CN1107500A - Soil modifier - Google Patents
Soil modifier Download PDFInfo
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- CN1107500A CN1107500A CN 94105655 CN94105655A CN1107500A CN 1107500 A CN1107500 A CN 1107500A CN 94105655 CN94105655 CN 94105655 CN 94105655 A CN94105655 A CN 94105655A CN 1107500 A CN1107500 A CN 1107500A
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- soil
- acid
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- polyvinyl alcohol
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- Road Paving Structures (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The soil modifier for subgrade features that the chemical composition of anionic surfactant and higher fatty acid is associated with cations in soil to remove water adsorbed by soil, resulting in increasing soil density by 3-10% and compression strength by 20-40% with low cost. With said soil modifier, the bearing power and water resistance of soil road is comparable to those of cement pavement.
Description
The present invention relates to category by stable soil making roadbed.
In road, place (playground, sports ground, drome, the parking lot etc.) making, usually the soil property because of construction ground is stable inadequately, clayed soil especially, and the water logging after deliquescing that is caught in the rain, plasticity increase, and its ultimate compression strength descends the back and causes the road surface to be damaged.
The general useful lime of firm processing, cement for soil come the stable soil ground, and also available sulfuric acid, phosphoric acid make soil compaction as treatment agent with the potential of hydrogen that changes soil, to strengthen bearing capacity.The fixing method of above-mentioned soil is simple, and expense is cheap, but is unsuitable for the area that south is rainy and ground water table is high.
Patent No. SU1357499, JP49-8048, the soil curing agent of SU1298237, they are basically with vinylformic acid, vinylformic acid homologue, urine aldehyde, resene composition, polysiloxane based composition, resol based composition etc.These macromolecule resins are polymerized to the aqueous dispersion type emulsion or add linking agent with resin monomer, and promotor becomes water-insoluble polymer after mixing.No matter be water miscible liquid or water-insoluble polymer, they all become the cementation body with polymeric membrane bonding soil particle.Its physical strength is good, firm, stable, can stop the water infiltration fully.But the expense costliness usually only is used in treatment of special situation such as leaking of occurring in the tunnel digging, infiltration, sandstone avalanche, structure foundation sinking.If the agent for fixing as the roadbed of building road is difficult to bear economically.
The object of the present invention is to provide a kind of soil modifier, it is a kind of chemical composition that constitutes with anion surfactant and higher aliphatic acid, combine the planar water that soil particle is eliminated in the back with the positively charged ion in the soil, again by promptly becoming stable roadbed or road surface behind the cal rolling.
Another object of the present invention is to provide a kind of preparation method of soil modifier.
Technical scheme of the present invention realizes as follows:
The present invention by alkyl benzene sulphonate (ABS), polysiloxane carboxylic acid, polyacrylic acid, lipid acid, poly-ly recall enol, water is formed, its weight percent:
Alkyl benzene sulphonate (ABS): 8～12%
Polysiloxane carboxylic acid: 2～5%
Polyacrylic acid: 3～5%
Lipid acid: 2～7%
Polyvinyl alcohol: 3～6%
Water: 70～85%
Each component summation: 100%
Wherein: alkyl benzene sulphonate (ABS): can select carbochain 12～carbochain 18 for use
Polysiloxane carboxylic acid: can select molecular-weight average 300～500 for use
Lipid acid: can select carbochain 12～carbochain 18 for use
Polyacrylic acid: can select the polymerization degree 900～1500 for use
Polyvinyl alcohol: can select the polymerization degree 1700～2000 for use
During preparation: earlier polyvinyl alcohol is dropped into agitator kettle and add cold water, heating makes it dissolving then, do not stop to stir, when heating up 80 ℃～100 ℃, treat to stop to heat after polyvinyl alcohol dissolves fully, at this moment continue to stir and drop into successively lipid acid, the horizontal acid of alkylbenzene, to be mixed evenly after, drop into polysiloxane carboxylic acid, polyacrylic acid at last, and make up water to aequum becomes the white emulsus acidic liquid that certain viscosity is arranged, its pH value 2～5 after continuing to stir.
Because soil is made up of the different mineral grain of diameter, main component is a silicate, metallic element is the positively charged ion state under the effect of electrobalance principle, being electronegative (OH) hydroxyl will be attracted to positive near the metallic element of state and formed the planar water of surrounding soil particle, because moisture film has stoped particulate close, particle resembles and is suspended in the moisture film, this just makes clay present plasticity-after absorbing water, and this plasticity-must overcome when building road just, anion surfactant among the present invention, as alkyl benzene sulphonate (ABS), the polysiloxane carboxylic acid, polyacrylic acid, the negatively charged ion of lipid acid and the positively charged ion in the soil have formed association, the hydrophobic group of above-mentioned organic acid group one end repels the planar water on the little material of soil surface, has played the effect to the soil modification.Soil after the modification because removed adsorbed water layer, under the effect that rolls of machinery, the soil particle spacing is easy to dwindle and produces gathering, forms firm soil layer.
