CN106747062A - A kind of concrete of preventing microorganism corrosion - Google Patents
A kind of concrete of preventing microorganism corrosion Download PDFInfo
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- CN106747062A CN106747062A CN201611071894.9A CN201611071894A CN106747062A CN 106747062 A CN106747062 A CN 106747062A CN 201611071894 A CN201611071894 A CN 201611071894A CN 106747062 A CN106747062 A CN 106747062A
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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
- C04B2111/20—Resistance against chemical, physical or biological attack
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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)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a kind of concrete of preventing microorganism corrosion, it is related to building material field, including following weight proportion component：250 325 parts of cement；50 100 parts of flyash；140 200 parts of water；650 750 parts of sand；1,100 1200 parts of stone；13 parts of water reducer；0.08 1.2 parts of copper phthalocyanine.Concrete of the present invention has the advantages that good bactericidal properties, low cost, the retention ratio of bactericide are high, and the incorporation of copper phthalocyanine bactericide does not influence concrete self performance, can be widely applied to the construction of municipal blowdown water conservancy projects.
Description
Technical field
The present invention relates to building material field, more particularly to a kind of concrete of preventing microorganism corrosion.
Background technology
In urban environment engineering, the facility of conveying and treatment sewage because receive for a long time soda acid, wash away, various corruption such as microorganism
Concrete structure Problem of Failure is increasingly serious caused by erosion effect, and caused economic loss has caused worldwide universal
Concern.1945, Parker was recognized first, the metabolite of sulfur bacteria --- biological sulfuric acid is to cause concrete sewage pipeline
The main cause of corrosion.Also experimental studies have found that, nitrobacteria generates nitric acid by nitrification to amine, equally to coagulation
Soil causes serious acid corrosion.Current Urbanization in China is constantly accelerated, and needs supporting a large amount of municipal drainage projects, carries out coagulation
The research of native microbiologic(al) corrosion prevention and control field, has important practical significance.
The study on prevention of relevant concrete sewage corrosion mainly includes concrete modifying both at home and abroad at present, and coating is protected and raw
Thing kills three major types.Simple concrete modifying can not significantly alleviate the corrosion of concrete, and inert coatings then have cracking, take off
Fall and the defect such as easy to wear, and the application of the bactericide set up in Microbial Corrosion of Mild Steel mechanism belongs to active measures,
It passes through to prevent the breeding of microorganism in sewage to be metabolized, and suppresses or reduce the generation of biological sulfuric acid, to control concrete microorganism
Corrosion is largely effective.When but bactericide is as in function ingredients incorporation concrete, its species, the selection of volume, long-term retention
Rate and the influence to concrete other performance also lack system research.
The content of the invention
The technical problems to be solved by the invention are to overcome prior art defect, there is provided a kind of bactericidal properties are good, low cost
And do not influence the concrete that the preventing microorganism of concrete self performance corrodes.
In order to solve the above technical problems, the technical solution used in the present invention is：
A kind of concrete of preventing microorganism corrosion, the concrete includes following weight proportion component：
Cement 250-325 parts；
Flyash 50-100 parts；
Water 140-200 parts；
Sand 650-750 parts；
Stone 1100-1200 parts；
Water reducer 1-3 parts；
Copper phthalocyanine 0.08-1.2 parts.
Preferably, 278 parts of cement, 64 parts of flyash, 160 parts of water, 687 parts of sand, 1154 parts of stone, 1.5 parts of water reducer,
Copper phthalocyanine 0.08-1.2 parts.
It is further preferred that 278 parts of cement, 64 parts of flyash, 160 parts of water, 687 parts of sand, 1154 parts of stone, water reducer
1.5 parts, 0.3 part of copper phthalocyanine.
Preferably, the water reducer is high-efficiency water-reducing agent of poly-carboxylic acid.
Preferably, the cement is the cement of normal silicate 42.5.
Preferably, the flyash is I grade of flyash.
Preferably, the modulus of fineness of the sand is 3.0-2.6.
Preferably, the particle diameter of the stone is 5mm-20mm.
Above concrete mix is tested by coarse aggregate various combination tap density, determines the optimum combination of coarse aggregate
Ratio；Sand-coarse aggregate combined density experiment, determines optimal sand coarse aggregate ratio during by different sand coarse aggregate ratios；By different admixture kinds and mixing
Mortar fluidity and cement mortar strength are tested during amount, it is determined that suitable admixture kind and volume；By additive and Binder Materials
Compatibility test, it is determined that suitable additive kind and volume；By concrete trial mix determine meet workability requirement use water
Amount, so that it is determined that final concrete mix.
