (consumption=water in soil of water+cement water consumption) in proportion.Cement mixed weight is 15% of an original soft clay quality, cement, and rubber powder and solidifying agent stir 30s, add the dry ground powder again and stir 4～6min to uniform mixing.Add in the die trial mixing and stirring the rubber cement soil that finishes, manual inserting smash, and makes the rubber cement soil face be higher than die trial 3～5mm, and an end of mentioning die trial vibrates 5～10 times, and the other end of mentioning die trial again vibrates 5～10 times, scrapes plane surface.In 20 ℃ of following maintenance 24h demoulding, put into the standard curing room maintenance behind the test block forming.Preparation raw material is: cement uses ordinary Portland cement, label 425; Rubber powder is particle diameter 200 order fine rubber powders, and solidifying agent is 810 underwater curing epoxy adhesives.The component prescription that process is joined in the examination that is mixed with 200 order rubber powders sees Table 1～3.Various material permissible variations see Table 4 in the process for preparation.
Each component prescription (solidifying agent is a cement volume content 0%) of process is joined in the examination of table 1 rubber cement soil
Each component prescription (solidifying agent is a cement volume content 5%) of process is joined in the examination of table 2 rubber cement soil
Each component prescription (solidifying agent is a cement volume content 10%) of process is joined in the examination of table 3 rubber cement soil
Table 4 mix rubber cement soil metering permissible variation
| Water | Cement | The dry ground powder | Rubber powder | Solidifying agent |
| ±1％ | ±1％ | ±2％ | ±2％ | ±1％ |
By above each example as seen, be mixed with rubber powder in the cement-earth after, strength ratio ortho-water earth reduces, and (does not add solidifying agent) under the proportioning of rubber powder 15%, the intensity of rubber cement soil is 2.03MPa (the 90 day length of time), is 76% of ortho-water earth.Add solidifying agent in rubber cement soil after, the intensity of rubber cement soil increases, and at rubber powder 15%, under the proportioning of solidifying agent 5%, the intensity of rubber cement soil is 2.55MPa, and intensity reaches 96% of ortho-water earth.Along with the increase of solidifying agent, the intensity of rubber cement soil increases, but increasing degree reduces.
The construction of rubber soil-cement pile (DBJ15-38-2005) is carried out by " building lot treatment technology standard ".The rubber soil-cement pile intensity that is mixed with rubber powder can be lower than the cement-earth of identical preparation, can regulate to reach the design strength requirement by the content that adds solidifying agent in construction.
By above test-results as seen, the rubber powder volume is a cement volume content 15%, when solidifying agent is cement volume content 5% or the rubber powder volume be cement volume content 30%, when solidifying agent was cement volume content 10%, the intensity of rubber soil-cement pile was near the level of ortho-water earth stake.The rubber powder volume is a cement volume content 15%, and when solidifying agent was cement volume content 10%, the intensity of rubber soil-cement pile surpassed the level of ortho-water earth stake.
Fine rubber powder volume content with 200 order particle diameters is 15% of a cement volume content, solidifying agent is that cement volume content 5% is 30% of a cement volume content with rubber powder, solidifying agent is that the embodiment of cement volume content 10% does rapid osmotic test (the rubber powder volume is a cement volume content 15%, when solidifying agent is cement volume content 10%, though strength of the mixing pile meets the demands, but compare with the rubber powder that is consumed, hardener dose is too high, uneconomical, so do not considered here), the rubber cement soil specimen size is: 40mm * 40mm * 160mm.The simulated seawater composition is as shown in table 5.The anti-Cl of rubber cement soil
-Osmotic effect such as table 5 (the 90 day length of time).The Cl of rubber cement soil
-Depth of penetration is less than the Cl of ortho-water earth
-Depth of penetration, and along with rubber powder content increases, Cl
-Depth of penetration reduces.
Table 5 simulated seawater composition g/L
| Ionic species | Cl - | Na + | SO 4 -2 | Mg +2 | Ca +2 | K + |
| Content | 19.1 | 10.6 | 2.7 | 1.3 | 0.4 | 0.4 |
By above analytical results as seen, the rubber powder volume can satisfy actual pile strength requirement and erosion-resisting effect at cement volume content about 30% when solidifying agent is cement volume content 10% left and right sides simultaneously.
| Ortho-water earth | Rubber cement soil (rubber powder 15%, solidifying agent 5%) | Rubber cement soil (rubber powder 30%, solidifying agent 10%) | |
| Cl -Depth of penetration (mm) | 22.5 | 14.2 | 9.8 |
Claims (2)
1, a kind of anti-corrosive rubber cement earth pile of reinforcing coastal waters corrodibility soft clay foundation, it is characterized in that: form with weight ratio 5.83:2.18:10:0.26:0.068 by water, cement, dry ground powder, particle diameter 200 order rubber powders and solidifying agent, wherein solidifying agent is 810 underwater curing epoxy adhesives, and this tackiness agent volume content is the 9%-11% of cement volume content.
2, rubber soil-cement pile as claimed in claim 1 is characterized in that: cement is ordinary Portland cement, label 425.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101470278A CN100500608C (en) | 2008-08-12 | 2008-08-12 | Rubber soil-cement pile for reinforcing offing corrosive soft clay foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2008101470278A CN100500608C (en) | 2008-08-12 | 2008-08-12 | Rubber soil-cement pile for reinforcing offing corrosive soft clay foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101337800A CN101337800A (en) | 2009-01-07 |
| CN100500608C true CN100500608C (en) | 2009-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2008101470278A Expired - Fee Related CN100500608C (en) | 2008-08-12 | 2008-08-12 | Rubber soil-cement pile for reinforcing offing corrosive soft clay foundation |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104671719A (en) * | 2015-03-06 | 2015-06-03 | 建研建材有限公司 | Cement-based reinforced grouting material with strong acid resistance |
| CN106082867A (en) * | 2016-06-21 | 2016-11-09 | 盐城工学院 | A kind of bank protection vegetation type soil cement and its preparation method and application |
| CN106630861B (en) * | 2017-01-17 | 2018-10-19 | 温州大学 | Improvement and the solidification cement composition of mud rinse fill are blown suitable for Na+ ionic soils |
| CN110627435B (en) * | 2019-09-20 | 2022-01-18 | 南京市水利规划设计院股份有限公司 | Seepage-proofing material for filling horizontal directional drilling and seepage-proofing construction method |
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2008
- 2008-08-12 CN CNB2008101470278A patent/CN100500608C/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| 水泥橡胶粉稳定基层性能研究. 张荣辉等.路基工程，第1期. 2008 * |
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