CN105417977A - Fly ash ceramsite sand, preparation method and applications thereof - Google Patents
Fly ash ceramsite sand, preparation method and applications thereof Download PDFInfo
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- CN105417977A CN105417977A CN201511021649.2A CN201511021649A CN105417977A CN 105417977 A CN105417977 A CN 105417977A CN 201511021649 A CN201511021649 A CN 201511021649A CN 105417977 A CN105417977 A CN 105417977A
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- flyash
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/021—Agglomerated materials, e.g. artificial aggregates agglomerated by a mineral binder, e.g. cement
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Civil Engineering (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a fly ash ceramsite sand, a preparation method, and applications thereof. The fly ash ceramsite sand comprises fly ash, quicklime powder, and silicate cement. The preparation method comprises the following steps: (1) mixing fly ash, quicklime powder, and silicate cement; (2) mixing the mixture obtained in the step (1) with water, and producing sand. The preparation method is simple and practical, the cost is low, and the product meets the national standards of cylinder compressive strength of lightweight aggregate. The fly ash ceramsite sand is used in concrete production.
Description
Technical field
The present invention relates to concrete material preparation field, particularly, relate to a kind of flyash ceramsite sand, the preparation method of flyash ceramsite sand, the flyash ceramsite sand prepared by the method, and this flyash ceramsite sand is applied in production concrete.
Background technology
Sand is the main raw material (slightly accounting for 1/3rd) in concrete, and it excavates acquisition by occurring in nature.Flyash is the industrial waste that heat power plant produces, and it is made into ceramsite sand and substitutes the discharge that natural sand can reduce industrial waste, reduces and excavates natural destruction.Prepare the mode that ceramsite sand can adopt high temperature sintering, sinter flyash into ceramsite sand with rotary kiln, in this process, need the heat energy of at substantial; Also can adopt binding agent, flyash is bonded to globe and make, but such binding agent price is higher, influenced larger for its economy of concrete material.
Summary of the invention
The object of the invention is to overcome and existingly prepare in the process of flyash ceramsite sand the defect needing to adopt high-temperature roasting or need to adopt binding agent that price is higher, a kind of new flyash ceramsite sand and its preparation method and application is provided.
For achieving the above object, the invention provides a kind of flyash ceramsite sand, wherein, this flyash ceramsite sand contains flyash, calcium lime powder and silicate cement.
Present invention also offers the preparation method of described flyash ceramsite sand, wherein, the method comprises the steps:
(1) flyash, calcium lime powder and silicate cement are mixed;
(2) mixture that step (1) obtains is mixed with water, then become sand.
Moreover, present invention also offers the flyash ceramsite sand prepared by aforesaid method.
Present invention also offers and applied in production concrete by above-mentioned flyash ceramsite sand.
Flyash ceramsite sand preparation method provided by the invention, without the need to high-temperature roasting, does not need expensive binding agent yet, and the method is simple, and practical, cost is low.The flyash ceramsite sand prepared according to preparation method provided by the invention meets the cylindrical compress strength requirement of national light-weight aggregate standard GB/T17431-2010.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
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.
The invention provides a kind of flyash ceramsite sand, this flyash ceramsite sand contains flyash, calcium lime powder and silicate cement.
According to the present invention, although the content range of each component can change in wider scope in described flyash ceramsite sand, but, under preferable case, in order to obtain the better flyash ceramsite sand of quality, with the gross weight of described flyash ceramsite sand for benchmark, in described flyash ceramsite sand, the content of described flyash is 65-95 % by weight, and the content of described calcium lime powder is 1-20 % by weight, and the content of described silicate cement is 1-20 % by weight; More preferably in situation, with the gross weight of described flyash ceramsite sand for benchmark, the content of described flyash is 75-85 % by weight, and the content of described calcium lime powder is 5-15 % by weight, and the content of described silicate cement is 5-15 % by weight.
According to the present invention, described flyash can be the various flyash that this area routine uses.Under preferable case, described flyash is at least one in I level flyash, П level flyash and Ш level flyash.Described I level flyash, described П level flyash and described Ш level flyash carry out classification according to its fineness, water requirement, loss on ignition, water content and sulfur trioxide content.The parameter index of described I level flyash as: adopt 45 μm of screen over-sizes (%) to be not more than 12%, water requirement is not more than 95%, and loss on ignition is not more than 5%, and water content is not more than 1%, and sulfur trioxide content is not more than 3%.The parameter index of described II level flyash as: adopt 45 μm of screen over-sizes (%) to be not more than 20%, water requirement is not more than 105%, and loss on ignition is not more than 8%, and water content is not more than 1%, and sulfur trioxide content is not more than 3%.The parameter index of described III level flyash as: adopt 45 μm of screen over-sizes (%) to be not more than 45%, water requirement is not more than 115%, and loss on ignition is not more than 15%, and water content no standard, sulfur trioxide content is not more than 3%.
