CN1280168A - Soil stabilizer and its preparing method - Google Patents
Soil stabilizer and its preparing method Download PDFInfo
- Publication number
- CN1280168A CN1280168A CN 00112356 CN00112356A CN1280168A CN 1280168 A CN1280168 A CN 1280168A CN 00112356 CN00112356 CN 00112356 CN 00112356 A CN00112356 A CN 00112356A CN 1280168 A CN1280168 A CN 1280168A
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- China
- Prior art keywords
- curing agent
- soil
- soil curing
- inhibiter
- sulfuric acid
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- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The soil stabilizer consists of waste industrial sulfuric acid 75-95 wt%, composite moistening dispersent 2-12 wt%, terpene solvent 2-10 wt% and corrosion inhibiotor 0.4-5 wt%. When it is added into soil in the amount of 190 ppm of soil volume, it may raise soil strength by 40-200 %.
Description
The present invention relates to the soil chemistry agent for fixing.
All require its ground and foundation soil that certain intensity and supporting capacity are arranged in highway, street, parking lot, airport, reservoir and the dam construction.Yet natural soil is owing to its soil class, size-grade distribution, mineral composition and organic content difference, and its intensity and supporting capacity have sizable difference.For increasing the stability and the supporting capacity of soil, traditional method is to ship a large amount of performances from elsewhere more suitably to fill up the original more weak soil of soil replacing, or add conventional agent for fixing such as cement, lime, pitch or flyash, these methods are not that effect is undesirable, are exactly that cost significantly improves.Also there is polymkeric substance such as adopting silicone or polypropylene amine to increase the intensity of soil in recent years, but, in the actual construction of road, is difficult to apply owing to the cost costliness.
United States Patent (USP) (US4,941,924) discloses a kind of chemical soil curing agent, and its cost is also than higher.
The a large amount of sulfur waste acid of normal generation in petroleum chemical plant, for example in the alkylation of refinery or isomerization process, produce a large amount of sulfur waste acid as catalyzer, these industrial waste sulfuric acids (perhaps containing useless sulfonic acid) cause severe environmental pollution because complicated component is difficult to utilize.
The purpose of this invention is to provide a kind of is the soil stabilizer with low cost and the method for making thereof of main raw material preparation with industrial waste sulfuric acid.
The objective of the invention is to adopt following technical scheme to realize.
A kind of soil stabilizer, it mainly is made up of industrial waste sulfuric acid, compound wetting dispersing agent, terpenes solvent and inhibiter, and the weight percent of each component is:
Industrial waste sulfuric acid 75-95%
Compound wetting dispersing agent 2-12%
Terpenes solvent 2-10%
Inhibiter 0.4-5%
Wherein industrial waste sulfuric acid can be the spent acid that produces in refinery alkylation or the isomerization process, compound wetting dispersing agent can by the Sulfonates anion surfactant and the APG nonionogenic tenside is composite forms, both weight ratios are 1: 0.5-2.0, the terpenes solvent can be α-Pai Xi or beta-pinene, perhaps can be the mixture of both arbitrary proportions, inhibiter can be diethyl thiourea or o-toluidine.
The preparation method of soil curing agent of the present invention is that compound wetting dispersing agent, terpenes solvent and the inhibiter that will measure mix in advance, dissolve, under agitation be added to it in industrial waste sulfuric acid of metering lentamente then, the cooling while adding, make temperature of reaction be no more than 45 ℃, finish the back and continue to stir 30 minutes, promptly get soil curing agent of the present invention.
Soil curing agent of the present invention adopts industrial waste sulfuric acid to make main raw material, has solved the processing and utilizing problem of a large amount of industrial waste sulfuric acids that produce in the petroleum chemical plant, has avoided the pollution to environment, and preparation cost is cheap.And soil curing agent of the present invention has following characteristics:
1. the soil soil phase specific tenacity that more originally was untreated after firm can improve 40% to 2 times;
2. because the agent for fixing consumption is few, only need to use 19/100000ths of soil volume, compare with conventional agent for fixing such as adopting cement, lime, cost can reduce 20-50% when reaching same intensity;
3. the perviousness of soil greatly descends after treatment, so can increase the weather resistance of road, has reduced maintenance cost, has also prolonged work-ing life;
4. after handling the pollutent in the soil is sealed in the gap of grogs, is difficult for soluble in water or is dispersed in the air,, help environment protection so can reduce pollution.
