CN103880341B - A kind of concrete composition and concrete and preparation method thereof - Google Patents
A kind of concrete composition and concrete and preparation method thereof Download PDFInfo
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- CN103880341B CN103880341B CN201210564191.5A CN201210564191A CN103880341B CN 103880341 B CN103880341 B CN 103880341B CN 201210564191 A CN201210564191 A CN 201210564191A CN 103880341 B CN103880341 B CN 103880341B
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Abstract
The invention discloses a kind of concrete composition and concrete and preparation method thereof, described concrete composition contains cement, sand, building stones, flyash and iron filings, and described building stones comprise high-titanium dry slag.The concrete composition of the application of the invention has low, the environment amenable advantage of cost, and the concrete obtained is have enough intensity, good compressive property and heat-resistant antifriction performance.
Description
Technical field
The present invention relates to a kind of concrete composition and concrete and preparation method thereof.
Background technology
The concrete aggregate of heat-resistant antifriction ensures concrete one of important factor meeting technical requirements in high temperature environments, is also key factor that is cost-saving, convenient construction.
Domesticly at present generally adopt granite stones, andesite prepares the heat-resistant antifriction concrete of 300 DEG C ~ 600 DEG C, but use the cost of granite stones or andesite higher.Further, overexploitation rubble destroys vegetation, causes soil erosion.
Therefore, be badly in need of a kind of cost low, environmentally friendly, and there is the good concrete material of enough intensity, good compressive property and heat-resistant antifriction performance.
Summary of the invention
The object of the invention is to overcome prior art, to prepare the concrete cost of heat-resistant antifriction high and to the disagreeableness problem of environment, provide a kind of concrete composition and concrete and preparation method thereof.The concrete composition of the application of the invention has low, the environment amenable advantage of cost, and the concrete obtained is have enough intensity, good compressive property and heat-resistant antifriction performance.
The present inventor is surprised to find that, mix with cement, sand, flyash, iron filings and water by using the building stones comprising high-titanium dry slag, a kind of cost can be obtained low, and there is the concrete of enough intensity, good compressive property and heat-resistant antifriction performance, thus complete the present invention.
That is, the invention provides a kind of concrete composition, wherein, described concrete composition contains cement, sand, building stones, flyash and iron filings, and described building stones comprise high-titanium dry slag.
Present invention also offers a kind of concrete preparation method, the method comprises and being mixed with water by above-mentioned concrete composition.
Present invention also offers and prepared by aforesaid method and the concrete obtained.
According to concrete composition of the present invention, by introducing containing the building stones of high-titanium dry slag, replacing in prior art, all using granite stones and andesite etc. as building stones, not only reducing cost like this, decreasing destruction to environment.Further, the high-titanium dry slag produced when efficiently utilizing smelting vanadium-titanium magnetite by blast furnace, adds economic benefit while decreasing Solid state fermentation cost.In addition, by using the building stones containing high-titanium dry slag can also obtain the concrete with enough intensity, good compressive property and heat-resistant antifriction performance.
Embodiment
Below the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
Concrete composition of the present invention contains cement, sand, building stones, flyash and iron filings, and described building stones comprise high-titanium dry slag.
In the present invention, described high-titanium dry slag refers to relative to the common slag higher containing Titanium slag content of titanium dioxide, belongs to a kind of building stones of routine.Content of titanium dioxide in described high-titanium dry slag usually more than 20 % by weight, as 20-25 % by weight.
According to the present invention, the stone material that the melted gangue produced when described high-titanium dry slag is smelting vanadium-titanium magnetite by blast furnace is formed through air natural cooling or water-cooled.Use high-titanium dry slag to prepare concrete composition and concrete because the present invention only relates to.Above-mentioned smelting vanadium-titanium magnetite by blast furnace and the melted gangue of generation is formed the method for high-titanium dry slag and condition can be carried out with reference to ordinary method of the present invention through air natural cooling or water-cooled, is not repeated at this.
