CN103030349A - Sulfate corrosion-resistant concrete and production method thereof - Google Patents
Sulfate corrosion-resistant concrete and production method thereof Download PDFInfo
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- CN103030349A CN103030349A CN2013100041967A CN201310004196A CN103030349A CN 103030349 A CN103030349 A CN 103030349A CN 2013100041967 A CN2013100041967 A CN 2013100041967A CN 201310004196 A CN201310004196 A CN 201310004196A CN 103030349 A CN103030349 A CN 103030349A
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- concrete
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- resisting erosion
- water reducer
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Abstract
The invention relates to novel sulfate corrosion-resistant concrete. The sulfate corrosion-resistant concrete comprises the following components according to cubic amount kg/m<3>: 360-450 kg/m<3> of cement, 50-100 kg/m<3> of slag powder, 50-100 kg/m<3> of coal ash, 30-50 kg/m<3> of stone powder, 690-760 kg/m<3> of fine aggregate, 1000-1080 kg/m<3> of coarse aggregate, 3.0-4.2 kg/m<3> of water reducing agent and 140-160 kg/m<3> of water. After 150 times of wet and dry cycles, the compressive strength and the corrosion-resistant coefficient of the sulfate corrosion-resistant concrete are more than 90% and the appearance of the sulfate corrosion-resistant concrete has no significant change; and working requirements on the production process, long-time transportation, and pumping of premixed concrete and the like can be met.
Description
Technical field
The present invention relates to material of construction, specially refer to a kind of resisting erosion of sulfate concrete.
Background technology
In affecting the factor of concrete durability, sulphate attack destroys the concern that more has been subject to the concrete technology worker, is considered to one of four large principal elements that cause the concrete material failure damage.Sulphate attack also is that influence factor is the most complicated, and a kind of ambient water of hazardness maximum corrodes.Sulfate ion in the environment infiltrates inside concrete and reacts with hydrated product, produces phenomenons such as expanding, ftracture, peel off, thereby so that concrete strength and viscosity reduce and forfeiture.How preventing and alleviating vitriol is an important content of concrete durability research to concrete erosion damage always.
Summary of the invention
The object of the invention is to overcome the existing concrete deficiency of resisting erosion of sulfate, a kind of novel resisting erosion of sulfate concrete and production method thereof are provided.Resisting erosion of sulfate concrete of the present invention is after 150 drying and watering cycles of experience, the anti-corrosion coefficient of concrete ultimate compression strength is more than 90%, concrete appearance can satisfy again production technique and the long-time transportation of present ready mixed concrete simultaneously without considerable change, satisfies the workability requirements such as pumping.
In order to reach the foregoing invention purpose, technical scheme provided by the invention is as follows:
A kind of resisting erosion of sulfate concrete is characterized in that, this concrete includes following composition:
Component cube consumption kg/m
3
Cement 360～450
Slag powders 50～100
Flyash 50～100
Stone flour 30～50
Fine aggregate 690～760
Coarse aggregate 1000～1080
Water reducer 3.0～4.2
Water 140～160;
Described stone flour be fineness less than 0.15mm, its main chemical compositions is calcium carbonate.
The effect of stone flour in concrete is mainly: (1) stone flour is on the impact of workability of concrete: not only can not hinder the combination of cement and aggregate, can fill up on the contrary the space between the aggregate, concrete water-retentivity and cohesiveness have been improved to a certain extent, improved the segregation excreting water phenomenon, vibrate so that concrete is easy to moulding, improved workability of concrete.These act in the lower intensity level concrete obvious especially, the contradiction of the excessive and workability of Strength surplus between poor when having solved well the preparation low-strength concrete.(2) stone flour is on the impact of mechanical performance of concrete: stone flour can more obviously improve concrete pore character, improve slurry-aggregate Interface structure, and the concrete crystalline phase has change in various degree.(3) stone flour is on the impact of concrete durability: an amount of stone flour can make machine-made sand concrete have good cohesiveness and water-retentivity, improved the segregation excreting water phenomenon, stone flour has been filled the space at interface, make water mudrock structure and interface structure more fine and close, blocked the infiltration path that may form, concrete impermeability is improved.By above some as can be known, stone flour can improve workability of concrete, improve concrete strength, improve the advantage such as concrete permeability resistance, so also played the effect of certain resisting erosion of sulfate.
In the resisting erosion of sulfate concrete of the present invention, it is the P.O42.5 ordinary Portland cement that described cement adopts strength grade.
