CN102491718A - Concrete prepared from industrial solid waste materials - Google Patents
Concrete prepared from industrial solid waste materials Download PDFInfo
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- CN102491718A CN102491718A CN2011103794409A CN201110379440A CN102491718A CN 102491718 A CN102491718 A CN 102491718A CN 2011103794409 A CN2011103794409 A CN 2011103794409A CN 201110379440 A CN201110379440 A CN 201110379440A CN 102491718 A CN102491718 A CN 102491718A
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- concrete
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- waste materials
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- materials preparation
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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 concrete prepared from industrial solid waste materials. The concrete provided by the invention comprises above 30% of industrial solid waste materials and has unit weight of 2335 to 2372kg/m<3>. The concrete provided by the invention is characterized by comprising 8 to 16 wt% of cement PO42.5, 2 to 4 wt% of slag micro-powder, 2 to 4 wt% of fly ash, 0.4 to 0.8 wt% of steel slag micro-powder, 0.1 to 0.2 wt% of semi-hydrated desulfurized gypsum, 27 to 29 wt% of mining scraps, 3 to 9 wt% of yellow sand, 43 to 45 wt% of crushed stones, and the balance mixing water and an additive. The concrete prepared from industrial solid waste materials has low production cost, greatly saves resource materials, has good workability, pumpability, strength and durability, provides a novel approach for solid waste comprehensive utilization, and has obvious social, economic and environmental benefits.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of concrete that adopts the solid waste materials preparation of industry.
Background technology
Along with the fast development of China's economic construction, the demand of commerical ready-mixed concrete increases year by year.The commerical ready-mixed concrete compounding process generally all is to use a large amount of yellow ground now, so its resource is more and more deficienter.The characteristics one of yellow ground are that its particle shape is slick and sly, the 2nd, and its grain composition is continuous, thus the concrete of preparing with fineness modulus 2.2～2.8 yellow ground, but water-retentivity, cohesiveness pump-conveying property are all relatively good, welcome by unit in charge of construction.
But the annual dry season, the yellow ground hard transportation causes that the prices fluctuate much.And yellow ground is excavated more and more difficulty; Fineness modulus is more and more littler; Quality worse and worse; Commerical ready-mixed concrete with the preparation of such sand is used for engineering construction and causes quality problems such as cracking easily, and therefore seeking a kind of material that can substitute yellow ground or reduce the yellow ground consumption, to come concrete batching be very necessary.
According to the solid waste materials of industry such as [2008] No. 156 specified mining chips of file of national property tax,, can use the solid waste materials preparation of industry commerical ready-mixed concretes such as mining chip according to JGJ55 " design of common concrete proportioning rules " standard.Problem is how to make that pumpability is good, intensity and resisting chloride ion penetration erosion performance are good, satisfies the commerical ready-mixed concrete of the policy requirements of exempting the corporation tax product that government announces simultaneously.
Utilize the solid waste materials preparation of industry commerical ready-mixed concretes such as mining chip, can economizing on resources property material, meet the national low-carbon environment-friendly strategy of sustainable development.The mine tailing chip, the one, the many shape difference of particle water caltrop, the 2nd, its grain composition is poor; The commerical ready-mixed concrete of all preparing with such sand; Water requirement is big, but poor water retention property, the poor pump-conveying property of cohesiveness are poor, the construction and management level is required high; Strict to the concrete placement curing requirements, not doing a good job causes that easily concrete separates, difficulty is watered and smash construction, surperficial dehydration problems of crack.Therefore, how many ratio concrete batchings with the alternative yellow ground of mine tailing chip are crucial.
Generally speaking, calculate by 50 kilograms of yellow ground consumptions of every side's concrete seven, mine tailing chip accounting 10～30%, yellow ground accounting 90～70% is prepared workability and superior in quality concrete easily.But the concrete that makes so still needs a large amount of yellow ground, can't satisfy the requirement that enterprise should have premium properties can reduce cost again for the concrete of being prepared.
Summary of the invention
The objective of the invention is to the existing concrete technical development market requirement, a kind of method of a large amount of use mining chip concrete batchings is provided, open up and enrich the comprehensive Utilization Ways of solid waste.
For realizing the foregoing invention purpose, the technical scheme that the present invention adopts is following:
The concrete that adopts the solid waste materials preparation of industry provided by the present invention, concrete density 2335～2372kg/m
3, its composition and proportioning are: silicate cement or ordinary Portland cement 8wt%～16wt%, slag micropowder 2wt%～4wt%; Flyash 2wt%～4wt%, slag micro powder 0.4wt%～0.8wt%, half water desulfurated plaster 0.1wt%～0.2wt%;, mining chip 27wt%～29wt%, yellow ground 3wt%～9wt%; Rubble 43wt%～45wt% and poly carboxylic acid admixture 0.15～0.25%, surplus are mixing water.
