CN109574595A - A kind of C40 grades of freeze thawing resistance steel slag permeable concrete - Google Patents
A kind of C40 grades of freeze thawing resistance steel slag permeable concrete Download PDFInfo
- Publication number
- CN109574595A CN109574595A CN201910044534.7A CN201910044534A CN109574595A CN 109574595 A CN109574595 A CN 109574595A CN 201910044534 A CN201910044534 A CN 201910044534A CN 109574595 A CN109574595 A CN 109574595A
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- CN
- China
- Prior art keywords
- steel slag
- grades
- freeze thawing
- water
- thawing resistance
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- 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)
- Road Paving Structures (AREA)
Abstract
The invention discloses a kind of C40 grades of freeze thawing resistance steel slag permeable concrete, the component including following mass ratio, cement: slag as aggregate: water: water-reducing agent=(430-550): (1500-2000): (109-176): (2-12.5)；The ratio of mud of the concrete is 0.26-0.32；Water-reducing agent volume is the 0.5%-2% of cement quality.28 days compression strength of C40 grades of freeze thawing resistance steel slag permeable concrete provided by the invention is greater than 40MPa, and flexural strength is greater than 5MPa, and freeze-thaw resistance is able to satisfy D50, has the characteristics that high-intensitive, freeze thawing resistance.
Description
Technical field
The present invention relates to a kind of C40 grades of freeze thawing resistance steel slag permeable concretes, belong to the technical field of concrete of civil engineering.
Background technique
With the fast development of the size of population and economic construction, demand of the mankind to living space also increasingly increases.And it mixes
Solidifying soil is largely used in urban construction, brings serious destruction to earth environment for the survival of mankind.To consider that nature is raw
State protection, walks Sustainable Development Road, and sponge urban construction is carried out in China energetically, injects new vitality to city.Wherein, permeable
For concrete as a kind of Eco-friendly concrete, having improves ecological environment of soil under urban surface, protects urban groundwater
Resource is largely used in sponge urban construction the characteristics of adjusting city temperature and humidity and mitigate the urban waterlogging that heavy rain generates.But
It is pervious concrete compared to normal concrete, with porosity and permeability, therefore its intensity is generally relatively low, existing research
In, pervious concrete intensity is generally between 10-30MPa, and freeze-thaw resistance is poor, is not suitable for the environment of north alternate freezing and thawing.
China is a resource-type big country, and a large amount of industrial solid-state castoff, steel slag can be generated in steel industry.Mesh
Before, it is domestic extremely low for the recycling rate of waterused of steel slag, it is handled in most cases using the method for throwing aside accumulation.If can incite somebody to action
For the aggregate in pervious concrete, this not only turns waste into wealth steel slag steel slag, reduces the exploitation of nature aggregate, significantly protection ring
Border, moreover it is possible to Sustainable Development Road is walked in actively construction sponge city, and steel slag aggregate has economy compared to general aggregate,
It is wear-resisting, the features such as compactness is high.Therefore, steel slag is applied in pervious concrete and meets contemporary society's requirement, money can be saved
Source mitigates environmental pressure, and can build green city, walks Sustainable Development Road.
Summary of the invention
Purpose: in order to overcome the deficiencies in the prior art, it is permeable mixed that the present invention provides a kind of C40 grades of freeze thawing resistance steel slag
Solidifying soil, pervious concrete provided by the invention use steel slag as aggregate, can reach high-intensitive, freeze thawing resistance, meet permeable mixed
Porosity, infiltration coefficient and the construction etc. of solidifying soil surface require, the pervious concrete cell road suitable for sponge urban construction
The municipal works such as road, non-motor vehicle road, parking lot are particularly suitable for northern freezing-thawing area.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of C40 grades of freeze thawing resistance steel slag permeable concrete, the component including following mass ratio,
Cement: slag as aggregate: water: water-reducing agent=(430-550): (1500-2000): (109-176): (2-12.5).It is described
The mix-design of C40 grades of freeze thawing resistance steel slag permeable concretes is designed using volumetric method.
