CN104909638A - Composite mineral admixture for concrete - Google Patents

Composite mineral admixture for concrete Download PDF

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Publication number
CN104909638A
CN104909638A CN201510317855.1A CN201510317855A CN104909638A CN 104909638 A CN104909638 A CN 104909638A CN 201510317855 A CN201510317855 A CN 201510317855A CN 104909638 A CN104909638 A CN 104909638A
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CN
China
Prior art keywords
reinforcement
concrete
complex mineral
mineral blending
concrete complex
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510317855.1A
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Chinese (zh)
Inventor
孙志强
宋少民
刘娟红
丁福平
李世嵩
王林
卞立波
罗凯
刘媛
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Ningxia Shengyuan New Building Material Co Ltd
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Ningxia Shengyuan New Building Material Co Ltd
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Priority to CN201510317855.1A priority Critical patent/CN104909638A/en
Publication of CN104909638A publication Critical patent/CN104909638A/en
Pending legal-status Critical Current

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

Abstract

The invention discloses a composite mineral admixture for concrete. The composite mineral admixture comprises the following components in percentage by weight: 15-20% of cement clinker, 30-40% of mineral powder, 8-15% of silica fume, 20-30% of limestone powder and 15-25% of fly ash, wherein the limestone powder is obtained by processing mining debris. According to the composite mineral admixture disclosed by the invention, the gel material is added at a proportion of 20-40%, so that the economic benefits are remarkable while the production needs of high-performance concrete and high-strength concrete are met, and the economic and social benefits are also very high; by adopting the composite mineral admixture, the use of cement is reduced; and by mass utilization of industrial wastes such as mineral powder, limestone powder, fly ash and relatively low-quality silica fume, the waste of resources is reduced, and the sustainable development of the concrete industry is promoted.

