CN109293288B - A kind of multi-component industrial waste environment-friendly road building materials and preparation method thereof - Google Patents
A kind of multi-component industrial waste environment-friendly road building materials and preparation method thereof Download PDFInfo
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- CN109293288B CN109293288B CN201811107891.5A CN201811107891A CN109293288B CN 109293288 B CN109293288 B CN 109293288B CN 201811107891 A CN201811107891 A CN 201811107891A CN 109293288 B CN109293288 B CN 109293288B
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- 239000004566 building material Substances 0.000 title claims abstract description 31
- 239000002440 industrial waste Substances 0.000 title claims abstract description 24
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000003381 stabilizer Substances 0.000 claims abstract description 21
- 238000003723 Smelting Methods 0.000 claims abstract description 20
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000002699 waste material Substances 0.000 claims abstract description 19
- 239000010881 fly ash Substances 0.000 claims abstract description 17
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000010931 gold Substances 0.000 claims abstract description 17
- 229910052737 gold Inorganic materials 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 7
- 239000012190 activator Substances 0.000 claims abstract 11
- 229910021487 silica fume Inorganic materials 0.000 claims abstract 6
- 239000000203 mixture Substances 0.000 claims description 19
- 239000000843 powder Substances 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- 238000005056 compaction Methods 0.000 claims description 8
- 239000006185 dispersion Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- 150000002500 ions Chemical class 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 239000004115 Sodium Silicate Substances 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- -1 sodium fluorosilicate Chemical compound 0.000 claims description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- VPTUPAVOBUEXMZ-UHFFFAOYSA-N (1-hydroxy-2-phosphonoethyl)phosphonic acid Chemical group OP(=O)(O)C(O)CP(O)(O)=O VPTUPAVOBUEXMZ-UHFFFAOYSA-N 0.000 claims 3
- 238000010276 construction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000007613 environmental effect Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 238000011049 filling Methods 0.000 abstract description 3
- 239000004575 stone Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 12
- 239000011863 silicon-based powder Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 229910021645 metal ion Inorganic materials 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005527 soil sampling Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 210000004127 vitreous body Anatomy 0.000 description 1
Classifications
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/27—Water resistance, i.e. waterproof or water-repellent materials
-
- 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
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Road Paving Structures (AREA)
Abstract
本发明公开了一种多元工业废料环保型道路建材及其制备方法，属于环境保护和道路工程领域。该方法以工业废料黄金尾矿、冶铝废渣、粉煤灰、微硅粉为主要成分，通过添加微量活性激发剂和离子稳定剂，经物理、化学综合反应而制得环保型道路建筑材料。本发明所制备的环保型道路建材具有成本低、路用性能良好、水稳定性高、环保无污染等优点，可用于各等级道路的地基换填、路基和底基层填筑、施工便道等工程领域。不仅节约传统筑路所消耗的大量土石资源，同时充分利用多种工业废弃物，具有绿色环保和资源循环利用的技术优势，有很好的推广应用价值。The invention discloses a multi-component industrial waste environment-friendly road building material and a preparation method thereof, belonging to the fields of environmental protection and road engineering. The method takes industrial waste gold tailings, aluminum smelting waste slag, fly ash and microsilica as the main components, adds a trace amount of active activator and ionic stabilizer, and undergoes physical and chemical comprehensive reactions to prepare environmentally friendly road building materials. The environment-friendly road building material prepared by the invention has the advantages of low cost, good road performance, high water stability, environmental protection and no pollution, etc., and can be used for the replacement of foundations of roads of various grades, the filling of roadbeds and sub-bases, the construction of access roads and other projects. field. It not only saves a lot of earth and stone resources consumed by traditional road construction, but also makes full use of various industrial wastes. It has the technical advantages of green environmental protection and resource recycling, and has good promotion and application value.
Description
Technical Field
The invention relates to the fields of environmental protection, resource utilization and road engineering, in particular to a multi-industrial waste environment-friendly road building material and a method.
Background
The gold tailings are tailings left from gold ores through a mineral separation process, the aluminum smelting waste residues are solid wastes discharged by industrial extraction of aluminum oxide, the fly ash is fine ash attached to flue gas of a coal-fired power plant, and the micro silicon powder is ultrafine powder obtained by smelting ferrosilicon and collecting flue gas of industrial silicon. Because of the difference of raw ore components and the influence of a production process, the alkalinity of the aluminum smelting waste residue is high, gold tailings and the aluminum smelting waste residue contain partial heavy metal elements, and fly ash and micro silicon powder particles are extremely fine and easily cause dust raising, so that the consumption and the utilization of the industrial waste materials are severely restricted. At present, the industrial waste materials are mainly stored in a stockpiling mode, so that a large amount of land is occupied, the environment is polluted and damaged, and potential safety hazards are caused.
