CN104402371B - Road pavements of a kind of building waste compound iron mine tailing and preparation method thereof - Google Patents
Road pavements of a kind of building waste compound iron mine tailing and preparation method thereof Download PDFInfo
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- CN104402371B CN104402371B CN201410743825.2A CN201410743825A CN104402371B CN 104402371 B CN104402371 B CN 104402371B CN 201410743825 A CN201410743825 A CN 201410743825A CN 104402371 B CN104402371 B CN 104402371B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000002699 waste material Substances 0.000 title claims abstract description 79
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 39
- 150000001875 compounds Chemical class 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 97
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 77
- 239000003595 mist Substances 0.000 claims abstract description 36
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 23
- 235000019504 cigarettes Nutrition 0.000 claims abstract description 18
- 239000002893 slag Substances 0.000 claims abstract description 18
- 230000005611 electricity Effects 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims description 39
- 239000000203 mixture Substances 0.000 claims description 32
- 239000004568 cement Substances 0.000 claims description 29
- 239000004567 concrete Substances 0.000 claims description 17
- 238000000227 grinding Methods 0.000 claims description 13
- 239000000292 calcium oxide Substances 0.000 claims description 9
- 108090000790 Enzymes Proteins 0.000 claims description 6
- 102000004190 Enzymes Human genes 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 6
- 239000000920 calcium hydroxide Substances 0.000 claims description 6
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000002689 soil Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- 108010013043 Acetylesterase Proteins 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 108010047754 beta-Glucosidase Proteins 0.000 claims description 2
- 102000006995 beta-Glucosidase Human genes 0.000 claims description 2
- 239000011295 pitch Substances 0.000 claims description 2
- -1 earth Substances 0.000 description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 25
- 239000002585 base Substances 0.000 description 24
- 239000000843 powder Substances 0.000 description 22
- 230000006835 compression Effects 0.000 description 20
- 238000007906 compression Methods 0.000 description 20
- 239000000835 fiber Substances 0.000 description 17
- 150000003839 salts Chemical class 0.000 description 17
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 16
- 239000004698 Polyethylene Substances 0.000 description 16
- 230000004048 modification Effects 0.000 description 16
- 238000012986 modification Methods 0.000 description 16
- 229920000573 polyethylene Polymers 0.000 description 16
- 230000002708 enhancing effect Effects 0.000 description 15
- 238000010276 construction Methods 0.000 description 14
- 239000002994 raw material Substances 0.000 description 12
- 239000004743 Polypropylene Substances 0.000 description 10
- 229920001155 polypropylene Polymers 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 239000003638 chemical reducing agent Substances 0.000 description 9
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000011707 mineral Substances 0.000 description 9
- 235000010755 mineral Nutrition 0.000 description 9
- 239000000178 monomer Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 235000012255 calcium oxide Nutrition 0.000 description 8
- 239000001253 polyvinylpolypyrrolidone Substances 0.000 description 8
- 235000013809 polyvinylpolypyrrolidone Nutrition 0.000 description 8
- 229920000523 polyvinylpolypyrrolidone Polymers 0.000 description 8
- 238000011160 research Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000013461 design Methods 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000004566 building material Substances 0.000 description 6
- 239000011575 calcium Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 6
- 239000011734 sodium Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002023 wood Substances 0.000 description 6
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- 230000001172 regenerating effect Effects 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000012190 activator Substances 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 4
- 238000006116 polymerization reaction Methods 0.000 description 4
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- 239000012634 fragment Substances 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 238000007669 thermal treatment Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 229920010126 Linear Low Density Polyethylene (LLDPE) Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 238000007720 emulsion polymerization reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229920005646 polycarboxylate Polymers 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- WROUWQQRXUBECT-UHFFFAOYSA-N 2-ethylacrylic acid Chemical compound CCC(=C)C(O)=O WROUWQQRXUBECT-UHFFFAOYSA-N 0.000 description 1
- 239000004160 Ammonium persulphate Substances 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 101000993059 Homo sapiens Hereditary hemochromatosis protein Proteins 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 1
- 235000019395 ammonium persulphate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000004067 bulking agent Substances 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- SPQYBMRLUGUBQX-UHFFFAOYSA-J calcium;iron(2+);tetrahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[Ca+2].[Fe+2] SPQYBMRLUGUBQX-UHFFFAOYSA-J 0.000 description 1
- 239000010430 carbonatite Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- RKYSWCFUYJGIQA-UHFFFAOYSA-H copper(ii) arsenate Chemical compound [Cu+2].[Cu+2].[Cu+2].[O-][As]([O-])([O-])=O.[O-][As]([O-])([O-])=O RKYSWCFUYJGIQA-UHFFFAOYSA-H 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 229910001653 ettringite Inorganic materials 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010528 free radical solution polymerization reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000011396 hydraulic cement Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
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- 239000011159 matrix material Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000002481 rotproofing Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000003923 scrap metal Substances 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010420 shell particle Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- 238000010792 warming Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Road Paving Structures (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses road pavements of a kind of building waste compound iron mine tailing and preparation method thereof, based on the total weight of this road pavements, comprise slag that 1-10 % by weight produces by domestic garbage burning electricity generation and the obtained activated micro mist of tool of cigarette ash, 25-50 % by weight iron tailings, 45-70 % by weight is separated obtained earth material from building waste, and the exciting agent of 0.02-0.06 % by weight.Road pavements of the present invention, while meeting road index request, makes building waste be fully used.
Description
Technical field
The present invention relates to road pavements of a kind of building waste compound iron mine tailing and preparation method thereof.
