CN104402280A - Composite modified high titanium slag micropowder used for concrete and concrete preparation method - Google Patents
Composite modified high titanium slag micropowder used for concrete and concrete preparation method Download PDFInfo
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- CN104402280A CN104402280A CN201410572459.9A CN201410572459A CN104402280A CN 104402280 A CN104402280 A CN 104402280A CN 201410572459 A CN201410572459 A CN 201410572459A CN 104402280 A CN104402280 A CN 104402280A
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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 discloses composite modified high titanium slag micropowder used for concrete, and the composite modified high titanium slag micropowder is characterized by being prepared by mixing 50%-67% by weight of high titanium slag, 31%-50% by weight of circulating fluidized bed fire coal ash and 0%-8% by weight of metakaolin. The concrete is prepared by mixing the composite modified high titanium slag micropowder with cement, sand, stone, water and a water reducing agent by stirring, molding and curing. The composite modified high titanium slag micropowder can use a large amount of the industrial solid waste high titanium slag and the circulating fluidized bed fire coal ash; the concrete performance is better than that of single doped S75 grade granulated blast furnace slag powder concrete. By adopting the composite modified high titanium slag micropowder, industrial solid waste is extensively used, the preparation method is simple, cost is low, the composite modified high titanium slag micropowder is especially suitable for regions in which a large number of high titanium slag and circulating fluidized bed fire coal ash are simultaneously discharged, and has obvious economic benefits, broad market prospects and strong practicability.
Description
Technical field
The invention belongs to process and the application of solid waste in concrete of solid waste, relate to a kind of for the composite modified high-titanium slag micro mist in concrete and concrete preparation method thereof.
Background technology
During the blast-furnace smelting pig iron, the melts that to produce with silicate and silico-aluminate be main component, after quenching granulating, is granulated blast-furnace slag.Granulated blast-furnace slag is after drying, levigate to reaching specific surface area>=350m
2the indexs such as/kg, 7d activity index>=55%, 28d activity index>=75%, degree of mobilization ratio>=95%, are S75 grade slag powder (concrete with reference to GB/T 18046-2008 " GBFS in cement and concrete ").S75 grade slag powder activity is higher, degree of mobilization than large, cement clinker or cement can be substituted for cement mixture or concrete mineral admixture by large dosage.But, affect by the factor such as material performance, the place of production, China's some areas S75 grade slag powder output wretched insufficiency, especially even more serious with southwest situation.
Southwestern China area vanadium titano-magnetite aboundresources, during with vanadium titanium magnet ore deposit for the prepared using blast-furnace smelting pig iron, can produce granulated blast-furnace high-titanium slag.High-titanium slag composition, except containing except silicate and aluminosilicate, also contains in a large number with the TiO that uhligite form exists
2.Due to TiO
2content is high, and high-titanium slag grindability is poor, active low (activity index generally below 65%, even if grinding is to specific surface area>=400m
2/ kg, is also difficult to reach the requirement of S75 grade slag powder), be applied in cement concrete, volume reach 10% and above after significantly can reduce the intensity of cement concrete.At present, high-titanium slag does not obtain the utilization of mass efficient in material of construction always, and its volume of cargo in storage has reached more than 200,000,000 tons, and also continues to increase with the quantity discharged of 20,000,000 tons every year, not only occupy a large amount of land resources, also cause havoc to local environment.
Along with economic society high speed development, resource, the energy and environmental problem highlight.Produce a large amount of industrial residue in the Industrial processes such as smelting iron and steel, electrical production on the one hand, be difficult to process, pile up like a mountain; On the other hand, public and needed for civil engineering construction Building wood doses is large and subregion is in short supply, holds at high price.
Summary of the invention
Object of the present invention is intended to overcome deficiency of the prior art, provides a kind of for the composite modified high-titanium slag micro mist in concrete and concrete preparation method thereof; Thus providing one to turn waste into wealth, activity index and degree of mobilization ratio meet or exceed traditional S75 grade slag powder (concrete with reference to GB/T 18046-2008 " GBFS in cement and concrete "), the composite modified high-titanium slag micro mist be specially adapted in concrete.
Another object of the present invention is to provide a kind of concrete preparation method be used for by composite modified high-titanium slag micro mist in concrete.
