CN107488008B - Halloysite soil cement and preparation method thereof - Google Patents
Halloysite soil cement and preparation method thereof Download PDFInfo
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- CN107488008B CN107488008B CN201710608215.5A CN201710608215A CN107488008B CN 107488008 B CN107488008 B CN 107488008B CN 201710608215 A CN201710608215 A CN 201710608215A CN 107488008 B CN107488008 B CN 107488008B
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- halloysite
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- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229910052621 halloysite Inorganic materials 0.000 title claims abstract description 70
- 239000004568 cement Substances 0.000 title claims abstract description 24
- 239000002689 soil Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title description 5
- 238000001354 calcination Methods 0.000 claims abstract description 29
- 239000002071 nanotube Substances 0.000 claims abstract description 27
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 24
- 239000000843 powder Substances 0.000 claims abstract description 11
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000008014 freezing Effects 0.000 claims description 2
- 238000007710 freezing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000011859 microparticle Substances 0.000 abstract description 3
- 229920003041 geopolymer cement Polymers 0.000 description 6
- 239000011413 geopolymer cement Substances 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/04—Heat treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/006—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing mineral polymers, e.g. geopolymers of the Davidovits type
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Revetment (AREA)
Abstract
The invention discloses halloysite soil cement which comprises, by weight, 80-120 parts of metakaolin, 5-15 parts of sodium hydroxide, 5-8 parts of sodium silicate and 2.5-4.5 parts of halloysite. The method for producing the halloysite comprises calcining a halloysite nanotube at a temperature of 750-850 ℃ to form a halloysite fine powder. The halloysite nanotubes are calcined into halloysite micropowder, so that the micro particles of the halloysite micropowder can fill gaps in the soil cement, and the gaps in the hardened soil cement are reduced, so that the compressive strength of the soil cement is improved. The invention is used for soil cement.
Description
Technical Field
The invention relates to halloysite soil cement and a preparation method thereof.
Background
The lolite nanotubes (HNTs) are hollow tubular structures with complete shapes, do not end-capping, have no curling fracture or sleeving phenomenon, and are natural porous nanocrystal materials. The long diameter is comparatively high, and the crystal has unique surface chemical properties, and an inorganic network or polymer formed by linking through hydrogen bonding or charge transfer can transfer partial pressure and has unique crystallization behavior.
The geopolymer cement is formed by metakaolin under the combined action of alkaline activator, additive and other admixture, and has various performances similar to those of common Portland cement, but most of the performances are superior to those of common Portland cement, especially the performances of high temperature resistance, durability and early strength of quick hardening. However, the compressive strength of the geocement is insufficient.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides halloysite soil cement with high compressive strength and a preparation method thereof.
The solution of the invention for solving the technical problem is as follows:
the halloysite soil cement comprises, by weight, 80-120 parts of metakaolin, 5-15 parts of sodium hydroxide, 5-8 parts of sodium silicate and 2.5-4.5 parts of halloysite.
As a further improvement of the scheme, the kaolin clay comprises 100 parts of metakaolin, 10 parts of sodium hydroxide, 7 parts of sodium silicate and 3.5 parts of halloysite in parts by weight.
As a further improvement of the scheme, the water-saving paint also comprises 55 parts of water.
A preparation method of halloysite soil cement comprises the step of calcining halloysite nanotubes at a temperature of 750-850 ℃ to form halloysite micropowder.
As a further improvement of the scheme, before the halloysite nanotubes are calcined, the halloysite nanotubes are firstly frozen to be below 40 ℃ below zero, and then the frozen halloysite nanotubes are directly put into a furnace body with the temperature reaching 750-850 ℃ for calcination to form halloysite micro powder.
As a further improvement of the above scheme, a calcination pipeline which descends spirally is arranged in the furnace body, two ends of the calcination pipeline extend out of the furnace body, the upper end of the calcination pipeline is a feed opening, a feeding fan is arranged on the calcination pipeline, a heating air channel is communicated with the calcination pipeline at the rear of the feeding fan, two ends of the heating air channel are respectively communicated with the calcination pipeline and the furnace body, a heat supply fan is arranged in the heating air channel, and frozen halloysite nanotube powder is fed from the feed opening, so that the halloysite nanotube powder is calcined.
