CN103159449A - Heat-resistant concrete prepared by blast furnace dry slag - Google Patents
Heat-resistant concrete prepared by blast furnace dry slag Download PDFInfo
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- CN103159449A CN103159449A CN201110425398XA CN201110425398A CN103159449A CN 103159449 A CN103159449 A CN 103159449A CN 201110425398X A CN201110425398X A CN 201110425398XA CN 201110425398 A CN201110425398 A CN 201110425398A CN 103159449 A CN103159449 A CN 103159449A
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- blast furnace
- slag
- heat
- dry slag
- resistant concrete
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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 the field of heat-resistant concrete production, in particular to a heat-resistant concrete prepared by blast furnace dry slag. The heat-resistant concrete prepared by blast furnace dry slag is characterized by taking slag powder and bauxite as binding materials, choosing the blast furnace dry slag with different particle diameters as thick aggregates and thin aggregates, taking an anhydrous metasilicic acid solution as a binding agent, and all component ingredients comprise, by weight, 30% to 50% of the blast furnace dry slag thick aggregates with a grain size of 5 millimeters to 10 millimeters, 25% to 35% of the blast furnace dry slag thin aggregates with a grain size 0 to 5 millimeters, 10% to 25% of slag powder and 5% to 20% of bauxite, and sum of the components is 100%. The anhydrous metasilicic acid solution accounts for 10% to 15% of the component sum. Compared with the prior art, the heat-resistant concrete prepared by the blast furnace dry slag has the advantages that binding materials adopts slag powder and bauxite powder, existing metallurgy waste residue resources are fully utilized, sources of the heat-resistant concrete raw materials are enriched, cost of the heat-resistant concrete is reduced, the problem that dry slag is hard to utilize is solved, and novel method of utilizing dry slag is opened.
Description
Technical field
The present invention relates to the heat resistance concrete production field, particularly a kind of heat resistance concrete that utilizes the heavy blast furnace slag preparation.
Background technology
Slag powders is the gelling material with hydraulic characteristic of the shrend of melt blast-furnace slag process, levigate formation, and at present, slag powders is extensively utilized in the portland cement concrete industry, how to use as concrete mineral admixture.Studies show that in a large number, alkali-metal oxyhydroxide, vitriol, silicate, carbonate etc. are the hydraulically active of activated slag preferably, is suitable as the exciting agent of slag system.
Heavy blast furnace slag is that the hot melt slag naturally cooling that blast furnace produces when ironmaking forms, CaO, SiO in main chemical compositions
2Account for more than 95% of total mass with MgO content sum, major ingredient has aluminium square column (gehlenite, 2CaOAl2O
3SiO
2), lime feldspar (CaOAl
2O
32SiO
2), Dicalcium Phosphate (Feed Grade) (2CaOSiO
2) and monocalcium silicate (CaOSiO
2) etc.
Natural rock after traditional heat resistance concrete adopts ordinary Portland cement, Portland blastfurnaceslag cement etc. for gelling material, employing fragmentation more is aggregate.Publication number is that the CN102060489A patent has been described a kind of heat resistance concrete with preparations such as Portland blastfurnaceslag cement, natural basalt, blast-furnace slag, flyash, and the weight proportion of its composition is as follows: Portland blastfurnaceslag cement 405-487Kg; Black Warrior stone 1041-1430Kg; Granulated blast-furnace slag 810-887Kg; Flyash 45-65Kg; Water reducer 7-9Kg; Water 150-190Kg, this heat resistance concrete have reached the design requirements of 500 ℃ of heat resisting temperatures, strength grade C40 heat resistance concrete.
Publication number CN101712542A patent has been described a kind of take cement, blast furnace slag as gelling material, the heat resistance concrete take the iron ore country rock as aggregate, and its thermal stability is 700 ℃, the line velocity of variation is less than 1%.
Publication number CN1962527A patent has been described take acid-resistant powder and flyash as gelling material, quartz sand and quartzite are fine aggregate and the coarse aggregate of heat resistance concrete, take water glass and Sodium Silicofluoride as wedding agent and solidifying agent prepared a kind of antiseptic acidproof heat-proof concrete.This heat resistance concrete resistance toheat is strong, and intensity is high, long service life.