Background technology
Building waste mainly refers to that construction, unit in charge of construction or individual build, repair, remove and carry out all kinds of waste such as earth, waste residue, mortar produced in house decoraton process to all kinds of structures, buildings etc.The essentially consist of the building waste that dissimilar building structure produces is consistent, main component comprises earth, the mortar be scattered, waste residue, bituminous concrete fragment, piling block remaining Steel Concrete pile crown, cement concrete, pick cutter produce masonry, the wrapping material of various scrap metal, timber, all kinds of building material product, wall insulated board, the waste material that fitment process produces and other waste.
In addition, in the last few years, along with the fast development in mine, mill tailings amount constantly increases, and according to incompletely statistics, about have the iron selection tailings of 700,000,000 tons to be dropped every year at present, these iron selection tailings sand cumulative volumes reach more than 3 billion cubic meters.A large amount of mine tailing and unreasonable problems of storing up generation thereof, cause the great attention of domestic relevant departments and knowledgeable people.
Some scientific researches have been carried out in comprehensive utilization in recent years for mine tailing, are usually all to adopt iron tailings to replace cement clinker to produce siliceous raw material, to reduce raw grinding energy consumption and obviously to improve burnability of raw material.But described utilization is for the manufacture of cement, energy expenditure is still larger.In addition, compared with other municipal wastes, building waste has the features such as low toxicity, harmless, resourcebility utilization, along with the fast development of urban construction, natural materials will be day by day exhausted, if building waste is carried out effective regeneration utilization by certain technology, not only can solve this contradiction, the harm of rubbish to environment can also be eliminated, realize economic Sustainable development.China is more late to the research of building waste recycle, though achieve certain achievement in research at present, but still lacks comparatively systematic research, lacks standard and the code of perfect regeneration techniques.In China, building different kinds of roads needs a large amount of materials, if can be used in road engineering by building waste, then will produce great economic worth.
Simultaneously, the factors such as the diversity of building waste and the standard-required of road pavements increasingly stringent, the application of building waste in road pavements is subject to many limitations, and such as building waste utilization ratio is not high, ratio in road pavements shared by building waste is less, etc.
CN102992713A discloses a kind of cement and soil-solidified-agent comprehensive stability iron tailings road surfaces basic unit method, it is characterized in that determining that Mixture Ratio is cement according to shop experiment: iron tailings sand: gravel: solidifying agent=4:48:48:0.02 and optimum moisture content wopt=8.5% and maximum dry density ρ max=2.181g/cm
3, the solidifying agent of the actual employing in building site increases by 0.001%; When adopting road-mix construction, cement dose increases by 1%; When adopting concentrated plant mixing method construction, cement dose increases by 0.5%; Solidifying agent need be diluted 100 times during construction, solidifying agent fully shakes up before using, and precipitation is fully dissolved; Between preserving period, relative humidity remains on 95% ~ 98%, and preserving period is 7 ~ 10 days.
CN101239804A discloses a kind of method adopting building waste to manufacture building materials, it sorts successively to urban architecture material, magnetic separation, primary fragmentation and gravitational segregation, building waste is separated into heavy material, light material and mineral materials, and by described mineral materials after secondary breaking for the manufacture of material of construction, the raw material of described material of construction comprises: fibre material 5-10 part, mineral materials 40-60 part, low-water cement 20-30 part and unclassified stores 0-30 part, the production process of described material of construction is by fibre material, mineral materials and unclassified stores mix, add low-water cement again to mix, add water stirring pulping, insert vibratory compaction or extrusion forming in mould, building slab section product is formed after natural curing.In this patent documentation, with only the mineral materials in building waste, building waste overall utilization is low, obtain the complex steps of mineral materials, and it is not high in the ratio of material of construction Minerals material, time even more important, this building waste is for the preparation of plate product, instead of requires higher road pavements for the preparation of to intensity, water tolerance.
CN101348343A discloses a kind of building materials utilizing building waste to produce and preparation method thereof, the technical problem solved be make material configuration simple, reduce costs, it is by the following technical solutions: a kind of building materials utilizing building waste to produce, the weight ratio number comprised is: building waste 85-97 part, unslaked lime 3-15 part, described building waste comprises masonry and concrete, effective CaO content >=85% in described unslaked lime.The method comprises the following steps: (1) carries out primary election to building waste; (2) building waste starting material being crushed to granularity for being greater than 0 to 4mm, being milled to by the unslaked lime of CaO content >=85% and being less than 100 orders by comminuted starting materials; (3) starting material coordinate, and the building waste pulverized and unslaked lime fine powder are transported to slaking silos by weight building waste 85-97 part, unslaked lime 3-15 part after being mixed evenly, stop 1-3 hour; (4) shaping, enter stirrer from slaking silos material out, after adding the 5-8% water mix of total dry powder consumption, be delivered to feed bin, brick pressing machine is pressed into the section bar of different shape, the pressure of use is 200-1500 ton, 1-3 second clamping time; (5) autoclave curing is 190-230 DEG C in temperature, and pressure is maintenance 6-10 hour under the condition of 7-10kg, is building materials finished product.In this patent documentation, be mainly used for manufacturing shaping building material product, can not be used as road pavements, such as intensity is nowhere near.
WO2006033561A1 discloses a kind of method of building waste sorting.In the process, the building castoff being ground into predetermined size is joined in the liquid of settling bath, and in groove, be isolated into various component according to proportion, wherein, described liquid has the reference specific gravity low but higher than the proportion of remaining ingredient than the proportion reclaiming component, thus only makes the component that will reclaim be separated by being deposited to the bottom of described settling bath.According to described method, can easily other impurity be included in building castoff be separated with the aggregate reused of high-quality.Particularly, suitable adjustment is carried out to the reference specific gravity of separating liquid, thus even can easily the various impurity (tile, common brick, bituminous concrete, cement lumps etc.) heavier than water be separated with the aggregate that can reuse.The sorting of what the document was mainly paid close attention to is building waste.
