CN108840630A - high performance concrete - Google Patents
high performance concrete Download PDFInfo
- Publication number
- CN108840630A CN108840630A CN201810901295.8A CN201810901295A CN108840630A CN 108840630 A CN108840630 A CN 108840630A CN 201810901295 A CN201810901295 A CN 201810901295A CN 108840630 A CN108840630 A CN 108840630A
- Authority
- CN
- China
- Prior art keywords
- high performance
- performance concrete
- cement
- sand
- water
- 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
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/146—Silica fume
-
- 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The present invention provides a kind of high performance concretes, with kg/m3Meter, including：520~560 cementitious material, 160~170 water, 650~750 sand, 950~1050 stone；Wherein, the cementitious material includes 15%~20% flyash, 25%~35% miberal powder, 2%~12% silicon ash and the cement of surplus；Further include：The additive of the binder total amount 1.0~1.2% is accounted for, the additive is selected from ethers polycarboxylic acid water reducing agent.For the present invention by addition ethers polycarboxylic acid water reducing agent and silicon ash, the concrete for greatly reducing cement consumption and admixture total amount, and obtaining has good intensity and a mobility, good durability and higher workability and volume stability.
Description
Technical field
The invention belongs to technical field of concrete more particularly to a kind of high performance concretes.
Background technique
Concrete is that the general designation of the cementing integral engineered composite material of aggregate is widely used in building by cementitious material
Engineering.
Currently, since water-cement ratio is low, cement consumption is big, and uses water when preparing C80 or more large fluidity high performance concrete
Amount is few, and obtained concrete cohesiveness is big, brings certain difficulty to construction and pumping, generally requires to improve for reduction viscosity and use
Water has to improve the dosage of admixture total amount for the identical ratio of mud of guarantee.Since cement consumption is big, not only increase
The folk prescription cost of concrete, and cause concrete contraction percentage big, the heat of hydration is excessively high, the bad phenomenons such as easy to crack.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of high performance concrete, admixture dosage is lower, pump-conveying property
Good and intensity is higher.
The present invention provides a kind of high performance concretes, with kg/m3Meter, including：520~560 cementitious material, 160~
170 water, 650~750 sand, 950~1050 stone；
Wherein, the cementitious material includes 15%~20% flyash, 25%~35% miberal powder, 2%~12%
The cement of silicon ash and surplus；
Further include：The additive of the binder total amount 1.0~1.2% is accounted for, the additive is selected from ethers polycarboxylic acids
Water-reducing agent.
Ethers polycarboxylic admixture is added in the present invention on the basis of traditional high performance concrete, and adds in cementitious material
Enter 8~12% silicon ash, silicon ash can fill the hole of biggish cement granules relatively, reduce the volume of hole, make concrete
It is more closely knit, greatly improve the long property of need of concrete.After silicon ash is added in concrete, meets water section little particle and dissolves rapidly,
Sio in solution2Adhesive layer is formed in silicon powder particle surface with the gel of poor Ca, ultimately generates the Ca of hydrated cementitious generation
(OH), to generate C-S-H gel, the intensity of concrete is greatly improved.In addition, ethers additive has, diffusivity is good, gassiness
Low advantage is measured, the concrete flowability made is big.The experimental results showed that concrete provided by the invention has good stream
Dynamic property and intensity.
In one embodiment, the cement is selected from P.O42.5 and/or P.O52.5 class g cement.
In one embodiment, the dosage of the cement is with kg/m3It is calculated as 200~300.
In one embodiment, the flyash is selected from I grades of flyash of power plant F class, and loss on ignition is less than 5%.
In one embodiment, the miberal powder is selected from S105 grades of miberal powders, and specific surface area is greater than 550m2/kg。
In one embodiment, the specific surface area of the silicon ash is greater than 20000m2/kg。
In one embodiment, the sand is selected from II area's river sand, 2.6 or more fineness modulus, clay content≤2.0, cement block
Content≤1.0.
In one embodiment, the partial size of the rubble is 5~31.5mm, crush values≤10%.
