CN103755251A - Concrete block of taking coal ash and mineral powder as cementitious materials and preparation method of concrete block - Google Patents
Concrete block of taking coal ash and mineral powder as cementitious materials and preparation method of concrete block Download PDFInfo
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- CN103755251A CN103755251A CN201310725606.7A CN201310725606A CN103755251A CN 103755251 A CN103755251 A CN 103755251A CN 201310725606 A CN201310725606 A CN 201310725606A CN 103755251 A CN103755251 A CN 103755251A
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- China
- Prior art keywords
- breeze
- flyash
- gelling material
- take
- concrete segment
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
Abstract
The invention discloses a concrete block of taking coal ash and mineral powder as cementitious materials and a preparation method of the concrete block. The concrete block comprises cementitious materials, sand, a water reducer, an activator and water, wherein the cementitious materials include cement, coal ash and mineral powder; the coal ash and the mineral powder are compounded and doped according to the ratio of 1:1; the doping amount of the coal ash and the mineral powder is 60-100% of weight of the cementitious materials. The dose of the cement in the existing concrete is reduced by adopting a mode of compounding and doping the coal ash and the mineral powder, and the concrete block has the advantages of being energy-saving and environment-friendly, and meanwhile, the strength of the existing concrete block is also improved.
Description
Technical field
The present invention relates to building material technical field, particularly a kind ofly take concrete segment that flyash and breeze be gelling material and preparation method thereof.
Background technology
Development along with concrete technology, after particularly the design requirements of high performance concrete improves, in concrete, use separately cement can not meet the requirement of putting into practice engineering as gelling material, the appropriate mineral admixture that mixes is that preparation has one of important channel of works fine performance concrete building block.Flyash, slag is all to belong to industrial residue, their aboundresources, cheap, contain a large amount of activeconstituentss, this activeconstituents can be excited under the alkaline environment of hydrated cementitious, thereby formation gum material, in order to replace cement as concrete gelling material, both can fine reduction use cement to make concrete Cost Problems, can also better solve industrial waste and stack problem, be conducive to ecotope, and flyash, slag mixes after concrete, also can improve concrete segment chemical resistance of concrete ability, improve to different levels the serviceability of concrete segment.Therefore flyash, slag are the material modified desirable adulterants of current body of wall.
Although flyash utilisation technology in concrete is quite ripe, in concrete, adding coal ash can improve concrete more performance, but it also has a fatal weakness after being spiked into concrete, can reduce concrete early strength, therefore wanting to make good use of flyash must resolve this problem.Same breeze is applied to also longer history in concrete, but the workability of breeze is poor, and mixing in concrete can the concrete mobility of impact, pumpability, cohesiveness.Therefore, bring into play the good effect of breeze, also must solve the workability problem of breeze.
Summary of the invention
For overcoming the above problems, the present invention replaces cement by the flyash with different addition contents, breeze, and add certain exciting agent to excite its lateral reactivity, prepare concrete segment, by measuring the mechanical property of building block, the final best addition content of determining flyash, breeze, obtains the proportioning after gelling material is optimized, and final production goes out the concrete segment that work excellent performance, intensity and weather resistance meet the demands.
?
The object of the present invention is to provide a kind of concrete segment that flyash and breeze be gelling material and preparation method thereof of take, it can make flyash and breeze make the most of the advantage and complementary action, wherein to mix the large effect of one in concrete be exactly enhancing to breeze, particularly makes early age strength of concrete be significantly improved.Meanwhile, mix can the concrete workability problem of fine solution in concrete for flyash.Therefore, concrete segment provided by the invention and preparation method thereof can improve concrete property indices well.
To achieve these goals, the invention provides a kind of concrete segment that flyash and breeze be gelling material of take, it comprises gelling material, sand, water reducer, exciting agent and water, described gelling material comprises cement, flyash and breeze, described flyash and described breeze are in the ratio combined addition of 1:1, and the addition content of described flyash and described breeze is the 60%-100% of gelling material weight.
Preferably, the addition content of described flyash and described breeze is the 70%-80% of gelling material weight.
Preferably, the addition content of described flyash and described breeze is 70% of gelling material weight.
Further, described exciting agent is Na
2sO
4.
To achieve these goals, the present invention also provides a kind of preparation method of take the concrete segment that flyash and breeze be gelling material, it is characterized in that, comprises the following steps:
A) preparation of gelling material: the cement, flyash and the breeze that take respectively proportioning weight part, the addition content of described cement is the 0%-100% of described gelling material, described flyash and described breeze are in the ratio combined addition of 1:1, and the addition content of described flyash and described breeze is the 60%-100% of described gelling material weight; Described cement, described flyash and described breeze are mixed with water and stirred, make gelling material;
B) sand, water reducer and exciting agent added in the material of a) preparing through step and stir;
C) utilize block machine by the mixture compression moulding stirring, make building block base substrate;
D) the building block base substrate of moulding is standing, maintenance, makes building block finished product.
