CN100341979C - Hexadecyl trimethyl ammonium bromide expansive soil improvement agent - Google Patents
Hexadecyl trimethyl ammonium bromide expansive soil improvement agent Download PDFInfo
- Publication number
- CN100341979C CN100341979C CNB200610040272XA CN200610040272A CN100341979C CN 100341979 C CN100341979 C CN 100341979C CN B200610040272X A CNB200610040272X A CN B200610040272XA CN 200610040272 A CN200610040272 A CN 200610040272A CN 100341979 C CN100341979 C CN 100341979C
- Authority
- CN
- China
- Prior art keywords
- soil
- trimethyl ammonium
- ammonium bromide
- hexadecyl trimethyl
- quality
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention relates to a hexadecyl trimethyl ammonium bromide swelled soil modifying agent which is characterized in that the modifying agent has the preparation step: (1) a saturation lime water solution is prepared under the condition of room temperature; (2) hexadecyl trimethyl ammonium bromide is weighed by the dry soil quality of a soil body required for improvement according to the quality percentage of 0.5% or the ratio of the quality of the hexadecyl trimethyl ammonium bromide to the quality of dry soil of the soil body required for improvement is equal to 0.5:99.5; (3) the weighed hexadecyl trimethyl ammonium bromide is dissolved in the saturation lime water solution, and the dosage of saturation lime water needs to dissolve all the hexadecyl trimethyl ammonium bromide. The present invention has the advantages that the performance of the soil can still reach a fixed index under the influence of water, the engineering performance of the swelled soil is improved, and the hexadecyl trimethyl ammonium bromide is tightly adsorbed after reacting with the soil, can not run off and can not pollute environment. A construction method utilizes a permeation improvement principle, the performance of multiple cracks of the swelled soil is sufficiently used, and the construction is simple and convenient.
Description
Technical field
What the present invention relates to is a kind of expansive soil modifier, particularly a kind of cetyl trimethylammonium bromide expansive soil modifier that reduces swelling soil swell-shrink characteristic.Belong to the geotechnical engineering technical field.
Background technology
The physical method that prevents the expansive soil slope unstability at present has: the protection of (1) table water: various waterwayss are set, set up top drainage net system, make surface water be difficult for infiltrating in the slight slope; (2) slope protection, at present main reinforcement measure is: 1. vegetative protection; 2. skeleton protection; 3. slabstone bank protection; 4. totally-enclosed bank protection; 5. soil nailing reinforcing etc.; (3) prop up retaining protection: commonly used have retaining wall and an antislide pile.These methods can not prevent infiltrating of rainwater effectively, simultaneously under the effect of atmospheric influence, the soil body in the atmospheric influence depth range can cause the variation of soil moisture content equally, cause producing in the slope swell-shrinking deformation, the variation of ground water table can cause that also the water ratio of slope soil changes in addition, thereby produces swell-shrinking deformation." soil nailing " reinforces expansive soil slope is a kind of new technology, but it has limitation is only to be applicable to do the slope, and will note draining, big at rainfall amount, the temperature difference big, do and wetly change frequent area and then should not use, its concrete construction technology has bigger difficulty, and expense is higher.These all are the methods of physically improved expansive soil slope, can not fundamentally solve the expansive soil slope swell-shrinking deformation and destroy problem.
The chemical amendments that prevents the expansive soil slope unstability is: Xiang Tuzhong mixes inorganic salts or organic substance etc., improve interaction between the water and soil by the surface reaction of catalytic activation grogs, make the character of soil under the influence of water, still can reach set index, improve the engineering properties of swelling soil.Chemical amendments is for the banket filler of side slope of swelling soil, can be improved by the method for admixture lime, and for natural expansive soil slope, because natural condition complexity, cut-and-cover is difficult to carry out, can not improve as the method for side slope of banketing by admixture lime, simultaneously because the solvability of lime is relatively poor, the meltage of calcium hydroxide is less in the liming, the poor effect of liming improvement, so for natural expansive soil slope, the water-soluble and modification method of modifying agent is most important to improved effect.
Summary of the invention
Purpose of the present invention just is to overcome above-mentioned defective, designs the cetyl trimethylammonium bromide expansive soil modifier of a kind of good water solubility and easy construction.Effectively solve the expansive soil slope swell-shrinking deformation and destroy problem.
Technical solution of the present invention, it is characterized in that the modifying agent preparation steps is: (1) prepares saturated limewater solution at ambient temperature; (2) be 0.5% to take by weighing required cetyl trimethylammonium bromide (CTMAB) by mass percentage according to the dry ground quality of the required improvement soil body; (3) load weighted hexadecyl trimethyl ammonium bromide is dissolved in the saturated limewater, notes that the consumption of saturated limewater is wanted cetyl trimethylammonium bromide is all dissolved.
