CN108147746A - A kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping - Google Patents
A kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping Download PDFInfo
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- CN108147746A CN108147746A CN201711478855.5A CN201711478855A CN108147746A CN 108147746 A CN108147746 A CN 108147746A CN 201711478855 A CN201711478855 A CN 201711478855A CN 108147746 A CN108147746 A CN 108147746A
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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
-
- 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
- C04B2111/00017—Aspects relating to the protection of the environment
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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
- 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
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping, the super high strength concrete includes folk prescription dosage (kg/m3) cement 380 480, spherical volcano grey matter cementitious material 100 200, granulated bf slag 80 160, siliceous volcanic ash cementitious material 40 60, Machine-made Sand 560 750, rubble 900 1200, additive 16 25 and water 125 150.Super high strength concrete of the present invention is using Machine-made Sand as fine aggregate, and do not mix fiber-like enhancing material, it is made using conventional GPC material, 28d compression strength has reached C120 strength grades, and slump is more than 260mm, divergence is more than 680mm, the rewinding time is less than 3s, disclosure satisfy that the requirement of high-rise building pumping construction, has strength grade height, viscosity is low, the advantages of being easy to carry out super high-rise pumping.
Description
Technical field
The present invention relates to building materials concrete fields, specifically provide a kind of Machine-made Sand C120 for being easy to super high-rise pumping
Super high strength concrete.
Background technology
With the continuous intensification of economic globalization, China starts the upsurge of skyscraper construction, and many cities are by Super High
Building can carry out the preparation of the super high strength concrete of super high-rise pumping as Name card of city, city terrestrial reference, the symbol of urban development
Become the hot spot of Concrete Industry concern with pumping technology.
In order to meet high request of the building trade to construction material, some ultra-high performance concretes are developed, specifically
Application Chinese patent has：Number of patent application 201310670490.1《Low viscosity, the mean intensity 120MPa superelevation easily pumped are strong
Concrete》, number of patent application 200810022642.6《Super high strength concrete with super high pump-conveying property and preparation method thereof》,
Number of patent application 201710210738.4《A kind of decoration ultra-high performance concrete for being easy to pumping》, number of patent application
201410253540.0《A kind of C120 super high strength concretes for being easy to super high-rise pumping》, number of patent application 201610904702.1
《A kind of Machine-made Sand C120 steel fibre pump concretes and preparation method thereof》, it is strong or high-strength that these technical solutions both provide superelevation
The preparation method of concrete.But 201310670490.1,200810022642.6,201710210738.4 and of patent
201410253540.0 concrete as fine aggregate, obtain excellent pumping construction performance using natural sand, but due to
National natural sand maldistribution of the resources and due to exhaustive exploitation resource worsening shortages, application region is by sand resource constraint；Patent
200710201841.9《Long pumping distance machine-made sand concrete》It is mixed although being prepared with patent 201610904702.1 using full Machine-made Sand
Solidifying soil, the Concrete Pumping Construction is functional, but patent 200710201841.9 is not belonging to ultra-high performance concrete field,
Patent 201610904702.1 improves concrete strength using fiber-like enhancing material, is only applicable to fiber-like concrete construction, should
With narrow scope, of high cost.
Machine-made Sand is to be sieved by the carbonate rock for removing soil exploitation through Mechanical Crushing, for polygon, surface shape
Looks are coarse, and bottom powder content is more, and compared with natural sand, prepared concrete water demand rate is high, easily isolation, aid pumpability is poor.With
The increasingly consumption of natural sand resource, Machine-made Sand replace natural sand to have become certainty as the trend of concrete fine aggregate, but by
In the Machine-made Sand appeal itself the problem of, the application in the ultra-high performance concrete field of super high-rise pumping is seldom, the prior art
Majority is limited using fiber-like reinforcing material and unconventional cementitious material, application range by raw material, and economy is also bad, because
This, needs to continue to develop energy using mechanism sand and conventional concrete cementitious material, develops and be adapted to being easy to for special building needs
The Machine-made Sand C120 super high strength concretes of super high-rise pumping.