In road engineering construction, a large amount of soil and stone materials are consumed in the construction processes of replacement filling of foundations, filling of roadbeds and pavement subbase layers, construction of sidewalks and the like, and the traditional soil sampling field seriously damages land resources. With the rapid development of road construction and the improvement of social environment and resource protection consciousness, the phenomenon of soil source shortage in engineering construction is very severe. Therefore, bulk industrial waste materials such as gold tailings, waste slag from aluminum smelting, fly ash and micro silicon powder are subjected to economic and effective technical treatment, the physical, mechanical and road performances are improved, the pollution risk is eliminated, and the environment-friendly road building material is prepared and used in the field of road engineering construction.
Disclosure of Invention
The technical task of the invention is to provide a multi-industrial waste environment-friendly road building material aiming at the defects of the prior art.
The invention further aims to provide a preparation method of the road building material.
The invention takes industrial waste gold tailings, aluminum smelting waste residues, fly ash and micro silicon powder as main raw materials, and prepares the environment-friendly road building material by doping trace active excitant and ionic stabilizer, wherein the weight ratio of the raw materials is as follows:
the weight ratio of the raw materials is preferably as follows:
the gold tailings and the aluminum smelting waste residues in the raw materials are complemented by particle shape and particle size, so that the integral shear resistance is improved together. SiO in fly ash2And Al2O3The active ingredients of the vitreous body are subjected to hydration reaction under the condition of alkaline auxiliary solution of the aluminum smelting waste residue, and simultaneously, the alkaline silicon reaction with the aluminum smelting waste residue is also excited, so that a stable structure of a gel body is formed. The micro silicon powder has an amorphous spherical shape, can effectively fill pores, further generates a bonding effect with a gelled product, and improves the water resistance. The stabilizer is chelated with high-valence metal ions precipitated from the auxiliary solution to form a stable complex to inhibit Cu2+、Cr6+The leaching of metal ions can meet the requirements of environmental protection. An active excitant which can effectively excite the aluminum smelting waste slag under the alkaline condition andlarge amount of SiO in flyash2、Al2O3And CaO component for promoting Fe in colloidal silica and attached liquid3+、Al3+、Si4+The plasma and the radicals are mutually adsorbed and linked, so that the overall compactness and strength are greatly improved.
The active exciting agent can be a sodium fluosilicate and/or sodium silicate mixture, preferably a powder mixture of sodium fluosilicate and sodium silicate, wherein the mass percent of sodium fluosilicate in the powder mixture is 8-16%, preferably 10-14%.
The ion stabilizer can be hydroxyethylidene tetrasodium diphosphonate or hydroxyethylidene diphosphonic acid, preferably hydroxyethylidene diphosphonic acid, the purity (effective component content) of the ion stabilizer is required to be more than 99%, and the powder fineness is less than 0.2 mm.
The raw materials are mixed, stirred by adding water, formed and cured to obtain the environment-friendly road building material, but in order to ensure that the performance of the obtained road building material reaches the best, the preparation method preferably comprises the following steps:
(1) drying the gold tailings, the aluminum smelting waste residues and the fly ash at 105 +/-5 ℃ respectively, and removing aggregates or impurities with the particle size of more than 2mm for later use;
(2) uniformly stirring the micro silicon powder, the active excitant and the ionic stabilizer in proportion, wherein the rotating speed of a stirring blade is 300-350 r/min, and the stirring time is not less than 120s, so that the primary dispersion of the active excitant and the ionic stabilizer is realized;
(3) uniformly mixing the gold tailings, aluminum smelting waste residues and fly ash dried in the step (1) with the mixture of the micro silicon powder, the active exciting agent and the ionic stabilizer dispersed in the step (2) according to a proportion, and performing secondary dispersion to obtain a powder mixture;
(4) and (3) adding water into the powder mixture obtained in the step (3) according to the optimal water content parameter obtained in a heavy compaction test, uniformly mixing, compacting according to the controlled compaction degree, curing for 72 hours under the condition that the relative humidity is more than 90%, and finally obtaining the environment-friendly road building material through comprehensive reactions such as chemical excitation, physical action and the like and curing and stabilizing effects in a curing period.
The performance indexes and results of the environment-friendly road building material finished product are as follows:
the pH value is 7.5-9.0;
the cohesive force is more than 150 kPa;
the internal friction angle is greater than 35 degrees;
the unconfined compressive strength is more than 1.8MPa in 7 days;
the uniaxial compression modulus is more than 1600 MPa;
a California bearing ratio of greater than 50;
the softening coefficient is greater than 0.85.
Compared with the prior art, the environment-friendly road building material made of the multi-component industrial waste and the preparation method thereof have the following outstanding beneficial effects:
the environment-friendly road building material prepared by the invention is formed into a cementing body by physical improvement and chemical excitation among multiple industrial waste materials. Meanwhile, under the action of an active excitant and an ion stabilizer, the compactness and the water resistance of the cementing body are further improved, and high-valence metal ions are effectively chelated and stabilized, so that good physical, mechanical and road performance is realized, and the environmental protection requirement is met.
The environment-friendly road building material prepared by the invention takes gold tailings, waste slag from aluminum smelting, fly ash and micro silicon powder as main raw materials, the industrial waste accounts for more than 95%, the utilization rate is high, and the large-scale consumption and utilization of industrial waste materials can be effectively realized.