Description

The reinforcement of concrete complex mineral blending material
Technical field:
The present invention relates to complex mineral blending material technical field, low in particular to a kind of cost of manufacture, adopt the reinforcement of concrete complex mineral blending material that the waste and old resources such as flyash, limestone powder (mining chip), more low-quality silicon ash are produced, the reinforcement of concrete complex mineral blending material provided by the invention can Concrete Structure weather resistance and splitting resistance.
Background technology:
Cement is one of pillar of the basic material industry of China, cement is used in concrete, reinforcing bar, concrete is the principal mode of China's building structure, China's concrete amount accounts for 60% of world's total amount, a large amount of carbonic acid gas can be discharged in a large amount of production processes of cement, cause the pollution of environment, and the coal that a large amount of need of production consumption of cement are a large amount of, water, electric power and mine resources etc., cause shortage of resources, concrete industry is caused to carry out sustainable development, and the main Energy Base of China is while the national rapid economic development of support, create a large amount of industrial flyash and mining chip, the solid waste such as silicon ash, cause environmental pollution and resources idle.
Summary of the invention:
In view of this, be necessary to provide a kind of the reinforcement of concrete complex mineral blending material, this application of the reinforcement of concrete complex mineral blending material in concrete decreases the consumption of cement, and improves concrete weather resistance and splitting resistance.
A kind of the reinforcement of concrete complex mineral blending material, comprise cement clinker, limestone powder, flyash, breeze and silicon ash, the weight percent that cement clinker, limestone powder, flyash, breeze and silicon ash accounts for the reinforcement of concrete complex mineral blending material gross weight is respectively: cement clinker is 15%-20%, breeze is 30%-40%, silicon ash is 8%-15%, and limestone powder is 20%-30%, and flyash is 15%-25%, wherein, limestone powder adopts mining chip to process.
Preferably, silicon ash is for containing SiO 2the more low-quality silicon ash of≤82%, breeze is ground by granulated blast-furnace slag and forms.
Preferably, the reinforcement of concrete complex mineral blending material is by cement clinker, breeze, silicon ash, limestone powder and flyash, by fragmentation, abrasive dust, mixes.
Preferably, the reinforcement of concrete complex mineral blending material preferably raw material weight per-cent be: cement clinker accounts for 20% of adulterant gross weight; Breeze accounts for 35% of adulterant gross weight; Silicon ash accounts for 8% of adulterant gross weight; Limestone powder accounts for 25% of adulterant gross weight; Flyash accounts for 20% of adulterant gross weight.
Preferably, the weight part of following chemical composition and chemical composition is comprised after the reinforcement of concrete complex mineral blending material fragmentation, grinding, mixing:
Preferably, the reinforcement of concrete complex mineral blending material adopts that physically activated technology carries out fragmentation, grinding, mixture manufacturing form.
Preferably, the specific surface area of the reinforcement of concrete complex mineral blending material is more than or equal to 450m 2/ kg, degree of mobilization ratio is more than or equal to 95%, and loss on ignition is less than or equal to 8.0%, and within 7 days, activity index is more than or equal to 55%, and within 28 days, activity index is more than or equal to 80%.
Preferably, the volume of the reinforcement of concrete complex mineral blending material accounts for less than 40% of the total gelling material of the reinforcement of concrete.
The present invention under the prerequisite of low water binder ratio, can mix gelling material with the ratio of 20%-40%, so economic benefit highly significant, realizes high performance concrete, the Production requirement of strong concrete simultaneously, and economic benefit and social benefit are also very high; Application of the present invention reduces cement consumption, can reduce the consumption causing sand, stone material and water, electricity and coal equal energy source because producing cement, reduces the discharge of the total carbon dioxide capacity caused because production cement simultaneously; The extensive application of the reinforcement of concrete complex mineral blending material in concrete, can improve concrete weather resistance and life-span, bring up to 70-100 from 30-50; Application of the present invention decreases distress in concrete, improves concrete resistant to chemical etching ability, Concrete Structure weather resistance, and decreases concrete rehabilitation expense, improves engineering utilization function.
Embodiment:
The reinforcement of concrete complex mineral blending material comprises cement clinker, limestone powder, flyash, breeze and silicon ash, the weight percent that cement clinker, limestone powder, flyash, breeze and silicon ash accounts for the reinforcement of concrete complex mineral blending material gross weight is respectively: cement clinker is 15%-20%, breeze is 30%-40%, silicon ash is 8%-15%, limestone powder is 20%-30%, flyash is 15%-25%, and wherein, limestone powder adopts mining chip to process.
In the present embodiment, silicon ash is for containing SiO 2the more low-quality silicon ash of≤82%, breeze is ground by granulated blast-furnace slag and forms.The reinforcement of concrete complex mineral blending material is by cement clinker, breeze, silicon ash, limestone powder and flyash, by fragmentation, abrasive dust, mixes.
The reinforcement of concrete complex mineral blending material preferably raw material weight per-cent is: cement clinker accounts for 20% of adulterant gross weight; Breeze accounts for 35% of adulterant gross weight; Silicon ash accounts for 8% of adulterant gross weight; Limestone powder accounts for 25% of adulterant gross weight; Flyash accounts for 20% of adulterant gross weight.
The weight part of following chemical composition and chemical composition is comprised after the fragmentation of the reinforcement of concrete complex mineral blending material, grinding, mixing:
The reinforcement of concrete complex mineral blending material adopts that physically activated technology carries out fragmentation, grinding, mixture manufacturing form.
The specific surface area of the reinforcement of concrete complex mineral blending material is more than or equal to 450m 2/ kg, degree of mobilization ratio is more than or equal to 95%, and loss on ignition is less than or equal to 8.0%, and within 7 days, activity index is more than or equal to 55%, and within 28 days, activity index is more than or equal to 80%.The volume of the reinforcement of concrete complex mineral blending material accounts for less than 40% of the total gelling material of the reinforcement of concrete.
The present invention is according to the situation of Yinchuan of Ningxia Province regional industry waste resource and the new concept of new admixture and new results, object simultaneously in order to reach economy is attempted the lower flyash of use cost, Wingdale chip (mining chip), low-quality silicon ash etc. and is come alternative cost higher removal mineral fine and silicon ash, determines to form new concrete complex mineral blending material by Wingdale chip, flyash, slag, low-quality silicon ash, a small amount of cement clinker.
The reinforcement of concrete complex mineral blending material volume provided by the invention is within gelling material 40%, and the concrete mix prepared is not emanated, not good, the little loss of slump of bleeding, water-retentivity and cohesiveness; And little on concrete strength impact, the requirement of strength grade of concrete can be met.
The endurance performance of concrete mixing the reinforcement of concrete complex mineral blending material is studied, concrete Anti-Chloride Ion Penetration, anti-carbonation properties, anticorrosion behavior and sulfuric-resisting erosion performance under determining different addition quantity and proportioning respectively.Result shows: volume of the present invention accounts for less than 40% of total gelling material, and water-cement ratio is less than 3.0mm lower than the concrete 28d carbonation depth of 0.43, chloride permeability coefficient average out to 500 × 10 -14m 2/ s and sulphate-corrosion resistance can be good; Under salt fog curing condition, reinforcing steel corrosion rate is less.
Use flat tests research NEW TYPE OF COMPOSITE mineral admixture volume to concrete bracing performance impact, dull and stereotyped resistance to cleavage reaches I grade.
The present invention under the prerequisite of low water binder ratio, can mix gelling material with the ratio of 20%-40%, so economic benefit highly significant, realizes high performance concrete, the Production requirement of strong concrete simultaneously, and economic benefit and social benefit are also very high; Application of the present invention reduces cement consumption, can reduce the consumption causing sand, stone material and water, electricity and coal equal energy source because producing cement, reduces the discharge of the total carbon dioxide capacity caused because production cement simultaneously; The extensive application of the reinforcement of concrete complex mineral blending material in concrete, can improve concrete weather resistance and life-span, bring up to 70-100 from 30-50; Application of the present invention decreases distress in concrete, improves concrete resistant to chemical etching ability, Concrete Structure weather resistance, and decreases concrete rehabilitation expense, improves engineering utilization function.