Further, cement described in described gelling material, described flyash and the overall weight of described breeze and the ratio of water are 2:5.
Further, described exciting agent is Na
2sO
4, in the present invention, admixture exciting agent Main Function is to excite the early activity of breeze and flyash, the development that improves its early strength.
Preferably, the addition content of described flyash and described breeze is the 70%-80% of gelling material weight.
Preferably, the addition content of described flyash and described breeze is 70% of gelling material weight.
In the present invention, breeze, flyash and cement composition gelling material, by breeze, flyash is compound mixes after concrete, hydration process can excite mutually and produce plural gel effect.In the plural gel system forming above-mentioned three, the activity of cement is the highest, is secondly breeze, finally flyash, so when three kinds of materials are gathered in concrete, cement is aquation at first, generates hydrated calcium silicate (CSH) and hydrated calcium aluminate sulfate (CASH) and Ca (OH)
2deng; Breeze, flyash have latent hydraulicity, containing the material of a large amount of volcanic ash character, the Ca generating after hydrated cementitious (OH)
2all can play induction excitation to the aquation of breeze, flyash with the gypsum in cement, because the hydration activity of breeze is higher than flyash, fast than flyash of the hydration reaction of breeze in cement slurry, and the aquation of breeze contributes to the increase of hydrated calcium silicate (CSH) gel, the CaO that breeze is separated out simultaneously promotes the dissolving of aluminium, silicon phase in fly ash grain, aluminium in aquation liquid phase, the concentration of silicon are increased, and these have all played promoter action to accelerating the aquation process of breeze and flyash; The activity of breeze is different from flyash, and it has self hydraulicity, does not just simply mix again with flyash after admixture.The mix ratio that adopted combined addition mode optimization design, two kinds of mixing materials are learnt from other's strong points to offset one's weaknesses, just can make material in performance, produce certain complementary action, effectively improve concrete properties, make up the defect that independent adding coal ash reduces early age strength of concrete, guarantee that the concrete structure after sclerosis is more closely knit, promote the early stage and later strength of concrete segment to be effectively improved.
Embodiment
Below in conjunction with concrete embodiment, to of the present invention, a kind ofly take concrete segment that flyash and breeze be gelling material and preparation method thereof and make further and explaining, but this is explained and does not form the improper restriction to technical solution of the present invention.
Embodiment mono-
A kind ofly take concrete segment that flyash and breeze be gelling material and preparation method thereof, by cement 90 g, water reducer 2.25 g, flyash 180g, breeze 180g, exciting agent 13.5g, sand 1350 g, water 180ml, get the raw materials ready, after described flyash, breeze and cement and suitable quantity of water are stirred, add described exciting agent, water reducer and sand, and add water and stir.Utilize block machine by the mixture compression moulding stirring, make building block base substrate, the building block base substrate of moulding is standing, maintenance, make building block finished product.7d folding strength and the ultimate compression strength of described concrete segment are respectively 7.21MPa and 34.6MPa, and 28d folding strength and ultimate compression strength are respectively 7.6MPa and 37.1MPa.
Embodiment bis-
A kind ofly take concrete segment that flyash and breeze be gelling material and preparation method thereof, by cement 135g, water reducer 2.25 g, flyash 157.5g, breeze 157.5g, exciting agent 13.5g, sand 1350 g, water 180ml, get the raw materials ready, after described flyash, breeze and cement and suitable quantity of water are stirred, add described exciting agent, water reducer and sand, and add water and stir.Utilize block machine by the mixture compression moulding stirring, make building block base substrate, the building block base substrate of moulding is standing, maintenance, make building block finished product.7d folding strength and the ultimate compression strength of described concrete segment are respectively 7.22MPa and 38.4MPa, and 28d folding strength and ultimate compression strength are respectively 8.43MPa and 42.8MPa.
Embodiment tri-
A kind ofly take concrete segment that flyash and breeze be gelling material and preparation method thereof, by cement 180g, water reducer 2.25 g, flyash 135g, breeze 135g, exciting agent 13.5g, sand 1350 g, water 180ml, get the raw materials ready, after described flyash, breeze and cement and suitable quantity of water are stirred, add described exciting agent, water reducer and sand, and add water and stir.Utilize block machine by the mixture compression moulding stirring, make building block base substrate, the building block base substrate of moulding is standing, maintenance, make building block finished product.7d folding strength and the ultimate compression strength of described concrete segment are respectively 7.3MPa and 39.3MPa, and 28d folding strength and ultimate compression strength are respectively 8.95MPa and 45.8MPa.
It should be noted that; the above-mentioned explanation of disclosed embodiment makes professional and technical personnel in the field for the present embodiment, to carry out multiple types like changing and revising apparently; this similar variation is all distortion that those skilled in the art can directly draw or be easy to just associate from disclosure of invention, all should belong to protection scope of the present invention.Therefore the present invention can not be subject to the restriction of this embodiment.