In the resisting erosion of sulfate concrete of the present invention, described slag powders is the S95 slag powders.
In the resisting erosion of sulfate concrete of the present invention, described flyash is II level ash.
In the resisting erosion of sulfate concrete of the present invention, fine aggregate described in the resisting erosion of sulfate concrete of the present invention adopt fineness modulus greater than 2.4, silt content less than 1.0%, clod content is less than 0.5% nature medium sand.
Coarse aggregate described in the resisting erosion of sulfate concrete of the present invention adopts particle diameter less than the rubble of 25mm.
Water reducer described in the resisting erosion of sulfate concrete of the present invention is admixture, and described water reducer is poly carboxylic acid series water reducer, produces by Mace is special, and model is the product of SP8.Described accelerating chemicals is produced by Mace is special, and model is the product of POZZUTEC20+.
The concrete method of resisting erosion of sulfate of the present invention is characterized in that the method comprises the steps:
The first step drops into coarse aggregate and fine aggregate in the stirrer, stirs for 10 seconds;
Then second step drops into cement, breeze, flyash and stone flour, 10 seconds of restir;
The 3rd step, water reducer is dropped in the water, after the 20th second, begin to add 60% of the water gross weight that contains water reducer;
The 4th step, continue to stir for 10 seconds after, drop into again 40% of the water gross weight that contains water reducer in the stirrer;
In the 5th step, after feeding intake fully, in 30 seconds of restir, altogether stir discharging in 60 seconds.
Based on technique scheme, resisting erosion of sulfate concrete of the present invention and production method thereof have following technological merit than prior art:
1. resisting erosion of sulfate concrete of the present invention is after 150 drying and watering cycles of experience, the anti-corrosion coefficient of concrete ultimate compression strength is more than 90%, concrete appearance can satisfy again production technique and the long-time transportation of present ready mixed concrete simultaneously without considerable change, satisfies the workability requirements such as pumping.
2. use stone flour as suppressing concrete by the material of sulphate attack among the present invention, stone flour originally is the tankage of producing stone, and itself is valueless, so can reduce the concrete holistic cost price of resisting erosion of sulfate, has certain economic benefit.
3. resisting erosion of sulfate concrete production preparation of the present invention is simple, but the equal investment and production of general concrete manufacturing enterprise is simple efficient.
4. using stone flour among the present invention originally is solid waste, uses it in the present invention Concrete Resist Reinforcing Sulfate Corrosion, and energy-saving and emission-reduction have certain social benefit.
Embodiment
Below we come in conjunction with specific embodiments resisting erosion of sulfate concrete of the present invention and preparation method thereof done further and elaborate; its one-tenth is grouped into and concrete the application in the hope of understand more cheer and brightly, but can not limit protection scope of the present invention with this.
The present invention establishes and creatively makes a kind of resisting erosion of sulfate concrete, and this concrete includes following composition:
Component cube consumption kg/m
3
Cement 360～450
Slag powders 50～100
Flyash 50～100
Stone flour 30～50
Fine aggregate 690～760
Coarse aggregate 1000～1080
Water reducer 3.0～4.2
Water 140～160;
Wherein, described stone flour be fineness less than 0.15mm, its main chemical compositions is calcium carbonate.The effect of stone flour in concrete is mainly: (1) stone flour is on the impact of workability of concrete: stone flour not only can not hinder the combination of cement and aggregate in concrete of the present invention, can also fill up on the contrary the space between the aggregate, concrete water-retentivity and cohesiveness have been improved to a certain extent, improved the segregation excreting water phenomenon, vibrate so that concrete is easy to moulding, improved workability of concrete.Above-mentioned these act in the lower intensity level concrete obvious especially, the contradiction of the excessive and workability of Strength surplus between poor when having solved well the preparation low-strength concrete.
(2) stone flour is on the impact of mechanical performance of concrete: stone flour can more obviously improve concrete pore character, improve the interface structure of starching-gathering materials, and the concrete crystalline phase has change in various degree.
(3) stone flour is on the impact of concrete durability: an amount of stone flour can make machine-made sand concrete have good cohesiveness and water-retentivity, improved the segregation excreting water phenomenon, stone flour has been filled the space at interface, make water mudrock structure and interface structure more fine and close, blocked the infiltration path that may form, concrete impermeability is improved.
By above some as can be known, the stone flour that increases in the concrete of the present invention can improve workability of concrete, improve concrete strength, improve the advantage such as concrete permeability resistance, so can play the effect of resisting erosion of sulfate.