Claims (8)

1. a reinforcement of concrete complex mineral blending material, it is characterized in that: the reinforcement of concrete complex mineral blending material comprises cement clinker, limestone powder, flyash, breeze and silicon ash, the weight percent that cement clinker, limestone powder, flyash, breeze and silicon ash accounts for the reinforcement of concrete complex mineral blending material gross weight is respectively: cement clinker is 15%-20%, breeze is 30%-40%, silicon ash is 8%-15%, limestone powder is 20%-30%, flyash is 15%-25%, wherein, limestone powder adopts mining chip to process.
2. the reinforcement of concrete complex mineral blending material as claimed in claim 1, is characterized in that: silicon ash is for containing SiO 2the low-quality silicon ash of≤82%, breeze is ground by granulated blast-furnace slag and forms.
3. the reinforcement of concrete complex mineral blending material as claimed in claim 1, is characterized in that: the reinforcement of concrete complex mineral blending material is by cement clinker, breeze, silicon ash, limestone powder and flyash, by fragmentation, grinding, mixes.
4. the reinforcement of concrete complex mineral blending material as claimed in claim 1, is characterized in that: the reinforcement of concrete complex mineral blending material preferably raw material weight per-cent is: cement clinker accounts for 15% of adulterant gross weight; Breeze accounts for 35% of adulterant gross weight; Silicon ash accounts for 10% of adulterant gross weight; Limestone powder accounts for 20% of adulterant gross weight; Flyash accounts for 20% of adulterant gross weight.
5. the reinforcement of concrete complex mineral blending material as claimed in claim 3, is characterized in that: the reinforcement of concrete complex mineral blending material passes through fragmentation, grinding, is mixed with the weight part comprising following chemical composition and chemical composition after forming:
6. the reinforcement of concrete complex mineral blending material as claimed in claim 3, is characterized in that: the reinforcement of concrete complex mineral blending material adopts that physically activated technology carries out fragmentation, grinding, mixture manufacturing form.
7. the reinforcement of concrete complex mineral blending material as claimed in claim 1, is characterized in that: the specific surface area of the reinforcement of concrete complex mineral blending material is more than or equal to 450m 2/ kg, degree of mobilization ratio is more than or equal to 95%, and loss on ignition is less than or equal to 8.0%, and within 7 days, activity index is more than or equal to 55%, and within 28 days, activity index is more than or equal to 80%.
8. the reinforcement of concrete complex mineral blending material as claimed in claim 1, is characterized in that: the volume of the reinforcement of concrete complex mineral blending material accounts for less than 40% of the total gelling material of the reinforcement of concrete.
CN201510317855.1A 2015-06-11 2015-06-11 Composite mineral admixture for concrete Pending CN104909638A (en)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105503059A (en) * 2015-12-11 2016-04-20 宁夏盛远新型建材有限责任公司 High performance concrete
CN105819721A (en) * 2016-04-05 2016-08-03 中国建筑科学研究院 Concrete rheological preservative as well as preparation method and application thereof
CN105948643A (en) * 2016-04-29 2016-09-21 山东众森节能材料有限公司 Stone flour concrete composite admixture and preparation method thereof
CN105965697A (en) * 2016-04-29 2016-09-28 山东众森节能材料有限公司 High performance concrete integrated production system and method
CN106007432A (en) * 2016-05-17 2016-10-12 华南理工大学 Mineral admixture based on limestone powder-stone ballast and application of mineral admixture
CN107382277A (en) * 2017-08-16 2017-11-24 江西省建筑材料工业科学研究设计院 A kind of superfine composite modified agstone of concrete microdilatancy
CN107572841A (en) * 2017-09-15 2018-01-12 北京建筑大学 A kind of low-carbon binder materials and the method for preparing concrete
CN108249805A (en) * 2017-12-13 2018-07-06 镇江建科建设科技有限公司 A kind of preparation method of mineral admixture and a kind of self-compacting concrete
CN108483969A (en) * 2018-03-08 2018-09-04 新疆研科节能科技有限公司 Granular concrete admixture and its prilling process
CN109553365A (en) * 2019-01-29 2019-04-02 临沂博泰国际贸易有限公司 A kind of inorganic coagulation material and preparation method thereof