JP2006257681A discloses a kind of method utilizing building waste to manufacture mineral material, the method effectively can reduce the volatilization of the volatile organic compounds that building waste produces when pyroprocessing, it is by burning shell and pulverizing the volatile organic compounds that produces when the porousness shell particle that produces and described material adsorb building waste pyroprocessing, thus makes the more green and safety of the recycling of building waste.The method cost compare is high.
KR100938212B1 discloses a kind of composition for building the road, and said composition comprises 20-40 % by weight resin, 22-27 % by weight environmental protection is gathered materials, 22-27 % by weight recirculation chip material, 13-18 weight percent filler, 1.5-5 weight pigment and and 1.5-3 % by weight common additives.Said composition cost contains a large amount of resin, and cost compare is high and not ageing-resistant, in addition owing to lacking cement component, and at least intensity wretched insufficiency.
Non-patent literature " comprehensive utilizating research of prepared from tailing sand of iron ore in manufacture of cement ", Qiao Shuan etc., Modern Mineral, phase September the 9th in 2009,120-121 page, discloses a kind of prepared from tailing sand of iron ore of Qinhuangdao Miao Gou iron ore or Qinhuangdao Qian Ye Cement Co., Ltd of adopting and produces the method for large platform sandstone used as siliceous raw material production cement.
Non-patent literature " experimental study that construction refuse regenerated micro mist utilizes ", Ma Chuntao etc., Ningxia engineering, 8th volume the 1st phase, in March, 2009 discloses the method for manufacture and use thereof of construction refuse regenerated micro mist, wherein the raw material of regenerative micro powder is in the processes such as regenerative bone material by concrete fragmentation, screening, inevitably produces the fine powder material accounting for regeneration aggregate quality about 10%, particle diameter <0.16mm, and the high specific surface-area that grinding obtains micro mist is only 735.4m
2/ kg.
Need a kind of road pavements of building waste compound iron mine tailing, make the utilization ratio of building waste and iron tailings high and the performance of this road pavements can reach the performance of current road pavements used.
Summary of the invention
In order to overcome the above-mentioned problems in the prior art, the present inventor is through further investigation, propose new solution, make the main raw material of road pavements be building waste and iron tailings, and the road pavements performance that building waste and iron tailings can be made to obtain fully utilizing, preparing completely can be up to standard.The invention provides following technical scheme:
On the one hand, provide a kind of road pavements, based on the total weight of this road pavements, it comprises slag that 1-10 % by weight produces by domestic garbage burning electricity generation and the obtained activated micro mist of tool of cigarette ash, 25-50 % by weight iron tailings, 45-70 % by weight is separated obtained earth material from building waste, and the exciting agent of 0.02-0.06 % by weight.
The content of the activated micro mist of the tool extracted in described building waste is preferably 5-10 % by weight, more preferably 8-10 % by weight.
The content of described iron tailings is preferably 30-50 % by weight, more preferably 30-40 % by weight.
The described content being separated obtained earth material from building waste is preferably 45-70 % by weight, more preferably 50-60 % by weight.
The content of described exciting agent is preferably 0.02-0.06 % by weight, more preferably 0.03-0.05 % by weight.
Described road pavements does not preferably comprise cement, pitch or cement concrete.
The activated micro mist of described tool can be pulverized by the slag that will be produced by domestic garbage burning electricity generation and cigarette ash, grinding obtains.
The specific surface area of the activated micro mist of described tool can be 1000-3000m
2/ kg.
Described earth material can be the soil and great soil group impurity separated from building waste.
Described exciting agent can be bases exciting agent and/or salt exciting agent.
In road pavements of the present invention, exciting agent can be compound bio solidifying agent, can be also bases exciting agent and/or salt exciting agent, or be their combination.
SiO in described iron tailings
2content is preferably 35.0-45.0 % by weight, Fe
2o
3content is preferably 20.0-22.0%, Al
2o
3content is preferably 13.5-16.5, and CaO content is preferably 6.0 % by weight-10.0 % by weight, and content of MgO is preferably 3.0-3.3 % by weight, and is preferably mixed with based on iron tailings total weight 1.0-5.0%, the calcium hydroxide of preferred 2.0-3.0%.
In the present invention, the agent that can be excited of micro mist and iron tailings effectively excites, and mutual Cooperative Excitation effect can occur therebetween for it, such as, can be excited iron, calcium, aluminium active substance in micro mist and iron tailings by following reaction:
3Ca(OH)
2+Al
2O
3+3CaSO
4+28H
2O→3CaO·All
2O
3·3CaSO
4·31H
2O；
3Ca(OH)
2+Al
2O
3+3CaSO
4+9H
2O→3CaO·Al
2O
3·CaSO
4·12H
2O
Wherein sodium sulfate can react the calcium sulfate of generation with calcium hydroxide, and calcium sulfate can generate high sulfur type and low sulfur type hydrated calcium aluminate sulfate crystal respectively with drated calcium aluminate, plays cementing, that densification stablizes ore deposit tailings structure effect.Therefore the present inventor finds, in iron tailings, preferably mixes calcium hydroxide iron tailings structure can be made stable, fine and close further, and can reduce the consumption of calcium hydroxide in exciting agent.The present inventor studies discovery, and by mixing the calcium hydroxide of 1.0-5.0 % by weight in iron tailings, the intensity of road pavements can improve 5-10% usually.