The cement is any one of PO52.5, PO42.5 or both mixture.
The slag as aggregate is single gradation, and steel slag aggregate size is 4-6mm or 6-8mm or 9.5-16mm.Work as progress
Steel slag aggregate size is 4mm-6mm or 6mm-8mm when surface layer designs；Carrying out steel slag aggregate size when structure sheaf design is 9.5mm-
16mm.It is " wear-resisting that the parameters such as apparent density, crush values, water imbibition, robustness and the free calcium oxide of steel slag aggregate should meet specification
Bituminous pavement steel slag " relevant regulations in (GB/T 24765-2009), preferably select ageing 4 years or more steel slags.Steel slag bone
The cubic unit volume of material is 0.96-0.99 times of its bulk density, and designs porosity control in 10%-15%, to guarantee steel
The high intensity of slag pervious concrete.
The ratio of mud of steel slag permeable concrete is 0.26-0.32.
The water-reducing agent be with retarding performance, bleed performance, water retention property high-efficiency water-reducing agent of poly-carboxylic acid, water-reducing rate is big
In or be equal to 25%, volume be cement quality 0.5%-2%.
The utility model has the advantages that 28 days compression strength of (1) steel slag permeable concrete provided by the invention is greater than 40MPa, flexural strength
Greater than 5 MPa, freeze-thaw resistance is able to satisfy D50, meets " urban road design criterion " (CJJ37-2016) and " permeable cement coagulation
Soil surface technical regulation " (CJJ/T 135-2009), have the characteristics that high-intensitive, freeze thawing resistance；
(2) pervious concrete cell road of the steel slag permeable concrete provided by the invention suitable for sponge urban construction, non-
The municipal works such as motor road, parking lot are particularly suitable for the freezing-thawing area in the north；
(3) steel slag permeable concrete provided by the invention may advantageously facilitate the sustainable development of resource-environment, fundamentally solve
China's exhaust gas steel slag there are the problem of, optimization china natural resources utilize structure, promote Chinese society economy and environmental development.
Specific embodiment
The present invention will be further explained combined with specific embodiments below.
Embodiment 1
A kind of C40 grades of freeze thawing resistance steel slag permeable concrete, the component including following mass ratio,
Cement: slag as aggregate: water: water-reducing agent=496:1744:148.8:10.4.
The cement uses 42.5 portland cement of PO of saddle lance asiabell root group production；
The slag as aggregate is the industrial solid castoff that steel mill generates in steelmaking process, apparent density 3150kg/
m3, bulk density 1780kg/m3, crush values 3.2%, 1 hour water absorption rate is 1.8%, and free calcium oxide content is 1%, steel slag
Partial size selects 9.5-16mm；
The water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid, and water-reducing rate is greater than 25%.
C40 grades of freeze thawing resistance steel slag permeable concretes obtained are matched according to the component that embodiment 1 provides, compression strength is
43.2MPa, flexural strength are 7.4 MPa, and porosity reaches 11.5%, freeze-thaw resistance D100.
Embodiment 2
A kind of C40 grades of freeze thawing resistance steel slag permeable concrete, the component including following mass ratio,
Cement: slag as aggregate: water: water-reducing agent=460:1762:124.2:7.
The cement uses 42.5 portland cement of PO of saddle lance asiabell root group production；
The slag as aggregate is the industrial solid castoff that steel mill generates in steelmaking process, apparent density 3150kg/
m3, bulk density 1780kg/m3, crush values 3.2%, 1 hour water absorption rate is 1.8%, and free calcium oxide content is 1%, steel slag
Partial size selects 9.5-16mm；
The water-reducing agent is high-efficiency water-reducing agent of poly-carboxylic acid, and water-reducing rate is greater than 25%.