Under preferable case, described high-titanium dry slag contains titanium dioxide, magnesium oxide, aluminium sesquioxide, silicon-dioxide, calcium oxide and ferric oxide, and with the weighing scale of described high-titanium dry slag, the content of titanium dioxide is 20-25 % by weight, magnesian content is 7-11 % by weight, the content of aluminium sesquioxide is 9-13 % by weight, the content of silicon-dioxide is 20-28 % by weight, the content of calcium oxide is 20-26 % by weight, the content of ferric oxide is 1.8-3.5 % by weight.More preferably with the weighing scale of described high-titanium dry slag, the content of titanium dioxide is 20.5-24 % by weight, magnesian content is 8-10 % by weight, the content of aluminium sesquioxide is 10-11.5 % by weight, the content of silicon-dioxide is 22-26.5 % by weight, the content of calcium oxide is 21-24.5 % by weight, the content of ferric oxide is 2-3 % by weight.As the stone material that such high-titanium dry slag such as can be formed through air natural cooling or water-cooled for the melted gangue produced when blast furnace smelts vanadium titano-magnetite.
In the present invention, by using the high-titanium dry slag of above-mentioned composition content, the concrete obtained has enough intensity, good compressive property and heat-resistant antifriction performance, and the high-titanium dry slag abundant raw material of this composition content, and cost is low and easily obtain.
In the present invention, under preferable case, the median size of described high-titanium dry slag is 10-14mm.When the median size of described high-titanium dry slag is not in above-mentioned scope, can be pulverized by conventional method.Jaw crusher such as can be adopted to pulverize it.
According to the present invention, described building stones except high-titanium dry slag can also containing this area the various building stones commonly used, such as granite stones, andesite are joined.
According to the present invention, the content of described high-titanium dry slag in building stones is preferably more than 50 % by weight; Consider from cost and the concrete over-all properties that obtains, be more preferably more than 70 % by weight; More preferably more than 80 weight; Further be preferably more than 80 weight; Further be preferably more than 80 weight; Most preferably be 100 % by weight, also namely described building stones most preferably are high-titanium dry slag.
According to the present invention, the content of each composition of described concrete composition can change in wide scope.Under preferable case, relative to the building stones of 100 weight parts, described cement is 35-50 weight part, and described sand is 24-39 weight part, and described flyash is 15-21 weight part, and described iron filings are 60-165 weight part; More preferably relative to the building stones of 100 weight parts, described cement is 39-44 weight part, and described sand is 26-37 weight part, and described flyash is 17-19 weight part, and described iron filings are 67-157 weight part.By making the content of each composition of concrete composition in above-mentioned scope, the concrete obtained can be made to have better intensity, good compressive property and heat-resistant antifriction performance.
In the present invention, to described cement, there is no particular limitation, can the various cement commonly used by this area.Such as, the specification of described cement can be 42.5R ordinary Portland cement.Such cement can be available commercially from Flos Bombacis Malabarici steel enterprise and auspiciously reach cement company.
In the present invention, described sand can the sand commonly used by this area, such as river sand.To the specification of described sand, there is no particular limitation, can be the specification of the conventional sand in this area.Under preferable case, the median size of described sand can be 0.2-0.5mm.
In the present invention, described flyash can the various flyash commonly used by this area.Such as, described flyash can be second class powered coal ash; The main composition of flyash comprises: SiO
2, Al
2o
3, FeO, Fe
2o
3, CaO and TiO
2.
In the present invention, described iron filings can the various iron filings commonly used by this area.Having no particular limits the specification of described iron pin, can be the specification of the conventional iron pin in this area.Under preferable case, described iron filings thickness is the metal cutting scrap of 0.5-5mm, and tap density is 3100-3200kg/m
3, mean length 10-30mm.
According to the present invention, as required, described concrete composition can also containing this area the various admixtures commonly used.Such as, described admixture can be one or more in retardant, pumping agent and water reducer.Described retardant is used for delaying concrete coagulating time; Described pumping agent is for improving concrete mix pump-conveying property; Described water reducer significantly reduces its mixing water content for keeping cement paste, mortar and concrete work degree constant.
