CN101386503B - Method for preparing desert greening brick by inorganic gelation technology - Google Patents
Method for preparing desert greening brick by inorganic gelation technology Download PDFInfo
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- CN101386503B CN101386503B CN200810173162XA CN200810173162A CN101386503B CN 101386503 B CN101386503 B CN 101386503B CN 200810173162X A CN200810173162X A CN 200810173162XA CN 200810173162 A CN200810173162 A CN 200810173162A CN 101386503 B CN101386503 B CN 101386503B
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- sand
- desert greening
- greening brick
- water glass
- desert
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Abstract
The invention discloses a method for preparing desert greening brick by the inorganic gel, wherein water glass and sand are fully mixed, and the consumption of the water glass for each 12kg of sand is between 1000 and 2000ml; the mixture is subjected to pressure forming, completely immersed in a AlCl3 solution for solidification and maintained after the solidification forming so as to prepare the desert greening brick. The method has the advantages of simple technological process, convenient operation and low cost, and the prepared desert greening brick has the advantages of short solidifying time, high compression strength, high water resistance, high frost resistance and the like; when trees and grasses are planted in open holes of the desert greening brick, the aims of sand fixing and greening are achieved, so that the desert greening brick is an environment friendly type desert greening product.
Description
Technical field
The present invention relates to a kind of preparation method of sand fixation material, be specifically related to a kind of preparation method of desert greening brick.
Background technology
One of the maximum environment that the world today faces, socioeconomic problem are exactly desertification.The rapid expansion of desertification land area causes environmental degradation and enormous economic loss, even causes the social concern of certain areas, becomes the focus that the whole world is paid close attention to.
The mode of fixing the sand that adopts at present mainly is a sand consolidation with biologic, engineering is fixed the sand and chemical sand-fixing.Simple sand consolidation with biologic can't not survived because of the lack of water arid owing to institute's kind of plant is not blown away or buries by dust storm exactly, therefore, must fix the sand to combine with chemistry or mechanical sand barrier.Engineering fixes the sand that on the one hand cost is high, and the cycle that combines with biology on the one hand is long and need sand bed moisture.Then cost is low on the one hand for chemical sand-fixing, can carry out simultaneously with sand consolidation with biologic on the one hand, and can when fix the sand, increase and preserve moisture and fertilizer slow release function, is more conducive to plant-growth, and also can adds the function of disease and insect resistance where necessary.That modern sediment control structure requires is efficient, cheap, fix the sand means fast, easily, because chemical sand-fixing is to accomplish at drift sand surface sprinkling chemical bond thing (being sand-fixation agent), so have the characteristics quickly and easily of constructing.Therefore, exploitation high-performance, low cost, be easy to construct, the chemical sand-fixing materials of asepsis environment-protecting, just become a current research focus.
The concrete kind of chemical sand fixing material commonly used mainly contains four big types: grout, water glass, petroleum products class and polymkeric substance super absorbent resin lipid.
It promptly is that it is sprayed at back condensation cure formation bonding course covering Shamian Island on the Shamian Island that grout fixes the sand; But because bonding course is very thin and intensity is very low, the sclerotium that thes cement solidifies simultaneously belongs to hard brittle material, does not almost have toughness; In the desert, receive the influence of weather extremes and sand dune migration; Cement gel layer meeting generation of cracks loses the sand-fixation, water-keeping effect, so present stage uses grout to fix the sand seldom separately.