The iron tailings of preferred high silicon, high calcium and high Fe content in the present invention, is more conducive to the carrying out of above-mentioned reaction and the stable of iron tailings and densification.
Existing be that in the regenerative micro powder preparation of raw material, its raw material adopted is all that waste concrete prepares the thin particulate matter produced in aggregate substantially, and the micro mist of preparation is difficult to obtain larger specific surface area with building waste.More it is pointed out that existing be in the regenerative micro powder preparation of raw material with building waste, in order to make the building that obtains or road pavements meet the demands, only substituting part of cement in concrete material with regenerative micro powder, and cement can not be substituted completely.
The beat all discovery of the present inventor, by the slag produced by domestic garbage burning electricity generation and cigarette ash are carried out pulverizing, grinding, the micro mist that the performance of high surface area is very excellent can be obtained, it has exceeded cement at some aspect of performance after being excited by exciting agent of the present invention, make it possible to substitute cement usually used in road pavements completely, and the performance index required by urban road laying can be reached simultaneously.Infer its reason, may be because the concrete in building waste is compared with cigarette ash with the slag produced by domestic garbage burning electricity generation, fragility is comparatively large, activity is lower, and these features cause the micro mist prepared by regenerated waste concrete to be difficult to the cement substituted completely in road pavements.By contrast, the slag that domestic garbage burning electricity generation produces and cigarette ash grind the micro mist obtained and are used as road pavements when reacting, the SiO in chemical constitution
2and Al
2o
3component such as calcium hydroxide reaction in isoreactivity component and exciting agent, generates the products such as hydrated calcium silicate, drated calcium aluminate or hydrated calcium aluminate sulfate, thus forms cement strength.
The present inventor also finds, the specific surface area of the activated micro mist of tool is only at 1000-3000m
2effectively can play the substitution effect of cement in the scope of/kg, make the ultimate compression strength needed for road pavements acquisition.When the specific surface area of micro mist is less than 1000m
2during/kg, then the lateral reactivity of this micro mist is inadequate, such as, make the ultimate compression strength of road, resistance to cleavage not enough.And when specific surface area is greater than 3000m
2during/kg, then performance improves no longer significantly and preparation cost increase.By contrast, when using discarded concrete to carry out the grinding of micro mist, because its water-absorbent is large, be easy to cause humidity, and due to complicated component, comprise the sand grains that certain proportion is difficult to grind, even if be also difficult to obtain 700m by grinding
2the specific surface area of/more than kg, the features such as described water-absorbent is large in addition, intensity is low, cause the cement that only can substitute finite part in road pavements.The slag that in the present invention, domestic garbage burning electricity generation produces and the grinding of cigarette ash can be carried out under grinding medium exists, described grinding medium be preferably zirconium silicate ball and yttrium stable zirconium oxide ball with the blending agent of 2:1 ~ 3:1 (weight ratio).
Along with the numerous and confused foundation of MSW Incineration Plant, the slag that domestic garbage burning electricity generation produces and cigarette ash also become the rubbish (secondary waste) needing process badly.The present invention finds through further investigation, can be effective in road pavements by the micro mist that described slag and cigarette ash grinding obtain, make again these secondary wastes be fully used simultaneously.
In road pavements of the present invention, exciting agent can be compound bio solidifying agent, also can be bases exciting agent and/or salt exciting agent, such as, or be their combination, the weight ratio of compound bio solidifying agent and bases exciting agent and/or salt exciting agent can be (1 ~ 2): (3 ~ 5).
Described compound bio solidifying agent can be hard native enzyme, beta-glucosidase enzyme and Phosphoric acid esterase with (10 ~ 15): (1 ~ 2): the mixture of (2 ~ 3) weight ratio.
By the particular combination of these 3 kinds of enzymes, can make, between various enzyme, mutual promoting action occurs, the use of such as Phosphoric acid esterase can strengthen the water stability of hard native enzyme.In the present invention, when using the road pavements of described compound bio solidifying agent to be used as base material, the advantageous particularly stability having earthen materia, make it possible to remarkable unconfined compression strength, performance is drawn in bending resistance, resistance to compression and anti-bending rollering modulus, especially unconfined compression strength can be made relative to the road pavements not adding described compound bio solidifying agent or use single creature exciting agent (such as hard native enzyme), as when as subbase course material, can improve at least about 18%, this synergy is that those skilled in the art can not expect according to existing knowledge.Compound bio solidifying agent of the present invention can also add the stability of paver, extends the life-span of road, and in long-term existence basic unit, can keep solidification effect for a long time.
In road pavements of the present invention, about described bases exciting agent and/or salt exciting agent, be preferably the combination of bases exciting agent and salt exciting agent, i.e. compound activator.Alkali-activated carbonatite mainly increases the OH of slurry
-concentration. improve liquid phase basicity, make the pH value of liquid phase keep about about 12, this is conducive to formation and the C of ettringite
3s, C
2the raising of S hydration rate, thus the activity exciting micro mist in road pavements.
The present inventor also finds, may be difficult to make road pavements reach necessary requirement by single alkali-activator, the matching of exciting agent and other material is poor, and the stability of road pavements is undesirable.The present inventor, through large quantity research and test, seeks the optimum matching relation of compound activator and described micro mist and earth class raw material, and final discovery also preferably adds a certain amount of salt exciting agent usually.