In the present invention, to the not special requirement of the consumption of described admixture, the conventional amount used of this area can be used.Under preferable case, relative to the building stones of 100 weight parts, described admixture is 1.2-1.7 weight part.
Present invention also offers a kind of concrete preparation method, the method comprises and being mixed with water by above-mentioned concrete composition.
According to the present invention, the consumption of described water has special restriction, can use the conventional amount used of this area.Under preferable case, with the use gauge of the described building stones of 100 weight parts, the consumption of water is 23-29 weight part; Be more preferably 25-27 weight part.
Present invention also offers a kind of concrete, this concrete is prepared by above-mentioned method to obtain.
According to concrete of the present invention, there is enough intensity, good compressive property and heat-resistant antifriction performance.
Below will be described the present invention by embodiment, but the present invention is not limited in following embodiment.
High-titanium dry slag in following examples is the blast furnace melted gangue that produces stone material of being formed of naturally cooling or water-cooled in atmosphere when smelting vanadium titano-magnetite, and the high-titanium dry slag obtained after being pulverized by jaw crusher.
Cement in following examples is available commercially from Flos Bombacis Malabarici steel enterprise and auspiciously reaches cement company, and specification is 42.5R.
Sand in following examples is available commercially from Flos Bombacis Malabarici gold Jiang Shashichang, and median size is 0.2-0.5mm.
Iron filings in following examples are available commercially from mechanism branch office of Kun Gang steel enterprise stock company, and specification is the metal cutting scrap of thickness 0.5-5mm, and tap density is 3165kg/m
3, mean length 10-30mm.
Flyash in following examples is available commercially from Flos Bombacis Malabarici Gang Qi company, and specification is second class powered coal ash.
Retardant in following examples is available commercially from Flos Bombacis Malabarici Gang Qi company.
In following examples, concrete ultimate compression strength adopts 28d cubic compressive strength standard value to measure; Concrete resistance toheat measures according to GB/T50081-2002 " ordinary concrete mechanical test method standard "; Concrete wear resisting property measures according to the wear test method in " inorganic earth material cut resistance test method " GB12988-1991 standard; Slump adopts the slump in Standard for test methods of properties of ordinary concrete mixture standard (GB T50080-2002) and slump flow test method to measure.
Embodiment 1-7
After carrying out proportioning according to each composition in table 2, then be mixed with water and obtain concrete; Wherein, relative to the high-titanium dry slag of 100 weight parts, the consumption of water is 25 weight parts.The median size of high-titanium dry slag and component content are in table 1, and the concrete ultimate compression strength, resistance toheat, wear resisting property and the slump that obtain are in table 3.
Table 1
Table 2
| Cement | Sand | High-titanium dry slag | Flyash | Iron filings | Retardant | |
| Embodiment 1 | 380 | 350 | 960 | 170 | 1500 | - |
| Embodiment 2 | 400 | 330 | 960 | 170 | 1250 | - |
| Embodiment 3 | 400 | 280 | 960 | 170 | 950 | - |
| Embodiment 4 | 420 | 250 | 960 | 180 | 650 | - |
| Embodiment 5 | 400 | 280 | 1030 | 164 | 950 | 10.12 |
| Embodiment 6 | 500 | 280 | 960 | 170 | 950 | - |
| Embodiment 7 | 400 | 280 | 960 | 210 | 950 | - |
Note :-represent and do not add
Comparative example 1
Carrying out according to the method for embodiment 3, replacing high-titanium dry slag unlike adopting the granite stones of identical weight part.The concrete ultimate compression strength, resistance toheat, wear resisting property and the slump that obtain are in table 3.