Water glass uses history last 100 years as inexpensive, nontoxic sand fixation material.But himself can't gelling, need after a kind of solidifying agent of admixture, water glass and solidifying agent generation precipitating action could be formed bonding course with the loose grains of sand, thereby reach the purpose of fixing the sand.The water glass slurry that past adopts is made up of water glass and acid-reaction agent, issues rubber at strong alkaline condition and solidifies knot, and gelation time can not prolong; Impregnability is poor; Curing reaction is incomplete, and bonding course intensity is not high, is prone to destroyed by external force; And stronger alkalescence influence can take place, make the SiO of generation
2Colloid is stripping gradually, and the water resisting property variation reduces its weather resistance greatly, also can cause the secondary alkali pollution of environment, so at present domestic and international investigator is devoted to the research of various modified water glass slurries.The water glass slurries of acidic water glass and low modulus and high-module have mainly been worked out.Thereby the acidic water glass slurries are to mix the acidic silicasol that obtains with water glass with excessive acid-reaction agent, use the alkali reaction agent then.Because it is at the neutral region inner gel, and gelinite do not have the alkali stripping, therefore do not have the sort of leaching corrosion of alkaline water glass and contaminate environment phenomenon.For solving the defective of ortho-water glass pulp, once there were many people to use the water glass of low modulus and high-module under study for action.The slurries that use low modulus water glass and lime class or bases to share, its induration shrinks less, and impregnability is excellent.But there is strong basicity in this slurries, and itself has stronger thixotropy again, thereby stay many problems to operation.And high-module (SiO
2/ Na
2The mole ratio of O is greater than 5.0) the water glass slurries all very excellent aspect intensity, impregnability and weather resistance.Other have some researchists to water glass add organic (as oxalic dialdehyde, organic acid and ester such as NSC 11801), inorganic materials carries out compound; Obtained to be suitable for spraying the liquid compound water glass slurries sand-fixation agent of construction; But what have needs two-shot grouting, and gel time is uncontrollable, and the gelling that has is inhomogeneous; What have has toxicity, and the consolidation strength that has is not high.
It is exactly to spray the petroleum products of suitable number at sandy land surface that the petroleum products class is used to fix the sand, and makes Shamian Island fixed by the cohesive action with the grains of sand.But petroleum products ageing resistance in use is poor, causes bonding course slowly to become fragile, harden, and takes place to wear out, so that ftracture by the wind sapping at last.
Polymkeric substance super absorbent resin lipid sand fixation material is one of research focus of current chemical sand fixing material.Use that the polymkeric substance High hydrophilous resin fixes the sand to have that consolidation strength is higher, water absorbing and retaining properties good, water-tolerant, curing is rapid, cohesiveness is good characteristics; What have also has characteristics such as good elasticity and high-temperature stability; But this type of macromolecule chemical material can receive thermo-oxidative ageing and photooxidation resistance; Chain cracking and crosslinking reaction take place, and make bonding course suffer to destroy so that reduce sand-fixing effect.High molecular polymer also is restricted because of aspects such as its cost is very high, production technique and raw material sources, not seen widespread use, and the other organic polymer is poisonous also to have limited its use.
Summary of the invention
The objective of the invention is to the deficiency of prior art and a kind of preparation method who utilizes water glass to prepare desert greening brick is provided, set time is short, ultimate compression strength is high, water tolerance is strong, frost resistance is strong, the purpose that reach conservation, reduces cost.
The technical scheme that the present invention adopted:, after the compression molding it all is dipped into AlCl with water glass and sand thorough mixing
3Be cured in the solution, maintenance again after the moulding prepares husky brick.
Desert greening brick prepared by inorganic gelation technology provided by the present invention is simple; Easy and simple to handle; Cost is low, and the desert greening brick for preparing has short, advantage such as ultimate compression strength is high, water tolerance is strong, frost resistance is strong set time, can plant vegetation in the desert greening brick hollow position; Reaching the purpose of fixing the sand, afforesting, is a kind of environment-friendly type desert afforestation product.
Embodiment
Be described further in the face of the present invention down.
The preparation technology of desert greening brick prepared by inorganic gelation provided by the present invention: with water glass and the sand thorough mixing of modulus between 2～5, the consumption of the used water glass of wherein every 12kg sand is between 1000～2000ml; With after the mixture compression molding it all being dipped into the AlCl that concentration is 1～3mol/L
3Be cured in the solution, carry out maintenance behind the curing molding, prepare desert greening brick.
Said AlCl
3The concentration of solution is 1～3mol/L.