In one embodiment, the water-reducing rate of the ethers polycarboxylic acid water reducing agent is greater than 35%.
A kind of concrete provided by the invention, with kg/m3Meter, including：
270 cement；
688 sand；
1032 stone；
160 water；
78 flyash；
130 miberal powder；
42 silicon ash；
5.7 additive.
Another kind concrete provided by the invention, with kg/m3Meter, including：
207 cement；
718 sand；
992 stone；
170 water；
112 flyash；
196 miberal powder；
45 silicon ash；
6.2 additive.
The present invention greatly reduces cement consumption and admixture total amount by addition ethers polycarboxylic acid water reducing agent and silicon ash,
And obtained concrete has good intensity and mobility, good durability and higher workability and volume stability.
Specific embodiment
Embodiment 1
Proportion：
Cement：Sand：Stone：Water：Flyash：Miberal powder：Silicon ash：Additive=270:688:1032:160:78:130:42：
5.7(kg/m3)；
Cement, sand, stone, water, flyash, miberal powder, silicon ash and additive are mixed, concrete is obtained；Wherein, cement is adopted
With ordinary portland cement, P.O42.5；Flyash uses I grades of flyash of power plant F class, and loss on ignition is less than 5%；Miberal powder is S105
Grade miberal powder, specific surface area are greater than 550m2/kg；Silicon ash is that specific surface area is greater than 20000m2The silicon ash of/kg；Sand uses II area's river sand,
2.6 or more fineness modulus, clay content≤2.0, cement block content≤1.0；The partial size of rubble be 5mm~31.5mm, crush values≤
10%；Water-reducing agent is ethers polycarboxylic acid water reducing agent, and water-reducing rate is greater than 35%；Water is underground water.
Obtained concrete is at 30 DEG C, and without significantly sacrificing, and pump-conveying property is preferable within 3.5 hours, and the rewinding time is less than
20S, slump 240mm, divergence 620mm, 3 days intensity are 32.0MPa, and 7 days intensity is 54.4MPa, 28 days intensity
For 86.0MPa, 60 days intensity is 102.3MPa.
Embodiment 2
Proportion：
Cement：Sand：Stone：Water：Flyash：Miberal powder：Silicon ash：Additive=207:718:992:170:112:196:45：
6.2(kg/m3)；
Cement, sand, stone, water, flyash, miberal powder, silicon ash and additive are mixed, concrete is obtained；Wherein, cement is adopted
With ordinary portland cement, P.O42.5；Flyash uses I grades of flyash of power plant F class, and loss on ignition is less than 5%；Miberal powder is S105
Grade miberal powder, specific surface area are greater than 550m2/kg；Silicon ash is that specific surface area is greater than 20000m2The silicon ash of/kg；Sand uses II area's river sand,
2.6 or more fineness modulus, clay content≤2.0, cement block content≤1.0；The partial size of rubble be 5mm~31.5mm, crush values≤
10%；Water-reducing agent is ethers polycarboxylic acid water reducing agent, and water-reducing rate is greater than 35%；Water is underground water.
Obtained concrete is at 30 DEG C, and without significantly sacrificing, and pump-conveying property is preferable within 4 hours, and the rewinding time is 18S, collapses
Degree of falling is 245mm, and divergence 600mm, 3 days intensity is 28.0MPa, and intensity is 48.6MPa within 7 days, and intensity is within 28 days
80.0MPa, 60 days intensity are 92.5MPa.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of high performance concrete, which is characterized in that with kg/m3Meter, including：520~560 cementitious material, 160~170
Water, 650~750 sand, 950~1050 stone；
Wherein, the cementitious material include 15%~20% flyash, 25%~35% miberal powder, 2%~12% silicon ash
With the cement of surplus；
Further include：
The additive of the binder total amount 1.0~1.2% is accounted for, the additive is selected from ethers polycarboxylic acid water reducing agent.
2. high performance concrete according to claim 1, which is characterized in that the cement be selected from P.O42.5 and/or
P.O52.5 class g cement.
