CN104743975A - Iron tailing super-fine sand concrete - Google Patents
Iron tailing super-fine sand concrete Download PDFInfo
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- CN104743975A CN104743975A CN201510101749.XA CN201510101749A CN104743975A CN 104743975 A CN104743975 A CN 104743975A CN 201510101749 A CN201510101749 A CN 201510101749A CN 104743975 A CN104743975 A CN 104743975A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
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Abstract
The invention relates to iron tailing super-fine sand concrete and discloses concrete prepared by taking mixed sands consisting of iron tailing super-fine sand and machine-made sands as a fine aggregate, and belongs to the technical field of iron tailing sand building materials. The concrete is prepared from the following components in percentage by mass: 8-15% of cement, 21-34% of iron tailing mixed sands, 44-49% of gravels, 5-7% of an admixture, 7.2-8.3% of water and 1.6-2.2% of an efficient pumping agent for concrete based on the sum of mass of the cement and the admixture. The water-binder ratio of the prepared concrete is 0.75-0.36 and the strength grade is C20-C50. The iron tailing super-fine sand concrete provided by the invention can reduce the environmental pollution caused by iron tailings, reduce the exploitation quantity and exploitation energy consumption of natural sands and lower the production cost of the concrete, and has obvious economic and social benefits.
Description
Technical field
the invention belongs to iron tailings sand building material technical field, be specifically related to a kind of iron tailings ultra fine sand and Machine-made Sand forms the concrete of mixed sand as fine aggregate preparation.
Background technology
since reform and opening-up, China has become construction market maximum in the world, and sand using amount rises year by year, long-term exploitation, causes natural sand resource progressively exhausted, finds new sand resource, reduce Cost of Concrete very urgent, thus must find suitable to sand material.China's iron ore disseminated grain size is thin, iron tailings chemical composition and the composition required for structure material very close, this is carry out mine tailing to create condition for the research making material of construction.Building sand or aggregate etc. are the most basic material of construction, are not strict with chemical composition, only require that material has certain hardness and granularity, and mine tailing quality meets building sand standard, quantity is many, without the need to reprocessing, can make up the shortcoming that natural sand is with poor quality but high price.On the other hand, utilize mine tailing in a large number, the difficult problems such as tailings stack anxiety, environmental pollution can also be solved.The mine tailing of iron ore is after rotational flow sorting, and most of mine tailing fineness modulus all belongs to ultra fine sand scope, directly uses more difficult at present as building sand.The object of the invention is to develop this part iron tailings, iron tailings ultra fine sand and Machine-made Sand are formed mixed sand and replace natural sand fine aggregate to carry out production ready mixed concrete be feasible.
in recent years, country has implemented a series of preferential policies such as the deduction and exemption resource expenses of taxation in succession, guide and encourage society and business capital to drop into the exploitation project of the resources such as mine tailing, and actively support that enterprise carries out research of technique, undergo technological transformation, strengthen the technological innovation of comprehensive utilization of tailing, research and development modern technique, sophisticated equipment, advanced technologies, accelerate correlative study achievements conversion.Replace natural sand with mine tailing to have obvious social and economic benefits, be the technology research project that country encourages, will the inexorable trend of construction industry development be become.Many technology are had in iron tailings application aspect.Be used to prepare autoclave aerated concrete building block, foamed hollow brick, light wall material and roadbed filling etc. as material of construction major part.In iron tailing concrete disclosed in Chinese patent 101671146A, iron tailings is particle diameter is 5 ~ 25mm processing barren rocks, and for being replace rubble coarse aggregate in concrete, and the iron tailings ultra fine sand in the present invention replaces natural sand fine aggregate.
Summary of the invention
the object of the invention is to develop iron tailings ultra fine sand, iron tailings ultra fine sand and Machine-made Sand form mixed sand as fine aggregate preparation concrete, iron tailings superfine sand concrete provided by the invention can reduce the pollution of iron tailings to environment, reduce produced quantity and the exploitation energy consumption of natural sand, reduce concrete production cost, have obvious social and economic benefits.
the component of iron tailings superfine sand concrete provided by the present invention is made up of cement, iron tailings mixed sand, rubble, adulterant, the reinforcement of concrete efficient pumping aid and water; Cement 8% ~ 15% by mass percentage, iron tailings mixed sand 21% ~ 34%, rubble 44% ~ 49%, adulterant 5% ~ 7%, water 7.2% ~ 8.3%, the reinforcement of concrete efficient pumping aid is 1.6% ~ 2.2% of cement and adulterant quality sum.
iron tailings mixed sand is the mixed sand that iron tailings ultra fine sand and Machine-made Sand are combined into, and the fineness modulus of mixed sand is 2.3 ~ 3.0, mass content≤10.0% of stone flour in mixed sand; The fineness modulus of iron tailings ultra fine sand is 1.5 ~ 0.7, mass content≤15.0% of stone flour in iron tailings ultra fine sand; The fineness modulus of Machine-made Sand is 2.6 ~ 3.7, stone flour mass content≤5.0% in Machine-made Sand.In iron tailings mixed sand, iron tailings ultra fine sand is 20% ~ 40% of iron tailings mixed sand quality.
adulterant is flyash, the mixing of any one or both in GBFS.Prepare iron tailings superfine sand concrete water-cement ratio be 0.75 ~ 0.36, strength grade is C20 ~ C50, and namely the mixed ratio of iron tailings ultra fine sand in mixed sand and strength grade exist inversely prroportional relationship reduces along with strength grade increases mixed ratio.In iron tailings mixed sand, iron tailings ultra fine sand accounts for mixed sand to mix mass ratio is 20% ~ 40%, described in table specific as follows:
iron tailings sand and Machine-made Sand mixed ratio in mixed sand
the present invention has following technical characterstic:
(1) develop iron ore mine and not only reduce exploitation natural sand to the destruction of ecotope, and decrease the destruction of iron ore mine to environment itself, turn waste into wealth, realize resource secondary and utilize, meet Sustainable development completely, realize the fundamental state policy of recycling economy, there is significant social benefit.
(2) develop iron ore mine and greatly can also reduce Cost of Concrete, produce considerable economic benefit.
(3), by the tax policy of country to comprehensive utilization of resources, use waste mining rock, milltailings reach the enterprise of 30%, and can also enjoy the preferential policy exempting from value added tax, benefit is more obvious.
(4) Sustainable development, both can meet contemporary Man's Demands, did not endanger again the ability that future generations satisfy the demand.
Embodiment
embodiment 1-4:
table 1 has listed iron tailings superfine sand concrete feed components of the present invention and has accounted for folk prescription concrete proportion.
table 2 has listed iron tailings sand and Machine-made Sand in mixed sand of the present invention and has mixed mass ratio.
table 3 has listed iron ore tail superfine sand concrete serviceability of the present invention and ultimate compression strength.
table 1 iron tailings superfine sand concrete feed components accounts for folk prescription concrete proportion (kg/m
3
)
it is partially thin that domestic mine tailing has fineness mostly, granularity is uneven, and containing features such as a certain amount of stone flours, the use of mixed sand is in the shortcoming that technically can overcome CHARACTERISTICS OF TAILINGS SAND disproportionately graded, particularly adopting iron ore tailings and Machine-made Sand recombination energy change the partially thin defect of tailings particle size, make grating reasonable.CHARACTERISTICS OF TAILINGS SAND is with the compound use of Machine-made Sand simultaneously, also can reduce the content of stone powder in CHARACTERISTICS OF TAILINGS SAND.In mixed sand, the blending ratio of iron tailings and Machine-made Sand is not fixing, its change along with strength grade (gel material content) and changing, namely the mixed ratio of iron tailings in mixed sand and strength grade exist inversely prroportional relationship reduces along with strength grade increases mixed ratio.Can explain along with strength grade increases from concrete all grades granular system angle analysis, water cement ratio diminishes, gel material content strengthens, for reaching identical workability and suitable viscosity, in mixed sand grain composition interval, fine particle should suitably reduce, mixed sand fineness modulus becomes large, so should decrease containing the iron tailings ratio that fine particle is more.
in table 2 mixed sand, iron tailings sand and Machine-made Sand mix mass ratio
the usability test of iron tailings mixed sand concrete mix shows, as long as blending ratio is suitable for, the mixed sand that iron tailings and Machine-made Sand form can make the concrete of excellent working performance completely.Mechanical performance of concrete is mainly using the concrete crushing strength in each length of time under normal curing condition as inspection target.From each age strength rule of development, no matter C20 ~ C50 strength grade, mixed ratio and the concrete strength dependency of iron tailings are poor, though each age strength is variant, fluctuating range is little; As long as good its strength development rule of concrete of serviceability all meets normal concrete strength development disciplinarian request.
table 3 iron ore tail superfine sand concrete serviceability and ultimate compression strength
Claims (4)
1. an iron tailings superfine sand concrete, is characterized in that the component of described iron tailings superfine sand concrete is made up of cement, iron tailings mixed sand, rubble, adulterant, the reinforcement of concrete efficient pumping aid and water; Described cement 8% ~ 15% by mass percentage, described iron tailings mixed sand 21% ~ 34%, described rubble 44% ~ 49%, described adulterant 5% ~ 7%, described water 7.2% ~ 8.3%, described the reinforcement of concrete efficient pumping aid is 1.6% ~ 2.2% of described cement and described adulterant quality sum.
2. a kind of iron tailings superfine sand concrete according to claim 1, it is characterized in that described iron tailings mixed sand is the mixed sand that iron tailings ultra fine sand and Machine-made Sand are combined into, the fineness modulus of described mixed sand is 2.3 ~ 3.0, mass content≤10.0% of stone flour in described mixed sand; The fineness modulus of described iron tailings ultra fine sand is 1.5 ~ 0.7, mass content≤15.0% of stone flour in described iron tailings ultra fine sand; The fineness modulus of described Machine-made Sand is 2.6 ~ 3.7, stone flour mass content≤5.0% in described Machine-made Sand.
3. a kind of iron tailings superfine sand concrete according to claim 2, is characterized in that iron tailings ultra fine sand described in described iron tailings mixed sand is 20% ~ 40% of described iron tailings mixed sand quality.
4. a kind of iron tailings superfine sand concrete according to claim 1, is characterized in that described adulterant is the mixing of any one or both in flyash, GBFS.
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| CN201510101749.XA CN104743975A (en) | 2015-03-09 | 2015-03-09 | Iron tailing super-fine sand concrete |
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| CN201510101749.XA CN104743975A (en) | 2015-03-09 | 2015-03-09 | Iron tailing super-fine sand concrete |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236860A (en) * | 2015-09-11 | 2016-01-13 | 中国十七冶集团有限公司 | Iron tailings mixing sand concrete |
| CN105601206A (en) * | 2016-02-01 | 2016-05-25 | 中国十七冶集团有限公司 | Iron ore waste rock self-compaction concrete |
| CN105801050A (en) * | 2016-03-01 | 2016-07-27 | 中国十七冶集团有限公司 | Dual-layered iron tailing sand-based water permeable brick and preparation method thereof |
| CN106186876A (en) * | 2016-07-17 | 2016-12-07 | 临汾市华基新型建材有限公司 | A kind of concrete utilizing iron-contained industrial mine tailing to produce |
| CN106396540A (en) * | 2016-08-30 | 2017-02-15 | 廊坊荣盛混凝土有限公司 | Super-fine sand and tailing sand mixed concrete |
| CN107488017A (en) * | 2017-09-23 | 2017-12-19 | 江苏昶浩建材有限公司 | A kind of water-permeable brick |
| CN109053090A (en) * | 2018-10-10 | 2018-12-21 | 宁夏亿丰砼业有限公司 | A kind of superfine sand concrete |
| CN110698098A (en) * | 2019-09-25 | 2020-01-17 | 中建西部建设北方有限公司 | Corrosion-resistant iron tailing aggregate, corrosion-resistant concrete and preparation method thereof |
| CN112723817A (en) * | 2020-12-09 | 2021-04-30 | 华新水泥股份有限公司 | High-fluidity adjustable-setting ready-mixed grouting mortar and preparation method thereof |
| CN112777989A (en) * | 2021-01-07 | 2021-05-11 | 山东大学 | Environment-friendly road pervious concrete and preparation method and application thereof |
| CN113480262A (en) * | 2021-07-24 | 2021-10-08 | 陕西恒盛混凝土有限公司 | Machine-made sand concrete containing iron tailing sand and preparation method thereof |
| CN113563032A (en) * | 2021-08-25 | 2021-10-29 | 上海翟氏建材科技有限公司 | Dry-mixed mortar and processing method thereof |
| CN113943126A (en) * | 2020-07-15 | 2022-01-18 | 中冶建筑研究总院有限公司 | Artificial sand and concrete preparation method |
| CN115043616A (en) * | 2022-06-22 | 2022-09-13 | 武汉诚力商品砼有限公司 | Machine-made sand concrete containing iron tailing sand and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100731956B1 (en) * | 2005-12-28 | 2007-06-25 | 전북대학교산학협력단 | Manufacturing method of insulating building material |
| CN101560083A (en) * | 2009-06-02 | 2009-10-21 | 河北科技大学 | Dry powder mortar of mine tailings |
| CN101698582A (en) * | 2009-10-26 | 2010-04-28 | 中国十七冶建设有限公司 | Iron tailing premixed concrete and preparation method thereof |
