CN101386502A - Method for preparing porous desert greening brick - Google Patents
Method for preparing porous desert greening brick Download PDFInfo
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- CN101386502A CN101386502A CNA2008101731615A CN200810173161A CN101386502A CN 101386502 A CN101386502 A CN 101386502A CN A2008101731615 A CNA2008101731615 A CN A2008101731615A CN 200810173161 A CN200810173161 A CN 200810173161A CN 101386502 A CN101386502 A CN 101386502A
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- Prior art keywords
- sand
- porous
- greening brick
- water glass
- desert greening
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a method for preparing a porous desert greening brick, which is characterized in that the bentonite and sand are fully mixed, added with water glass with even stirring; the mixture is put in a mould for pressure forming, completely immersed in the AlCl3 solution for solidification and maintained after the solidification forming so as to prepare the porous desert greening brick. The method has the advantages of simple technological process, convenient operation and low cost, and with the filling action of the amorphous silicic acid gel generated by the reaction between the AlCl3 and the water glass and the characteristics of the bentonite, the environment friendly type desert greening brick which realizes the windbreak and sand fixing as well as vegetation greening can be effectively prepared.
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 porous 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 mainly is a sand consolidation with biologic at present, 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 is fixed the sand on the one hand cost height, 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 increase and preserve moisture and fertilizer slow release function when fix the sand, and 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 finish 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 classes: 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 hardenite that thes cement solidifies simultaneously belongs to hard brittle material, almost there is not toughness, in the desert, be subjected to the influence of atrocious weather and sand dune migration, the cement gel layer can chap, and 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 of water glass and acid-reaction agent, issue rubber at strong alkaline condition and solidify knot, gelation time can not prolong, impregnability is poor, curing reaction is incomplete, and bonding course intensity is not high, is easily 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, the impregnability excellence.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
20 mole ratio 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, gel time is uncontrollable, 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 be subjected to 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 provide at the deficiencies in the prior art a kind of preparation method of porous desert greening brick, the characteristics such as good suction, water conservation, guarantor's fertilizer and ion-exchange of utilizing wilkinite to have can improve the water-retentivity of porous desert greening brick greatly.
Mechanism of the present invention is: AlCl
3And the hole that water glass has reacted the effective filling of amorphous silicon acid gel that generates between the grains of sand, and be coated on more equably the grains of sand around, between the grains of sand, formed crosslinked, and bond together mutually, strengthened the cohesive force between the grains of sand, improved the stability and the degree of compactness of material, and the characteristics such as good suction, water conservation, guarantor's fertilizer and ion-exchange of utilizing wilkinite to have, water-retentivity improved.
The technical solution adopted in the present invention: behind wilkinite and sand thorough mixing, add water glass and fully stir, mixture is put into the mould compression molding, then it all is dipped into AlCl
3Be cured in the solution, carry out maintenance behind the curing molding, prepare porous desert greening brick.
Preparation method's technological process of porous desert greening brick provided by the present invention is simple, easy to operate, and cost is low, utilizes AlCl
3The packing action of the amorphous silicon acid gel that generates with water glass reaction, and bentonitic characteristic prepare effectively and a kind ofly can check winds and fix drifting sand and can plant the environment-friendly type desert greening brick of giving birth to greening.
Embodiment
Below the invention will be further described.
The preparation method of porous desert greening brick provided by the present invention: fully stir adding water glass behind wilkinite and the sand thorough mixing, wherein sand and bentonitic weight ratio are 3: 1, and the amount that adds water glass in every 2000g sand is 100～300mL; Mixture is put into the mould compression molding, then it all is dipped into AlCl
3Be cured in the solution, under normal temperature, carry out maintenance behind the curing molding, prepare porous desert greening brick.
Described AlCl
3The concentration of solution is 1.0～3.0mol/L.
Be 2～10 minutes described set time.
Described curing time is 3～10 days.
