CN110256021A - A kind of High Strength Pump Concrete based on Machine-made Sand - Google Patents
A kind of High Strength Pump Concrete based on Machine-made Sand Download PDFInfo
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- CN110256021A CN110256021A CN201910688118.0A CN201910688118A CN110256021A CN 110256021 A CN110256021 A CN 110256021A CN 201910688118 A CN201910688118 A CN 201910688118A CN 110256021 A CN110256021 A CN 110256021A
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- China
- Prior art keywords
- machine
- made sand
- high strength
- pump concrete
- strength pump
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Classifications
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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
- 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
- C04B28/02—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 containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
Abstract
The invention discloses a kind of High Strength Pump Concretes based on Machine-made Sand, which is characterized in that is made of materials described below and weight ratio: cement 450-470Kg/m3, flyash 60-80Kg/m3, high performance water reducing agent of polyocarboxy acid 5.0-6.0Kg/m3, Machine-made Sand 730-780Kg/m3, silicon powder 22-25Kg/m3, 5-16mm dimension crushed stone 450-470Kg/m3, 16-25mm dimension crushed stone 430-460Kg/m3, water 150-160Kg/m3, compared with prior art, have low water binder ratio, improve concrete self-strength；There is high fluidity simultaneously, be not susceptible to plugging phenomenon, while the gradual loss of the slump can be reduced.
Description
Technical field
The present invention relates to construction concrete field more particularly to a kind of High Strength Pump Concretes based on Machine-made Sand.
Background technique
In bridge construction, Long span high pier stud extra-large bridge construction is more and more, especially in Southwestern China region, across
The super-huge high pier stud bridge construction project of river span paddy is seen everywhere, and difficulty of construction is big for high pier stud, and intensity requirement is high, to construction material
Material requires height, especially concrete material, often uses pumping technology in the construction process, to its construction workability, intensity is resistance to
Long property is put forward higher requirements.Since sand maldistribution of the resources is even, natural sand does not enrich, and exhaustive exploitation leads to its resource increasingly
Exhaustion, configuring and using Machine-made Sand in High Strength Pump Concrete has been the trend that do not replace.Pass through controlling mechanism sand gradation, fineness
The technical indicators such as modulus, content of stone powder, the measures such as reasonably optimizing match ratio configure adaptable Machine-made Sand High strength pumping coagulation
Soil.The features such as due to Machine-made Sand content of stone powder height, large specific surface area, abundant corner angle, configuration High Strength Pump Concrete difficulty is big, mixes
The concrete flowability of conjunction, intensity, the technical indicators such as durability want inferior many for natural sand, pass through controlling mechanism
Sand Specifications, each material composition of optimization, configure the High Strength Pump Concrete based on Machine-made Sand, save the cost, raising is applied
Work efficiency rate, remarkable in economical benefits.
Summary of the invention
The purpose of the present invention is to solve the low water binder ratios that how to degrade, and improve mobility HE concrete pumping performance, together
When reduce the slump gradual loss the problem of, and propose a kind of High Strength Pump Concrete based on Machine-made Sand.
To achieve the goals above, present invention employs following technical solutions:
A kind of High Strength Pump Concrete based on Machine-made Sand, is made of materials described below and weight ratio: cement 450-470Kg/
m3, flyash 60-80Kg/m3, high performance water reducing agent of polyocarboxy acid 5.0-6.0Kg/m3, Machine-made Sand 730-780Kg/m3, silicon powder 22-
25Kg/m3, 5-16mm dimension crushed stone 450-470Kg/m3, 16-25mm dimension crushed stone 430-460Kg/m3, water 150-160Kg/m3。
Preferably, the cement uses P.O42.5 class g cement.
Preferably, cement-stabilized soil≤0.6%.
Preferably, the flyash use II grade of flyash, water demand ratio≤100%, fineness (45 μm of square hole screens)≤
23%.
Preferably, the Machine-made Sand uses the Machine-made Sand of fineness modulus 2.3-2.6.
Preferably, 0.15mm or less granule content 5%-8% in the Machine-made Sand.
Preferably, the water-reducing agent water-reducing rate is 20%-25%.
Preferably, rubble crush values≤15%, rubble flat-elongated particles content≤5%.
Preferably, silicon powder loss on ignition≤7%, fineness≤10%.
Compared with prior art, the present invention provides a kind of High Strength Pump Concrete based on Machine-made Sand, having following has
Beneficial effect:
Low water binder ratio improves concrete self-strength；There is high fluidity simultaneously, be not susceptible to plugging phenomenon, simultaneously
The gradual loss of the slump can be reduced.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.
Embodiment one
A kind of High Strength Pump Concrete based on Machine-made Sand, is made of materials described below and weight ratio: cement 450Kg/m3, powder
Coal ash 80Kg/m3, high performance water reducing agent of polyocarboxy acid 5.0Kg/m3, Machine-made Sand 780Kg/m3, silicon powder 25Kg/m3,5-16mm specification
Rubble 450Kg/m3,16-25mm dimension crushed stone 450Kg/m3, water 160Kg/m3.