Said maintenance method is in 60～100 ℃ of maintenances 2～7 days.
Embodiment one,
The delivery number is 2.5 water glass 3000ml and 24kg sand thorough mixing, with after the mixture compression molding it all being dipped into the AlCl that concentration is 2mol/L
3Be cured in the solution, in 75 ℃ of maintenances 5 days, prepare desert greening brick behind the curing molding.
Embodiment two,
The delivery number is 3.5 water glass 3500ml and 24kg sand thorough mixing, with after the mixture compression molding it all being dipped into the AlCl that concentration is 1.5mol/L
3Be cured in the solution, in 80 ℃ of maintenances 3 days, prepare desert greening brick behind the curing molding.
Embodiment three,
The delivery number is 4.0 water glass 2500ml and 24kg sand thorough mixing, with after the mixture compression molding it all being dipped into the AlCl that concentration is 1.5mol/L
3Be cured in the solution, in 90 ℃ of maintenances 4 days, prepare desert greening brick behind the curing molding.
Embodiment four,
The delivery number is 3.0 water glass 3800ml and 24kg sand thorough mixing, with after the mixture compression molding it all being dipped into the AlCl that concentration is 2.0mol/L
3Be cured in the solution, in 75 ℃ of maintenances 5 days, prepare desert greening brick behind the curing molding.
Claims (2)
1. the method for a desert greening brick prepared by inorganic gelation, it is characterized in that: with water glass and the sand thorough mixing of modulus between 2～5, the consumption of the used water glass of wherein every 12kg sand is between 1000～2000ml; With after the mixture compression molding it all being dipped into the AlCl that concentration is 1～3mol/L
3Be cured in the solution, carry out maintenance behind the curing molding, prepare desert greening brick.
2. the method for desert greening brick prepared by inorganic gelation according to claim 1, it is characterized in that: said maintenance method is in 60～100 ℃ of maintenances 2～7 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810173162XA CN101386503B (en) | 2008-10-28 | 2008-10-28 | Method for preparing desert greening brick by inorganic gelation technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810173162XA CN101386503B (en) | 2008-10-28 | 2008-10-28 | Method for preparing desert greening brick by inorganic gelation technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101386503A CN101386503A (en) | 2009-03-18 |
| CN101386503B true CN101386503B (en) | 2012-01-11 |
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ID=40476207
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810173162XA Expired - Fee Related CN101386503B (en) | 2008-10-28 | 2008-10-28 | Method for preparing desert greening brick by inorganic gelation technology |
Country Status (1)
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| CN (1) | CN101386503B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108298937A (en) * | 2017-09-12 | 2018-07-20 | 柳州市柳晶科技股份有限公司 | It is a kind of to manufacture the method for greening brick and greening brick obtained using foundry waste |
| CN114163171B (en) * | 2022-02-11 | 2022-04-19 | 潍坊青欣绿化工程有限公司 | Greening brick and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197703A (en) * | 1997-04-26 | 1998-11-04 | 何相华 | Spray solidification process of water glass sand mould using liquid curing-agent |
| CN1613574A (en) * | 2003-11-07 | 2005-05-11 | 魏靖奇 | Precisioning casting process for high-strength hard mould casing by foamed plastic mould |
-
2008
- 2008-10-28 CN CN200810173162XA patent/CN101386503B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197703A (en) * | 1997-04-26 | 1998-11-04 | 何相华 | Spray solidification process of water glass sand mould using liquid curing-agent |
| CN1613574A (en) * | 2003-11-07 | 2005-05-11 | 魏靖奇 | Precisioning casting process for high-strength hard mould casing by foamed plastic mould |
Non-Patent Citations (1)
| Title |
|---|
| 中捷友谊厂 沈阳工业学院 联合研制组.结晶氯化铝基混合硬化剂的试验研究.《特种铸造及有色合金》.1987,(第1期),11-15. * |
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| CN101386503A (en) | 2009-03-18 |
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Granted publication date: 20120111 Termination date: 20121028 |