Content of the present invention is: a kind of for the composite modified high-titanium slag micro mist in concrete, it is characterized in that: by weight percent be the high-titanium slag of 50% ~ 67%, the metakaolin of the circulating fluidized bed combustion coal lime-ash and 0% ~ 8% (being preferably 4% ~ 8%) of 31% ~ 50% mix form.
In content of the present invention: described high-titanium slag is the granulated blast-furnace high-titanium slag that v-bearing titanomagnetite smelting produces, and main chemical compositions and the weight percent of described high-titanium slag consist of TiO
215% ~ 25%, CaO 20 ~ 40%, MgO 6 ~ 10%, SiO
215 ~ 32%, Al
2o
310 ~ 17%.
In content of the present invention: described circulating fluidized bed combustion coal lime-ash is that circular fluid bed is coal fire discharged, main chemical compositions and the weight percent of described circulating fluidized bed combustion coal lime-ash consist of CaO8 ~ 21%, SO
35 ~ 20%, SiO
235 ~ 50%, Al
2o
310 ~ 25%.
In content of the present invention: described metakaolin can be bought from Inner Mongolia Chaopai Kaolin Co., Ltd., also can be other commercially available prod, main chemical compositions and the weight percent of described metakaolin consist of SiO
250 ~ 55%, Al
2o
340 ~ 45%, other minor component 3% ~ 5%.
In content of the present invention: described high-titanium slag, circulating fluidized bed combustion coal lime-ash and metakaolin mix or through combined grinding after separate grinding, the specific surface area>=350m of the mixture after grinding
2/ kg, 28d (namely 28 days) activity index>=75%, Mortar'S Flowability are than>=95%.
Another content of the present invention is: a kind of concrete preparation method, it is characterized in that step is:
A, batching: get each component raw material by the feed composition of sand 850 weight part, stone 1050 weight part, water 175 weight part, polycarboxylate water-reducer 1.4 weight part, gelling material 380 weight part and weight part composition; (every m
3the weight consumption proportioning of concrete raw material is preferably: sand 850kg, stone 1050kg, water 175kg, polycarboxylate water-reducer 1.4kg, gelling material 380kg).
The gelling material of described 380 weight parts to be mixed with composite modified high-titanium slag micro mist 76 ~ 152 weight part by P.O425 cement 228 ~ 304 weight part and forms (that is: gelling material to be mixed with composite modified high-titanium slag micro mist 76 ~ 152 weight part by P.O425 cement 228 ~ 304 weight part and forms, and the weight part sum of P.O425 cement and composite modified high-titanium slag micro mist is 380 weight parts);
B, mixing moulding maintenance: by the component raw material mix and blend of proportioning described in step a, shaping and maintenance to specifying the length of time (maintenance is to 3d, 28d or 60d etc.), namely obtainedly mix composite modified high-titanium slag micro mist concrete.
In another content of the present invention: described composite modified high-titanium slag micro mist by weight percent be the high-titanium slag of 50% ~ 67%, the metakaolin of the circulating fluidized bed combustion coal lime-ash and 0% ~ 8% (being preferably 4% ~ 8%) of 31% ~ 50% mix form.
In another content of the present invention:
Described high-titanium slag is the granulated blast-furnace high-titanium slag that v-bearing titanomagnetite smelting produces, and main chemical compositions and the weight percent of described high-titanium slag consist of TiO
215% ~ 25%, CaO 20 ~ 40%, MgO 6 ~ 10%, SiO
215 ~ 32%, Al
2o
310 ~ 17%;
Described circulating fluidized bed combustion coal lime-ash is that circular fluid bed is coal fire discharged, and main chemical compositions and the weight percent of described circulating fluidized bed combustion coal lime-ash consist of CaO 8 ~ 21%, SO
35 ~ 20%, SiO
235 ~ 50%, Al
2o
310 ~ 25%;
Described metakaolin can be buy from Inner Mongolia Chaopai Kaolin Co., Ltd., also can be other commercially available prod, and main chemical compositions and the weight percent of described metakaolin consist of SiO
250 ~ 55%, Al
2o
340 ~ 45%, other minor component 3% ~ 5%.
In another content of the present invention: described high-titanium slag, circulating fluidized bed combustion coal lime-ash and metakaolin mix or through combined grinding after separate grinding, the specific surface area>=350m of the mixture after grinding
2/ kg, 28d activity index>=75%, Mortar'S Flowability are than>=95%.