Advantage of the present invention and positively effect are as follows:
The clay density of handling through the present invention can improve 3～10%, and ultimate compression strength improves 20～40%.Its bearing capacity can be compared with cement stabilized soil with water resisting property, has satisfied the requirement that lay on roadbase or simple and easy road basically.And laid down cost is low.As handle soil layer 20 cm thicks, only 1～2.50 yuan of every square metre of expense; But as high-grade road foundation course transformation cost saving; Build than traditional way as economical highway that the road running performance is good, maintenance cost is lacked.Build, change the road that the sort of rainy day mire, fine dust fly poplar important effect is arranged accelerating mountain forest, rural economy highway (inexpensive) especially.
Embodiment 1: at first fetch earth and do the soil sample analysis, then by following component (weight percent) preparation.To measure the pH value of soil, the pH value of its mensuration should just can be used the present invention less than 7 o'clock.
16 alkyl benzene sulphonate (ABS)s 12%
Polysiloxane carboxylic acid (mean coefficient 500) 3%
Polyacrylic acid (polymerization matter 900) 3%
Polyvinyl alcohol (polymerization degree 1750) 5%
Stearic acid 5.5%
Water 71.5%
Each component is promptly become soil modifier after by the preparation of above-mentioned processing method, be injected into 200～300 times of water barrow dilutions again, during construction, earlier soil layer is dug with ploughshare, smash with rotary cultivator again, soil modifier after will diluting with the water barrow subsequently spills in the soil and with rotary cultivator and mixes thoroughly, uses 20～30 day preserving period of road roller pressing mean longitude again.The maintenance of should sprinkling water in right amount in preserving period, after preserving period, the soil real density reaches 98%, and at this moment, promptly there has been good water resisting property on this road surface.
Embodiment 2: soil block immersion experiment:
Soil sample source: upright residential district, suburbs experimental road, area 500m
2, be, the compacting maintenance is in the time of 15 days, takes out three kinds of soil samples and analyzes that the code name of soil sample is respectively A, B, C through handling with this soil properties-correcting agent.
A: handle and the compacting soil sample with the present invention.
B: with the present invention's processing, without the compacting soil sample.
C: handle without the present invention, but through the compacting soil sample.
Experimental technique: above-mentioned three kinds of soil samples are put into same water pond, add water 0.6mm height.
The experiment time opening: on October 11st, 93,12: 40 minutes noon:
Experimental record: 1: 15 minute afternoon.
A: no swelling and avalanche phenomenon.
B: complete swelling is soft mashed.
C: hardness is also arranged slightly at fully soft mashed, top, bottom.
7: 00 minutes afternoon:
A: no change.
B, C: all soft fully mashed.
October 14: 5: 00 afternoons:
A: no change still.
Claims (4)
1, a kind of soil modifier of stable soil making roadbed is characterized in that: be made up of alkyl benzene sulphonate (ABS), polysiloxane phosphoric acid, polyacrylic acid, lipid acid, polyvinyl alcohol, water.
2, soil modifier according to claim 1 is characterized in that: its weight percent is:
Alkyl benzene sulphonate (ABS): 8～12%
Polysiloxane carboxylic acid: 2～5%
Polyacrylic acid: 3～5%
Fat and acid: 2～7%
Polyvinyl alcohol: 3～6%
Water: 70～85%
Each component summation: 100%
3, soil modifier according to claim 1 and 2 is characterized in that:
Alkyl benzene sulphonate (ABS): carbochain 12～18
Polysiloxane carboxylic acid: molecular-weight average 300～500
Lipid acid: carbochain 12～18
Polyacrylic acid: the polymerization degree 900～1500
Polyvinyl alcohol: the polymerization degree 1700～2000
4, a kind of preparation method of soil modifier is characterized in that:
A: with polyvinyl alcohol 80 ℃～100 ℃ dissolvings of in agitator kettle, heating.
B: successively lipid acid, alkyl benzene sulphonate (ABS) are dropped into stirring and dissolving in the agitator kettle, mix.
C: at last polysiloxane carboxylic acid, polyacrylic acid, water are dropped in the agitator kettle stirring and dissolving until becoming white emulsion, its pH value 2～5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105655 CN1107500A (en) | 1994-05-24 | 1994-05-24 | Soil modifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94105655 CN1107500A (en) | 1994-05-24 | 1994-05-24 | Soil modifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1107500A true CN1107500A (en) | 1995-08-30 |
Family
ID=5032132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94105655 Pending CN1107500A (en) | 1994-05-24 | 1994-05-24 | Soil modifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1107500A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368508C (en) * | 2006-01-25 | 2008-02-13 | 北京亿路特通新材料有限责任公司 | Soil solidifying agent |
| TWI384941B (en) * | 2010-06-30 | 2013-02-11 | Univ Vanung | Construction of potted plants by means of concrete |
| CN104774126A (en) * | 2015-04-02 | 2015-07-15 | 梁志华 | Soil modifier |
-
1994
- 1994-05-24 CN CN 94105655 patent/CN1107500A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368508C (en) * | 2006-01-25 | 2008-02-13 | 北京亿路特通新材料有限责任公司 | Soil solidifying agent |
| TWI384941B (en) * | 2010-06-30 | 2013-02-11 | Univ Vanung | Construction of potted plants by means of concrete |
| CN104774126A (en) * | 2015-04-02 | 2015-07-15 | 梁志华 | Soil modifier |
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| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |