CN105036582A - Application of tailing scraps in concrete for partially replacing natural sand and binding materials - Google Patents
Application of tailing scraps in concrete for partially replacing natural sand and binding materials Download PDFInfo
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- CN105036582A CN105036582A CN201510435209.5A CN201510435209A CN105036582A CN 105036582 A CN105036582 A CN 105036582A CN 201510435209 A CN201510435209 A CN 201510435209A CN 105036582 A CN105036582 A CN 105036582A
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- concrete
- mine tailing
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- tailing
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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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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses application of tailing scraps in concrete for partially replacing natural sand and binding materials. According to the application, the tailing scraps and superfine sand are adopted, the fineness modulus of the tailing scraps before mixing is determined to be 3.2-3.6, the fineness modulus of the superfine sand before mixing is determined to be 1.0-1.4, and the mixed sand fineness modulus obtained after the tailing scraps and the superfine sand are mixed at the proportion of 70%-50% is 2.3-2.6. According to the application, natural resources can be saved, the ecological environment can be protected, and the production cost of concrete can be obviously reduced.
Description
Technical field
The present invention relates to a kind of mine tailing aggregate chips Some substitute natural sand and the application of gelling material in concrete.
Background technology
Along with the increasing of engineering construction and environment protection in the urgent need to; natural sand resource has received limit and has adopted or prohibit the protection of adopting; available natural sand resource wretched insufficiency, but infrastructural project constantly increases again, finds suitable natural sand substitute very necessary.
China just starts the experimental study of washing mine tailing using stone chips instead of sand in phase early 1990s, and research finds washing mine tailing aggregate chips both a large amount of waste water resources, and its discarded slurry produced causes secondary pollution to water body environment again.And research finds that although washing mine tailing using stone chips instead of sand concrete intensity increases, but workability decreases, major cause is because aggregate chips is after washing, and a large amount of fine particles has also rinsed out thereupon, make the grating of sand there occurs change, easily cause concrete to occur excreting water phenomenon; Secondly, cause the fluctuation of the concrete slump owing to washing rear aggregate chips water ratio instability, bring difficulty to concrete quality control.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of mine tailing aggregate chips Some substitute natural sand and the application of gelling material in concrete, and it not only can be saved natural resources and preserve the ecological environment, and can significantly reduce concrete production cost.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of mine tailing aggregate chips Some substitute natural sand and the application of gelling material in concrete, it is characterized in that, it adopts mine tailing aggregate chips and ultra fine sand, determine that the fineness modulus mixing front mine tailing aggregate chips is 3.2-3.6, ultra fine sand fineness modulus is 1.0-1.4, and mine tailing aggregate chips and ultra fine sand are at 2.3-2.6 in the mixed mixed sand fineness modulus of 70%-50% ratio.
Preferably, adulterate in described every side's concrete the polycarboxylic admixture of 1.1%-1.4%.
Preferably, containing stone flour in described mine tailing aggregate chips.
Positive progressive effect of the present invention is: it is feasible that mine tailing chips concrete realizes commercialization; commerical ready-mixed concrete is produced for Some substitute natural sand and gelling material with mine tailing aggregate chips; not only can save natural resources and preserve the ecological environment; and can significantly reduce concrete production cost, save the wealth of society.The present invention not only can reduce mine tailing aggregate chips to the occupying of soil, save natural resources, reduce operation, saving water resource, minimizing power consumption, preserve the ecological environment; and can significantly reduce concrete production cost; save the wealth of society, promote the development of Concrete Industry comprehensive utilization of resources.
Embodiment
Provide present pre-ferred embodiments below, to describe technical scheme of the present invention in detail.
The present invention adopts mine tailing aggregate chips and ultra fine sand, and determine that the fineness modulus mixing front mine tailing aggregate chips is 3.2-3.6, ultra fine sand fineness modulus is 1.0-1.4, and mine tailing aggregate chips and ultra fine sand are at 2.3-2.6 in the mixed mixed sand fineness modulus of 70%-50% ratio.
Adulterate in every side's concrete the polycarboxylic admixture of 1.1%-1.4%, its concrete water-reducing ratio is at 25%-30%, and it is better with mine tailing chips concrete adaptability, concrete 1 hour Slump Time losing of Large, in 30mm, solves the shortcoming that mine tailing chips concrete workability is poor, water requirement is large, Slump Time losing of Large is large.
From the cubic compressive strength test-results (table 1) of each strength grade mine tailing chips concrete, can design requirements be reached with the commerical ready-mixed concrete of mine tailing aggregate chips preparation C20 ~ C40 strength grade, and by production actual specific, natural sand 28d ultimate compression strength is all greater than to same strength grade mine tailing chips concrete 28d ultimate compression strength.
Table 1
With the natural sand concrete of technical requirements, cost analysis being carried out with label to the C20-C40 mine tailing chips concrete used through dropping into entity, having analyzed and referring to following table 2:
Table 2
From the cost-saving about 30 yuan/m in upper table analysis C20-C40 mine tailing chips concrete side more every than natural sand concrete
3, its economic benefit is objective.
Containing more stone flour in mine tailing aggregate chips, find that stone flour has certain reactive behavior by research, can react with cement-hydrate lentamente, generate the hydrated product with some strength, fill concrete hole, improve concrete pore texture, replacement part flyash that can be suitable according to the percentage composition of stone flour in mine tailing aggregate chips, stone flour can improve the workability of fresh concrete and ensure sclerosis rear concrete mechanical property, endurance quality.
The present invention directly applies mine tailing aggregate chips can save operation, economize on electricity, reduces energy consumption; Saving water resource, avoid secondary pollution of water, not only can save natural resources and preserve the ecological environment, and can significantly reduce concrete production cost.The mechanical property of mine tailing aggregate chips Some substitute natural sand and gelling material commerical ready-mixed concrete can meet " Code for design of concrete structures " requirement, has excellent anti-permeability performance, can ensure the safety requirements of building structure.
Above-described specific embodiment; the technical problem of solution of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. a mine tailing aggregate chips Some substitute natural sand and the application of gelling material in concrete, it is characterized in that, it adopts mine tailing aggregate chips and ultra fine sand, determine that the fineness modulus mixing front mine tailing aggregate chips is 3.2-3.6, ultra fine sand fineness modulus is 1.0-1.4, and mine tailing aggregate chips and ultra fine sand are at 2.3-2.6 in the mixed mixed sand fineness modulus of 70%-50% ratio.
2. mine tailing aggregate chips Some substitute natural sand as claimed in claim 1 and the application of gelling material in concrete, is characterized in that, the polycarboxylic admixture of the 1.1%-1.4% that adulterates in described every side's concrete.
3. mine tailing aggregate chips Some substitute natural sand as claimed in claim 1 and the application of gelling material in concrete, is characterized in that, containing stone flour in described mine tailing aggregate chips.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510435209.5A CN105036582B (en) | 2015-07-22 | 2015-07-22 | Mine tailing aggregate chips part substitutes the application of natural sand and binder materials in concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510435209.5A CN105036582B (en) | 2015-07-22 | 2015-07-22 | Mine tailing aggregate chips part substitutes the application of natural sand and binder materials in concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105036582A true CN105036582A (en) | 2015-11-11 |
| CN105036582B CN105036582B (en) | 2017-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510435209.5A Active CN105036582B (en) | 2015-07-22 | 2015-07-22 | Mine tailing aggregate chips part substitutes the application of natural sand and binder materials in concrete |
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| CN (1) | CN105036582B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645853A (en) * | 2016-01-14 | 2016-06-08 | 南通铁跃建材科技有限公司 | Application of tailing machine-made sand winnowing powder in premixed concrete |
| CN108484023A (en) * | 2018-01-18 | 2018-09-04 | 上海市建筑科学研究院 | Large dosage picks up miberal powder end method for preparing mortar |
| CN114105558A (en) * | 2021-11-22 | 2022-03-01 | 上海建工建材科技集团股份有限公司 | Slow-setting concrete and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671146A (en) * | 2009-09-24 | 2010-03-17 | 天津港保税区航保商品砼供应有限公司 | Iron tailing concrete |
| 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 |
-
2015
- 2015-07-22 CN CN201510435209.5A patent/CN105036582B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101671146A (en) * | 2009-09-24 | 2010-03-17 | 天津港保税区航保商品砼供应有限公司 | Iron tailing concrete |
| 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 |
Non-Patent Citations (1)
| Title |
|---|
| 田景松等: "北京地区铁尾矿砂在水泥混凝土中的资源化利用技术研究", 《建筑装饰材料世界》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645853A (en) * | 2016-01-14 | 2016-06-08 | 南通铁跃建材科技有限公司 | Application of tailing machine-made sand winnowing powder in premixed concrete |
| CN108484023A (en) * | 2018-01-18 | 2018-09-04 | 上海市建筑科学研究院 | Large dosage picks up miberal powder end method for preparing mortar |
| CN114105558A (en) * | 2021-11-22 | 2022-03-01 | 上海建工建材科技集团股份有限公司 | Slow-setting concrete and preparation method thereof |
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| Publication number | Publication date |
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| CN105036582B (en) | 2017-08-18 |
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