Other minor component described is generally Fe
2o
3, K
2o, Na
2one or more mixture in O.
Compared with prior art, the present invention has features and beneficial effect:
(1) the present invention is adopted, the circulating fluidized bed combustion coal lime-ash that main utilization is all industrial residue carrys out modification high-titanium slag, obtained composite modified high-titanium slag micro mist, with reference to GB GB/T18046-2008, its Mortar'S Flowability ratio >=95%, 28d activity index >=75%, and later strength increasing degree is large, product property is good;
(2) specific surface area>=350m of the composite modified high-titanium slag micro mist of the present invention
2/ kg, suitable with the specific surface area of general-purpose cement, effectively can reduce energy consumption needed for Titanium slag, circulating fluidized bed combustion coal lime-ash grinding, be conducive to reducing costs;
(3) the composite modified high-titanium slag micro mist of the present invention is used in concrete, the vitreum on the one hand in high-titanium slag, the active silica-alumina matter composition in circulating fluidized bed combustion coal lime-ash can with the free CaO in circulating fluidized bed combustion coal lime-ash and SO
3produce hydration reaction, thus mutually excite, reduce concrete pore rate, improve late strength of concrete and weather resistance; On the other hand, free CaO and SO in circulating fluidized bed combustion coal lime-ash
3aquation generates ettringite and dihydrate gypsum, produces microdilatancy effect, thus improve concrete shrinkage in concrete;
(4) the composite modified high-titanium slag micro mist of the present invention excites and microdilatancy effect mutually because of the activity had described in (3), therefore the P.O425 cement of weight percent 20% ~ 40% can be substituted for the preparation of concrete, thus realize the recycling that two kinds are difficult to utilize industrial residue high-titanium slag and circulating fluidized bed combustion coal lime-ash, both waste residue can have been made again to utilize creation economic benefit, can improve the ecological environment again;
(5), in the composite modified high-titanium slag micro mist of the present invention, mix a small amount of metakaolin and can optimize composite granule performance, circulating fluidized bed combustion coal lime-ash both had the hydraulicity, the SO in its component
3, f-CaO can excite again high-titanium slag active; High-titanium slag can increase degree of compactness in whole composite granule, has good diminishing effect, is conducive to concrete workability; After mixing a small amount of metakaolin, the growing amount of hydrated gel can be increased, improve intensity, and fully absorb f-CaO and SO
3, avoid the later stage to occur the bad problem of stability;
(6) the large industrial residue-high-titanium slag being difficult to utilize is used for building material field by the present invention, construction work raw material supply problem can not only be solved, and industrial residue can be fully utilized, reduce volume of cargo in storage, reduce and store up ground eco-environmental pressure, be conducive to comprehensive utilization of resources and environment protection; Adopt the present invention, utilize Industrial Solid Waste in a large number, preparation method is simple, and cost is low, and the region being particularly suitable for simultaneously discharging a large amount of high-titanium slag and circulating fluidized bed combustion coal lime-ash uses, and has significant economic benefit and wide market outlook, practical.
Embodiment
The invention will be further described for embodiment plan given below; but can not be interpreted as it is limiting the scope of the invention; some nonessential improvement and adjustment that person skilled in art makes the present invention according to the content of the invention described above, still belong to protection scope of the present invention.
Embodiment 1:
High-titanium slag, without composite modified, obtains high-titanium slag micro mist A, specific surface area>=350m
2/ kg, 28d activity index 62%, Mortar'S Flowability is than 118%.
Embodiment 2:
Titanium slag by 67 % by weight and 33 % by weight circulating fluidized bed combustion coal lime-ash obtain composite modified high-titanium slag micro mist B, specific surface area>=350m
2/ kg, 28d activity index 75%, Mortar'S Flowability is than 112%.
Embodiment 3:
Titanium slag by 60 % by weight and 40 % by weight circulating fluidized bed combustion coal lime-ash obtain composite modified high-titanium slag micro mist C, specific surface area>=350m
2/ kg, 28d activity index 77%, Mortar'S Flowability is than 104%.
Embodiment 4:
Titanium slag by 50 % by weight and 50 % by weight circulating fluidized bed combustion coal lime-ash obtain composite modified high-titanium slag micro mist D, specific surface area>=350m
2/ kg, 28d activity index 80%, Mortar'S Flowability is than 98%.