Described improvement constructional method is: after modifying agent is sprayed at dry side slope surface, because the swelling soil suction sucks solution rapidly, after the soil body on top layer is saturated, the solution that is absorbed by the soil body does not infilter into inside under the crack, infiltrates to the both sides, crack then, is soaked until whole waste mantle, through repeatedly such sprinkling, just can form certain thickness surfaction layer, thereby the side slope internal moisture is maintained, keep the stable of side slope.
Advantage of the present invention: (CTMAB) is soluble in water for cetyl trimethylammonium bromide, be cationic surfactant, because soil particle is less and have a bigger specific surface energy, has stronger adsorptive power, and cetyl trimethylammonium bromide (CTMAB) tensio-active agent surface tension is little, and it can be at the soil body surface drawout.Adding cetyl trimethylammonium bromide (CTMAB) is the hydrophobicity that long carbochain had of utilizing tensio-active agent, make clay change water repellent surface into by hydrophilic surface, after cetyl trimethylammonium bromide (CTMAB) positively charged ion enters interlayer simultaneously, be present in interlayer with the micella state, make the interlamellar spacing of swelling soil increase, but make the part aperture blocked, therefore cause the swelling soil specific surface to reduce, thereby swelling property is just weakened, cetyl trimethylammonium bromide (CTMAB) the positively charged ion negative charge on part soil particle surface that neutralized simultaneously, the negative charge amount of soil body surface reduces, the electrostatic attraction field range of influence that forms around the grogs also reduces, the also attenuation of hydration shell thickness that forms when water in the space contacts when grogs, expansion characteristics will be weakened, and do not produce molten after cetyl trimethylammonium bromide (CTMAB) reacts with soil from effect, make the character of soil under the influence of water, still can reach set index, improve the engineering properties of swelling soil, cetyl trimethylammonium bromide (CTMAB) is just firmly adsorbed after reacting with soil, can not run off, can not pollute environment.Constructional method utilization infiltration improves principle, makes full use of the characteristic in many cracks of swelling soil, and it is simple and convenient to construct.
Embodiment
Embodiment
The modifying agent preparation, be that its step of example is as follows with preparation 1000ml modifying agent: (1) room temperature is 20 ℃; Take by weighing 1.7g white lime and be allowed to condition at and be dissolved under the room temperature condition in the 1000ml water, the solubleness of white lime is 0.17g in the time of 20 ℃, finishes the preparation of saturated limewater solution; (2) needing the dry ground quality of the improvement soil body is 1000g, is by mass percentage 0.5% to take by weighing required cetyl trimethylammonium bromide (CTMAB) 5.0g; (3) load weighted cetyl trimethylammonium bromide is dissolved in the saturated limewater.
The improvement construction procedure is: the modifying agent for preparing is sprayed at dry side slope surface, treat to carry out the sprinkling second time after the side slope surface drying, treat to spray for the third time after the side slope surface drying, so repeated multiple times is sprayed again, until forming desired surfaction layer.
Claims (1)
1, cetyl trimethylammonium bromide expansive soil modifier, it is characterized in that the modifying agent preparation steps is: (1) prepares saturated limewater solution at ambient temperature; (2) be 0.5% to take by weighing required cetyl trimethylammonium bromide by mass percentage according to the dry ground quality of the required improvement soil body; (3) load weighted cetyl trimethylammonium bromide is dissolved in the saturated limewater, the consumption of liming all dissolves cetyl trimethylammonium bromide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610040272XA CN100341979C (en) | 2006-05-12 | 2006-05-12 | Hexadecyl trimethyl ammonium bromide expansive soil improvement agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610040272XA CN100341979C (en) | 2006-05-12 | 2006-05-12 | Hexadecyl trimethyl ammonium bromide expansive soil improvement agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1850702A CN1850702A (en) | 2006-10-25 |
| CN100341979C true CN100341979C (en) | 2007-10-10 |
Family
ID=37132204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610040272XA Expired - Fee Related CN100341979C (en) | 2006-05-12 | 2006-05-12 | Hexadecyl trimethyl ammonium bromide expansive soil improvement agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100341979C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182175B (en) * | 2011-04-02 | 2012-06-06 | 中国科学院武汉岩土力学研究所 | Method for inhibiting swelling-shrinking property of swelling soil |