Invention content
The technical problem to be solved by the present invention is to：Design a kind of strong coagulation of Machine-made Sand C120 superelevation for being easy to super high-rise pumping
Soil replaces natural sand as fine aggregate using Machine-made Sand, and without using fiber-like enhancing material, selection is with Machine-made Sand with suitable routine
Gel rubber material, to solve the problems, such as that the prior art uses natural sand as raw material natural sand shortage of resources, to solve the prior art
By Machine-made Sand polygon, surface topography is coarse and bottom powder content influence more concrete water demand rate be configured it is high, easily isolation,
Aid pumpability is poor, and the requirement of ultra-high performance concrete is not achieved in strength grade so that the problem of application range is limited.
The technical scheme is that：A kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping, the coagulation
The ingredient and formula of soil are as follows：
Preferably, the cement uses 52.5 cement of P.O, 28d compression strength >=56MPa.
Preferably, the spherical volcano grey matter cementitious material is one kind in F classes II grade of flyash, microballon and floating bead, than
Surface area >=1500m2/kg。
Preferably, the granulated bf slag is included in S95 grades of miberal powders, S105 grades of miberal powders, super finely ground slag and L70 grades of phosphorus slag powders
One or two, SiO2、Al2O3With CaO total content >=85%, specific surface area is 450~800m2/kg。
Preferably, the siliceous volcanic ash cementitious material includes one or both of common silicon ash, encryption silicon ash, compares table
Area >=20000m2/ kg, SiO2Content >=85%.
Preferably, the Machine-made Sand is one kind in limestone machine-made sand, basalt Machine-made Sand and diabase Machine-made Sand, carefully
Degree modulus be 2.8-3.0, bottom powder content≤4%, MB value≤1.2.MB values are sub- blue value, represent that the clay content in Machine-made Sand is big
It is small.
Preferably, the rubble is one kind in limestone gravel, basaltic broken stone and diabase gravel, grain size 5-
20mm, clay content≤1.2%.
Preferably, the additive be viscosity reduction type polycarboxylic acids compound additive, water-reducing rate >=34%.
The principle of the present invention is：By preferred bottom powder content≤4%, the Machine-made Sand of MB≤1.2, obtain fresh concrete
It good workability, later stage mechanical property while reduces concrete contraction percentage and the adverse effects such as becomes larger；In cementitious material, with micro-
Pearl can reduce water adsorption for the spherical volcano grey matter cementitious material of representative, working performance of concrete be increased substantially, with ore deposit
Powder can make up the problem of flyash is low in aquation early activity, and early strength is low for the granulated bf slag of representative, using silicon ash as
The siliceous cementitious material represented gap, performance filing effect can discharge the freedom between cement particle between filling concrete particle
Hydrone, while its pozzolanic activity is higher, concrete strength is promoted significantly, and additive used is the poly- carboxylic of viscosity reduction type in the present invention
Sour additive, it is more than 34% to have viscosity reduction, diminishing, guarantor composite effects, the water-reducing rate such as collapse.The present invention is contained by Machine-made Sand bottom powder
The technologies such as amount, the control of MB values, the compound diminishing effect of mineral admixture, additive complex, are effectively improved Machine-made Sand granular-grade itself
Match, the problem of concrete mix workability caused by pattern is poor, can prepare that working performance is good, 28d intensity reaches
C120 grades and durability reach the ultra-high performance concrete of relevant national standard, suitable for super high-rise pumping.