Embodiment 5:
Titanium slag by 64 % by weight, the circulating fluidized bed combustion coal lime-ash of 32 % by weight and the metakaolin of 4 % by weight obtain composite modified high-titanium slag micro mist E, specific surface area>=350m
2/ kg, 28d activity index 84%, Mortar'S Flowability is than 102%.
Embodiment 6:
Titanium slag by 61 % by weight, the circulating fluidized bed combustion coal lime-ash of 31 % by weight and the metakaolin of 8 % by weight obtain composite modified high-titanium slag micro mist F, specific surface area>=350m
2/ kg, 28d activity index 88%, degree of mobilization is than 100%.
Embodiment 7:
With commercially available S75 grade slag powder for contrast sample G, its specific surface area is 380m
2/ kg, 28d activity index reaches 83%, and degree of mobilization is than 120%.
Prepared by embodiment 1 ~ 7, composite modified high-titanium slag micro mist composition and performance are in table 1.
The composite modified high-titanium slag micro mist of table 1:
* represent and to measure according to standard GB/T/T18046-2008 " for GBFS in cement and concrete ".
Embodiment 8:
A kind of concrete preparation method, be utilize high-titanium slag micro mist A mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 304kg/m
3, high-titanium slag micro mist A 114kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 220mm of mix and blend, 3d ultimate compression strength is 19.0MPa, 28d ultimate compression strength be 40.4MPa, 60d ultimate compression strength is 45.7MPa.
Embodiment 9:
A kind of concrete preparation method, be utilize composite modified high-titanium slag micro mist B mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 266kg/m
3, composite modified high-titanium slag micro mist B 114kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 210mm of mix and blend, 3d ultimate compression strength is 26.3MPa, 28d ultimate compression strength be 46.3MPa, 60d ultimate compression strength is 54.6MPa.
Embodiment 10:
A kind of concrete preparation method, be utilize composite modified high-titanium slag micro mist C mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 266kg/m
3, composite modified high-titanium slag micro mist C 114kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 200mm of mix and blend, 3d ultimate compression strength is 26.5MPa, 28d ultimate compression strength be 46.5MPa, 60d ultimate compression strength is 55.9MPa.
Embodiment 11:
A kind of concrete preparation method, be utilize composite modified high-titanium slag micro mist D mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 266kg/m
3, composite modified high-titanium slag micro mist B 114kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 190mm of mix and blend, 3d ultimate compression strength is 26.7MPa, 28d ultimate compression strength be 46.7MPa, 60d ultimate compression strength is 58.0MPa.
Embodiment 12:
A kind of concrete preparation method, be utilize composite modified high-titanium slag micro mist E mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 266kg/m
3, composite modified high-titanium slag micro mist E 114kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 205mm of mix and blend, 3d ultimate compression strength is 27.3MPa, 28d ultimate compression strength be 51.2MPa, 60d ultimate compression strength is 61.3MPa.
Embodiment 13:
A kind of concrete preparation method, be utilize composite modified high-titanium slag micro mist F mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 266kg/m
3, composite modified high-titanium slag micro mist F 114kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 200mm of mix and blend, 3d ultimate compression strength is 26.9MPa, 28d ultimate compression strength be 54.7MPa, 60d ultimate compression strength is 62.7MPa.
Embodiment 14:
A kind of concrete preparation method is that its proportioning raw materials and design parameter are: cement (P.O 42.5) 266kg/m with commercially available S75 grade slag powder G for contrast mixing concrete
3, S75 grade slag powder G114kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 180mm of mix and blend, 3d ultimate compression strength is 17.6MPa, 28d ultimate compression strength be 40.7MPa, 60d ultimate compression strength is 51.4MPa.
Embodiment 15:
A kind of concrete preparation method, be utilize composite modified high-titanium slag micro mist B mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 304kg/m
3, composite modified high-titanium slag micro mist B 76kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 205mm of mix and blend, 3d ultimate compression strength is 29.9MPa, 28d ultimate compression strength be 49.4MPa, 60d ultimate compression strength is 63.8MPa.
Embodiment 16:
A kind of concrete preparation method, be utilize composite modified high-titanium slag micro mist B mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 228kg/m
3, composite modified high-titanium slag micro mist B 152kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 215mm of mix and blend, 3d ultimate compression strength is 26.8MPa, 28d ultimate compression strength be 42.8MPa, 60d ultimate compression strength is 52.2MPa.