It is using the beneficial effect produced by above-mentioned technical proposal：The present invention has been considered using bactericide as one kind
When in function ingredients incorporation concrete, it is on the influence of concrete self performance, to enhanced sewage sterilizing rate and in concrete
The performance of the aspect of portion's retention ratio three, and preferably made a kind of concrete flowability, intensity of improving on this basis and (collapse
Degree increase 30%, intensity improve 58%), few (volume is only Binder Materials for simple production process and bactericide volume
0.025-0.4%), low cost (about 25 yuan/kilogram), biocidal efficacies good (sterilizing rate is about 83%), bactericide retention ratio is high (stays
Deposit rate more than 99%) preventing microorganism corrosion concrete.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description.
Fig. 1 is influence curve of five kinds of different addition quantity bactericide to the slump of fresh concrete in the embodiment of the present invention 4
Figure；
Fig. 2 is influence song of five kinds of different addition quantity bactericide to maturing 28d compression strength in the embodiment of the present invention 4
Line chart；
Wherein ■ is the concrete for mixing sodium bromide CX, ● to mix the concrete of sodium tungstate CW, ▲ it is to mix mixing for zinc oxide CY
Solidifying soil, ★ is the concrete for mixing copper phthalocyanine CT, ◆ to mix the concrete of dodecyl benzyl dimethyl ammonium chloride CS；
Fig. 3 is the laser co-focusing that the embodiment of the present invention 7 does not mix bactericide concrete surface attachment biomembrane in sewage
Flying-spot microscope figure；
Fig. 4 is that the embodiment of the present invention 7 fills 0.1% copper phthalocyanine bactericide concrete surface attachment biomembrane in sewage
Laser confocal scanning microscope figure.
Specific embodiment
Technical scheme is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention can be more
It is easy to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Embodiment 1
Each component mass parts are as follows in this example：The cement 278kg/m of normal silicate 42.53；I grade of flyash 64kg/m3；Water
160kg/m3；Modulus of fineness is the sand 687kg/m of 3.0-2.63；Particle diameter is 5mm-20mm stones 1154kg/m3；Polycarboxylic acids is high
Effect water reducer 1.5kg/m3；Copper phthalocyanine 0.3kg/m3。
After the cement of above-mentioned mass parts, flyash, sand, stone input mixer are stirred, above-mentioned quality is added
Part water reducer, water and copper phthalocyanine be stirred, obtain the concrete of preventing microorganism corrosion.
Embodiment 2
Each component mass parts are as follows in this example：The cement 250kg/m of normal silicate 42.53；I grade of flyash 50kg/m3；Water
140kg/m3；Modulus of fineness is the sand 650kg/m of 3.0-2.63；Particle diameter is 5mm-20mm stones 1100kg/m3；Polycarboxylic acids is high
Effect water reducer 1kg/m3；Copper phthalocyanine 0.08kg/m3。
After the cement of above-mentioned mass parts, flyash, sand, stone input mixer are stirred, above-mentioned quality is added
Part water reducer, water and copper phthalocyanine be stirred, obtain the concrete of preventing microorganism corrosion.
Embodiment 3
Each component mass parts are as follows in this example：The cement 325kg/m of normal silicate 42.53；I grade of flyash 100kg/m3；Water
200kg/m3；Modulus of fineness is the sand 750kg/m of 3.0-2.63；Particle diameter is 5mm-20mm stones 1200kg/m3；Polycarboxylic acids is high
Effect water reducer 3kg/m3；Copper phthalocyanine 1.2kg/m3。
After the cement of above-mentioned mass parts, flyash, sand, stone input mixer are stirred, above-mentioned quality is added
Part water reducer, water and copper phthalocyanine be stirred, obtain the concrete of preventing microorganism corrosion.
Embodiment 4
Normal concrete strength grade prepared in the present embodiment is C30, and water-cement ratio 0.47, specific match ratio is as follows：
The cement 278kg/m of normal silicate 42.53；I grade of flyash 64kg/m3；Water 160kg/m3；Modulus of fineness is the sand of 3.0-2.6
687kg/m3；Particle diameter is 5mm-20mm stones 1154kg/m3；High-efficiency water-reducing agent of poly-carboxylic acid 1.5kg/m3。
To contrast the influence of different bactericide to concrete, compound from halogenated compound, tungsten powder or tungsten, (copper, zinc,
Lead, nickel) metal oxide, (copper, zinc, lead, manganese, nickel) phthalocyanine, quaternary amine this five class be usually used in the bactericide of concrete, respectively
Select environmental protection, the representative substances of low cost：Sodium bromide, sodium tungstate, zinc oxide, copper phthalocyanine and dodecyl dimethyl benzyl chloride
Change ammonium, wherein dodecyl benzyl dimethyl ammonium chloride is liquid fungicide, and pulvis is made after can doing carrier adsorption using zeolite
Use.
