CN105693157A - High-performance marine concrete - Google Patents
High-performance marine concrete Download PDFInfo
- Publication number
- CN105693157A CN105693157A CN201610170471.6A CN201610170471A CN105693157A CN 105693157 A CN105693157 A CN 105693157A CN 201610170471 A CN201610170471 A CN 201610170471A CN 105693157 A CN105693157 A CN 105693157A
- Authority
- CN
- China
- Prior art keywords
- concrete
- marine concrete
- performance marine
- concrete according
- coarse sand
- 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.)
- Pending
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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
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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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/06—Quartz; Sand
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/24—Sea water resistance
-
- 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
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/26—Corrosion of reinforcement resistance
-
- 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
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
Abstract
The application discloses high-performance marine concrete, which is prepared from the following materials in parts by mass: 35 to 50 parts of cement, 9 to 15 parts of medium-coarse sand, 10 to 11 parts of gravel, 35 to 50 parts of admixture and 2 to 5 parts of additive. The concrete provided by the invention is low in apparent density, strong in corrosion resistance and good in stability; lots of the medium-coarse sand and the gravel are adopted; the apparent density of a concrete product is decreased; the high-performance marine concrete is applicable to severe environments of a maritime environment and the like.
Description
Technical field
The disclosure relates generally to building material field, particularly relates to a kind of high-performance marine concrete。
Background technology
The principal element affecting concrete durability concentrates on 4 aspects, namely steel bar corrosion (including chlorine salt corrosion, protective layer neutralization, stray current corrosion), unfreezing, salt corrosion, alkali-aggregate reaction。Under marine environment, concrete structure is chronically at bar in chlorine salt solution, and economic loss and harm that the steel bar corrosion that Chloride Attack causes causes destroying concrete structure and causes occupy the first。Under normal circumstances, reinforcing bar is not corroded in passive state in concrete high alkali environment。It is in the xoncrete structure under marine environment; rebar surface is arrived owing to a large amount of chloride ion invade inside concrete; destroy the passivating film of rebar surface; make protected reinforcing bar too corroded; corrosion product volumetric expansion makes concrete cover spalling even come off, the safety of serious threat concrete structure and usability。On the other hand, concrete itself is also had destruction by villaumite。When drying and watering cycle, the crystallization of villaumite can make concrete produce substantial amounts of crack。In northern area, villaumite and freeze thawing combined effect, accelerate concrete damage。Therefore in the urgent need to developing the maritime concrete of performance height, life-span length。
Summary of the invention
In view of drawbacks described above of the prior art or deficiency, it is desirable to provide a kind of high-performance marine concrete, including the material of following mass fraction:
Cement: 35-50,
Medium coarse sand: 9-15,
Rubble: 10-11,
Admixture: 35-50,
Additive: 2-5。
Advantages of the present invention is as follows:
The concrete apparent density of the present invention is low, corrosion resistance is strong, stablize, have employed substantial amounts of medium coarse sand and rubble, reduces the apparent density of concrete product, it is adaptable to the adverse circumstances such as sea。
Detailed description of the invention
Below in conjunction with embodiment, the application is described in further detail。It is understood that specific embodiment described herein is used only for explaining related invention, but not the restriction to this invention。
It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined。The application is described in detail below with reference to embodiment。
Embodiment 1
The first step: measure raw material according to following mass fraction:
Cement: 35,
Medium coarse sand: 9,
Rubble: 10,
Blast-furnace cinder: 20,
Coal ash: 13,
Silicon ash: 2,
Reinforcing steel bar corrosion inhibitor: 1.5,
Water reducer: 0.5；
Second step: put into, after being taken out by medium coarse sand, the dirt washing away surface in water, takes out the medium coarse sand cleaned up, and places cool place place 20min, dries moisture；
3rd step: take out whole cement, puts in blender and is stirred, and puts into clean medium coarse sand stirring 3min, makes cement and medium coarse sand be sufficiently mixed；
4th: continue in blender, add rubble, blast-furnace cinder, coal ash, silicon ash, stir the mixture for uniformly；
5th step: continue to add reinforcing steel bar corrosion inhibitor in blender, and add a small amount of water, make concrete mix homogeneously, stir to gel；
6th step: continue to add water reducer in blender, stir 1min, make high-performance marine concrete。
Wherein, the water-reducing rate of water reducer is more than 25%, and ballast grain sizes is less than 22mm。
Embodiment 2
The first step: measure raw material according to following mass fraction:
Cement: 50,
Medium coarse sand: 15,
Rubble: 11,
Blast-furnace cinder: 26,
Coal ash: 19,
Silicon ash: 5,
Reinforcing steel bar corrosion inhibitor: 3,
Water reducer: 2；
Second step: put into, after being taken out by medium coarse sand, the dirt washing away surface in water, takes out the medium coarse sand cleaned up, and places cool place place 20min, dries moisture；
3rd step: take out whole cement, puts in blender and is stirred, and puts into clean medium coarse sand stirring 3min, makes cement and medium coarse sand be sufficiently mixed；
4th: continue in blender, add rubble, blast-furnace cinder, coal ash, silicon ash, stir the mixture for uniformly；
5th step: continue to add reinforcing steel bar corrosion inhibitor in blender, and add a small amount of water, make concrete mix homogeneously, stir to gel；