Table 3
| Numbering | 28d ultimate compression strength (MPa) | Heat-resisting 600 DEG C (MPa) | Wear loss (g) | Slump (cm) |
| Embodiment 1 | 40.6 | 35.8 | 2.0 | 17 |
| Embodiment 2 | 42.1 | 39.3 | 2.3 | 18 |
| Embodiment 3 | 40.7 | 37.2 | 2.4 | 15 |
| Embodiment 4 | 45.5 | 35.5 | 2.5 | 16 |
| Embodiment 5 | 43.5 | 35.7 | 1.9 | 19 |
| Embodiment 6 | 40.2 | 35.2 | 2.5 | 15 |
| Embodiment 7 | 40.1 | 35.3 | 2.6 | 16 |
| Comparative example 1 | 39.5 | 35.2 | 2.9 | 14 |
Can be found out by embodiment 1-7, the concrete obtained by the concrete composition used containing high-titanium dry slag has enough intensity, good compressive property and heat-resistant antifriction performance.And all reach concrete resistance toheat in " ordinary concrete mechanical test method standard " GB/T50081-2002 and measure requirement; Also reach concrete wear resisting property in " inorganic earth material cut resistance test method " GB12988-1991 standard simultaneously and measure requirement.
In addition, by embodiment 3 and comparative example 1 known, can also improve by using described high-titanium dry slag the concrete ultimate compression strength, resistance toheat and the wear resisting property that obtain further.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible array mode.
In addition, also can carry out arbitrary combination between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (7)
1. a concrete composition, it is characterized in that, described concrete composition contains cement, sand, building stones, flyash and iron filings, described building stones comprise high-titanium dry slag, relative to the building stones of 100 weight parts, described cement is 35-50 weight part, described sand is 24-39 weight part, described flyash is 15-21 weight part, described iron filings are 60-165 weight part, and the content of described high-titanium dry slag in building stones is more than 50 % by weight, the stone material that the melted gangue that described high-titanium dry slag produces when being smelting vanadium-titanium magnetite by blast furnace is formed through air natural cooling or water-cooled, the median size of described high-titanium dry slag is 10-14mm.
2. concrete composition according to claim 1, wherein, relative to the building stones of 100 weight parts, described cement is 39-44 weight part, described sand is 26-37 weight part, described flyash is 17-19 weight part, and described iron filings are 67-157 weight part, and the content of described high-titanium dry slag in building stones is more than 50 % by weight.
3. concrete composition according to claim 1 and 2, wherein, described high-titanium dry slag contains titanium dioxide, magnesium oxide, aluminium sesquioxide, silicon-dioxide, calcium oxide and ferric oxide; With the weighing scale of described high-titanium dry slag, the content of titanium dioxide is 20-25 % by weight, magnesian content is 7-11 % by weight, the content of aluminium sesquioxide is 9-13 % by weight, the content of silicon-dioxide is 20-28 % by weight, the content of calcium oxide is 20-26 % by weight, the content of ferric oxide is 1.8-3.5 % by weight.
4. concrete composition according to claim 1, wherein, described concrete composition is also containing admixture, and described admixture is one or more in retardant, pumping agent and water reducer.
5. concrete composition according to claim 4, wherein, relative to the building stones of 100 weight parts, the content of described admixture is 1.2-1.7 weight part.
6. a concrete preparation method, is characterized in that, the method comprises and being mixed with water by the concrete composition in claim 1-5 described in any one.
7. a concrete, is characterized in that, this concrete is that method according to claim 6 preparation obtains.
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| CN107721288A (en) * | 2017-11-14 | 2018-02-23 | 湖州力奥电梯配件有限公司 | A kind of elevator hoistways upper beam structure |
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| CN102329113A (en) * | 2011-07-15 | 2012-01-25 | 攀枝花学院 | Composite high titanium and dry slag pavement concrete and preparation method thereof |
| CN102701678A (en) * | 2012-06-13 | 2012-10-03 | 江苏建华新型墙材有限公司 | Delayed coagulation ready-mixed mortar and preparation method thereof |
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| CN102329113A (en) * | 2011-07-15 | 2012-01-25 | 攀枝花学院 | Composite high titanium and dry slag pavement concrete and preparation method thereof |
| CN102701678A (en) * | 2012-06-13 | 2012-10-03 | 江苏建华新型墙材有限公司 | Delayed coagulation ready-mixed mortar and preparation method thereof |
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