Choose selection bactericide volume be respectively Binder Materials (cement and flyash) 0.025%, 0.05%, 0.1%,
0.2% and 0.4%, it is used to study the slump and maturing 28d pressure resistance of the different cultivars bactericide to fresh concrete
The affecting laws of degree.The normal concrete compared and do not mix bactericide is can be seen that from Fig. 1 and Fig. 2, the incorporation of copper phthalocyanine can be obvious
Improve the mobility and intensity of concrete, particularly when volume is 0.1% improvement significantly, concrete slump and intensity
30% and 58% can be respectively increased；Other four kinds of bactericide with the change of volume to concrete flowability and intensity effect rule not
One, but totally see some more or less adverse effects.
Embodiment 5
By add in clear water it is a certain proportion of for supplying growth of microorganism needed for glucose, starch, urea, egg
The nutriments such as white peptone, and microorganism is cultivated and tamed with the activated sludge for taking from Sewage Plant second pond, make COD
Value reaches the artificial-strengthening sewage of 6000mg/L (COD value of usual municipal sewage is about 300-500mg/L) left and right.Using
MiSeq high throughput sequencing technologies are not to mixing and having carried out DNA sequencing to draw dirt mixed with the sewage sample of different cultivars bactericide
Microbe species and content in water, to reflect the action and efficacy of bactericide.The sterilizing rate of every kind of bactericide is entered by formula (1)
Gone calculating, the results are shown in Table 1, it can be seen that this bactericidal effect of five kinds of bactericide in sewage by by force to weak order successively
For：Copper phthalocyanine>Sodium bromide>Dodecyl benzyl dimethyl ammonium chloride>Sodium tungstate>The best copper of zinc oxide, wherein bactericidal effect
Phthalocyanine is about 83%. to the average bactericidal rate of four kinds of microorganisms
S is sterilizing rate of the bactericide to certain microorganism, % in formula；N0For microorganism contains in the sewage for not mixing bactericide
Amount；N1It is content of microorganisms in the sewage for filling certain bactericide.
Table 1
Embodiment 6
Using Inductively coupled plasma mass spectrometry to not mixing the normal concrete of bactericide and mixing 0.1% (relative gelling material
The quality of material, the similarly hereinafter) concrete sample of different cultivars bactericide, soaked respectively in artificial-strengthening sewage 7d, 28d, 90d and
Element leaching rate after 120d is tested, and retention ratio of five kinds of bactericide in concrete is further calculated by following formula, knot
Fruit is shown in Table 2.From Table 2, it can be seen that this five kinds of retention ratios of bactericide order from high to low is followed successively by：Copper phthalocyanine>Oxidation
Zinc>Dodecyl benzyl dimethyl ammonium chloride>Sodium tungstate>Sodium bromide.After 120d is soaked under Sewage Environment, copper phthalocyanine and oxygen
Change retention ratio still up to more than 99% of both bactericide of zinc in inside concrete, sodium bromide and sodium tungstate are in concrete
Retention ratio is then about 87% and 92%.
R is retention ratio of the bactericide in concrete, % in formula；M0To mix the bactericide element total amount in concrete,
mg/L；M1And M2Respectively fill bactericide and do not mix the concrete of bactericide through the element dissolution after sewage immersion different time
Amount, mg/L.
Table 2
Embodiment 7
The normal concrete and the concrete sample mixed with 0.1% copper phthalocyanine bactericide of bactericide are not mixed in contrast, artificial
Microorganism situation in surface biological film after being soaked 3 months in enhanced sewage.By cell life or death fluorescent dyeing reagent box opposite
Thing film is marked, and is observed using laser confocal scanning microscope, as can be seen from Figure 3 base under enhanced sewage environment
Most of microorganism (whiteness) is all living in quasi- concrete surface biomembrane, as can be seen from Figure 4 fills copper phthalocyanine
The micro organism quantity survived in the concrete sample surface biological film of bactericide is significantly reduced.It will thus be seen that preventing microorganism is rotten
The concrete of erosion is a kind of to be highly suitable for resisting the concrete of microbiologic(al) corrosion under Sewage Environment.