In the resisting erosion of sulfate concrete of the present invention, it is the P.O42.5 ordinary Portland cement that described cement adopts strength grade.Described slag powders is the S95 slag powders.Described flyash is II level ash.Fine aggregate described in the resisting erosion of sulfate concrete of the present invention adopt fineness modulus greater than 2.4, silt content less than 1.0%, clod content is less than 0.5% nature medium sand.Coarse aggregate adopts particle diameter less than the rubble of 25mm.Described water reducer is admixture, and described water reducer is poly carboxylic acid series water reducer, produces by Mace is special, and model is the product of SP8.Described accelerating chemicals is produced by Mace is special, and model is the product of POZZUTEC20+.
Embodiment 1
Include following composition in the present embodiment in the resisting erosion of sulfate concrete:
Component cube consumption kg/m
3
Cement 360
Slag powders 50
Flyash 50
Stone flour 30
Fine aggregate 690
Coarse aggregate 1000
Water reducer 3.0
Water 140
It is the P.O42.5 ordinary Portland cement that above-mentioned cement adopts strength grade, slag powders is the S95 slag powders, described flyash is II level ash, fine aggregate adopt fineness modulus greater than 2.4, silt content less than 1.0%, clod content is less than 0.5% nature medium sand, coarse aggregate adopts particle diameter less than the rubble of 25mm.Described water reducer is admixture, and water reducer is poly carboxylic acid series water reducer, produces by Mace is special, and model is the product of SP8, and accelerating chemicals is produced by Mace is special, and model is the product of POZZUTEC20+.
Described stone flour be fineness less than 0.15mm, its main chemical compositions is calcium carbonate.Stone flour can improve the advantages such as workability of concrete, raising concrete strength, raising concrete permeability resistance, so also played the effect of certain resisting erosion of sulfate.
With respect to normal concrete, the ability of the concrete opposing sulphate attack of resisting erosion of sulfate has increased 120% in the present embodiment.
Embodiment 2
Resisting erosion of sulfate concrete in the present embodiment includes following composition:
Component cube consumption kg/m
3
Cement 400
Slag powders 80
Flyash 80
Stone flour 40
Fine aggregate 760
Coarse aggregate 1080
Water reducer 3.5
Water 160;
Stone flour be fineness less than 0.15mm, its main chemical compositions is calcium carbonate.
It is the P.O42.5 ordinary Portland cement that above-mentioned cement adopts strength grade, slag powders is the S95 slag powders, described flyash is II level ash, fine aggregate adopt fineness modulus greater than 2.4, silt content less than 1.0%, clod content is less than 0.5% nature medium sand, coarse aggregate adopts particle diameter less than the rubble of 25mm.Described water reducer is admixture, and water reducer is poly carboxylic acid series water reducer, produces by Mace is special, and model is the product of SP8, and accelerating chemicals is produced by Mace is special, and model is the product of POZZUTEC20+.
With respect to normal concrete, the ability of the concrete opposing sulphate attack of resisting erosion of sulfate has increased 130% in the present embodiment.
Embodiment 3
Resisting erosion of sulfate concrete in the present embodiment includes following composition:
Component cube consumption kg/m
3
Cement 450
Slag powders 100
Flyash 100
Stone flour 50
Fine aggregate 760
Coarse aggregate 1080
Water reducer 4.0
Water 160;
Stone flour be fineness less than 0.15mm, its main chemical compositions is calcium carbonate.
It is the P.O42.5 ordinary Portland cement that above-mentioned cement adopts strength grade, slag powders is the S95 slag powders, described flyash is II level ash, fine aggregate adopt fineness modulus greater than 2.4, silt content less than 1.0%, clod content is less than 0.5% nature medium sand, coarse aggregate adopts particle diameter less than the rubble of 25mm.Described water reducer is admixture, and water reducer is poly carboxylic acid series water reducer, produces by Mace is special, and model is the product of SP8, and accelerating chemicals is produced by Mace is special, and model is the product of POZZUTEC20+.
With respect to normal concrete, the ability of the concrete opposing sulphate attack of resisting erosion of sulfate has increased 150% in the present embodiment.
