CN107814524A - The preparation of ultra fine sand pump concrete - Google Patents
The preparation of ultra fine sand pump concrete Download PDFInfo
- Publication number
- CN107814524A CN107814524A CN201711191854.2A CN201711191854A CN107814524A CN 107814524 A CN107814524 A CN 107814524A CN 201711191854 A CN201711191854 A CN 201711191854A CN 107814524 A CN107814524 A CN 107814524A
- Authority
- CN
- China
- Prior art keywords
- parts
- concrete
- fine sand
- special
- ultra fine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
Abstract
The present invention provides a kind of preparation of ultra fine sand pump concrete, and its percentage by weight is：130 200 parts of ultra fine sand, 38 parts of lime stone Machine-made Sand, in thick natural 130 150 parts of sand, 90~110 parts of flyash, 42 80 parts of cement, 6 18 parts of water reducer, 36 70 parts of water, special fine sand high-strength high-performance ready-mixed concrete is prepared in strict accordance with match ratio, before concrete stirring production, check of zero should be carried out to its automatic gauge facility, metering is using computerized control；It is special that the transport of special fine sand high-strength high-performance concrete will carry out special train, in transit, mix cylinder and be stirred with 1~3r/min speed, to avoid high-strength concrete from isolating；Make to mix cylinder before trucd mixer discharging and 1~2min quickly stirred with 8~12r/min, make concrete stir after again discharging enter pump；The test of the slump is carried out before outbound preceding and pumping respectively, and slump-loss should be not more than 20mm, and it has the advantages that, and good fluidity, workability are good, structural cracks is few, pumpability is strong.
Description
Technical field
The present invention relates to ultra fine sand Concrete Pumping Technology field, more particularly to a kind of system of ultra fine sand pump concrete
It is standby.
Background technology
China's ultra fine sand aboundresources, the Yangtze river basin, Marine formation, the Yellow River middle and lower reaches, Pearl River Delta and the Northwest
There is substantial amounts of ultra fine sand resource.The strength grade for the concrete that ultra fine sand is prepared, it is universal up to C40.But due to special thin
Sand has the characteristics such as clay content is high, specific surface area is big, grain composition is poor, causes the concrete of mix and the concrete of middle sand mix
Easily there are the features such as crack compared to having water consumption big, poor fluidity, the structure that pours.These shortcomings make ultra fine sand to be limited in
In dry concrete engineering structure.But ultra fine sand has fine size, and specific surface area is big, voidage is high, the characteristics of grading difference, root
The concrete prepared according to these characteristics, can only be low sand coarse aggregate ratio, low slump and low water usage amount, this " three-lows " phenomenon, Zhi Nengyong
In lazy flow concrete or dry concrete engineering, and the ultra-high pump concrete for having large fluidity is not suitable for it.
The content of the invention
In order to overcome problem of the prior art, the present invention provides a kind of preparation of ultra fine sand pump concrete, and it has stream
Dynamic the advantages that property is good, workability is good, structural cracks is few, pumpability is strong.
The technical scheme is that：A kind of preparation of ultra fine sand pump concrete is provided, its percentage by weight is：
Preferably, by 150 parts of ultra fine sand, 5 parts of lime stone Machine-made Sand, in thick natural 130 parts of sand, 90 parts of flyash, cement
50 parts are mixed, then 68 parts of 12 parts of water reducer, water additions are mixed, that is, draw finished product.
Preferably, the limestone content of the lime stone Machine-made Sand is 5~10%, and wherein the calcium carbonate content in stone flour is not
Less than 85%.
Preferably, special fine sand high-strength high-performance ready-mixed concrete is prepared in strict accordance with match ratio, concrete stirring life
It is antenatal, check of zero should be carried out to its automatic gauge facility, metering is using computerized control；
It is special that the transport of special fine sand high-strength high-performance concrete will carry out special train, in transit, mixes cylinder with 1~3r/min speed
Degree is stirred, to avoid high-strength concrete from isolating；Make to mix before trucd mixer discharging cylinder quickly stir 1 with 8~12r/min~
2min, make concrete stir after again discharging enter pump；The test of the slump is carried out before outbound preceding and pumping respectively, the slump
Loss should be not more than 20mm.
The beneficial effects of the invention are as follows：Have the advantages that good fluidity, workability are good, structural cracks is few, pumpability is strong.
Embodiment
The preparation of ultra fine sand pump concrete, its percentage by weight are：
Preferably, by 150 parts of ultra fine sand, 5 parts of lime stone Machine-made Sand, in thick natural 130 parts of sand, 90 parts of flyash, cement
50 parts are mixed, then 42 parts of 12 parts of water reducer, water additions are mixed, that is, draw finished product.
Preferably, the limestone content of the lime stone Machine-made Sand be 5-10%, the wherein calcium carbonate content in stone flour not
Less than 85%.
Preferably, special fine sand high-strength high-performance ready-mixed concrete is prepared in strict accordance with match ratio, concrete stirring life
It is antenatal, check of zero should be carried out to its automatic gauge facility, metering is using computerized control；
It is special that the transport of special fine sand high-strength high-performance concrete will carry out special train, in transit, mixes cylinder with 1~3r/min speed
Degree is stirred, to avoid high-strength concrete from isolating；Make to mix before trucd mixer discharging cylinder quickly stir 1 with 8~12r/min~
2min, make concrete stir after again discharging enter pump；The test of the slump is carried out before outbound preceding and pumping respectively, the slump
Loss should be not more than 20mm.