Said silicate cement or ordinary Portland cement comprise that strength grade is 42.5 and above cement.
Its specific surface area of said slag micro powder is greater than 420m
2/ kg.
Said mining chip fineness modulus is 3.0～3.5.
Said yellow ground fineness modulus is 1.8～2.3.
Said ballast grain sizes is 5～25mm.
The solid waste materials of the industry that the present invention adopted is the solid waste materials of [2008] No. 156 specified industry of file of national property tax.
The present invention is according to JGJ55 " design of common concrete proportioning rules " and GB50204 " concrete structure engineering construction quality acceptance specification " standard; Use the solid waste materials of industry such as mining chip, flyash, superfine steel slag micropowder, desulfurated plaster; Carry out mix Design; Tests such as the basic serviceability of concrete, endurance quality have finally made industrial solid waste materials accounting and have reached more than the 30wt% concrete density 2335～2372kg/m
3, and concrete pumpability is good, intensity and resisting chloride ion penetration erosion performance best possible merchandise concrete.
The present invention adopts big volume mine tailing chip and a small amount of yellow ground formulated in combination commerical ready-mixed concrete; On the one hand practiced thrift the resource material in a large number, reduced the concrete production cost, the workability of concrete that has guaranteed again on the other hand to be prepared and superior in quality; The concrete of the C25～C50 strength grade of preparation; Possess good workability, pumpability, intensity and weather resistance, also reach the tax reduction and exemption requirement, make enterprise exempt the product value added tax; Have tangible society, economy and environmental benefit, open up and enriched the comprehensive Utilization Ways of solid waste simultaneously.
Embodiment
Below in conjunction with embodiment the present invention is done further in detail, intactly explains:
Embodiment 1
The concrete of the solid waste materials preparation of employing industry of present embodiment, the weight percent that it is formed and each is formed is following:
Above-mentioned each weight percent sum of forming is 100%.
Its concrete process for preparation is following: at first configuration concrete such as cement, flyash, the modification breeze that mixes superfine steel slag micropowder and half water desulfurated plaster, yellow ground, mining chip, rubble, admixture are carried out Performance Detection with various starting material by standard; The starting material of inspection and acceptance are sent into corresponding feed bin; With proportioning input production automatic control system after the verification; Feeding sequence according to coarse aggregate-mining chip-yellow ground-gelling material (cement, flyash, modification breeze)-mixing water-admixture feeds intake successively; Stirred for 40～50 seconds; Control slump 120～160mm; If slump can not meet the demands, then through increasing admixture or gelling material or a small amount of mixing water is adjusted.
Test to adopting the solid waste materials concrete batchings of industry such as mining chip according to GB/T 50080 " normal concrete mix method for testing performance ", GB/T 50081 " normal concrete mechanical test method " and GB/T 50082 " Standard for test methods of longterm performance and durability of ordinary concrete ".
28 days intensity of concrete of actual preparation reaches design strength 115～123%, and intensity reached design strength 123～130% in 60 days.
Embodiment 2
The concrete of the solid waste materials preparation of employing industry of present embodiment, the weight percent that it is formed and each is formed is following:
Above-mentioned each weight percent sum of forming is 100%.
Its concrete process for preparation is following: at first configuration concrete such as cement, flyash, the modification breeze that mixes superfine steel slag micropowder and half water desulfurated plaster, yellow ground, mining chip, rubble, admixture are carried out Performance Detection with various starting material by standard; The starting material of inspection and acceptance are sent into corresponding feed bin; Adjustment optimization of concrete mix proportion input production automatic control system; Feeding sequence according to coarse aggregate-mining chip-yellow ground-gelling material (cement, flyash, modification breeze)-mixing water-admixture feeds intake successively; Stirred for 30～40 seconds; Control slump 120～160mm; If slump can not meet the demands, then through increasing admixture or gelling material or a small amount of mixing water is adjusted.
28 days intensity of concrete of actual preparation reaches design strength 116～122%, and intensity reached design strength 122～126% in 60 days, recorded relative dynamic elastic modulus 99% after 50 quick-freeze methods, and displacement flux is 1136～1218.
The foregoing description is interpreted as only being used to the present invention is described and is not used in restriction protection scope of the present invention.After the content of having read the present invention's record, those skilled in the art can do various changes or modification to the present invention, and these equivalences change and modify and fall into claim of the present invention institute restricted portion equally.