The present invention has the advantages that：With prior art ratio,
1st, super high strength concrete of the present invention is prepared using full Machine-made Sand, can effectively be alleviated the prior art and be used naturally
Sand, but natural sand resource worsening shortages problem；
2nd, the present invention passes through Machine-made Sand bottom powder content, the control of MB values, the compound diminishing effect of mineral admixture, additive complex
Etc. technologies improve the coarse inherent shortcoming of Machine-made Sand disproportionately graded, surface topography, solve the preparation of prior art employment mechanism sand
The problem of concrete isolates more, aid pumpability is poor；
3rd, super high strength concrete of the present invention is prepared using full Machine-made Sand, and without using fiber-like enhancing material, 28d intensity
More than 130MPa, strength grade has reached C120 grades, solves the prior art and limits concrete using fiber-like enhancing material
Application field the problem of；
Specific embodiment
It is further below in conjunction with specific embodiment for present disclosure, technical solution and advantage is more clearly understood
Illustrate the present invention, these embodiments are merely to illustrate the present invention, and the present invention is not limited only to following embodiment.
Embodiment 1：
A kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping, the folk prescription consumption proportion and property of the concrete
It can be as follows：
The Machine-made Sand be basalt Machine-made Sand, fineness modulus 2.8, bottom powder content 4%, MB values 0.8.MB values are sub- blue
Value represents the clay content size in Machine-made Sand.It is 5-20mm that the rubble, which is limestone gravel grain size, clay content 1.1%.It is described
Additive be viscosity reduction type polycarboxylic acids compound additive, water-reducing rate 35%.
Preparation method：Using conventional preparation method of concrete, limestone gravel, basalt Machine-made Sand are put into concrete
Blender adds in the water wet-mixing 30-40s of half, and cement, mineral admixture then be put into agitated kettle, wet-mixing 30-40s, finally
Additive is dissolved in remaining half water and adds in agitated kettle, stirring 6-9min can obtain the Machine-made Sand C120 very-high performances
Concrete.
Prepared concrete NDT performance is：Slump 280mm, divergence 680mm, rewinding time 3.0s, 3d resistance to compression
Intensity 80.5MPa, 7d compression strength 111.5MPa, 28d compression strength 136.7MPa.Strength grade reaches C120 grades and durable
Property reaches the super high strength concrete of relevant national standard, suitable for super high-rise pumping.
Embodiment 2：
A kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping, the folk prescription consumption proportion and property of the concrete
It can be as follows：
The Machine-made Sand is that limestone machine-made sand fineness modulus is 2.9, bottom powder content 3%, MB values 1.0.MB values are sub- blue
Value represents the clay content size in Machine-made Sand.The rubble be limestone gravel, grain size 5-20mm, clay content 0.8%.Institute
Additive is stated as viscosity reduction type polycarboxylic acids compound additive, water-reducing rate 35%.
Preparation method：Using conventional preparation method of concrete, limestone gravel, limestone machine-made sand are put into concrete
Blender adds in the water wet-mixing 30-40s of half, and cement, mineral admixture then be put into agitated kettle, wet-mixing 30-40s, finally
Additive is dissolved in remaining half water and adds in agitated kettle, stirring 6-9min can obtain the Machine-made Sand C120 very-high performances
Concrete.
Prepared concrete NDT performance is：Slump 275mm, divergence 710mm, rewinding time 2.5s, 3d resistance to compression
Intensity 85MPa, 7d compression strength 121.3MPa, 28d compression strength 138.6MPa.Strength grade reaches C120 grades and durability
Reach the super high strength concrete of relevant national standard, suitable for super high-rise pumping.
Embodiment 3：
A kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping, the folk prescription consumption proportion and property of the concrete
It can be as follows：
The Machine-made Sand is that limestone machine-made sand fineness modulus is 3.0, bottom powder content 4%, MB values 1.0.MB values are sub- blue
Value represents the clay content size in Machine-made Sand.The rubble be diabase gravel, grain size 5-20mm, clay content 1.0%.Institute
Additive is stated as viscosity reduction type polycarboxylic acids compound additive, water-reducing rate 35%.
Preparation method：Using conventional preparation method of concrete, diabase gravel, limestone machine-made sand are put into concrete
Blender adds in the water wet-mixing 30-40s of half, and cement, mineral admixture then be put into agitated kettle, wet-mixing 30-40s, finally
Additive is dissolved in remaining half water and adds in agitated kettle, stirring 6-9min can obtain the Machine-made Sand C120 very-high performances
Concrete.