Embodiment one,
Be to add water glass behind 3: 1 the ratio thorough mixing fully to stir by weight with wilkinite and sand, the amount that adds water glass in every 2000g sand is 180mL; Mixture is put into the mould compression molding, then it all is dipped into the AlCl that concentration is 2.5mol/L
3Be cured 4 minutes in the solution, under normal temperature, carry out maintenance 5 days behind the curing molding, prepare porous desert greening brick.
Embodiment two,
Be to add water glass behind 3: 1 the ratio thorough mixing fully to stir by weight with wilkinite and sand, the amount that adds water glass in every 2000g sand is 200mL; Mixture is put into the mould compression molding, then it all is dipped into the AlCl that concentration is 1.5mol/L
3Be cured 7 minutes in the solution, under normal temperature, carry out maintenance 8 days behind the curing molding, prepare porous desert greening brick.
Embodiment three,
Be to add water glass behind 3: 1 the ratio thorough mixing fully to stir by weight with wilkinite and sand, the amount that adds water glass in every 2000g sand is 250mL; Mixture is put into the mould compression molding, then it all is dipped into the AlCl that concentration is 2.0mol/L
3Be cured 6 minutes in the solution, under normal temperature, carry out maintenance 6 days behind the curing molding, prepare porous desert greening brick.
Claims (4)
1, a kind of preparation method of porous desert greening brick, it is characterized in that: fully stir adding water glass behind wilkinite and the sand thorough mixing, wherein sand and bentonitic weight ratio are 3:1, and the amount that adds water glass in every 2000g sand is 100～300mL; Mixture is put into the mould compression molding, then it all is dipped into AlCl
3Be cured in the solution, under normal temperature, carry out maintenance behind the curing molding, prepare porous desert greening brick.
2, the preparation method of porous desert greening brick according to claim 1 is characterized in that: described AlCl
3The concentration of solution is 1.0～3.0mol/L.
3, the preparation method of porous desert greening brick according to claim 1 is characterized in that: be 2～10 minutes described set time.
4, the preparation method of porous desert greening brick according to claim 1 is characterized in that: described curing time is 3～10 days.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101731615A CN101386502B (en) | 2008-10-28 | 2008-10-28 | Method for preparing porous desert greening brick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101731615A CN101386502B (en) | 2008-10-28 | 2008-10-28 | Method for preparing porous desert greening brick |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101386502A true CN101386502A (en) | 2009-03-18 |
| CN101386502B CN101386502B (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101731615A Expired - Fee Related CN101386502B (en) | 2008-10-28 | 2008-10-28 | Method for preparing porous desert greening brick |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101548615A (en) * | 2009-05-22 | 2009-10-07 | 山东省古窖藏酒与酒文化研究发展中心 | Porous nest brick 3D green plant technology |
| CN102379175A (en) * | 2011-11-02 | 2012-03-21 | 西北师范大学 | Nutritional type clay grass planting and sand stabilizing device |
| 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062535C (en) * | 1994-09-24 | 2001-02-28 | 倪亚范 | Manufacture of desert sand concrete and use |
| JP4507355B2 (en) * | 2000-06-07 | 2010-07-21 | 名古屋カレット株式会社 | Ground hardening method |
| CN1281542C (en) * | 2004-06-18 | 2006-10-25 | 桂林工学院 | Quarts sand building material and its process |
-
2008
- 2008-10-28 CN CN2008101731615A patent/CN101386502B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101548615A (en) * | 2009-05-22 | 2009-10-07 | 山东省古窖藏酒与酒文化研究发展中心 | Porous nest brick 3D green plant technology |
| CN102379175A (en) * | 2011-11-02 | 2012-03-21 | 西北师范大学 | Nutritional type clay grass planting and sand stabilizing device |
| 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 |
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| Publication number | Publication date |
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| CN101386502B (en) | 2011-06-22 |
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Granted publication date: 20110622 Termination date: 20111028 |