Described compound activator is the composition of bases exciting agent A and salt exciting agent B, and the weight ratio of exciting agent A and B is 2:1-6:1; Bases exciting agent A is total weight 20-30 % by weight Ca (OH) based on bases exciting agent A
2, 10-20 % by weight NaOH, 20-40 % by weight Na
2cO
3with 20-30 % by weight Na
2siO
39H
2the mixture of O; Salt exciting agent B is total weight 20-40 % by weight Na based on salt exciting agent B
2sO
4, 20-30 % by weight CaSO
42H
2o, 10-20 % by weight CaCl
2with 20-30 % by weight Ca
2sO
4mixture.
This road pavements can also comprise the modification of 1-5 % by weight from building waste and the lumber fibre material of enhancing, and the lumber fibre material of wherein said modification and enhancing obtains by the following method:
(1) be cut into short for the culled wood in building waste the segment materials that maximum diameter is 0.5-2cm;
(2) short segment materials of cutting is placed in stirred pot, add the aqueous solution of surface-modifying agent, stir evenly, the mass ratio of segment materials and surface-modifying agent is 200:1-500:1, described surface-modifying agent is polyvinylpolypyrrolidone, and in solution, the concentration of polyvinylpolypyrrolidone is 20-30 % by weight;
(3) in the segment materials after surface modification, polyethylene powders, polypropylene powder or its mixture is added, mix, make the surface attachment polyethylene powders of segment materials, polypropylene powder or its mixture, the mass ratio of described segment materials and polyethylene, polypropylene or its mixture is 10:1-100:1;
(4) compound step (3) obtained is at 110 DEG C-220 DEG C, and preferably 120 DEG C-180 DEG C, more preferably thermal treatment 30-60 minute under the condition of 130-170 DEG C, obtains the lumber fibre material of modification and enhancing after being cooled to room temperature.
Described timber segment materials and polyethylene powders, the appropriate mass ratio of polypropylene powder or its mixture, make after heat treatment, the polyethylene of hot melt and/or polypropylene just can the surfaces of complete coated timber fragment substantially, if described amount of polymeric material is less, then can not cover the surface of timber fragment completely, make timber segment materials be easy to degraded in as roadbed material use procedure such as to rot, if and described amount of polymeric material is excessive, not then effective in cost, and make the performance of timber itself such as toughness and some strength be difficult to bring into play.
As mentioned before, in current building waste is recycled, waste and old wood in building waste is not utilized effectively, such as, comprise the wood type building waste of significant proportion in decoration garbage, all be not fully used, incinerated often, not only effectively do not utilize it to be worth, also cause Heavy environmental pollution.For this problem, the present inventor finds through research, by carrying out modification and enhancing to timber according to the method described above, and can particularly advantageously used as in the steady layer of water, basic unit etc. of road.Generally understanding is in the past that timber is easy to rotten, particularly in the environment having water to also exist, is difficult to be used in road pavements, is more difficult to be used in the steady layer of water.In the present invention, by carrying out modification and enhancement process to it, making it have enough water tolerance, even if it is used in the steady layer of water, basic unit etc. in urban road laying simultaneously, also can not cause due to the effect of light material modified aging.
Described polyethylene, polypropylene or its mixture are preferably from the plastic waste in rubbish.Preferably polyethylene, more preferably linear low density polyethylene (LLDPE).Known in the art, plastic waste (as various waste plastic bottle) mainly linear low density polyethylene (LLDPE) in rubbish such as building waste, it has, and intensity is high, good toughness, rigidity are strong, heat-resisting, cold-resistant, good chemical stability, also there is the performances such as good resisting environmental stress and cracking, tear-resistant intensity, and can acid-and base-resisting, organic solvent etc.The present inventor finds through further investigation, and material property required in these performances described and roadbed material is very identical, and therefore preferably use strengthens lumber fibre material from the polyethylene of the plastic waste in rubbish.The lumber fibre material obtained by the inventive method not only further enhancing the toughness of lumber fibre itself, additionally provides high strength, high rigidity, high heat-resisting, high cold-resistant, desired properties that high chemical stability is such.The plastic waste of the polyethylene material in building waste is ground into powder namely can be used in described method.
What form sharp contrast therewith is, all the time, even if recycle culled wood, also normally rotproofing is carried out to timber, but this needs to use sanitas, sanitas is the salt such as chromic salt, borate, cupric arsenate normally, if be used in road pavements, very serious environmental pollution can be caused, such as soil pollution.
In addition, in lumber fibre modifying process of the present invention, for surface physics and the chemical structure of timber, polyvinylpolypyrrolidone is filtered out as Interfacial compatibilization agent in the Interfacial compatibilization agent used from other field a large amount of, polyvinylpolypyrrolidone has the side base of polarity and hydrophobic main chain, can contact with polyethylene (or polypropylene) with timber respectively, play the compatibilization reducing interfacial tension, the use of this polymer bulking agents, avoid expanding material migration in use, be conducive to having given play to stable compatibilization effect, be conducive to the stability guaranteeing matrix material simultaneously.Polyvinylpolypyrrolidone is mixed with solution, and preferred aqueous solution uses, and method is easy, not with an organic solvent, and then also has the good feature of environmental protection.
The invention still further relates to the preparation method of above-mentioned road pavements, the method comprises the slag that produced by domestic garbage burning electricity generation by 1-10 % by weight and the obtained activated micro mist of tool of cigarette ash, 25-50 % by weight iron tailings, 45-70 % by weight is separated obtained earth material from building waste, mix with the exciting agent of 0.02-0.06 % by weight, be stirred well to evenly.