Summary of the invention
The object of the present invention is to provide a kind of heat resistance concrete that utilizes the heavy blast furnace slag preparation, this heat resistance concrete normal temperature curing strength increases fast, works long hours under 500 ℃, and its loss of strength rate is less, the line velocity of variation is less.
The present invention realizes by the following technical solutions:
A kind of heat resistance concrete that utilizes heavy blast furnace slag preparation take slag powders and bauxitic clay as gelling material, selects the heavy blast furnace slag of different-grain diameter as coarse aggregate and fine aggregate, and take anhydrous sodium metasilicate solution as wedding agent, its each constitutive material weight percent is:
Heavy blast furnace slag coarse aggregate size 5mm-10mm 30%-50%,
Heavy blast furnace slag fine aggregate particle diameter 0mm-5mm 25%-35%,
The slag powders specific surface area is 410-450m
2/ kg 10%-25%,
Bauxitic clay main component Al
2O
360%～70%, Al/Si 〉=12 particle diameters≤0.088mm 5%-20%, the said components sum is 100%;
Anhydrous sodium metasilicate solution accounts for the 10%-15% of said components sum, and its mass percentage concentration is 22%-30%.
Compared with prior art, the invention has the beneficial effects as follows: gelling material adopts slag powders and bauxitic clay powder, do not use cement, aggregate adopts heavy blast furnace slag, take full advantage of on the one hand existing metallurgical slag resource, enrich the source of heat resistance concrete raw material, reduced the cost of producing heat resistance concrete; On the other hand, solved the difficult difficult problem of utilizing of dry slag, for new way has been opened up in the utilization of dry slag.
Embodiment
The present invention will be further described below in conjunction with embodiment.
In following embodiment, at first heavy blast furnace slag is carried out fragmentation and screening, choose particle diameter 0mm-5mm heavy blast furnace slag as the fine aggregate of heat resistance concrete; Choose particle diameter 5mm-10mm dry slag as the coarse aggregate of heat resistance concrete.
Then take by weight percentage slag powders 10%-25%, bauxitic clay powder 5%-20% carries out mix and blend, after mixing again heavy blast furnace slag fine aggregate 25%-35%, heavy blast furnace slag coarse aggregate 30%-50%, again fully stir, add again the anhydrous sodium metasilicate solution of above-mentioned total mass 10%-15%, the mass percentage concentration of this anhydrous sodium metasilicate solution is 22%-30%, and abundant mixing and stirring can be used with after after-pouring jolt ramming, maintenance 3-5 days.Main component Al in bauxitic clay wherein
2O
360%～70%, Al/Si 〉=12.
Embodiment 1
A kind of heat resistance concrete that utilizes the heavy blast furnace slag preparation, its each constitutive material weight percent is:
Heavy blast furnace slag fine aggregate particle diameter 0mm-5mm 35%,
Heavy blast furnace slag coarse aggregate size 5mm-10mm 35%,
Bauxitic clay particle diameter≤0.088mm 10%,
Slag powders S 75 rank specific surface area 410m
2/ kg 20%,
Anhydrous sodium metasilicate solution (mass percentage concentration is 30%) 12%
Above-mentioned materials is stirred, vibratory compaction, normal temperature maintenance 48h, and then 110 ℃ of oven dry 24h.
This heat resistance concrete test result is: after 110 ℃ * 24h, folding strength is 3.9MPa, and ultimate compression strength is 62.9MPa; After 500 ℃ * 5h burnt, folding strength was 3.6MPa, and ultimate compression strength is 53.9Mpa, and loss rate of flexural strength is 7.7%, and the ultimate compression strength rate of loss is 14.3%, and after burning, the line velocity of variation is-0.1%.