Further preferably, the loss on ignition of described flyash is less than 3 % by weight.
According to the present invention, under preferable case, the average particulate diameter of described calcium lime powder is 50-300 micron.
According to the present invention, described silicate cement can be the selection of this area routine, such as, can be ordinary Portland cement.
According to the present invention, described flyash ceramsite sand can be spherical, oval spherical or irregular rubble shape.Under preferable case, described flyash ceramsite sand is spherical.
The invention provides a kind of preparation method of flyash ceramsite sand, the method comprises the steps:
(1) flyash, calcium lime powder and silicate cement are mixed;
(2) mixture that step (1) obtains is mixed with water, then become sand.
According to the present invention, the mixture obtained in step (1) is 100 % by weight, the consumption of described flyash can be 65-95 % by weight, and the consumption of described calcium lime powder can be 1-20 % by weight, and the consumption of described silicate cement can be 1-20 % by weight.Under preferable case, the mixture obtained in step (1) is 100 % by weight, and the consumption of described flyash is 75-85 % by weight, and the consumption of described calcium lime powder is 5-15 % by weight, and the consumption of described silicate cement is 5-15 % by weight.
In described method provided by the invention, described flyash, described calcium lime powder and described silicate cement with describe above identical.
According to the present invention, under preferable case, in step (2), the weight ratio of the consumption of the mixture that step (1) obtains and water is 1-10:1; More preferably, in situation, in step (2), the weight ratio of the consumption of the mixture that step (1) obtains and water is 3-7:1.
According to the present invention, in order to the mixture making step (1) obtain mixes with water, water preferably sprays in described mixture with vaporific by the mode mixed with water by the mixture that step (1) obtains.
According to the present invention, described method can also comprise: after one-tenth sand, the In Shade maintenance of the sand process of described one-tenth sand obtained, and front 5-15 sprays a water in every two to three days afterwards to spray water in sand, and altogether implements spray water 20-40 days days every day.Described shady and cool place refers to without light direct beam, and temperature is no more than the environment of 20 DEG C.
According to the present invention, the mixing process of step (1) can be implemented in agitator.The implementation condition of described agitator can comprise: stirring velocity is 20-60r/min, and churning time is 1-5min.Preferably, stirring velocity is 40-50r/min, and churning time is 2-3min.
According to the present invention, the mixing of step (2) with become sand process and can implement in one-tenth sand machine.
Present invention also offers the flyash ceramsite sand prepared by aforesaid method.This flyash ceramsite sand meets the cylindrical compress strength requirement of national light-weight aggregate standard GB/T17431-2010.
Present invention also offers and applied in production concrete by above-mentioned flyash ceramsite sand.
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.
To be further described in detail the present invention by specific embodiment below.
In the examples below, flyash is purchased from meander electricity generating corporation, Ltd, and this flyash is III grade of flyash, and its loss on ignition is less than 3 % by weight; Calcium lime powder is purchased from brilliant mineral products processing company limited, and its average particulate diameter is 200 microns; Ordinary Portland cement is purchased from Beijing Jinyu company.
Embodiment 1
The present embodiment is for illustration of the preparation of flyash ceramsite sand.
75 weight parts of fine coal ashes, 12 weight parts of quicklime powder and 13 weight part ordinary Portland cements are put into agitator, under the rotating speed of 40r/min, stirs 2min, obtain a homogeneous mixture.This mixture is put into in sand machine, under the rotating speed of 30r/min, the water of 15 weight parts is sprayed into in sand machine with vaporific, mixes with described mixture, and make spherical flyash ceramsite sand.Then, by In Shade for this flyash ceramsite sand maintenance, first 10 day every morning, an every three days afterwards sprays water, formed flyash ceramsite sand A1 in 28 days afterwards to spray water in sand.
Comparative example 1
This comparative example is for illustration of the preparation of flyash ceramsite sand.