Further specify the present invention by the following examples.The preparation method of all embodiment is as follows: earlier with component 2,3,4,5 are pre-mixed, dissolve; Industrial waste sulfuric acid is added in the enamel reaction still, and the logical water coolant of chuck slowly adds the above-mentioned mixed thing that gives, and makes temperature of reaction be no more than 45 ℃, finishes the back and continues to stir 30 minutes, promptly gets soil curing agent.
The physicochemical property of the primary soil that application test adopted of soil curing agent of the present invention is:
| Optimum moisture content wt% | Maximum dry density g/cm 3 | Liquid limit wt% | Plastic limit wt% | Plasticity index |
| ????7．5 | ????1．96 | ????31．2 | ????16．0 | ????15．2 |
Test method is every 100cm3 soil sample soil curing agent 0.019ml, soil curing agent elder generation dilute with water, making final soil sample water content is 8.5-9.5wt%, to try soil pressure makes φ 7.01 * 7.01 (the right cylinder sample of cm * cm) makes a strength test by seven days unconfined compressive strenght test methods of immersion.The unconfined compression strength of untreated former soil sample is 1.41MPa.
Embodiment 1:
Prescription 1
Weight percent (%)
1. the refinery alkylation spent acid 89.0
2. alkyl benzene calcium sulfonate 1.8
3. APG (APG) 1.8
4. α-Pai Xi 6.2
5. diethyl thiourea 1.2
Unconfined compression strength is 2.68MPa.
Prescription 2
Weight percent (%)
1. the refinery alkylation spent acid 80.0
2. alkyl benzene calcium sulfonate 4.0
3. APG (APG) 3.5
4. beta-pinene 10.4
5. o-toluidine 2.1
Unconfined compression strength is 2.18MPa.
Prescription 3
Weight percent (%)
1. refinery's isomerization spent acid 90.0
2. alkyl benzene calcium sulfonate 1.2
3. APG (APG) 1.9
4. beta-pinene 5.9
5. o-toluidine 1.0
Unconfined compression strength is 2.52MPa.
Claims (6)
1. a soil curing agent is characterized in that being made up of industrial waste sulfuric acid, compound wetting dispersing agent, terpenes solvent and inhibiter, and the weight percent of each component is:
Industrial waste sulfuric acid 75-95%
Compound wetting dispersing agent 2-12%
Terpenes solvent 2-10%
Inhibiter 0.45-5%
2. soil curing agent according to claim 1 is characterized in that industrial waste sulfuric acid is the spent acid in refinery alkylation or the isomerization process.
3. soil curing agent according to claim 1 is characterized in that compound wetting dispersion is by the Sulfonates anion surfactant and the APG nonionogenic tenside is composite to form that both weight ratios are 1: 0.5-2.0.
4. soil curing agent according to claim 1 is characterized in that the terpenes solvent is α-Pai Xi or beta-pinene, or the mixture of both arbitrary proportions.
5. soil curing agent according to claim 1 is characterized in that inhibiter is diethyl thiourea or o-toluidine inhibiter.
6. method for preparing the described soil curing agent of claim 1, it is characterized in that compound wetting dispersing agent, terpenes solvent and the inhibiter of metering are mixed in advance, dissolve, under agitation be added to it in industrial waste sulfuric acid of metering lentamente then, the cooling while adding, make temperature of reaction be no more than 45 ℃, finish the back and continue to stir, promptly get soil curing agent of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112356 CN1116379C (en) | 2000-06-22 | 2000-06-22 | Soil stabilizer and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112356 CN1116379C (en) | 2000-06-22 | 2000-06-22 | Soil stabilizer and its preparing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1280168A true CN1280168A (en) | 2001-01-17 |
| CN1116379C CN1116379C (en) | 2003-07-30 |
Family
ID=4582219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00112356 Expired - Fee Related CN1116379C (en) | 2000-06-22 | 2000-06-22 | Soil stabilizer and its preparing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1116379C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676176A (en) * | 2012-03-19 | 2012-09-19 | 尚路 | Composite ionic soil curing agent and manufacturing method thereof |
-
2000
- 2000-06-22 CN CN 00112356 patent/CN1116379C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676176A (en) * | 2012-03-19 | 2012-09-19 | 尚路 | Composite ionic soil curing agent and manufacturing method thereof |
| CN102676176B (en) * | 2012-03-19 | 2015-11-25 | 尚路 | A kind of compound ion soil-solidified-agent and manufacture method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1116379C (en) | 2003-07-30 |
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