As a further improvement of the scheme, the halloysite is calcined, mixed with water and fully stirred, then added into a mixture of metakaolin, sodium hydroxide and sodium silicate, and then stirred and mixed.
The invention has the beneficial effects that: the halloysite soil cement comprises, by weight, 80-120 parts of metakaolin, 5-15 parts of sodium hydroxide, 5-8 parts of sodium silicate and 2.5-4.5 parts of halloysite. The method for producing the halloysite comprises calcining a halloysite nanotube at a temperature of 750-850 ℃ to form a halloysite fine powder. The halloysite nanotubes are calcined into halloysite micropowder, so that the micro particles of the halloysite micropowder can fill gaps in the soil cement, and the gaps in the hardened soil cement are reduced, so that the compressive strength of the soil cement is improved. The invention is used for soil cement.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
Fig. 1 is a schematic structural view of a furnace body according to an embodiment of the present invention.
Detailed Description
The conception, the specific structure, and the technical effects produced by the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings to fully understand the objects, the features, and the effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention. In addition, all the coupling/connection relationships mentioned herein do not mean that the components are directly connected, but mean that a better coupling structure can be formed by adding or reducing coupling accessories according to specific implementation conditions. The technical characteristics of the invention can be combined interactively on the premise of not conflicting with each other.
Referring to fig. 1, this is an embodiment of the invention, specifically:
the halloysite soil cement comprises, by weight, 100 parts of metakaolin, 10 parts of sodium hydroxide, 7 parts of sodium silicate, 3.5 parts of halloysite and 55 parts of water. The method for producing the halloysite comprises calcining a halloysite nanotube at a temperature of 750-850 ℃ to form a halloysite fine powder. The halloysite nanotubes are calcined into halloysite micropowder, so that the micro particles of the halloysite micropowder can fill gaps in the soil cement, and the gaps in the hardened soil cement are reduced, so that the compressive strength of the soil cement is improved.
In the embodiment, before the halloysite nanotube is calcined, industrial freezing equipment for the halloysite nanotube is cooled to below 40 ℃ below zero, liquid nitrogen can be further added into the halloysite nanotube to freeze the halloysite to below 120 ℃ below zero or even below 200 ℃ under normal pressure, and then the frozen halloysite nanotube is directly put into a furnace body with the temperature reaching 750-850 ℃ to be calcined, so that a halloysite micro powder is formed. The thermal stress and the nitrogen gas flow generated by the heating and gasification of the liquid nitrogen can uniformly crush the halloysite nanotubes, so that the granularity of the halloysite micropowder is smaller than that of the traditional burning process. Thereby further improving the pressure resistance of the present invention.
In order to facilitate heating and calcining of the halloysite nanotube, a spirally descending calcining pipeline 1 is arranged in a furnace body for calcining the halloysite nanotube, two ends of the calcining pipeline 1 extend out of the furnace body, a feed opening is arranged at the upper end of the calcining pipeline 1, a feeding fan 2 is arranged on the calcining pipeline 1, a heating air channel 3 is communicated on the calcining pipeline 1 behind the feeding fan 2, two ends of the heating air channel 3 are respectively communicated with the calcining pipeline 1 and the furnace body, a heat supply fan 4 is arranged in the heating air channel 3, and frozen halloysite nanotube powder is fed from the feed opening, so that the calcining of the halloysite nanotube powder is realized. Therefore, the halloysite micro powder can be prevented from flying everywhere, and the halloysite nanotube can be effectively and quickly heated.
After many experiments, the following data were obtained without pretreatment of frozen halloysite:
therefore, too much or too little of the geopolymer cement is not suitable, and too little of the geopolymer cement is not enough to fill the gaps in the geopolymer cement, but too much of the geopolymer cement influences the compression resistance of the geopolymer cement.
After the pretreatment of the frozen halloysite, the compressive strengths of numbers 2 to 5 are all improved by 5 to 15 percent on the basis of the above table.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (3)
1. A method for preparing halloysite soil cement is characterized by comprising the following steps: the halloysite soil cement comprises, by weight, 80-120 parts of metakaolin, 5-15 parts of sodium hydroxide, 5-8 parts of sodium silicate and 2.5-4.5 parts of halloysite; the halloysite is a halloysite micropowder, and the forming process is as follows: before calcining the halloysite nanotube, firstly freezing the halloysite nanotube to below 40 ℃ below zero, and then directly putting the frozen halloysite nanotube into a furnace body with the temperature reaching 750-850 ℃ for calcining, thereby forming halloysite micropowder.
