CN110143771A - High-performance marine portland cement compound additive and marine worker portland cement - Google Patents
High-performance marine portland cement compound additive and marine worker portland cement Download PDFInfo
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- CN110143771A CN110143771A CN201910237355.5A CN201910237355A CN110143771A CN 110143771 A CN110143771 A CN 110143771A CN 201910237355 A CN201910237355 A CN 201910237355A CN 110143771 A CN110143771 A CN 110143771A
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- portland cement
- compound additive
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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
- C04B7/00—Hydraulic cements
- C04B7/02—Portland cement
- C04B7/04—Portland cement using raw materials containing gypsum, i.e. processes of the Mueller-Kuehne type
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
- C04B7/26—Cements from oil shales, residues or waste other than slag from raw materials containing flue dust, i.e. fly ash
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention relates to a kind of high-performance marine portland cement compound additive and marine worker portland cements.The compound additive by weight percentage, is made: metakaolin 20~30%, flyash 40~50%, waterglass 5~10%, gypsum 10~20%, magnesia 10~20% of the raw material for including following component；The granularity of the flyash is 32 μm or more；The partial size of the metakaolin is 8 μm or less.The compound additive can effectively improve the corrosion resistance of marine worker portland cement, reduce water requirement, while reducing construction cost.
Description
Technical field
The present invention relates to building material technical fields, add more particularly to a kind of high-performance marine portland cement is compound
Add agent and marine worker portland cement.
Background technique
China is ocean big country, and ocean engineering potentiality to be exploited is huge.In order to meet various ocean engineering construction for cement
Demand, national tailor " marine worker portland cement " standard (GB/T 31289-2014), the standard is in 2015
October 1 formally implemented.
1, the mixing materials such as a large amount of miberal powder, flyash are added in cement, these mixing materials need under alkaline environment
Its maximum effect can be played, clinker content is few in marine worker portland cement, and the calcium hydroxide that aquation generates is few, it is difficult to meet mine
The mixing materials further hydration demand such as powder, flyash.For this problem, certain methods use the side of various active exciting agent compounding
Method is to meet the aquation demand of mixing material, but when various active exciting agent compounds is at high cost, using complexity, also results in
Additive (such as water-reducing agent) bad adaptability of cement, reduces the working performance of cement, or even can not apply in concrete.
2, the volume of total mixing material causes the early strength of cement low 50% or more in cement.
3, high quality S95 grades of contents of ground slag causes the water requirement of cement higher generally 40% or more in cement.For
The problem, the prior art usually require additionally to add water-reducing agent, this undoubtedly increases construction cost.
It 4, is the durability for further increasing marine structure, the corrosion resistance of marine worker portland cement is to be improved.
Summary of the invention
Based on this, it is necessary to provide a kind of high-performance marine portland cement compound additive.The compound additive can not
It is only capable of being obviously improved the corrosion resistance of existing marine worker portland cement, moreover it is possible to reduce water requirement, promote cement and water-reducing agent
Adaptability, while reducing construction cost.
A kind of high-performance marine portland cement compound additive, by weight percentage, by the original including following component
Material is made:
The granularity of the flyash is 32 μm or more；
The partial size of the metakaolin is 8 μm or less.
The compound additive of the high-performance marine portland cement in one of the embodiments, with weight percent
Than meter, it is made of the raw material for including following component:
The modulus of the waterglass is 0.5~2.5 in one of the embodiments,.
The granularity of the flyash is 32~80 μm in one of the embodiments,.
The partial size of the metakaolin is 3~8 μm in one of the embodiments,.
28 days activity indexs of the metakaolin are 105% or more in one of the embodiments, and water demand ratio is
120% or less.
The gypsum is anhydrite in one of the embodiments,.
The magnesia is that magnesite is obtained in 1050 ± 50 DEG C of calcinings in one of the embodiments, and wherein MgO contains
Amount is greater than 85%, and activity index is 200~300S.
The present invention also provides a kind of high-performance marine portland cements comprising the compound additive.
The volume of the compound additive is 5~10% (weight percent) in one of the embodiments,.
The principle of the present invention and advantage are as follows:
The present invention provides a kind of high-performance marine portland cement compound additive, uses the higher ridge of certain particle size
Soil and flyash match, and wherein metakaolin is the artificial pozzolanic materials with pozzolanic activity, can be with marine worker silicic acid
The hydrated product calcium hydroxide of salt cement, which reacts, generates gum material, can also be generated with chloride ion by chemical bond
Friedel salt plays the role of solidification to chloride ion, reduces the erosion damage of chloride ion；Metakaolin is a kind of again simultaneously
Fine powder can be filled into the pellet pores of marine worker Portland clinker, be 8 μm hereinafter, simultaneously by controlling its granularity
The flyash for being 32 μm or more with granularity can improve the gradation of marine worker Portland clinker, and then improve the closely knit of cement
Degree and corrosion stability；In addition, the flyash that the granularity without grinding is 32 μm or more is mostly the biggish spherical shape of particle, in cement
Play skeleton function and lubricating action, can be improved the uniformity and mobility of cement, solve current cement water requirement it is high, with
The problem of water reducer compatibility difference；Meanwhile the flyash later period, there are also certain hydration activities, can meet marine worker portland cement
The aquation demand of clinker, promotes the extent of reaction of mixing material, improves the density of slurry, solves the resistance to of marine worker portland cement
Long property problem.