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KR100908675B1 (en) * 2008-04-17 2009-07-22 (주)대덕레미콘 Concrete composition for revealing high early strength
CN103043980A (en) * 2012-12-20 2013-04-17 郑州工大建材有限公司 Mechanized construction plastering mortar and preparation method thereof
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105503059A (en) * 2015-12-11 2016-04-20 宁夏盛远新型建材有限责任公司 High performance concrete
CN105819721A (en) * 2016-04-05 2016-08-03 中国建筑科学研究院 Concrete rheological preservative as well as preparation method and application thereof
CN105819721B (en) * 2016-04-05 2018-02-13 中国建筑科学研究院 Concrete rheological preservative and its preparation method and application
CN105948643A (en) * 2016-04-29 2016-09-21 山东众森节能材料有限公司 Stone flour concrete composite admixture and preparation method thereof
CN105965697A (en) * 2016-04-29 2016-09-28 山东众森节能材料有限公司 High performance concrete integrated production system and method
CN105965697B (en) * 2016-04-29 2018-07-06 山东众森节能材料有限公司 A kind of high performance concrete integrated production system and method
CN106007432A (en) * 2016-05-17 2016-10-12 华南理工大学 Mineral admixture based on limestone powder-stone ballast and application of mineral admixture
CN107382277A (en) * 2017-08-16 2017-11-24 江西省建筑材料工业科学研究设计院 A kind of superfine composite modified agstone of concrete microdilatancy
CN107572841A (en) * 2017-09-15 2018-01-12 北京建筑大学 A kind of low-carbon binder materials and the method for preparing concrete
CN107572841B (en) * 2017-09-15 2020-11-27 北京建筑大学 Low-carbon cementing material and method for preparing concrete
CN108249805A (en) * 2017-12-13 2018-07-06 镇江建科建设科技有限公司 A kind of preparation method of mineral admixture and a kind of self-compacting concrete
CN108483969A (en) * 2018-03-08 2018-09-04 新疆研科节能科技有限公司 Granular concrete admixture and its prilling process
CN109553365A (en) * 2019-01-29 2019-04-02 临沂博泰国际贸易有限公司 A kind of inorganic coagulation material and preparation method thereof

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Application publication date: 20150916