Claims (6)
1. one kind is adopted the industry concrete of waste materials preparation admittedly, concrete density 2335～2372kg/m
3, it is characterized in that its composition and proportioning are: silicate cement or ordinary Portland cement 8wt%～16wt%; Slag micropowder 2wt%～4wt%, flyash 2wt%～4wt%, slag micro powder 0.4wt%～0.8wt%; Half water desulfurated plaster 0.1wt%～0.2wt%, mining chip 27wt%～29wt%, yellow ground 3wt%～9wt%; Rubble 43wt%～45wt%, poly carboxylic acid admixture 0.15～0.25%, surplus is a mixing water.
2. the concrete that adopts the solid waste materials preparation of industry according to claim 1 is characterized in that, said silicate cement or ordinary Portland cement comprise that strength grade is 42.5 and above cement.
3. the concrete that adopts the solid waste materials preparation of industry according to claim 1 is characterized in that its specific surface area of said slag micro powder is greater than 420m
2/ kg.
4. the concrete that adopts the solid waste materials preparation of industry according to claim 1 is characterized in that said mining chip fineness modulus is 3.0～3.5.
5. the concrete that adopts the solid waste materials preparation of industry according to claim 1 is characterized in that said yellow ground fineness modulus is 1.8～2.3.
6. the concrete that adopts the solid waste materials preparation of industry according to claim 1 is characterized in that said ballast grain sizes is 5～25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103794409A CN102491718A (en) | 2011-11-24 | 2011-11-24 | Concrete prepared from industrial solid waste materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103794409A CN102491718A (en) | 2011-11-24 | 2011-11-24 | Concrete prepared from industrial solid waste materials |
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| Publication Number | Publication Date |
|---|---|
| CN102491718A true CN102491718A (en) | 2012-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103794409A Pending CN102491718A (en) | 2011-11-24 | 2011-11-24 | Concrete prepared from industrial solid waste materials |
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| CN (1) | CN102491718A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961413A (en) * | 2015-07-03 | 2015-10-07 | 济南大学 | Method for preparing road concrete from admixtures steel slag micro-powder, superfine slag powder and fly ash |
| CN104961412A (en) * | 2015-07-03 | 2015-10-07 | 济南大学 | Method for preparing cement-based composite cementing material from cement, steel slag micro-powder, superfine slag powder and fly ash |
| CN109437718A (en) * | 2018-11-20 | 2019-03-08 | 上海市建筑科学研究院 | A kind of C40 grades of large dosage solid waste concrete and preparation method thereof |
| CN109987903A (en) * | 2019-04-29 | 2019-07-09 | 中交二公局东萌工程有限公司 | A kind of blast-furnace cinder powder concrete applied on highway |
| CN111635206A (en) * | 2020-06-08 | 2020-09-08 | 张延年 | Impervious and carbonization-resistant solid waste concrete and preparation method thereof |
| CN112299804A (en) * | 2020-10-22 | 2021-02-02 | 北京建筑材料科学研究总院有限公司 | Industrial solid waste concrete for prefabricated part and preparation method and application thereof |
-
2011
- 2011-11-24 CN CN2011103794409A patent/CN102491718A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 赵芸平等: "《尾矿砂石混凝土施工性能的试验研究》", 《混凝土》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104961413A (en) * | 2015-07-03 | 2015-10-07 | 济南大学 | Method for preparing road concrete from admixtures steel slag micro-powder, superfine slag powder and fly ash |
| CN104961412A (en) * | 2015-07-03 | 2015-10-07 | 济南大学 | Method for preparing cement-based composite cementing material from cement, steel slag micro-powder, superfine slag powder and fly ash |
| CN109437718A (en) * | 2018-11-20 | 2019-03-08 | 上海市建筑科学研究院 | A kind of C40 grades of large dosage solid waste concrete and preparation method thereof |
| CN109437718B (en) * | 2018-11-20 | 2021-04-27 | 上海市建筑科学研究院 | C40-grade high-mixing-amount solid waste concrete and preparation method thereof |
| CN109987903A (en) * | 2019-04-29 | 2019-07-09 | 中交二公局东萌工程有限公司 | A kind of blast-furnace cinder powder concrete applied on highway |
| CN111635206A (en) * | 2020-06-08 | 2020-09-08 | 张延年 | Impervious and carbonization-resistant solid waste concrete and preparation method thereof |
| CN112299804A (en) * | 2020-10-22 | 2021-02-02 | 北京建筑材料科学研究总院有限公司 | Industrial solid waste concrete for prefabricated part and preparation method and application thereof |
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Application publication date: 20120613 |
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| RJ01 | Rejection of invention patent application after publication |