Claims (9)
1. take the concrete segment that flyash and breeze be gelling material for one kind, it is characterized in that, described concrete segment comprises gelling material, sand, water reducer, exciting agent and water, described gelling material comprises cement, flyash and breeze, described flyash and described breeze are in the ratio combined addition of 1:1, and the addition content of described flyash and described breeze is the 60%-100% of gelling material weight.
2. as claimed in claim 1ly take the concrete segment that flyash and breeze be gelling material, it is characterized in that, the addition content of described flyash and described breeze is the 70%-80% of gelling material weight.
3. as claimed in claim 2ly take the concrete segment that flyash and breeze be gelling material, it is characterized in that, the addition content of described flyash and described breeze is 70% of gelling material weight.
4. as claimed in claim 1ly take the concrete segment that flyash and breeze be gelling material, it is characterized in that, described exciting agent is Na
2sO
4.
5. take the preparation method of the concrete segment that flyash and breeze be gelling material, it is characterized in that, comprise the following steps:
A) preparation of gelling material: the cement, flyash and the breeze that take respectively proportioning weight part, the addition content of described cement is the 0%-100% of described gelling material, described flyash and described breeze are in the ratio combined addition of 1:1, and the addition content of described flyash and described breeze is the 60%-100% of described gelling material weight; Described cement, described flyash and described breeze are mixed with water and stirred, make gelling material;
B) sand, water reducer and exciting agent added in the material of a) preparing through step and stir;
C) utilize block machine by the mixture compression moulding stirring, make building block base substrate;
D) the building block base substrate of moulding is standing, maintenance, makes building block finished product.
6. preparation method of take the concrete segment that flyash and breeze be gelling material as claimed in claim 5, is characterized in that, cement described in described gelling material, described flyash and the overall weight of described breeze and the ratio of water are 2:5.
7. preparation method of take the concrete segment that flyash and breeze be gelling material as claimed in claim 5, is characterized in that, described exciting agent is Na
2sO
4.
8. preparation method of take the concrete segment that flyash and breeze be gelling material as claimed in claim 5, is characterized in that, the addition content of described flyash and described breeze is the 70%-80% of gelling material weight.
9. preparation method of take the concrete segment that flyash and breeze be gelling material as claimed in claim 8, is characterized in that, the addition content of described flyash and described breeze is 70% of gelling material weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725606.7A CN103755251A (en) | 2013-12-25 | 2013-12-25 | Concrete block of taking coal ash and mineral powder as cementitious materials and preparation method of concrete block |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310725606.7A CN103755251A (en) | 2013-12-25 | 2013-12-25 | Concrete block of taking coal ash and mineral powder as cementitious materials and preparation method of concrete block |
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| CN103755251A true CN103755251A (en) | 2014-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310725606.7A Pending CN103755251A (en) | 2013-12-25 | 2013-12-25 | Concrete block of taking coal ash and mineral powder as cementitious materials and preparation method of concrete block |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981380A (en) * | 2019-12-20 | 2020-04-10 | 湖南大学 | Concrete for underground pipeline and preparation method thereof |
| CN112408921A (en) * | 2020-12-15 | 2021-02-26 | 温州鼎玛建筑技术有限公司 | Energy-saving concrete for building and preparation process thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193434A (en) * | 2013-04-01 | 2013-07-10 | 北京东方建宇混凝土科学技术研究院有限公司 | Low-carbon and carbon-absorbing concrete and preparation method thereof |
| CN103265239A (en) * | 2013-05-17 | 2013-08-28 | 连云港港口工程设计研究院有限公司 | Method for preparing sludge concrete |
-
2013
- 2013-12-25 CN CN201310725606.7A patent/CN103755251A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193434A (en) * | 2013-04-01 | 2013-07-10 | 北京东方建宇混凝土科学技术研究院有限公司 | Low-carbon and carbon-absorbing concrete and preparation method thereof |
| CN103265239A (en) * | 2013-05-17 | 2013-08-28 | 连云港港口工程设计研究院有限公司 | Method for preparing sludge concrete |
Non-Patent Citations (1)
| Title |
|---|
| 秦鸿根: "《建筑工程常用材料规范应用详解》", 31 January 2013, article ""1.5 用于水泥和混凝土中的粒化高炉矿渣粉"", pages: 51-54 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110981380A (en) * | 2019-12-20 | 2020-04-10 | 湖南大学 | Concrete for underground pipeline and preparation method thereof |
| CN112408921A (en) * | 2020-12-15 | 2021-02-26 | 温州鼎玛建筑技术有限公司 | Energy-saving concrete for building and preparation process thereof |
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| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Peng Jie Inventor after: Dong Jianmiao Inventor after: Wu Huiqin Inventor before: Wu Huiqin Inventor before: Peng Jie |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WU HUIQIN PENG JIE TO: PENG JIE DONG JIANMIAO WU HUIQIN |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140430 |
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| RJ01 | Rejection of invention patent application after publication |