Preferably, said method comprising the steps of: the activated micro mist of tool that the slag produced 1-10 % by weight by domestic garbage burning electricity generation and cigarette ash obtain, 25-50 % by weight iron tailings, 45-70 % by weight is separated obtained earth material from building waste, with the exciting agent of 0.02-0.06 % by weight, and optionally 1-5 % by weight mixes from the admixture of the modification of building waste and the lumber fibre material of enhancing and optional 0.01-2 % by weight, its order by merging is as follows:
(1) the exciting agent mixing of the activated micro mist of tool, 25-50 % by weight iron tailings and 0.02-0.06 % by weight that the slag produced by domestic garbage burning electricity generation by 1-10 % by weight and cigarette ash obtain, is stirred well to evenly;
(2) mixture optionally step (1) obtained mixes from the admixture of the modification of building waste and the lumber fibre material of enhancing and 0.01-2 % by weight with optional 1-5 % by weight; With
(3) mixture that step (2) obtains is separated obtained earth material with 45-70 % by weight from building waste to mix, is stirred well to evenly.
The present inventor finds, feed in raw material while common with prior art and to compare with the method mixed, exciting agent more can excite the activity of micro mist, its reason is mainly, if low-down for ratio exciting agent is mixed with the very large earth material of ratio in initial mixing step, then easily wrapped up by earth material, thus make it be difficult to contact with micropowder material; In addition, the general granularity of iron tailings is comparatively thin, and particle diameter is mainly distributed within the scope of 0.3mm ~ 0.075mm, can mix with activate micro powder and exciting agent in the initial step.
In a preferred embodiment, the timber sorted out in building waste separation step process can as the raw material of the lumber fibre material of modification and enhancing, and the method being prepared the lumber fibre material of modification and enhancing by described timber comprises the following steps:
(1) be cut into short for the culled wood in building waste the segment materials that maximum diameter is 0.5-2cm;
(2) short segment materials of cutting is placed in stirred pot, add the aqueous solution of surface-modifying agent, stir evenly, the mass ratio of segment materials and surface-modifying agent is 200:1-500:1, described surface-modifying agent is polyvinylpolypyrrolidone, and in solution, the concentration of polyvinylpolypyrrolidone is 20-30 % by weight;
(3) in the segment materials after surface modification, polyethylene powders, polypropylene powder or its mixture is added, mix, make the surface attachment polyethylene powders of segment materials, polypropylene powder or its mixture, the mass ratio of described segment materials and polyethylene, polypropylene or its mixture is 10:1-100:1;
(4) compound step (3) obtained is at 110 DEG C-220 DEG C, and preferably 120 DEG C-180 DEG C, more preferably thermal treatment 30-60 minute under the condition of 130-170 DEG C, obtains the lumber fibre material of modification and enhancing after being cooled to room temperature.
Certainly, if those skilled in the art are it is to be appreciated that the amount of polyethylene powders that timber in building waste, plastic waste obtain can not meet the demand of batching, also optionally can obtain from other refuse process field.
In a further preferred embodiment, in road pavements of the present invention, 0.01-5 % by weight can also be comprised, the concrete admixture of preferred 0.05-2 % by weight.
Concrete admixture of the present invention preferably comprises or multipolymer by making following monomer (I) and monomer (II) copolymerization obtain:
(I)
Wherein R
1such as, for the alkyl of C1-C6, ethyl, R
2such as, for the alkoxyl group of C2-C6, oxyethyl group, n is the integer of 2-10; With
(II) α, beta-unsaturated carboxylic acid or its salt;
Wherein the weight ratio of monomer (I) and (II) is 50-95:5-50, and the weight-average molecular weight of described multipolymer is 500-2000.
In described structure, the existence repeating ethoxy unit further enhancing the concrete water-reducing property of making.
Most preferably, described α, beta-unsaturated carboxylic acid has following chemical structural formula:
Finding by replacing at phenyl ring contraposition F, the water-reducing property of multipolymer can be strengthened further, thus the described admixture being low to moderate 0.01 % by weight can be added just can realize required water-reducing property in road pavements.
Of the present invention this there is excellent water-reducing property admixture polymkeric substance or its analogue not yet have report.
Polymerization process can adopt the polymerization process of this area routine to carry out, such as mass polymerization, solution polymerization, emulsion polymerization or suspension polymerization.
The present inventor finds through research, by adding such admixture, can provide excellent water-reducing property, prevent the mobility of road pavements from reducing along with the time, be very beneficial for constructing in urban road laying, and make it possible to the use effectively avoiding cement, road intensity is high.
Embodiment
By following specific embodiment and comparative example, further describe the present invention, but embodiment only for illustration of, can not limit the scope of the invention.
In the present invention, properties test can be carried out with reference to following standard: 1, GB/T 1346 " cement normal consistency water consumption, time of coagulation, the stability method of inspection "; 2, GB/T 17671-1999 " Test method for strength of hydraulic cement mortar "; 3, cement water reducing agent quality standard and test method JGJ 56-84; 4, GB 8076-2008; 5, JTGE51-2009 highway stabilized with inorganic binder testing of materials code; With 6, the Ministry of Communications's " highway road surface construction technique normalizing " of issuing.