The concrete method of resisting erosion of sulfate of the present invention, the method comprises the steps:
The first step drops into coarse aggregate and fine aggregate in the stirrer, stirs 10s;
Then second step drops into cement, breeze, flyash and stone flour, stirs 10s;
The 3rd step, water reducer is dropped in the water, behind 20s, begin to add 60% the water that contains water reducer;
The 4th step, continue to stir 10s after, drop into 40% water that contains water reducer in the stirrer;
In the 5th step, after feeding intake fully, restir 30s stirs the 60s discharging altogether.
Resisting erosion of sulfate concrete of the present invention is after 150 drying and watering cycles of experience, and the anti-corrosion coefficient of concrete ultimate compression strength is more than 90%.Concrete appearance can satisfy again production technique and the long-time transportation of present ready mixed concrete simultaneously without considerable change, satisfies the workability requirements such as pumping.
Claims (8)
1. novel resisting erosion of sulfate concrete is characterized in that this concrete includes following composition:
Component cube consumption kg/m
3
Cement 360～450
Slag powders 50～100
Flyash 50～100
Stone flour 30～50
Fine aggregate 690～760
Coarse aggregate 1000～1080
Water reducer 3.0～4.2
Water 140～160;
The fineness of described stone flour is less than 0.075mm, and its main chemical compositions is calcium carbonate.
2. a kind of resisting erosion of sulfate concrete according to claim 1 is characterized in that, it is the P.O42.5 ordinary Portland cement that described cement adopts strength grade.
3. a kind of resisting erosion of sulfate concrete according to claim 1 is characterized in that, described slag powders is the S95 slag powders.
4. a kind of resisting erosion of sulfate concrete according to claim 1 is characterized in that, described flyash is II level ash.
5. a kind of resisting erosion of sulfate concrete according to claim 1 is characterized in that, described fine aggregate adopt fineness modulus greater than 2.4, silt content less than 1.0%, clod content is less than 0.5% nature medium sand.
6. a kind of resisting erosion of sulfate concrete according to claim 1 is characterized in that, described coarse aggregate adopts particle diameter less than the rubble of 25mm.
7. a kind of resisting erosion of sulfate concrete according to claim 1, it is characterized in that, described water reducer is admixture, described water reducer is poly carboxylic acid series water reducer, produce by Mace is special, model is the product of SP8, and described accelerating chemicals is produced by Mace is special, and model is the product of POZZUTEC20+.
8. the concrete method of the described resisting erosion of sulfate of production claim 1 is characterized in that the method comprises the steps:
The first step drops into coarse aggregate and fine aggregate in the stirrer, stirs for 10 seconds;
Then second step drops into cement, breeze, flyash and stone flour, 10 seconds of restir;
The 3rd step, water reducer is dropped in the water, after the 20th second, begin to add 60% of the water gross weight that contains water reducer;
The 4th step, continue to stir for 10 seconds after, drop into again 40% of the water gross weight that contains water reducer in the stirrer;
In the 5th step, after feeding intake fully, in 30 seconds of restir, altogether stir discharging in 60 seconds.
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| CN2013100041967A CN103030349A (en) | 2013-01-07 | 2013-01-07 | Sulfate corrosion-resistant concrete and production method thereof |
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| CN2013100041967A CN103030349A (en) | 2013-01-07 | 2013-01-07 | Sulfate corrosion-resistant concrete and production method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446194A (en) * | 2014-11-18 | 2015-03-25 | 王文明 | Novel concrete highly resistant to sulfate attack as well as preparation method and application of novel concrete |
| CN105884300A (en) * | 2016-04-13 | 2016-08-24 | 中建商品混凝土西安有限公司 | C30 self-compacting concrete capable of being pumped for super-large height larger than 620 meters and preparation method of concrete |