Embodiment 17:
A kind of concrete preparation method, be utilize composite modified high-titanium slag micro mist F mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 304kg/m
3, composite modified high-titanium slag micro mist F 76kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 200mm of mix and blend, 3d ultimate compression strength is 27.3MPa, 28d ultimate compression strength be 52.5MPa, 60d ultimate compression strength is 58.6MPa.
Embodiment 18:
A kind of concrete preparation method, be utilize composite modified high-titanium slag micro mist F mixing concrete, its proportioning raw materials and design parameter are: cement (P.O 42.5) 228kg/m
3, composite modified high-titanium slag micro mist F 152kg/m
3, sand 850kg/m
3, stone 1050kg/m
3, water 175kg/m
3, water reducer 1.4kg/m
3, the shaping obtained fresh concrete slump 200mm of mix and blend, 3d ultimate compression strength is 28.0MPa, 28d ultimate compression strength be 53.0MPa, 60d ultimate compression strength is 60.4MPa.
Embodiment 8 ~ 18 utilize composite modified high-titanium slag micro mist prepare in concrete method raw material composition and proportioning in table 2.
(unit of feed composition is kg/m to table 2
3):
Note: G representative-commercial S75 grade slag powder.
The concrete performance that embodiment 8 ~ 18 utilizes composite modified high-titanium slag micro mist to prepare, in table 3.
Table 3 concrete performance:
Embodiment 19:
For the composite modified high-titanium slag micro mist in concrete, by weight percent be 50% high-titanium slag, 50% circulating fluidized bed combustion coal lime-ash mix form.
Embodiment 20:
For the composite modified high-titanium slag micro mist in concrete, by weight percent be the high-titanium slag of 67%, the circulating fluidized bed combustion coal lime-ash of 31% and 2% metakaolin mix form.
Embodiment 21:
For the composite modified high-titanium slag micro mist in concrete, by weight percent be the high-titanium slag of 58%, the circulating fluidized bed combustion coal lime-ash of 38% and 4% metakaolin mix form.
Embodiment 22 ~ 28:
For the composite modified high-titanium slag micro mist in concrete, by weight percent be the high-titanium slag of 50% ~ 67%, the metakaolin of the circulating fluidized bed combustion coal lime-ash and 0% ~ 8% (being preferably 4% ~ 8%) of 31% ~ 50% mix form; In each embodiment, the concrete weight percent consumption of each component raw material is in table 4;
Table 4:
Embodiment 29:
A kind of concrete preparation method, step is:
A, batching: get each component raw material by the feed composition of sand 850 weight part, stone 1050 weight part, water 175 weight part, polycarboxylate water-reducer 1.4 weight part, gelling material 380 weight part and weight part composition; (every m
3the weight consumption proportioning of concrete raw material is preferably: sand 850kg, stone 1050kg, water 175kg, polycarboxylate water-reducer 1.4kg, gelling material 380kg);
The gelling material of described 380 weight parts to be mixed with composite modified high-titanium slag micro mist 114 weight part by P.O425 cement 266 weight part and forms;
B, mixing moulding maintenance: by the component raw material mix and blend of proportioning described in step a, shaping and maintenance to specifying the length of time (maintenance is to 3d, 28d or 60d etc.), namely obtainedly mix composite modified high-titanium slag micro mist concrete.
Embodiment 30:
A kind of concrete preparation method, step is:
A, batching: get each component raw material by the feed composition of sand 850 weight part, stone 1050 weight part, water 175 weight part, polycarboxylate water-reducer 1.4 weight part, gelling material 380 weight part and weight part composition;
The gelling material of described 380 weight parts to be mixed with composite modified high-titanium slag micro mist 152 weight part by P.O425 cement 228 weight part and forms;
B, mixing moulding maintenance: by the component raw material mix and blend of proportioning described in step a, shaping and maintenance to specifying the length of time (maintenance is to 3d, 28d or 60d etc.), namely obtainedly mix composite modified high-titanium slag micro mist concrete.
Embodiment 31:
A kind of concrete preparation method, step is:
A, batching: get each component raw material by the feed composition of sand 850 weight part, stone 1050 weight part, water 175 weight part, polycarboxylate water-reducer 1.4 weight part, gelling material 380 weight part and weight part composition;
The gelling material of described 380 weight parts to be mixed with composite modified high-titanium slag micro mist 76 weight part by P.O425 cement 304 weight part and forms;
B, mixing moulding maintenance: by the component raw material mix and blend of proportioning described in step a, shaping and maintenance to specifying the length of time (maintenance is to 3d, 28d or 60d etc.), namely obtainedly mix composite modified high-titanium slag micro mist concrete.