Prepared concrete NDT performance is：Slump 275mm, divergence 720mm, rewinding time 2.8s, 3d resistance to compression
Intensity 88MPa, 7d compression strength 124.5MPa, 28d compression strength 137.8MPa.Strength grade reaches C120 grades and durability
Reach the super high strength concrete of relevant national standard, suitable for super high-rise pumping：
Compare the performance of 201410253540.0 natural sand of number of patent application：
Prepared concrete NDT performance is：Slump 270mm, divergence 700mm, rewinding time 6s, 3d pressure resistance
Spend 83.1MPa, 7d compression strength 118.3MPa, 28d compression strength 133.6MPa.
It can be seen that：The raw material Machine-made Sand of the Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping of the present invention
It is easily obtained, and its working performance and mechanical property are superior to use natural sand.
Claims (8)
1. a kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping, it is characterised in that：The ingredient of the concrete and
Formula is as follows：
2. a kind of Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping described in accordance with the claim 1, feature exist
In the cement uses 52.5 cement of P.O, 28d compression strength >=56MPa.
3. according to the Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping a kind of described in claim 1, which is characterized in that
The spherical volcano grey matter cementitious material be F classes II grade of flyash, microballon and floating bead in one kind, specific surface area >=1500m2/
kg。
4. according to the Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping a kind of described in claim 1, which is characterized in that
The granulated bf slag includes one or both of S95 grades of miberal powders, S105 grades of miberal powders, super finely ground slag and L70 grades of phosphorus slag powders,
SiO2、Al2O3With CaO total content >=85%, specific surface area is 450~800m2/kg。
5. according to the Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping a kind of described in claim 1, which is characterized in that
The siliceous volcanic ash cementitious material includes one or both of common silicon ash, encryption silicon ash, specific surface area >=20000m2/
Kg, SiO2Content >=85%.
6. according to the Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping a kind of described in claim 1, which is characterized in that
The Machine-made Sand be limestone machine-made sand, basalt Machine-made Sand and diabase Machine-made Sand in one kind, fineness modulus 2.8-
3.0, bottom powder content≤4%, MB value≤1.2.
7. according to the Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping a kind of described in claim 1, which is characterized in that
The rubble be limestone gravel, basaltic broken stone and diabase gravel in one kind, grain size 5-20mm, clay content≤
1.2%.
8. according to the Machine-made Sand C120 super high strength concretes for being easy to super high-rise pumping a kind of described in claim 1, which is characterized in that
The additive be viscosity reduction type polycarboxylic acids compound additive, water-reducing rate >=34%.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109095833A (en) * | 2018-07-26 | 2018-12-28 | 中国建筑第八工程局有限公司 | High-performance trass concrete for highlands super high-rise pumping |
| CN109400021A (en) * | 2018-11-13 | 2019-03-01 | 江苏省安捷岩土工程有限公司 | A kind of lower shrinkage low viscosity super high strength concrete |
| CN110342875A (en) * | 2019-07-12 | 2019-10-18 | 江苏澄筑建筑科技有限公司 | A kind of spary coating type very-high performance decorative coagulation soil material and preparation method thereof |