And thirdly, the environment-friendly road building material and the method prepared by the invention have simple process flow, fully utilize various industrial wastes, have low cost, have the product performance superior to the traditional earth stone material, do not generate environmental pollution, accord with the current road engineering application situation, and have high popularization and application value and development prospect.
Detailed Description
The multi-component industrial waste environment-friendly road building material and the method of the present invention will be described in detail with reference to specific examples. The examples are intended to illustrate the invention only and are not intended to limit the scope of the invention.
[ examples ] A method for producing a compound
The preparation method comprises the following steps:
(1) drying the gold tailings, the aluminum smelting waste residues and the fly ash at 105 +/-5 ℃ respectively, and removing aggregates or impurities with the particle size of more than 2mm for later use.
(2) The micro silicon powder, the active excitant and the ionic stabilizer are proportionally put into a vertical dry powder stirrer to be stirred at a constant speed, the rotating speed of a blade is 330r/min, the stirring time is 120s, and the primary dispersion of the active excitant and the ionic stabilizer is realized.
(3) And (3) uniformly mixing the gold tailings, the aluminum smelting waste residues and the fly ash prepared in the step (1) with the mixture of the micro silicon powder, the active exciting agent and the ionic stabilizer dispersed in the step (2) in proportion, and performing secondary dispersion to obtain a powder mixture.
(4) The maximum dry density and the optimum water content index are obtained by carrying out tests according to a heavy compaction method in geotechnical test method standard (GB/T50123) or highway geotechnical test regulation (JTG E40-2007).
(5) Adding water into the mixture according to the optimal water content, fully and uniformly mixing, carrying out static pressure forming according to the compaction control standard of engineering application, carrying out maintenance under the condition that the relative humidity is more than 90%, wherein the maintenance period is more than 72 hours, and carrying out comprehensive reactions such as chemical excitation, physical action and the like and a curing stabilization effect in the maintenance period to finally prepare the environment-friendly road building material.
Wherein the weight ratio of each raw material is shown in the following table:
[ COMPARATIVE EXAMPLES ]
The preparation method is the same as that of example 1.
Wherein the weight proportions of the raw materials are shown in the following table:
[ Property measurement ]
According to the national and industrial standards, the building materials obtained in the examples and the comparative examples are tested according to the indexes of pH value, cohesive force, large internal friction angle, 7-day unconfined compressive strength, uniaxial compression modulus, California bearing ratio (CBR value) and softening coefficient, and the test results are shown in the following table:
the measured data show that the building material has excellent performances in the aspects of cohesive force, compressive strength, bearing ratio, water stability and the like, and has high popularization and application values.
Claims (6)
Priority Applications (1)
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| CN201811107891.5A CN109293288B (en) | 2018-09-21 | 2018-09-21 | A kind of multi-component industrial waste environment-friendly road building materials and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811107891.5A CN109293288B (en) | 2018-09-21 | 2018-09-21 | A kind of multi-component industrial waste environment-friendly road building materials and preparation method thereof |
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| CN109293288B true CN109293288B (en) | 2021-03-26 |
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| CN113121166A (en) * | 2019-12-31 | 2021-07-16 | 中国石油化工股份有限公司 | Drilling solid waste treatment method and application |
| CN113003991B (en) * | 2021-04-16 | 2022-10-25 | 山东高速集团有限公司 | Gold tailing roadbed filling material and preparation method and application thereof |
| CN118894682A (en) * | 2024-07-24 | 2024-11-05 | 重庆工业职业技术学院 | A kind of environmentally friendly road building material made of multiple industrial waste and its preparation method |
Citations (3)
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|---|---|---|---|---|
| KR20050002629A (en) * | 2003-06-30 | 2005-01-07 | 세이코 엡슨 가부시키가이샤 | Ferroelectric thin film formation composition, ferroelectric thin film and method of fabricating ferroelectric thin film |
| CN104291764A (en) * | 2014-07-24 | 2015-01-21 | 北京新奥混凝土集团有限公司 | Road paving material employing engineering excavation soil and preparation method thereof |
| CN107488019A (en) * | 2017-09-12 | 2017-12-19 | 宁波纯恒固废科技有限公司 | A kind of non-sintered gold tailings brick and its preparation technology |
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- 2018-09-21 CN CN201811107891.5A patent/CN109293288B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050002629A (en) * | 2003-06-30 | 2005-01-07 | 세이코 엡슨 가부시키가이샤 | Ferroelectric thin film formation composition, ferroelectric thin film and method of fabricating ferroelectric thin film |
| CN104291764A (en) * | 2014-07-24 | 2015-01-21 | 北京新奥混凝土集团有限公司 | Road paving material employing engineering excavation soil and preparation method thereof |
| CN107488019A (en) * | 2017-09-12 | 2017-12-19 | 宁波纯恒固废科技有限公司 | A kind of non-sintered gold tailings brick and its preparation technology |
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