| CN106565164A (en) * | 2015-10-09 | 2017-04-19 | 中建西部建设股份有限公司 | Modified high-sulfate-resistant corrosion-resistant concrete |
| CN106747125A (en) * | 2017-02-20 | 2017-05-31 | 内蒙古科技大学 | A kind of concrete of anti-sulfur dioxide corrosion |
| CN106747126A (en) * | 2017-02-20 | 2017-05-31 | 内蒙古科技大学 | A kind of slag concrete of anti-sulfur dioxide corrosion |
| CN106810166A (en) * | 2017-02-20 | 2017-06-09 | 内蒙古科技大学 | A kind of flyash concrete of anti-sulfur dioxide corrosion |
| CN107651896A (en) * | 2017-10-13 | 2018-02-02 | 河南省三门峡黄河大桥高速公路建设有限公司 | Chemical resistance of concrete high durability concrete and preparation method thereof |
| CN110563399A (en) * | 2019-10-15 | 2019-12-13 | 巴州鼎力杆塔有限公司 | sulfate erosion resistant concrete |
| CN110668749A (en) * | 2019-09-25 | 2020-01-10 | 中建西部建设北方有限公司 | Sulfate corrosion resistant concrete |
| CN110922125A (en) * | 2019-11-18 | 2020-03-27 | 北京太平洋水泥制品有限公司 | Sulfate erosion resistant concrete and preparation method thereof |
| CN112358253A (en) * | 2020-09-25 | 2021-02-12 | 桐乡市钟大建材有限公司 | Special anti-corrosion concrete for building and production system thereof |
| CN115849815A (en) * | 2022-12-05 | 2023-03-28 | 苏州上建杭鑫混凝土有限公司 | High-impermeability and high-durability concrete for underground structure |
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| CN101274829A (en) * | 2008-05-08 | 2008-10-01 | 同济大学 | High-early-strength high-slump-retaining shrinkage-compensating self-compaction C60 concrete |
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2013
- 2013-01-07 CN CN2013100041967A patent/CN103030349A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274829A (en) * | 2008-05-08 | 2008-10-01 | 同济大学 | High-early-strength high-slump-retaining shrinkage-compensating self-compaction C60 concrete |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104446194A (en) * | 2014-11-18 | 2015-03-25 | 王文明 | Novel concrete highly resistant to sulfate attack as well as preparation method and application of novel concrete |
| CN106565164A (en) * | 2015-10-09 | 2017-04-19 | 中建西部建设股份有限公司 | Modified high-sulfate-resistant corrosion-resistant concrete |
| CN105884300A (en) * | 2016-04-13 | 2016-08-24 | 中建商品混凝土西安有限公司 | C30 self-compacting concrete capable of being pumped for super-large height larger than 620 meters and preparation method of concrete |
| CN105884300B (en) * | 2016-04-13 | 2018-02-06 | 中建商品混凝土西安有限公司 | A kind of C30 self-compacting concretes for being capable of 620 meters of super high pump-conveyings and preparation method thereof |
| CN106747125A (en) * | 2017-02-20 | 2017-05-31 | 内蒙古科技大学 | A kind of concrete of anti-sulfur dioxide corrosion |
| CN106747126A (en) * | 2017-02-20 | 2017-05-31 | 内蒙古科技大学 | A kind of slag concrete of anti-sulfur dioxide corrosion |
| CN106810166A (en) * | 2017-02-20 | 2017-06-09 | 内蒙古科技大学 | A kind of flyash concrete of anti-sulfur dioxide corrosion |
| CN107651896B (en) * | 2017-10-13 | 2020-12-18 | 衢州虎山混凝土有限公司 | Chemical-erosion-resistant high-durability concrete and preparation method thereof |
| CN107651896A (en) * | 2017-10-13 | 2018-02-02 | 河南省三门峡黄河大桥高速公路建设有限公司 | Chemical resistance of concrete high durability concrete and preparation method thereof |
| CN110668749A (en) * | 2019-09-25 | 2020-01-10 | 中建西部建设北方有限公司 | Sulfate corrosion resistant concrete |
| CN110668749B (en) * | 2019-09-25 | 2021-10-29 | 中建西部建设北方有限公司 | Sulfate corrosion resistant concrete |
| CN110563399A (en) * | 2019-10-15 | 2019-12-13 | 巴州鼎力杆塔有限公司 | sulfate erosion resistant concrete |
| CN110922125A (en) * | 2019-11-18 | 2020-03-27 | 北京太平洋水泥制品有限公司 | Sulfate erosion resistant concrete and preparation method thereof |
| CN110922125B (en) * | 2019-11-18 | 2021-12-21 | 北京太平洋水泥制品有限公司 | Sulfate erosion resistant concrete and preparation method thereof |
| CN112358253A (en) * | 2020-09-25 | 2021-02-12 | 桐乡市钟大建材有限公司 | Special anti-corrosion concrete for building and production system thereof |
| CN112358253B (en) * | 2020-09-25 | 2022-05-17 | 桐乡市钟大建材有限公司 | Special anti-corrosion concrete for building and production system thereof |
| CN115849815A (en) * | 2022-12-05 | 2023-03-28 | 苏州上建杭鑫混凝土有限公司 | High-impermeability and high-durability concrete for underground structure |
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Application publication date: 20130410 |