| CN104514217B (en) * | 2013-09-27 | 2016-04-13 | 东大建设集团有限公司 | Expansive soil foundation modifying agent and improvement construction method |
| CN104498048B (en) * | 2014-12-01 | 2017-09-05 | 广西大学 | Expansive soil modifier and its application method |
| CN110972820B (en) * | 2019-12-17 | 2021-09-07 | 云南农业大学 | Method for guiding rocky slope protection plants to root into rocks |
| CN111303895B (en) * | 2019-12-28 | 2022-09-02 | 北京市政建设集团有限责任公司 | Anti-swelling composite soil stabilizer and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049148A (en) * | 1990-06-23 | 1991-02-13 | 韩峰 | Fine coal ash sintered brick prescription |
| CN1095493C (en) * | 1997-04-24 | 2002-12-04 | 北京欣路特科技发展有限公司 | Composite stabilizing viscons clay solidifying material for road |
| CN1534141A (en) * | 2003-03-31 | 2004-10-06 | Method of proceeding engineering surface protection using ecological material | |
| CN1683719A (en) * | 2004-09-07 | 2005-10-19 | 陈永烽 | Expansion soil ecological modifying agent and construction method |
| CN1693590A (en) * | 2005-05-19 | 2005-11-09 | 劳道邦 | Technology for securing landslip with swelled ground |
-
2006
- 2006-05-12 CN CNB200610040272XA patent/CN100341979C/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049148A (en) * | 1990-06-23 | 1991-02-13 | 韩峰 | Fine coal ash sintered brick prescription |
| CN1095493C (en) * | 1997-04-24 | 2002-12-04 | 北京欣路特科技发展有限公司 | Composite stabilizing viscons clay solidifying material for road |
| CN1534141A (en) * | 2003-03-31 | 2004-10-06 | Method of proceeding engineering surface protection using ecological material | |
| CN1683719A (en) * | 2004-09-07 | 2005-10-19 | 陈永烽 | Expansion soil ecological modifying agent and construction method |
| CN1693590A (en) * | 2005-05-19 | 2005-11-09 | 劳道邦 | Technology for securing landslip with swelled ground |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1850702A (en) | 2006-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111620715B (en) | Water-based capillary crystalline concrete surface repairing reinforcing material and preparation method and application thereof | |
| CN100341979C (en) | Hexadecyl trimethyl ammonium bromide expansive soil improvement agent | |
| CN111393116B (en) | Undisturbed shield muck non-fired building material and preparation method thereof | |
| CN106904928B (en) | A kind of water-borne permeable crystalline waterproofing material and its preparation method and application that reaction speed is controllable | |
| CN110436837B (en) | Renewable concrete and preparation method thereof | |
| CN102060480B (en) | Composite curing agent for dredged silt in watercourse | |
| CN105174798A (en) | Inorganic silicon-organic silicon composite infiltration crystalline type concrete waterproofer | |
| CN105084806A (en) | Inorganic-organic composite permeable crystallization type concrete waterproof agent | |
| CN105236924A (en) | Capillary crystalline waterproofing agent | |
| CN101580356B (en) | Water-emulsion organic silicon waterproof agent | |
| CN106673706A (en) | Water-borne high permeability crystal waterproof hardening agent | |
| CN105218152A (en) | A kind of infiltration crystallization type concrete water-resisting agent | |
| CN105236916A (en) | Inorganic-organic composite capillary crystalline building waterproofing agent | |
| CN102912807A (en) | Open caisson jacking deviation correcting method | |
| CN103553408B (en) | Flexible water-proofing powder and preparation method | |
| Liu et al. | Shear strength, water permeability and microstructure of modified municipal sludge based on industrial solid waste containing calcium used as landfill cover materials | |
| CN105236918A (en) | Novel capillary crystalline waterproofing agent | |
| CN101851515A (en) | Polyvinyl alcohol saturated limewater expansive soil conditioner, preparation method and application thereof | |
| CN105236915A (en) | Inorganic silicon-organosilicon composite capillary crystalline waterproofing agent | |
| CN107746286A (en) | High permeability rate ceramic water-permeable brick and preparation method thereof | |
| CN110218048A (en) | Pervious concrete | |
| CN101012379A (en) | Cation polyacrylamide swelled ground modifying agent | |
| CN105060817A (en) | Adhesive mortar for ALC (autoclaved lightweight concrete) wallboard | |
| CN101844887A (en) | Polyvinyl alcohol water solution expansive soil modifier, preparation method and application thereof | |
| CN1664047A (en) | Hydrophobic and water-proof materials preparation technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071010 Termination date: 20150512 |
|
| EXPY | Termination of patent right or utility model |