Embodiment 2
A kind of heat resistance concrete that utilizes the heavy blast furnace slag preparation, its each constitutive material weight percent is:
Heavy blast furnace slag fine aggregate particle diameter 0mm-5mm 35%,
Heavy blast furnace slag coarse aggregate size 5mm-10mm 35%,
Bauxitic clay particle diameter≤0.088mm 10%,
Slag powders S 75 rank specific surface areas are 450m
2/ kg 20%,
Anhydrous sodium metasilicate solution (mass percentage concentration is 26%) 12%
Above-mentioned materials is stirred, vibratory compaction, normal temperature maintenance 48h, and then 110 ℃ of oven dry 24h.
After this heat resistance concrete test result was 110 ℃ * 24h, folding strength was 3.7MPa, and ultimate compression strength is 61.1MPa; After 500 ℃ * 5h burns, folding strength is 3.2MPa, and ultimate compression strength is 54.5Mpa, and loss rate of flexural strength is 13.5%, and the ultimate compression strength rate of loss is 10.8%, and the line velocity of variation is-0.1%.
Embodiment 3
A kind of heat resistance concrete that utilizes the heavy blast furnace slag preparation, its each constitutive material weight percent is:
Heavy blast furnace slag fine aggregate particle diameter 0mm-5mm 35%
Heavy blast furnace slag coarse aggregate size 5mm-10mm 35%
Bauxitic clay particle diameter≤0.088mm 15%
Slag powders S 75 rank specific surface areas are 410m
2/ kg 15%
Anhydrous sodium metasilicate solution (mass percentage concentration is 22%) 15%
Above-mentioned materials is stirred, vibratory compaction, normal temperature maintenance 48h, and then 110 ℃ of oven dry 24h.
After this heat resistance concrete test result was 110 ℃ * 24h, folding strength was 3.4MPa, and ultimate compression strength is 48.5MPa; After 500 ℃ * 5h burns, folding strength is 3.1MPa, and ultimate compression strength is 41.2Mpa, and loss rate of flexural strength is 8.8%, and the ultimate compression strength rate of loss is 15.1%, and the line velocity of variation is-0.4%.
Embodiment 4
A kind of heat resistance concrete that utilizes the heavy blast furnace slag preparation, its each constitutive material weight percent is:
Heavy blast furnace slag fine aggregate particle diameter 0mm-5mm 30%,
Heavy blast furnace slag coarse aggregate size 5mm-10mm 40%,
Bauxitic clay particle diameter≤0.088mm 20%,
Slag powders S 75 rank specific surface areas are 410m
2/ kg 10%,
Anhydrous sodium metasilicate solution (mass percentage concentration is 26%) 12%,
Above-mentioned materials is stirred, vibratory compaction, normal temperature maintenance 48h, and then 110 ℃ of oven dry 24h.
After this heat resistance concrete test result was 110 ℃ * 24h, folding strength was 4.3MPa, and ultimate compression strength is 37.0MPa; After 500 ℃ * 5h burns, folding strength is 3.2MPa, and ultimate compression strength is 31.3Mpa, and loss rate of flexural strength is 25.6%, and the ultimate compression strength rate of loss is 15.4%, and the line velocity of variation is-0.2%.
Embodiment 5
A kind of heat resistance concrete that utilizes the heavy blast furnace slag preparation, its each constitutive material weight percent is:
Heavy blast furnace slag fine aggregate particle diameter 0mm-5mm 30%
Heavy blast furnace slag coarse aggregate size 5mm-10mm 40%
Bauxitic clay particle diameter≤0.088mm 10%
Slag powders S 75 rank specific surface areas are 450m
2/ kg 20%
Anhydrous sodium metasilicate solution (mass percentage concentration is 26%) 12%
Above-mentioned materials is stirred, vibratory compaction, normal temperature maintenance 48h, and then 110 ℃ of oven dry 24h.
After this heat resistance concrete test result was 110 ℃ * 24h, folding strength was 3.8MPa, and ultimate compression strength is 60.2MPa; After 500 ℃ * 5h burns, folding strength is 3.6MPa, and ultimate compression strength is 51.4Mpa, and loss rate of flexural strength is 5.1%, and the ultimate compression strength rate of loss is 14.6%, and the line velocity of variation is-0.1%.