Embodiment 32 ~ 38:
A kind of concrete preparation method, step is:
A, batching: get each component raw material by the feed composition of sand 850 weight part, stone 1050 weight part, water 175 weight part, polycarboxylate water-reducer 1.4 weight part, gelling material 380 weight part and weight part composition;
The gelling material of described 380 weight parts to be mixed with composite modified high-titanium slag micro mist 76 ~ 152 weight part by P.O425 cement 228 ~ 304 weight part and forms; In each embodiment, the concrete weight part consumption of each component raw material is in table 5;
Table 5:
B, mixing moulding maintenance: by the component raw material mix and blend of proportioning described in step a, shaping and maintenance to specifying the length of time (maintenance is to 3d, 28d or 60d etc.), namely obtainedly mix composite modified high-titanium slag micro mist concrete.
In above-described embodiment 29 ~ 38: described composite modified high-titanium slag micro mist by weight percent be the high-titanium slag of 50% ~ 67%, the metakaolin of the circulating fluidized bed combustion coal lime-ash and 0% ~ 8% (being preferably 4% ~ 8%) of 31% ~ 50% mix form; Concrete weight percent composition can with arbitrary in embodiment 19 ~ 28.
In above-described embodiment: described high-titanium slag is the granulated blast-furnace high-titanium slag that v-bearing titanomagnetite smelting produces, and main chemical compositions and weight percent consist of TiO
215% ~ 25%, CaO 20 ~ 40%, MgO 6 ~ 10%, SiO
215 ~ 32%, Al
2o
310 ~ 17%;
In above-described embodiment: described circulating fluidized bed combustion coal lime-ash is that circular fluid bed is coal fire discharged, and main chemical compositions and weight percent consist of CaO 8 ~ 21%, SO
35 ~ 20%, SiO
235 ~ 50%, Al
2o
310 ~ 25%;
In above-described embodiment: described metakaolin buys from Inner Mongolia Chaopai Kaolin Co., Ltd., also can be other commercially available prod, and main chemical compositions and weight percent consist of SiO
250 ~ 55%, Al
2o
340 ~ 45%, other minor component 3% ~ 5%.
In above-described embodiment: described high-titanium slag, circulating fluidized bed combustion coal lime-ash and metakaolin are mixing or through combined grinding after separate grinding, and the specific surface area>=350m of mixture after grinding
2/ kg, 28d (namely 28 days) activity index>=75%, Mortar'S Flowability are than>=95%.
Other minor component described is generally Fe
2o
3, K
2o, Na
2one or more mixture in O.
In above-described embodiment: each raw material adopted is commercially available prod.
In above-described embodiment: in the percentage adopted, do not indicate especially, be weight (quality) percentage or well known to a person skilled in the art percentage; Described heavy amount (quality) part can be all gram or kilogram.
In above-described embodiment: the numerical value etc. such as component raw material consumption are scope, and any point is all applicable.
The concrete same prior art of technology contents described in content of the present invention and above-described embodiment.
Above-described embodiment only have selected the cement that different types of adulterant replaces different ratios, carry out the comparative study of concrete performance, different amendments can be made easily on these embodiment bases for those skilled in the art, and General Principle described herein is applied to need not through performing creative labour in other embodiment, therefore, the invention is not restricted to above-described embodiment; Those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (10)
1., for the composite modified high-titanium slag micro mist in concrete, it is characterized in that: by weight percent be the high-titanium slag of 50% ~ 67%, the circulating fluidized bed combustion coal lime-ash of 31% ~ 50% and 0% ~ 8% metakaolin mix form.
2. by described in claim 1 for the composite modified high-titanium slag micro mist in concrete, it is characterized in that: main chemical compositions and the weight percent of described high-titanium slag consist of TiO
215% ~ 25%, CaO 20 ~ 40 %, MgO 6 ~ 10 %, SiO
215 ~ 32 %, Al
2o
310 ~ 17 %.