Embodiment 1
The road pavements of preparation 3 tons of weights, based on the total weight of this road pavements, it comprises the obtained activated micro mist of tool of about 8 % by weight slags produced by domestic garbage burning electricity generation and cigarette ash, about 29.95 % by weight iron tailings, about 62 % by weight are separated obtained earth material from building waste, and the exciting agent of about 0.05 % by weight.The activated micro mist of wherein said tool obtains by the slag of domestic garbage burning electricity generation generation and cigarette ash being pulverized in jaw crusher and shredder, grinding, and the specific surface area of the micro mist of acquisition is 2400m
2/ kg; Described earth material is the soil separated from building waste, the earth of mainly engineering construction generation; Described iron tailings is the crude tailings from golden ridge iron ore, and specific surface area is about 185m
2/ g, density is about 2.44g/cm
3, d50 particle diameter is about 41.50 μm; Exciting agent is the composition of bases exciting agent A and salt exciting agent B, and the weight ratio of exciting agent A and B is 5:1; Bases exciting agent A is the total weight 30 % by weight Ca (OH) based on bases exciting agent A
2, 10 % by weight NaOH, 30 % by weight Na
2cO
3with 30 % by weight Na
2siO
39H
2the mixture of O; Salt exciting agent B is total weight 30 % by weight Na based on salt exciting agent B
2sO
4, 25 % by weight CaSO
42H
2o, 15 % by weight CaCl
2with 30 % by weight Ca
2sO
4mixture.In described road pavements preparation process, first exciting agent is fully mixed with micro mist in agitator, then mix with earth material.According to standard Road Design specification, described material is carried out making as road base layer, test its 7d ultimate compression strength.Through measuring, its 7d ultimate compression strength is 3.6MPa, and meeting the 7d ultimate compression strength of motorway to basic unit is the requirement of 3 ~ 4MPa.
Comparative example 1
Prepare the road pavements of 3 tons of weights according to the schedule of operation identical with embodiment 1, the difference of itself and embodiment 1 is only that the specific surface area of the weight such as described micro mist use is about 500m
2the micro mist that building refuse concrete is pulverized, grinding obtains of/kg substitutes.According to standard Road Design specification, described material is carried out making as road base layer, test its 7d ultimate compression strength.According to the measuring method identical with embodiment 1, recording 7d ultimate compression strength is 1.8MPa, and not meeting the 7d ultimate compression strength of motorway to basic unit is the requirement of 3 ~ 4Mpa, does not also meet the requirement of common road to traffic base material.
Comparative example 2
Prepare the road pavements of 3 tons of weights according to the schedule of operation identical with embodiment 1, the difference of itself and embodiment 1 is only that the specific surface area that the micro mist obtained was pulverized, ground to the slag that domestic garbage burning electricity generation produces and cigarette ash is 900m
2/ kg.According to standard Road Design specification, described material is carried out making as road base layer, test its 7d ultimate compression strength.According to the measuring method identical with embodiment 1, recording 7d ultimate compression strength is 2.6MPa, and not meeting the 7d ultimate compression strength of motorway to basic unit is the requirement of 3 ~ 4Mpa, but meets common road such as Class I highway to the requirement of traffic base material.
Comparative example 3
Prepare the road pavements of 3 tons of weights according to the schedule of operation identical with embodiment 1, the difference of itself and embodiment 1 is only not use salt exciting agent B, and the bases exciting agent A of the weight such as its use substitutes.According to standard Road Design specification, described material is carried out making as road base layer, test its 7d ultimate compression strength.According to the measuring method identical with embodiment 1, recording 7d ultimate compression strength is 3.1MPa, and only meeting the 7d ultimate compression strength of motorway to basic unit is reluctantly the requirement of 3 ~ 4Mpa.
Embodiment 2
The preparation of the lumber fibre material of modification and enhancing
(1) by short for the culled wood in building waste be cut into maximum diameter be 0.5-2cm not wait segment materials;
(2) be placed in stirred pot by short segment materials of cutting, add the polyvinylpolypyrrolidone aqueous solution of 25 % by weight, stir with agitator, the mass ratio of segment materials and surface-modifying agent is 300:1;
(3) in the segment materials after surface modification, add polyethylene powders, fully mix, make it even, make the surface attachment polyethylene powders of segment materials, described segment materials and poly mass ratio are 80:1;
(4) compound step (3) obtained thermal treatment 45 minutes under the condition of 135 DEG C, obtains the lumber fibre material of modification and enhancing after being cooled to room temperature.
Embodiment 3
Prepare the road pavements of 3 tons of weights according to the schedule of operation identical with embodiment 1, the difference of itself and embodiment 1 is only the lumber fibre material of the modification that the embodiment 2 of 3 % by weight of the road pavements gross weight being incorporated as embodiment 1 on the basis of the road pavements of embodiment 1 is obtained and enhancing.According to standard Road Design specification, described material is carried out making as road base layer, test its 7d ultimate compression strength.According to the measuring method identical with embodiment 1, recording 7d ultimate compression strength is 3.75MPa, and meeting the 7d ultimate compression strength of motorway to basic unit is the requirement of 3 ~ 4Mpa, and the road pavements of strength ratio embodiment 1 improves 4.2%.
Embodiment 4: the preparation of admixture
The chemical structural formula of monomer (I) is:
Wherein R
1for ethyl, R
2oxyethyl group, n is 5, this monomer can by by polyoxyethylene glycol and ethylacrylic acid conveniently esterification process carry out esterification, then by esterification products and oxyethyl group chlorine conveniently eliminative reaction obtain, or can be directly purchased from Sigma-Aldrich company;
The chemical structural formula of monomer (II) is:
this monomer is commercially available from Solution on Chemical Reagents in Shanghai company;
Adopt emulsion polymerization, to 500mL with adding 80g monomer (I) and 10g monomer (II) and 200mL deionized water in the round-bottomed flask of mechanical stirring device, stir lower logical nitrogen, then 0.1g ammonium persulphate is added as initiator, be warming up to polymerization temperature, polymerization temperature is 80 DEG C, keeps reaction 4 hours, reclaiming polymerisate after terminating reaction, is about 1500 through measuring the weight-average molecular weight of gained multipolymer.