Embodiment two
A kind of High Strength Pump Concrete based on Machine-made Sand, is made of materials described below and weight ratio: cement 470Kg/m3, powder
Coal ash 60Kg/m3, high performance water reducing agent of polyocarboxy acid 6.0Kg/m3, Machine-made Sand 730Kg/m3, silicon powder 22Kg/m3, 5-16mm specification is broken
Stone 470Kg/m3, 16-25mm dimension crushed stone 430Kg/m3, water 150Kg/m3。
Embodiment three
A kind of High Strength Pump Concrete based on Machine-made Sand, is made of materials described below and weight ratio: cement 460Kg/m3, powder
Coal ash 70Kg/m3, high performance water reducing agent of polyocarboxy acid 5.5Kg/m3, Machine-made Sand 765Kg/m3, silicon powder 23.5Kg/m3, 5-16mm specification
Rubble 460Kg/m3, 16-25mm dimension crushed stone 445Kg/m3, water 155Kg/m3。
Example IV
On the basis of the above embodiments, the cement uses P.O42.5 class g cement, cement-stabilized soil≤0.6%.
The flyash uses II grade of flyash, water demand ratio≤100%, fineness (45 μm of square hole screens)≤23%.
Embodiment five
On the basis of example IV, the Machine-made Sand uses the Machine-made Sand of fineness modulus 2.3-2.6, in the Machine-made Sand
0.15mm or less granule content 5%-8%, rubble crush values≤15%, rubble flat-elongated particles content≤5%, the silicon
Powder loss on ignition≤7%, fineness≤10%, the water-reducing agent water-reducing rate are 22%.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of High Strength Pump Concrete based on Machine-made Sand, which is characterized in that be made of materials described below and weight ratio: cement
450-470Kg/m3, flyash 60-80Kg/m3, high performance water reducing agent of polyocarboxy acid 5.0-6.0Kg/m3, Machine-made Sand 730-780Kg/
m3, silicon powder 22-25Kg/m3, 5-16mm dimension crushed stone 450-470Kg/m3, 16-25mm dimension crushed stone 430-460Kg/m3, water
150-160Kg/m3。
2. the High Strength Pump Concrete according to claim 1 based on Machine-made Sand, it is characterised in that: the cement uses
P.O42.5 class g cement.
3. the High Strength Pump Concrete according to claim 1 based on Machine-made Sand, it is characterised in that: the cement-stabilized soil
≤ 0.6%.
4. the High Strength Pump Concrete according to claim 1 based on Machine-made Sand, it is characterised in that: the flyash uses
II grade of flyash, water demand ratio≤100%, fineness (45 μm of square hole screens)≤23%.
5. the High Strength Pump Concrete according to claim 1 based on Machine-made Sand, it is characterised in that: the Machine-made Sand uses
The Machine-made Sand of fineness modulus 2.3-2.6.
6. the High Strength Pump Concrete according to claim 1 based on Machine-made Sand, it is characterised in that: in the Machine-made Sand
0.15mm or less granule content 5%-8%.
7. the High Strength Pump Concrete according to claim 1 based on Machine-made Sand, it is characterised in that: the water-reducing agent diminishing
Rate is 20%-25%.
8. the High Strength Pump Concrete according to claim 1 based on Machine-made Sand, it is characterised in that: the rubble crush values
≤ 15%, rubble flat-elongated particles content≤5%.
9. the High Strength Pump Concrete according to claim 1 based on Machine-made Sand, it is characterised in that: the silicon powder loss on ignition
≤ 7%, fineness≤10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910688118.0A CN110256021A (en) | 2019-07-29 | 2019-07-29 | A kind of High Strength Pump Concrete based on Machine-made Sand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910688118.0A CN110256021A (en) | 2019-07-29 | 2019-07-29 | A kind of High Strength Pump Concrete based on Machine-made Sand |
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| CN110256021A true CN110256021A (en) | 2019-09-20 |
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| CN201910688118.0A Pending CN110256021A (en) | 2019-07-29 | 2019-07-29 | A kind of High Strength Pump Concrete based on Machine-made Sand |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563413A (en) * | 2019-10-23 | 2019-12-13 | 中建西部建设贵州有限公司 | Low-grade machine-made sand concrete for downward pumping track and preparation method thereof |
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| CN101164959A (en) * | 2007-09-25 | 2008-04-23 | 贵州省桥梁工程总公司 | Long pumping distance machine-made sand concrete |
| CN101922236A (en) * | 2010-07-21 | 2010-12-22 | 中铁二十局集团第四工程有限公司 | The C50 made sand ultra-high pump concrete construction method |
| CN104150840A (en) * | 2014-08-19 | 2014-11-19 | 华润水泥技术研发（广西）有限公司 | C60 full-manufactured sand super high-rise pump concrete |
| AU2018101200A4 (en) * | 2018-08-19 | 2018-09-20 | Rodricks, Peter Anil MR | Production of environmentally sustainable bricks & blocks and plaster for construction from coastal desert sands and fly ash |
| CN109592949A (en) * | 2019-02-18 | 2019-04-09 | 陕西宏基混凝土构件有限责任公司 | Meet the concrete and its pumping method of super high pump-conveying |
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2019
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| CN101164959A (en) * | 2007-09-25 | 2008-04-23 | 贵州省桥梁工程总公司 | Long pumping distance machine-made sand concrete |
| CN101922236A (en) * | 2010-07-21 | 2010-12-22 | 中铁二十局集团第四工程有限公司 | The C50 made sand ultra-high pump concrete construction method |
| CN104150840A (en) * | 2014-08-19 | 2014-11-19 | 华润水泥技术研发（广西）有限公司 | C60 full-manufactured sand super high-rise pump concrete |
| AU2018101200A4 (en) * | 2018-08-19 | 2018-09-20 | Rodricks, Peter Anil MR | Production of environmentally sustainable bricks & blocks and plaster for construction from coastal desert sands and fly ash |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110563413A (en) * | 2019-10-23 | 2019-12-13 | 中建西部建设贵州有限公司 | Low-grade machine-made sand concrete for downward pumping track and preparation method thereof |
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Application publication date: 20190920 |