3. by described in claim 1 for the composite modified high-titanium slag micro mist in concrete, it is characterized in that: the main chemical compositions of described circulating fluidized bed combustion coal lime-ash and weight percent consist of CaO 8 ~ 21 %, SO
35 ~ 20 %, SiO
235 ~ 50 %, Al
2o
310 ~ 25 %.
4. by described in claim 1 for the composite modified high-titanium slag micro mist in concrete, it is characterized in that: main chemical compositions and the weight percent of described metakaolin consist of SiO
250 ~ 55 %, Al
2o
340 ~ 45%, other minor component 3% ~ 5%.
5. press described in claim 1,2,3 or 4 for the composite modified high-titanium slag micro mist in concrete, it is characterized in that: described high-titanium slag, circulating fluidized bed combustion coal lime-ash and metakaolin mix or through combined grinding after separate grinding, the specific surface area>=350m of the mixture after grinding
2/ kg, 28d activity index>=75%, Mortar'S Flowability are than>=95%.
6. a concrete preparation method, is characterized in that step is:
A, batching: get each component raw material by the feed composition of sand 850 weight part, stone 1050 weight part, water 175 weight part, polycarboxylate water-reducer 1.4 weight part, gelling material 380 weight part and weight composition;
The gelling material of described 380 weight parts to be mixed with composite modified high-titanium slag micro mist 76 ~ 152 weight part by P.O425 cement 228 ~ 304 weight part and forms;
B, mixing moulding maintenance: by the component raw material mix and blend of proportioning described in step a, shaping and maintenance to specifying the length of time, namely obtainedly mix composite modified high-titanium slag micro mist concrete.
7., by concrete preparation method described in claim 6, it is characterized in that: described composite modified high-titanium slag micro mist by weight percent be the high-titanium slag of 50% ~ 67%, the circulating fluidized bed combustion coal lime-ash of 31% ~ 50% and 0% ~ 8% metakaolin mix and form.
8., by concrete preparation method described in claim 6 or 7, it is characterized in that:
Main chemical compositions and the weight percent of described high-titanium slag consist of TiO
215% ~ 25%, CaO 20 ~ 40 %, MgO 6 ~ 10 %, SiO
215 ~ 32 %, Al
2o
310 ~ 17 %;
The main chemical compositions of described circulating fluidized bed combustion coal lime-ash and weight percent consist of CaO 8 ~ 21 %, SO
35 ~ 20 %, SiO
235 ~ 50 %, Al
2o
310 ~ 25 %;
Main chemical compositions and the weight percent of described metakaolin consist of SiO
250 ~ 55 %, Al
2o
340 ~ 45%, other minor component 3% ~ 5%.
9. by concrete preparation method described in claim 6 or 7, it is characterized in that: described high-titanium slag, circulating fluidized bed combustion coal lime-ash and metakaolin mix or through combined grinding after separate grinding, the specific surface area>=350m of the mixture after grinding
2/ kg, 28d activity index>=75%, Mortar'S Flowability are than>=95%.
10. by concrete preparation method described in claim 8, it is characterized in that: described high-titanium slag, circulating fluidized bed combustion coal lime-ash and metakaolin mix or through combined grinding after separate grinding, the specific surface area>=350m of the mixture after grinding
2/ kg, 28d activity index>=75%, Mortar'S Flowability are than>=95%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365577A (en) * | 2016-08-31 | 2017-02-01 | 韩涛 | Method for preparing building materials with circulating fluid bed slag |
| CN114988760A (en) * | 2022-04-02 | 2022-09-02 | 湖北工业大学 | Titanium slag polymer anticorrosive paint and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452814A (en) * | 2010-10-19 | 2012-05-16 | 上海城建物资有限公司 | High strength concrete adopting desulfurized gypsum as activator, and preparation method thereof |
-
2014
- 2014-10-23 CN CN201410572459.9A patent/CN104402280B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102452814A (en) * | 2010-10-19 | 2012-05-16 | 上海城建物资有限公司 | High strength concrete adopting desulfurized gypsum as activator, and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365577A (en) * | 2016-08-31 | 2017-02-01 | 韩涛 | Method for preparing building materials with circulating fluid bed slag |
| CN114988760A (en) * | 2022-04-02 | 2022-09-02 | 湖北工业大学 | Titanium slag polymer anticorrosive paint and preparation method thereof |
| CN114988760B (en) * | 2022-04-02 | 2023-10-10 | 湖北工业大学 | Titanium slag polymer anticorrosive paint and preparation method thereof |
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