75 weight parts of fine coal ashes, 12 weight parts of quicklime powder, 13 weight part ordinary Portland cements are put into agitator, 2min is stirred under the rotating speed of 40r/min, obtain a homogeneous mixture, add the water of 15 weight parts, by this mixture pelleting, obtain the particulate of 2 millimeters, then dry at 220 DEG C, and fire under 1380 DEG C of high temperature, obtain flyash ceramsite sand D1.
Comparative example 2
This comparative example is for illustration of the preparation of flyash ceramsite sand.
75 weight parts of fine coal ashes, 12 weight parts of quicklime powder, 7 weight part ordinary Portland cements and 5 weight part sex change clays are put into agitator, 2min is stirred under the rotating speed of 40r/min, obtain a homogeneous mixture, add the water of 15 weight parts, by this mixture pelleting, obtain the particulate of 3 millimeters, then dry at 220 DEG C, and fire under 1380 DEG C of high temperature, obtain flyash ceramsite sand D2.
Embodiment 2
The present embodiment is for illustration of the preparation of flyash ceramsite sand.
85 weight parts of fine coal ashes, 8 weight parts of quicklime powder and 7 weight part ordinary Portland cements are put into agitator, under the rotating speed of 40r/min, stirs 2min, obtain a homogeneous mixture.This mixture is put into in sand machine, under the rotating speed of 30r/min, the water of 30 weight parts is sprayed into in sand machine with vaporific, mixes with described mixture, and make spherical flyash ceramsite sand.Then, by In Shade for this flyash ceramsite sand maintenance, first 15 day every morning, an every 2 days afterwards sprays water, formed flyash ceramsite sand A2 in 40 days afterwards to spray water in sand.
Embodiment 3
The present embodiment is for illustration of the preparation of flyash ceramsite sand.
80 weight parts of fine coal ashes, 10 weight parts of quicklime powder and 10 weight part ordinary Portland cements are put into agitator, under the rotating speed of 40r/min, stirs 2min, obtain a homogeneous mixture.This mixture is put into in sand machine, under the rotating speed of 30r/min, the water of 15 weight parts is sprayed into in sand machine with vaporific, mixes with described mixture, and make spherical flyash ceramsite sand.Then, by In Shade for this flyash ceramsite sand maintenance, first 10 day every morning, an every 3 days afterwards sprays water, formed flyash ceramsite sand A3 in 28 days afterwards to spray water in sand.
Detect according to the cylindrical compress strength of GB/T17431-2010 standard method to the flyash ceramsite sand obtained in above embodiment and comparative example, result is as shown in table 1.
Table 1
| Sand sample product | Cylindrical compress strength, MPa |
| Flyash ceramsite sand A1 | 20.5 |
| Flyash ceramsite sand D1 | 20.5 |
| Flyash ceramsite sand D2 | 20.0 |
| Flyash ceramsite sand A2 | 19.0 |
| Flyash ceramsite sand A3 | 19.5 |
As can be seen from the data of table 1, the 19-20.5MPa cylindrical compress strength of the flyash ceramsite sand prepared according to method of the present invention meets the requirement of strength of national light-weight aggregate standard.
Claims (16)
1. a flyash ceramsite sand, is characterized in that, this flyash ceramsite sand contains flyash, calcium lime powder and silicate cement.
2. flyash ceramsite sand according to claim 1, wherein, with the gross weight of described flyash ceramsite sand for benchmark, the content of described flyash is 65-95 % by weight, the content of described calcium lime powder is 1-20 % by weight, and the content of described silicate cement is 1-20 % by weight.
3. flyash ceramsite sand according to claim 2, wherein, with the gross weight of described flyash ceramsite sand for benchmark, the content of described flyash is 75-85 % by weight, the content of described calcium lime powder is 5-15 % by weight, and the content of described silicate cement is 5-15 % by weight.
4. according to the flyash ceramsite sand in claim 1-3 described in any one, wherein, described flyash is at least one in I level flyash, П level flyash and Ш level flyash, and the loss on ignition of described flyash is less than 3 % by weight.
5. according to the flyash ceramsite sand in claim 1-3 described in any one, wherein, the average particulate diameter of described calcium lime powder is 50-300 micron.
6. according to the flyash ceramsite sand in claim 1-3 described in any one, wherein, described flyash ceramsite sand is spherical.
7. a preparation method for flyash ceramsite sand, is characterized in that, the method comprises:
(1) flyash, calcium lime powder and silicate cement are mixed;
(2) mixture that step (1) obtains is mixed with water, then become sand.