2. The method for preparing halloysite soil cement according to claim 1, which is characterized by comprising the following steps: the spiral descending calcining pipeline (1) is arranged in the furnace body, the two ends of the calcining pipeline (1) extend out of the furnace body, the upper end of the calcining pipeline (1) is a feed opening, a feeding fan (2) is arranged on the calcining pipeline (1), a heating air channel (3) is communicated with the rear portion of the feeding fan (2) on the calcining pipeline (1), the two ends of the heating air channel (3) are communicated with the calcining pipeline (1) and the furnace body respectively, and a heating air fan (4) is arranged in the heating air channel (3).
3. The method for preparing halloysite soil cement according to claim 1, which is characterized by comprising the following steps: the halloysite micro powder formed by calcining the halloysite nanotube is mixed with water and fully stirred, then added into a mixture of metakaolin, sodium hydroxide and sodium silicate, and then stirred and mixed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710608215.5A CN107488008B (en) | 2017-07-24 | 2017-07-24 | Halloysite soil cement and preparation method thereof |
| PCT/CN2018/073682 WO2019019577A1 (en) | 2017-07-24 | 2018-01-23 | Halloysite geopolymeric cement and manufacturing method therefor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710608215.5A CN107488008B (en) | 2017-07-24 | 2017-07-24 | Halloysite soil cement and preparation method thereof |
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| CN107488008A CN107488008A (en) | 2017-12-19 |
| CN107488008B true CN107488008B (en) | 2020-02-07 |
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| CN107488008B (en) * | 2017-07-24 | 2020-02-07 | 佛山科学技术学院 | Halloysite soil cement and preparation method thereof |
| CN115697708A (en) | 2020-06-24 | 2023-02-03 | 爱克发胶印有限公司 | Lithographic printing plate precursor |
| CN114988809A (en) * | 2022-06-14 | 2022-09-02 | 中国科学院广州地球化学研究所 | Method for preparing limestone calcined clay cement by using halloysite |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103282325A (en) * | 2010-10-29 | 2013-09-04 | 约瑟夫·达维多维茨 | Geopolymeric cement based on calcium poly (iron-aluminosilicate) and method for its production |
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| CN102992717A (en) * | 2012-11-21 | 2013-03-27 | 西南科技大学 | Preparation method for high-molecular compound-containing metakaolin-based geopolymer cement |
| US9604880B2 (en) * | 2014-08-27 | 2017-03-28 | Louisiana Tech Research Corporation | Geopolymer with nanoparticle retardant and method |
| FR3033165A1 (en) * | 2015-02-27 | 2016-09-02 | Imerys Ceram France | |
| CN106082898B (en) * | 2016-06-16 | 2018-07-31 | 中国建筑股份有限公司 | Geopolymer composite material of 3D printing and its preparation method and application |
| CN106542752B (en) * | 2016-10-19 | 2018-08-31 | 长安大学 | A kind of poly- cement material of soil and preparation method thereof |
| CN106915923A (en) * | 2017-02-21 | 2017-07-04 | 王聚会 | A kind of metakaolin base inorganic polymeric coating and preparation method |
| CN107488008B (en) * | 2017-07-24 | 2020-02-07 | 佛山科学技术学院 | Halloysite soil cement and preparation method thereof |
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- 2017-07-24 CN CN201710608215.5A patent/CN107488008B/en active Active
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- 2018-01-23 WO PCT/CN2018/073682 patent/WO2019019577A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103282325A (en) * | 2010-10-29 | 2013-09-04 | 约瑟夫·达维多维茨 | Geopolymeric cement based on calcium poly (iron-aluminosilicate) and method for its production |
Non-Patent Citations (1)
| Title |
|---|
| Effects of halloysite in kaolin on the formation and properties of geopolymers;Z.Zhang等;《Cement & Concrete Composites》;20121231;第709-715页 * |
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| CN107488008A (en) | 2017-12-19 |
| WO2019019577A1 (en) | 2019-01-31 |
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