6th step: continue to add water reducer in blender, stir 1min, make high-performance marine concrete。
Wherein, the water-reducing rate of water reducer is more than 25%, and ballast grain sizes is less than 22mm。
Embodiment 3
The first step: measure raw material according to following mass fraction:
Cement: 40,
Medium coarse sand: 13,
Rubble: 10,
Blast-furnace cinder: 23,
Coal ash: 16,
Silicon ash: 3,
Reinforcing steel bar corrosion inhibitor: 2,
Water reducer: 1.5；
Second step: put into, after being taken out by medium coarse sand, the dirt washing away surface in water, takes out the medium coarse sand cleaned up, and places cool place place 20min, dries moisture；
3rd step: take out whole cement, puts in blender and is stirred, and puts into clean medium coarse sand stirring 3min, makes cement and medium coarse sand be sufficiently mixed；
4th: continue in blender, add rubble, blast-furnace cinder, coal ash, silicon ash, stir the mixture for uniformly；
5th step: continue to add reinforcing steel bar corrosion inhibitor in blender, and add a small amount of water, make concrete mix homogeneously, stir to gel；
6th step: continue to add water reducer in blender, stir 1min, make high-performance marine concrete。
Wherein, the water-reducing rate of water reducer is more than 25%, and ballast grain sizes is less than 22mm。
By the mixture of embodiment 1,2,3 is tested。Obtain following experimental result:
High-performance marine concrete apparent density is less than 1500Kg/m3, it is particularly well-suited to the working environment at sea。Concrete bulk strength is high, adopts the mixing of medium coarse sand and rubble to gather materials, improves concrete configuration state。The reinforcing bar corrosion resistance inserted in concrete is high, by adding reinforcing steel bar corrosion inhibitor in concrete, improves the corrosion resistance of reinforcing bar。Concrete moisture content less, by the interaction of each component and addition water reducer, reduces concrete water content, when making concrete finished product, it is possible to hardly with adding water, improve stability and the durability of concrete product。
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle。Skilled artisan would appreciate that, invention scope involved in the application, it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, when also should be encompassed in without departing from described inventive concept simultaneously, other technical scheme being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed。Such as features described above and (but not limited to) disclosed herein have the technical characteristic of similar functions and replace mutually and the technical scheme that formed。
Claims (8)
1. a high-performance marine concrete, it is characterised in that include the material of following mass fraction:
Cement: 35-50,
Medium coarse sand: 9-15,
Rubble: 10-11,
Admixture: 35-50,
Additive: 2-5。
2. high-performance marine concrete according to claim 1, it is characterised in that described admixture is the mixture of blast-furnace cinder, coal ash and silicon ash。
3. high-performance marine concrete according to claim 2, it is characterised in that the mass fraction of each component of described admixture is as follows:
Blast-furnace cinder: 20-26,
Coal ash: 13-19,
Silicon ash: 2-5。
4. high-performance marine concrete according to claim 1, it is characterised in that described additive is reinforcing steel bar corrosion inhibitor and water reducer。
5. high-performance marine concrete according to claim 4, it is characterised in that described water reducer is Amino-sulfonic Acid-based Water-reducer。
6. high-performance marine concrete according to claim 4, it is characterised in that the mass fraction of each component of described additive is as follows:
Reinforcing steel bar corrosion inhibitor: 1.5-3,
Water reducer: 0.5-2。
7. high-performance marine concrete according to claim 4, it is characterised in that the water-reducing rate of described water reducer is more than 25%。
8. high-performance marine concrete according to claim 1, it is characterised in that described ballast grain sizes is less than 22mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170471.6A CN105693157A (en) | 2016-03-23 | 2016-03-23 | High-performance marine concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610170471.6A CN105693157A (en) | 2016-03-23 | 2016-03-23 | High-performance marine concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105693157A true CN105693157A (en) | 2016-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610170471.6A Pending CN105693157A (en) | 2016-03-23 | 2016-03-23 | High-performance marine concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105693157A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341604A (en) * | 2018-02-07 | 2018-07-31 | 中国地质大学（武汉） | A kind of mineral base maritime concrete preservative and its preparation and application |
| CN114477894A (en) * | 2021-12-30 | 2022-05-13 | 广西壮族自治区水利科学研究院 | Marine concrete for inhibiting barnacle adhesion and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412146A (en) * | 2001-10-16 | 2003-04-23 | 同济大学 | Mixed high-performance light concrete and its production process |
| CN104803645A (en) * | 2015-04-22 | 2015-07-29 | 江苏名和集团有限公司 | High-strength light-weight concrete and preparation method thereof |
-
2016
- 2016-03-23 CN CN201610170471.6A patent/CN105693157A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1412146A (en) * | 2001-10-16 | 2003-04-23 | 同济大学 | Mixed high-performance light concrete and its production process |
| CN104803645A (en) * | 2015-04-22 | 2015-07-29 | 江苏名和集团有限公司 | High-strength light-weight concrete and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 祈景玉等: "高性能轻混凝土的耐久性研究", 《新型建筑材料》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108341604A (en) * | 2018-02-07 | 2018-07-31 | 中国地质大学（武汉） | A kind of mineral base maritime concrete preservative and its preparation and application |
| CN108341604B (en) * | 2018-02-07 | 2019-09-17 | 中国地质大学（武汉） | A kind of mineral base maritime concrete preservative and its preparation and application |
| CN114477894A (en) * | 2021-12-30 | 2022-05-13 | 广西壮族自治区水利科学研究院 | Marine concrete for inhibiting barnacle adhesion and preparation method thereof |
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Application publication date: 20160622 |