| CN110746159A (en) * | 2019-11-11 | 2020-02-04 | 十九冶成都建设有限公司 | Anti-crack pumping concrete and preparation method and pumping method thereof |
| CN111187040A (en) * | 2020-01-08 | 2020-05-22 | 湖州三中混凝土有限公司 | Machine-made sand self-compacting concrete and preparation method thereof |
| CN111285648A (en) * | 2020-02-20 | 2020-06-16 | 中交上海三航科学研究院有限公司 | High-durability low-viscosity high-strength machine-made sand concrete, preparation method and application |
| CN111333383A (en) * | 2020-02-18 | 2020-06-26 | 中建西部建设湖南有限公司 | Extra-coarse machine-made sand super-high layer pumping high-strength concrete |
| CN113968703A (en) * | 2021-10-28 | 2022-01-25 | 明阳智慧能源集团股份公司 | Offshore wind power floating type foundation C115-C140 ultrahigh-performance self-compacting concrete |
| WO2022088624A1 (en) * | 2020-10-30 | 2022-05-05 | 贵州成智重工科技有限公司 | Green machine-made aggregate ordinary ultra-high-performance concrete |
| CN115611595A (en) * | 2022-11-14 | 2023-01-17 | 中铁建大桥工程局集团第四工程有限公司 | Ultrahigh pumping low-shrinkage creep C50 concrete with solid waste and large-mixing-amount full-mechanism aggregate |
| CN115716731A (en) * | 2022-11-14 | 2023-02-28 | 中铁建大桥工程局集团第四工程有限公司 | Low-shrinkage creep mechanism sandstone aggregate C55 concrete suitable for ultrahigh pumping |
| CN115849794A (en) * | 2022-12-01 | 2023-03-28 | 中建八局第四建设有限公司 | Low-cost coarse aggregate UHPC and production facility thereof |
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Cited By (16)
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|---|---|---|---|---|
| CN109095833B (en) * | 2018-07-26 | 2021-09-21 | 中国建筑第八工程局有限公司 | High-performance volcanic ash concrete for pumping super high-rise layers in plateau areas |
| CN109095833A (en) * | 2018-07-26 | 2018-12-28 | 中国建筑第八工程局有限公司 | High-performance trass concrete for highlands super high-rise pumping |
| CN109400021A (en) * | 2018-11-13 | 2019-03-01 | 江苏省安捷岩土工程有限公司 | A kind of lower shrinkage low viscosity super high strength concrete |
| CN110342875A (en) * | 2019-07-12 | 2019-10-18 | 江苏澄筑建筑科技有限公司 | A kind of spary coating type very-high performance decorative coagulation soil material and preparation method thereof |
| CN110342875B (en) * | 2019-07-12 | 2021-11-05 | 江苏澄筑建筑科技有限公司 | Spray-type ultrahigh-performance decorative concrete material and preparation method thereof |
| CN110746159A (en) * | 2019-11-11 | 2020-02-04 | 十九冶成都建设有限公司 | Anti-crack pumping concrete and preparation method and pumping method thereof |
| CN111187040A (en) * | 2020-01-08 | 2020-05-22 | 湖州三中混凝土有限公司 | Machine-made sand self-compacting concrete and preparation method thereof |
| CN111333383A (en) * | 2020-02-18 | 2020-06-26 | 中建西部建设湖南有限公司 | Extra-coarse machine-made sand super-high layer pumping high-strength concrete |
| CN111285648A (en) * | 2020-02-20 | 2020-06-16 | 中交上海三航科学研究院有限公司 | High-durability low-viscosity high-strength machine-made sand concrete, preparation method and application |
| WO2022088624A1 (en) * | 2020-10-30 | 2022-05-05 | 贵州成智重工科技有限公司 | Green machine-made aggregate ordinary ultra-high-performance concrete |
| CN113968703A (en) * | 2021-10-28 | 2022-01-25 | 明阳智慧能源集团股份公司 | Offshore wind power floating type foundation C115-C140 ultrahigh-performance self-compacting concrete |
| CN115611595A (en) * | 2022-11-14 | 2023-01-17 | 中铁建大桥工程局集团第四工程有限公司 | Ultrahigh pumping low-shrinkage creep C50 concrete with solid waste and large-mixing-amount full-mechanism aggregate |
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| CN115716731B (en) * | 2022-11-14 | 2023-11-17 | 中铁建大桥工程局集团第四工程有限公司 | Low-shrinkage creep mechanism sandstone aggregate C55 concrete suitable for ultrahigh pumping |
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Application publication date: 20180612 |