Claims (8)
1. the concrete that a kind of preventing microorganism corrodes, it is characterised in that including following weight proportion component：
Cement 250-325 parts；
Flyash 50-100 parts；
Water 140-200 parts；
Sand 650-750 parts；
Stone 1100-1200 parts；
Water reducer 1-3 parts；
Copper phthalocyanine 0.08-1.2 parts.
2. the concrete that a kind of preventing microorganism according to claim 1 corrodes, it is characterised in that 278 parts of cement, fine coal
64 parts of ash, 160 parts of water, 687 parts of sand, 1154 parts of stone, 1.5 parts, copper phthalocyanine 0.08-1.2 parts of water reducer.
3. the concrete that a kind of preventing microorganism according to claim 2 corrodes, it is characterised in that 278 parts of cement, fine coal
64 parts of ash, 160 parts of water, 687 parts of sand, 1154 parts of stone, 1.5 parts of water reducer, 0.3 part of copper phthalocyanine.
4. the concrete that a kind of preventing microorganism according to claim 1 corrodes, it is characterised in that the water reducer is poly-
Carboxylic acid high efficiency water reducing agent.
5. the concrete that a kind of preventing microorganism according to claim 1 corrodes, it is characterised in that the cement is common
The cement of silicate 42.5.
6. the concrete that a kind of preventing microorganism according to claim 1 corrodes, it is characterised in that the flyash is I grade
Flyash.
7. the concrete that a kind of preventing microorganism according to claim 1 corrodes, it is characterised in that the fineness of the sand
Modulus is 3.0-2.6.
8. the concrete that a kind of preventing microorganism according to claim 1 corrodes, it is characterised in that the particle diameter of the stone
It is 5mm-20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611071894.9A CN106747062A (en) | 2016-11-29 | 2016-11-29 | A kind of concrete of preventing microorganism corrosion |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611071894.9A CN106747062A (en) | 2016-11-29 | 2016-11-29 | A kind of concrete of preventing microorganism corrosion |
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| CN201611071894.9A Pending CN106747062A (en) | 2016-11-29 | 2016-11-29 | A kind of concrete of preventing microorganism corrosion |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110845170A (en) * | 2019-11-15 | 2020-02-28 | 石家庄铁道大学 | Composite bactericide for concrete in sewage environment and screening method thereof |
| CN112225501A (en) * | 2020-09-21 | 2021-01-15 | 湖州上建华煜混凝土有限公司 | Concrete for preventing microbial corrosion and preparation method thereof |
| 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 |
| CN114620987A (en) * | 2022-04-28 | 2022-06-14 | 广西壮族自治区水利科学研究院 | Marine concrete with microbial corrosion effect |
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| US6146666A (en) * | 1996-09-30 | 2000-11-14 | Hazama Corporation | Thiobacillus thiooxidans growth inhibitor |
| US6159281A (en) * | 1996-02-13 | 2000-12-12 | Toyo Ink Manufacturing Co., Ltd. | Deterioration preventive for concrete or mortar and method for preventing deterioration of concrete or mortar |
| CN103755196A (en) * | 2013-12-17 | 2014-04-30 | 芜湖沃多福新材料有限责任公司 | Concrete additive capable of resisting microbiological corrosion of concrete |
-
2016
- 2016-11-29 CN CN201611071894.9A patent/CN106747062A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6159281A (en) * | 1996-02-13 | 2000-12-12 | Toyo Ink Manufacturing Co., Ltd. | Deterioration preventive for concrete or mortar and method for preventing deterioration of concrete or mortar |
| US6146666A (en) * | 1996-09-30 | 2000-11-14 | Hazama Corporation | Thiobacillus thiooxidans growth inhibitor |
| CN103755196A (en) * | 2013-12-17 | 2014-04-30 | 芜湖沃多福新材料有限责任公司 | Concrete additive capable of resisting microbiological corrosion of concrete |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110845170A (en) * | 2019-11-15 | 2020-02-28 | 石家庄铁道大学 | Composite bactericide for concrete in sewage environment and screening method thereof |
| CN112225501A (en) * | 2020-09-21 | 2021-01-15 | 湖州上建华煜混凝土有限公司 | Concrete for preventing microbial corrosion and preparation method thereof |
| 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 |
| CN114620987A (en) * | 2022-04-28 | 2022-06-14 | 广西壮族自治区水利科学研究院 | Marine concrete with microbial corrosion effect |
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