| CN102992712A (en) * | 2012-11-16 | 2013-03-27 | 鞍钢集团矿业公司 | Method for preparing light thermal insulating panel by utilizing iron tailings |
| CN103274643A (en) * | 2013-05-20 | 2013-09-04 | 山东华联矿业股份有限公司 | Large-dosage iron tailing high-performance concrete and production technology thereof |
| CN103359982A (en) * | 2012-03-26 | 2013-10-23 | 中国矿业大学(北京) | Sprayed concrete material prepared by using iron tailings |
| CN104261709A (en) * | 2014-08-26 | 2015-01-07 | 山东建泽混凝土有限公司 | Method utilizing tailing sand to carry out sand gradation improvement |
-
2015
- 2015-03-09 CN CN201510101749.XA patent/CN104743975A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100731956B1 (en) * | 2005-12-28 | 2007-06-25 | 전북대학교산학협력단 | Manufacturing method of insulating building material |
| CN101560083A (en) * | 2009-06-02 | 2009-10-21 | 河北科技大学 | Dry powder mortar of mine tailings |
| CN101698582A (en) * | 2009-10-26 | 2010-04-28 | 中国十七冶建设有限公司 | Iron tailing premixed concrete and preparation method thereof |
| CN103359982A (en) * | 2012-03-26 | 2013-10-23 | 中国矿业大学(北京) | Sprayed concrete material prepared by using iron tailings |
| CN102992712A (en) * | 2012-11-16 | 2013-03-27 | 鞍钢集团矿业公司 | Method for preparing light thermal insulating panel by utilizing iron tailings |
| CN103274643A (en) * | 2013-05-20 | 2013-09-04 | 山东华联矿业股份有限公司 | Large-dosage iron tailing high-performance concrete and production technology thereof |
| CN104261709A (en) * | 2014-08-26 | 2015-01-07 | 山东建泽混凝土有限公司 | Method utilizing tailing sand to carry out sand gradation improvement |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105236860A (en) * | 2015-09-11 | 2016-01-13 | 中国十七冶集团有限公司 | Iron tailings mixing sand concrete |
| CN105601206A (en) * | 2016-02-01 | 2016-05-25 | 中国十七冶集团有限公司 | Iron ore waste rock self-compaction concrete |
| CN105801050A (en) * | 2016-03-01 | 2016-07-27 | 中国十七冶集团有限公司 | Dual-layered iron tailing sand-based water permeable brick and preparation method thereof |
| CN106186876A (en) * | 2016-07-17 | 2016-12-07 | 临汾市华基新型建材有限公司 | A kind of concrete utilizing iron-contained industrial mine tailing to produce |
| CN106396540A (en) * | 2016-08-30 | 2017-02-15 | 廊坊荣盛混凝土有限公司 | Super-fine sand and tailing sand mixed concrete |
| CN107488017A (en) * | 2017-09-23 | 2017-12-19 | 江苏昶浩建材有限公司 | A kind of water-permeable brick |
| CN109053090A (en) * | 2018-10-10 | 2018-12-21 | 宁夏亿丰砼业有限公司 | A kind of superfine sand concrete |
| CN110698098A (en) * | 2019-09-25 | 2020-01-17 | 中建西部建设北方有限公司 | Corrosion-resistant iron tailing aggregate, corrosion-resistant concrete and preparation method thereof |
| CN113943126A (en) * | 2020-07-15 | 2022-01-18 | 中冶建筑研究总院有限公司 | Artificial sand and concrete preparation method |
| CN112723817A (en) * | 2020-12-09 | 2021-04-30 | 华新水泥股份有限公司 | High-fluidity adjustable-setting ready-mixed grouting mortar and preparation method thereof |
| CN112723817B (en) * | 2020-12-09 | 2022-08-02 | 华新水泥股份有限公司 | High-fluidity adjustable-setting ready-mixed grouting mortar and preparation method thereof |
| CN112777989A (en) * | 2021-01-07 | 2021-05-11 | 山东大学 | Environment-friendly road pervious concrete and preparation method and application thereof |
| CN113480262A (en) * | 2021-07-24 | 2021-10-08 | 陕西恒盛混凝土有限公司 | Machine-made sand concrete containing iron tailing sand and preparation method thereof |
| CN113563032A (en) * | 2021-08-25 | 2021-10-29 | 上海翟氏建材科技有限公司 | Dry-mixed mortar and processing method thereof |
| CN115043616A (en) * | 2022-06-22 | 2022-09-13 | 武汉诚力商品砼有限公司 | Machine-made sand concrete containing iron tailing sand and preparation method thereof |
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Application publication date: 20150701 |