8. method according to claim 7, wherein, the mixture obtained in step (1) is 100 % by weight, and the consumption of described flyash is 65-95 % by weight, the consumption of described calcium lime powder is 1-20 % by weight, and the consumption of described silicate cement is 1-20 % by weight.
9. method according to claim 8, wherein, the mixture obtained in step (1) is 100 % by weight, and the consumption of described flyash is 75-85 % by weight, the consumption of described calcium lime powder is 5-15 % by weight, and the consumption of described silicate cement is 5-15 % by weight.
10. according to the method in claim 7-9 described in any one, wherein, described flyash is at least one in I level flyash, П level flyash and Ш level flyash, and the loss on ignition of described flyash is less than 3 % by weight.
11. according to the method in claim 7-9 described in any one, and wherein, the average particulate diameter of described calcium lime powder is 50-300 micron.
12. methods according to claim 7, wherein, in step (2), the weight ratio of the consumption of the mixture that step (1) obtains and water is 1-10:1.
13. methods according to claim 7 or 12, wherein, the mode mixed with water by the mixture that step (1) obtains is for spray into water in described mixture with vaporific.
14. methods according to claim 7, wherein, described method also comprises: after one-tenth sand, the In Shade maintenance of sand that the process of described one-tenth sand is obtained, front 5-15 sprays a water in every two to three days afterwards to spray water in sand, and altogether implements spray water 20-40 days days every day.
15. flyash ceramsite sands prepared by the method in claim 7-14 described in any one.
Flyash ceramsite sand in 16. claim 1-6 and 15 described in any one is applied in production concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511021649.2A CN105417977A (en) | 2015-12-31 | 2015-12-31 | Fly ash ceramsite sand, preparation method and applications thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511021649.2A CN105417977A (en) | 2015-12-31 | 2015-12-31 | Fly ash ceramsite sand, preparation method and applications thereof |
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| CN105417977A true CN105417977A (en) | 2016-03-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015885A (en) * | 2019-04-23 | 2019-07-16 | 宿迁德特材料科技有限公司 | A kind of preparation method of high intensity low-frequency sound-absorbing plate |
| CN112456836A (en) * | 2020-12-23 | 2021-03-09 | 河南钰镁新材料科技有限公司 | Aggregate for plastering mortar and preparation method thereof |
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| CN1868963A (en) * | 2005-05-25 | 2006-11-29 | 张涛 | Formula of steam-free burning-free flgash ceramic particle |
| CN1900008A (en) * | 2006-07-24 | 2007-01-24 | 吉林省农业机械研究院 | Method for producing high strenght flyash ceramic sand |
| CN102092994A (en) * | 2010-11-25 | 2011-06-15 | 大连恒翔粉煤灰综合利用有限公司 | Fly ash sintering-free ceramsite |
| CN102351557A (en) * | 2011-06-22 | 2012-02-15 | 哈尔滨工业大学 | Method for preparing non-sintered ceramsite from activated sludge blended with fly ash |
| TW201321335A (en) * | 2011-11-24 | 2013-06-01 | Unigold Building Materials Co Ltd | Sand slurry |
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2015
- 2015-12-31 CN CN201511021649.2A patent/CN105417977A/en active Pending
Patent Citations (5)
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|---|---|---|---|---|
| CN1868963A (en) * | 2005-05-25 | 2006-11-29 | 张涛 | Formula of steam-free burning-free flgash ceramic particle |
| CN1900008A (en) * | 2006-07-24 | 2007-01-24 | 吉林省农业机械研究院 | Method for producing high strenght flyash ceramic sand |
| CN102092994A (en) * | 2010-11-25 | 2011-06-15 | 大连恒翔粉煤灰综合利用有限公司 | Fly ash sintering-free ceramsite |
| CN102351557A (en) * | 2011-06-22 | 2012-02-15 | 哈尔滨工业大学 | Method for preparing non-sintered ceramsite from activated sludge blended with fly ash |
| TW201321335A (en) * | 2011-11-24 | 2013-06-01 | Unigold Building Materials Co Ltd | Sand slurry |
Non-Patent Citations (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015885A (en) * | 2019-04-23 | 2019-07-16 | 宿迁德特材料科技有限公司 | A kind of preparation method of high intensity low-frequency sound-absorbing plate |
| CN112456836A (en) * | 2020-12-23 | 2021-03-09 | 河南钰镁新材料科技有限公司 | Aggregate for plastering mortar and preparation method thereof |
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Application publication date: 20160323 |