Embodiment 1
By 200 parts of ultra fine sand, 8 parts of lime stone Machine-made Sand, in thick natural 140 parts of sand, 100 parts of flyash, 70 parts of cement enter
Row is mixed, then 42 parts of 12 parts of water reducer, water additions are mixed, that is, draws finished product.
Special fine sand high-strength high-performance ready-mixed concrete is prepared in strict accordance with match ratio, should before concrete stirring production
Check of zero is carried out to its automatic gauge facility, metering is using computerized control；
It is special that the transport of special fine sand high-strength high-performance concrete will carry out special train, in transit, mixes cylinder with 1~3r/min speed
Degree is stirred, to avoid high-strength concrete from isolating；Make to mix before trucd mixer discharging cylinder quickly stir 1 with 8~12r/min~
2min, make concrete stir after again discharging enter pump；The test of the slump is carried out before outbound preceding and pumping respectively, the slump
Loss should be not more than 20mm.
Embodiment 2
By 150 parts of ultra fine sand, 5 parts of lime stone Machine-made Sand, in 80 parts of thick natural 130 parts of sand, 90 parts of flyash, cement progress
Mix, then 70 parts of 17 parts of water reducer, water additions are mixed, that is, draw finished product.
Special fine sand high-strength high-performance ready-mixed concrete is prepared in strict accordance with match ratio, should before concrete stirring production
Check of zero is carried out to its automatic gauge facility, metering is using computerized control；
It is special that the transport of special fine sand high-strength high-performance concrete will carry out special train, in transit, mixes cylinder with 1~3r/min speed
Degree is stirred, to avoid high-strength concrete from isolating；Make to mix before trucd mixer discharging cylinder quickly stir 1 with 8~12r/min~
2min, make concrete stir after again discharging enter pump；The test of the slump is carried out before outbound preceding and pumping respectively, the slump
Loss should be not more than 20mm.
The present invention has the advantages that good fluidity, workability are good, structural cracks is few, pumpability is strong.
Described above is embodiments of the invention, is not intended to limit the invention, for those skilled in the art,
The present invention can have various modifications and variations.Any modification for being made within the spirit and principles of the invention, equivalent substitution,
Improvement etc. all should be contained within scope of the presently claimed invention.
Claims (4)
1. the preparation of ultra fine sand pump concrete, it is characterised in that its percentage by weight is：
。
2. the preparation of ultra fine sand pump concrete according to claim 1, it is characterised in that：By 150 parts of ultra fine sand, lime stone
5 parts of Machine-made Sand, in thick natural 130 parts of sand, 90 parts of flyash, 50 parts of cement mixed, then by 12 parts of water reducer, water 68
Part adds and mixed, that is, draws finished product.
3. the preparation of ultra fine sand pump concrete according to claim 1, it is characterised in that：The stone of the lime stone Machine-made Sand
Lime stone content is 5~10%, and the wherein calcium carbonate content in stone flour is not less than 85%.
4. the preparation of ultra fine sand pump concrete according to claim 1, it is characterised in that：Special fine sand high-strength high-performance premixing
Concrete is prepared in strict accordance with match ratio, before concrete stirring production, should carry out check of zero to its automatic gauge facility,
Metering is using computerized control；
It is special that the transport of special fine sand high-strength high-performance concrete will carry out special train, in transit, mix cylinder and entered with 1~3r/min speed
Row stirring, to avoid high-strength concrete from isolating；Make to mix before trucd mixer discharging cylinder quickly stir 1 with 8~12r/min~
2min, make concrete stir after again discharging enter pump；The test of the slump is carried out before outbound preceding and pumping respectively, the slump
Loss should be not more than 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711191854.2A CN107814524A (en) | 2017-11-24 | 2017-11-24 | The preparation of ultra fine sand pump concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711191854.2A CN107814524A (en) | 2017-11-24 | 2017-11-24 | The preparation of ultra fine sand pump concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107814524A true CN107814524A (en) | 2018-03-20 |
Family
ID=61609994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711191854.2A Pending CN107814524A (en) | 2017-11-24 | 2017-11-24 | The preparation of ultra fine sand pump concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107814524A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109053090A (en) * | 2018-10-10 | 2018-12-21 | 宁夏亿丰砼业有限公司 | A kind of superfine sand concrete |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280628A (en) * | 2008-05-23 | 2008-10-08 | 中建五局第三建设有限公司 | Special fine sand high-strength high-performance concrete ultra-high pumping construction method |
| CN102241495A (en) * | 2011-06-01 | 2011-11-16 | 上海建工材料工程有限公司 | Ultrafine mixed sand concrete by using additive |
| CN102531435A (en) * | 2012-02-27 | 2012-07-04 | 无锡强世混凝土有限公司 | Super-fine sand blended fine aggregate for pump concrete |
-
2017
- 2017-11-24 CN CN201711191854.2A patent/CN107814524A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101280628A (en) * | 2008-05-23 | 2008-10-08 | 中建五局第三建设有限公司 | Special fine sand high-strength high-performance concrete ultra-high pumping construction method |
| CN102241495A (en) * | 2011-06-01 | 2011-11-16 | 上海建工材料工程有限公司 | Ultrafine mixed sand concrete by using additive |
| CN102531435A (en) * | 2012-02-27 | 2012-07-04 | 无锡强世混凝土有限公司 | Super-fine sand blended fine aggregate for pump concrete |
Non-Patent Citations (1)
| Title |
|---|
| 赵利春: "地下连续墙"冒泡"处理措施及原因分析", 《城市建筑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109053090A (en) * | 2018-10-10 | 2018-12-21 | 宁夏亿丰砼业有限公司 | A kind of superfine sand concrete |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180320 |
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| RJ01 | Rejection of invention patent application after publication |