Embodiment 5:
Prepare the road pavements R ' of 3 tons of weights according to the schedule of operation identical with embodiment 1, the difference of itself and embodiment 1 is only to be incorporated as the obtained admixture of the embodiment 4 of 0.3 % by weight of this road pavements gross weight on the basis of the road pavements of embodiment 1.According to standard Road Design specification, described material is carried out making as road base layer, test water reducing ability and water reducer shrinkage ratio.
Comparative example 4:
The road pavements R of 3 tons of weights is prepared according to the schedule of operation identical with embodiment 1 ", the difference of itself and embodiment 1 is only to be incorporated as the commercially available TH-928 polycarboxylate high performance water-reducing agent of 0.3 % by weight of this road pavements gross weight on the basis of the road pavements of embodiment 1.TH-928 polycarboxylate high performance water-reducing agent be at present think the water reducer of better performances.According to standard Road Design specification, described material is carried out making as road base layer, test water reducing ability and water reducer shrinkage ratio.
Table 1: the performance comparison of different admixture
Compared with conventional water reducer, water reducer of the present invention makes water reducing ability improve 8%, and yield rate reduces by 21%, this is reflected in the very large road pavements of consumption, the consumption of water can be reduced, greatly improve the intensity of road pavements, by the enhancing of described water-reducing property, high-strength road pavements can be obtained, avoid the use of cement.Meanwhile, the life-span that the excellent properties of described water reducer can extend road pavements can reach more than one times, thus greatly extends the work-ing life of road.
Finally it should be noted that obviously above-described embodiment is only for example of the present invention is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (6)
1. a road pavements, based on the total weight of this road pavements, it comprises slag that 1-10 % by weight produces by domestic garbage burning electricity generation and the obtained activated micro mist of tool of cigarette ash, 25-50 % by weight iron tailings, 45-70 % by weight is separated obtained earth material from building waste, and the exciting agent of 0.02-0.06 % by weight;
The specific surface area of described micro mist is 1000-3000m
2/ kg;
SiO in described iron tailings
2content is 35.0-45.0 % by weight, Fe
2o
3content is 20.0-22.0%, Al
2o
3content is 13.5-16.5%, CaO content is 6.0 % by weight-10.0 % by weight, and content of MgO is 3.0-3.3 % by weight, and is mixed with the calcium hydroxide based on iron tailings total weight 1.0-5.0%.
2. road pavements according to claim 1, wherein this road pavements does not comprise cement, pitch or cement concrete.
3. road pavements according to claim 1 and 2, the activated micro mist of wherein said tool is pulverized by the slag that will be produced by domestic garbage burning electricity generation and cigarette ash, grinding obtains.
4. road pavements according to claim 1 and 2, wherein said earth material is the soil and great soil group impurity separated from building waste.
5. road pavements according to claim 1 and 2, wherein said exciting agent is compound bio solidifying agent, described compound bio solidifying agent be hard native enzyme, beta-glucosidase enzyme and Phosphoric acid esterase with (10 ~ 15): (1 ~ 2): the mixture of (2 ~ 3) weight ratio.
6. the preparation method of the road pavements according to any one of claim 1-5, the method comprises:
(1) the exciting agent mixing of the activated micro mist of tool, 25-50 % by weight iron tailings and 0.02-0.06 % by weight that the slag produced by domestic garbage burning electricity generation by 1-10 % by weight and cigarette ash obtain, is stirred well to evenly; With
(2) mixture that step (1) obtains is separated obtained earth material with 45-70 % by weight from building waste to mix, is stirred well to evenly.
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| CN104944860A (en) * | 2015-06-02 | 2015-09-30 | 江苏省交通规划设计院股份有限公司 | High-content iron tailings sand road base mixture |
| CN107445543A (en) * | 2017-08-03 | 2017-12-08 | 河北建筑工程学院 | A kind of iron tailings regeneration concrete and preparation method thereof |
| CN111763052A (en) * | 2019-04-02 | 2020-10-13 | 北京恒泰岩磊科技有限公司 | Green ecological high-weather-resistance high-water-permeability pavement material and preparation method thereof |
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| CN101717207A (en) * | 2009-11-04 | 2010-06-02 | 上海寰保渣业处置有限公司 | Solidification material prepared from incineration residue material as well as production method and application thereof |
| CN102180638A (en) * | 2011-01-28 | 2011-09-14 | 内蒙古科技大学 | Repairing material for concrete pavement in mining area |
| CN102976679A (en) * | 2012-12-04 | 2013-03-20 | 山东泰德新能源有限公司 | Concrete material for paving road surface and preparation method of concrete material |
| CN104119043A (en) * | 2014-07-24 | 2014-10-29 | 新奥生态建材有限公司 | Road paving material taking building waste as main material and preparation method of road paving material |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717207A (en) * | 2009-11-04 | 2010-06-02 | 上海寰保渣业处置有限公司 | Solidification material prepared from incineration residue material as well as production method and application thereof |
| CN102180638A (en) * | 2011-01-28 | 2011-09-14 | 内蒙古科技大学 | Repairing material for concrete pavement in mining area |
| CN102976679A (en) * | 2012-12-04 | 2013-03-20 | 山东泰德新能源有限公司 | Concrete material for paving road surface and preparation method of concrete material |
| CN104119043A (en) * | 2014-07-24 | 2014-10-29 | 新奥生态建材有限公司 | Road paving material taking building waste as main material and preparation method of road paving material |
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