C40 grades of freeze thawing resistance steel slag permeable concretes obtained are matched according to the component that embodiment 2 provides, compression strength is
40.6MPa, flexural strength are 6.2 MPa, and porosity reaches 13.3%, freeze-thaw resistance D75.
The above is only a preferred embodiment of the present invention, it should be pointed out 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 (6)
1. a kind of C40 grades of freeze thawing resistance steel slag permeable concrete, it is characterised in that: the component including following mass ratio,
Cement: slag as aggregate: water: water-reducing agent=(430-550): (1500-2000): (109-176): (2-12.5).
2. C40 grades of freeze thawing resistance steel slag permeable concrete according to claim 1, it is characterised in that: the cement is P
Any one of O52.5, PO42.5 or both mixture.
3. C40 grades of freeze thawing resistance steel slag permeable concrete according to claim 1, it is characterised in that: the slag as aggregate is
Single gradation, steel slag aggregate size are 4-6mm or 6-8mm or 9.5-16mm.
4. C40 grades of freeze thawing resistance steel slag permeable concrete according to claim 1 or 3, it is characterised in that: the slag as aggregate
For ageing 4 years or more steel slags.
5. C40 grades of freeze thawing resistance steel slag permeable concrete according to claim 1, it is characterised in that: the ratio of mud in concrete
For 0.26-0.32.
6. C40 grades of freeze thawing resistance steel slag permeable concrete according to claim 1, it is characterised in that: the water-reducing agent is poly-
Carboxylic acid high efficiency water reducing agent, water-reducing agent volume are the 0.5%-2% of cement quality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044534.7A CN109574595A (en) | 2019-01-17 | 2019-01-17 | A kind of C40 grades of freeze thawing resistance steel slag permeable concrete |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910044534.7A CN109574595A (en) | 2019-01-17 | 2019-01-17 | A kind of C40 grades of freeze thawing resistance steel slag permeable concrete |
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| CN109574595A true CN109574595A (en) | 2019-04-05 |
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| CN201910044534.7A Pending CN109574595A (en) | 2019-01-17 | 2019-01-17 | A kind of C40 grades of freeze thawing resistance steel slag permeable concrete |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183179A (en) * | 2019-05-30 | 2019-08-30 | 莫秀合 | A kind of long-acting frost-resistant concrete |
| CN111848009A (en) * | 2020-08-03 | 2020-10-30 | 安徽工业大学 | High-strength high-permeability full-aggregate steel slag water permeable brick and preparation method thereof |
| CN112094099A (en) * | 2020-09-18 | 2020-12-18 | 昆明理工大学 | Steel slag-based pervious concrete |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173671A (en) * | 2011-02-21 | 2011-09-07 | 中冶宝钢技术服务有限公司 | High-strength high-permeability steel slag concrete product and preparation method thereof |
| CN106587843A (en) * | 2016-12-16 | 2017-04-26 | 武汉武新新型建材股份有限公司 | High-strength highly-permeable inorganic concrete and preparation method thereof |
-
2019
- 2019-01-17 CN CN201910044534.7A patent/CN109574595A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173671A (en) * | 2011-02-21 | 2011-09-07 | 中冶宝钢技术服务有限公司 | High-strength high-permeability steel slag concrete product and preparation method thereof |
| CN106587843A (en) * | 2016-12-16 | 2017-04-26 | 武汉武新新型建材股份有限公司 | High-strength highly-permeable inorganic concrete and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 朱效军等: "《智能 + 绿色高性能混凝土》", 30 November 2018, 中国建材工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110183179A (en) * | 2019-05-30 | 2019-08-30 | 莫秀合 | A kind of long-acting frost-resistant concrete |
| CN111848009A (en) * | 2020-08-03 | 2020-10-30 | 安徽工业大学 | High-strength high-permeability full-aggregate steel slag water permeable brick and preparation method thereof |
| CN112094099A (en) * | 2020-09-18 | 2020-12-18 | 昆明理工大学 | Steel slag-based pervious concrete |
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Application publication date: 20190405 |