3. high performance concrete according to claim 1, special medical treatment are, the flyash is selected from I grades of fine coal of power plant F class
Ash, loss on ignition is less than 5%.
4. high performance concrete according to claim 1, which is characterized in that the miberal powder is selected from S105 grades of miberal powders, compares table
Area is greater than 550m2/kg。
5. high performance concrete according to claim 1, which is characterized in that the specific surface area of the silicon ash is greater than
20000m2/kg。
6. high performance concrete according to claim 1, which is characterized in that the sand is selected from II area's river sand, fineness modulus
2.6 or more, clay content≤2.0, cement block content≤1.0.
7. high performance concrete according to claim 1, which is characterized in that the partial size of the rubble is 5~31.5mm, pressure
Broken value≤10%.
8. high performance concrete according to claim 1, which is characterized in that the water-reducing rate of the ethers polycarboxylic acid water reducing agent
Greater than 35%.
9. high performance concrete described in any one according to claim 1~8, which is characterized in that with kg/m3Meter, including：
270 cement；
688 sand；
1032 stone；
160 water；
78 flyash；
130 miberal powder；
42 silicon ash；
5.7 additive.
10. high performance concrete described in any one according to claim 1~8, which is characterized in that with kg/m3Meter, including：
207 cement；
718 sand；
992 stone；
170 water；
112 flyash；
196 miberal powder；
45 silicon ash；
6.2 additive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810901295.8A CN108840630B (en) | 2018-08-09 | 2018-08-09 | High-performance concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810901295.8A CN108840630B (en) | 2018-08-09 | 2018-08-09 | High-performance concrete |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108840630A true CN108840630A (en) | 2018-11-20 |
| CN108840630B CN108840630B (en) | 2020-12-11 |
Family
ID=64195493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810901295.8A Active CN108840630B (en) | 2018-08-09 | 2018-08-09 | High-performance concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108840630B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002820A (en) * | 2019-04-16 | 2019-07-12 | 郑州鑫基商品混凝土有限公司 | A kind of high performance concrete and preparation method thereof |
| CN114427180A (en) * | 2020-10-29 | 2022-05-03 | 四川国兴腾隆科技有限公司 | Sleeper repairing process |
Citations (4)
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|---|---|---|---|---|
| CN102503262A (en) * | 2011-10-19 | 2012-06-20 | 合肥天柱包河特种混凝土有限公司 | Self-compacting concrete and design method of mixing proportion thereof |
| KR20140010018A (en) * | 2010-12-17 | 2014-01-23 | 더 카톨릭 유니버시티 오브 아메리카 | Geopolymer composite for ultra high performance concrete |
| CN103708781A (en) * | 2013-12-20 | 2014-04-09 | 亚泰集团沈阳建材有限公司 | Low-chloride ion high-performance concrete |
| CN105503059A (en) * | 2015-12-11 | 2016-04-20 | 宁夏盛远新型建材有限责任公司 | High performance concrete |
-
2018
- 2018-08-09 CN CN201810901295.8A patent/CN108840630B/en active Active
Patent Citations (4)
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| KR20140010018A (en) * | 2010-12-17 | 2014-01-23 | 더 카톨릭 유니버시티 오브 아메리카 | Geopolymer composite for ultra high performance concrete |
| CN102503262A (en) * | 2011-10-19 | 2012-06-20 | 合肥天柱包河特种混凝土有限公司 | Self-compacting concrete and design method of mixing proportion thereof |
| CN103708781A (en) * | 2013-12-20 | 2014-04-09 | 亚泰集团沈阳建材有限公司 | Low-chloride ion high-performance concrete |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110002820A (en) * | 2019-04-16 | 2019-07-12 | 郑州鑫基商品混凝土有限公司 | A kind of high performance concrete and preparation method thereof |
| CN114427180A (en) * | 2020-10-29 | 2022-05-03 | 四川国兴腾隆科技有限公司 | Sleeper repairing process |
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| Publication number | Publication date |
|---|---|
| CN108840630B (en) | 2020-12-11 |
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