In above-described embodiment, described heavy blast furnace slag fine aggregate particle diameter 0mm-5mm refers to that granularity is greater than 0, less than or equal to the fine aggregate of 5mm; Described heavy blast furnace slag coarse aggregate size 5mm-10mm refers to that granularity is greater than 5mm, less than or equal to the coarse aggregate of 10mm.
Heat resistance concrete of the present invention is applied to heat-resisting base, can satisfy its normal temperature curing strength and increase soon, work long hours under 500 ℃, and ultimate compression strength 〉=40Mpa, ultimate compression strength rate of loss≤40%, line velocity of variation are ± 1% technical requirements.
Claims (1)
1. heat resistance concrete that utilizes heavy blast furnace slag preparation, it is characterized in that, take slag powders and bauxitic clay as gelling material, select the heavy blast furnace slag of different-grain diameter as coarse aggregate and fine aggregate, take anhydrous sodium metasilicate solution as wedding agent, its each constitutive material weight percent is:
Heavy blast furnace slag coarse aggregate size 5mm-10mm 30%-50%,
Heavy blast furnace slag fine aggregate particle diameter 0mm-5mm 25%-35%,
The slag powders specific surface area is 410-450m
2/ kg 10%-25%,
Bauxitic clay main component Al
2O
360%～70%, Al/Si 〉=12 particle diameters≤0.088mm 5%-20%, the said components sum is 100%;
Anhydrous sodium metasilicate solution accounts for the 10%-15% of said components sum, and its mass percentage concentration is 22%-30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110425398XA CN103159449A (en) | 2011-12-17 | 2011-12-17 | Heat-resistant concrete prepared by blast furnace dry slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110425398XA CN103159449A (en) | 2011-12-17 | 2011-12-17 | Heat-resistant concrete prepared by blast furnace dry slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103159449A true CN103159449A (en) | 2013-06-19 |
Family
ID=48583023
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|---|---|---|---|
| CN201110425398XA Pending CN103159449A (en) | 2011-12-17 | 2011-12-17 | Heat-resistant concrete prepared by blast furnace dry slag |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103910531A (en) * | 2014-03-26 | 2014-07-09 | 赵云 | Refractory concrete |
| CN104529323A (en) * | 2014-12-09 | 2015-04-22 | 包头冶金建筑研究院 | Full-weight slag aggregate heat-resistant concrete prepared by using ordinary silicate cement |
| CN106116310A (en) * | 2016-06-29 | 2016-11-16 | 中国三冶集团有限公司 | A kind of containing slag powders with the thermal insulation mortar of polypropylene fibre |
| CN106145816A (en) * | 2016-06-29 | 2016-11-23 | 中国三冶集团有限公司 | A kind of high water proof fire retardant thermal insulation mortar containing slag powders |
| CN106587689A (en) * | 2016-12-15 | 2017-04-26 | 攀枝花环业冶金渣开发有限责任公司 | Heat-resistant concrete manufacturing method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040385A (en) * | 2009-10-24 | 2011-05-04 | 阮克胜 | Composite alkali-resistant refractory brick of pulverized fuel ash |
-
2011
- 2011-12-17 CN CN201110425398XA patent/CN103159449A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040385A (en) * | 2009-10-24 | 2011-05-04 | 阮克胜 | Composite alkali-resistant refractory brick of pulverized fuel ash |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103910531A (en) * | 2014-03-26 | 2014-07-09 | 赵云 | Refractory concrete |
| CN104529323A (en) * | 2014-12-09 | 2015-04-22 | 包头冶金建筑研究院 | Full-weight slag aggregate heat-resistant concrete prepared by using ordinary silicate cement |
| CN106116310A (en) * | 2016-06-29 | 2016-11-16 | 中国三冶集团有限公司 | A kind of containing slag powders with the thermal insulation mortar of polypropylene fibre |
| CN106145816A (en) * | 2016-06-29 | 2016-11-23 | 中国三冶集团有限公司 | A kind of high water proof fire retardant thermal insulation mortar containing slag powders |
| CN106587689A (en) * | 2016-12-15 | 2017-04-26 | 攀枝花环业冶金渣开发有限责任公司 | Heat-resistant concrete manufacturing method |
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Application publication date: 20130619 |