In addition, the present invention compounds also in compound additive system with gypsum and magnesia, wherein gypsum is as a kind of
The expansion sources and exciting agent of early stage can promote the early strength and anti-cracking performance of cement, and magnesia is as a kind of middle and later periods
Expansion sources can make cement generate the effect of microdilatancy, reduce later period cracking risk.Therefore, gypsum and magnesia are as double swollen
Swollen source can be improved the compactness of slurry, reduce cement slurry cracking risk, so that improving cement resists chloride ion, sulfuric acid
The harmful ions such as radical ion enter the ability inside Behavior of Hardened Cement Paste, and then improve the resistant to sea water erosion performance of cement, are further promoted
The erosion-resisting characteristics and durability of cement, while solving the problems, such as that current marine worker portland cement early strength is low.
Finally, the present invention uses the activity excitant of waterglass and gypsum as metakaolin, flyash etc., it can be abundant
Excite the activity of these mineral, at the same effectively avoid it is poor using other bases exciting agent bring cement fluidities, with water-reducing agent
The problems such as poor compatibility, mutual supplement with each other's advantages can be formed by being used together with above-mentioned other materials, promote the items of marine worker portland cement
Performance, to prepare high performance marine worker portland cement.
Compared with prior art, the invention has the following beneficial effects:
High-performance marine portland cement compound additive of the invention, using the metakaolin and fine coal of certain partial size
Ash matches, and using waterglass as activity excitant, using gypsum as early stage exciting agent and swelling agent, magnesia is swollen as the later period
Swollen dose.Various raw materials are easy to obtain, and have complementary advantages, and generate synergistic effect, can more comprehensively improve the performance of cement.Mainly
Show: the metakaolin and flyash and marine worker portland cement of certain partial size form more perfect grain composition, improve
The consistency of cement promotes its erosion-resisting characteristics, while solving asking for current marine worker portland cement and water-reducing agent bad adaptability
Topic；Metakaolin has solidification and absorbs the function of chloride ion, promotes the chloride resisting properties of marine worker portland cement；Stone
Cream and magnesia have the function of inhibiting cracking, improve compactness, to improve cement as early stage and later period double expansion sources
It resists the harmful ions such as chloride ion, sulfate ion and enters the ability inside Behavior of Hardened Cement Paste；Flyash, gypsum also have simultaneously
Promote hydrated cementitious function, using waterglass as the cooperating therewith aquation that can meet cement for construction in sea clinker of activity excitant
Demand, improving performance reduce cost.To sum up, the sea prepared using the high-performance marine portland cement compound additive
Work portland cement can effectively reduce destruction of the seawater to maritime concrete structures, have marine worker engineering excellent resistance to
Long property.
High-performance marine portland cement of the invention adds above-mentioned compound addition in common marine worker portland cement
Agent can have more excellent working performance and durability.Further, in the high-performance marine portland cement, on
State compound additive is relatively inexpensive, the preferable volume of durability is common marine worker portland cement quality 5~10%.
Specific embodiment
Below in conjunction with specific embodiment to high-performance marine portland cement compound additive and marine worker silicic acid of the invention
Salt cement is described in further detail.
Metakaolin described in the embodiment of the present invention is kaolin high-temperature calcination at 600 DEG C~900 DEG C, and grinding is extremely
Granularity is 3~8 μm；The 28d activity index of metakaolin is more than or equal to 105%, and water demand ratio is less than 120%.
The flyash refers to the F class III for meeting the requirement of standard GB/T/T 1596 without grinding of finished product
Grade flyash is 32~80 μm by the granularity that the method for sorting obtains.
The modulus of the waterglass is 0.5~2.5.
The anhydrite refers to the anhydrite product for meeting the requirement of GB/T 5483, and grade is in second level or more.
The magnesia, which refers to, to be obtained using magnesite in 1050 ± 50 DEG C of calcinings, and content of MgO is greater than 85%, activity
200~300S of index.
Embodiment 1:
A kind of high-performance marine portland cement compound additive of the present embodiment, by the raw material system of following weight percent
At:
Wherein the granularity of metakaolin is 3-8 μm, and 28d activity index is 113%, water demand ratio 115%.
The granularity of flyash is 32-80 μm.
The modulus of waterglass is 0.5.
The compound additive of above-mentioned high-performance marine portland cement the preparation method is as follows: prepare each raw material in proportion,
It is uniformly mixed.
Embodiment 2:
A kind of compound additive of high-performance marine portland cement of the present embodiment, by the raw material of following weight percent
It is made:
Wherein the granularity of metakaolin is 3-8 μm, and 28d activity index is 105%, water demand ratio 110%.
The granularity of flyash is 32-80 μm.
The modulus of waterglass is 2.5.
The compound additive of above-mentioned high-performance marine portland cement the preparation method is as follows:
Each raw material is prepared in proportion, is uniformly mixed.
Embodiment 3:
A kind of compound additive of high-performance marine portland cement of the present embodiment, by the raw material of following weight percent
It is made:
Wherein the granularity of metakaolin is 3-8 μm, and 28d activity index is 115%, water demand ratio 120%.
The granularity of flyash is 32-80 μm.
The modulus of waterglass is 1.2.
The compound additive of above-mentioned high-performance marine portland cement the preparation method is as follows: prepare each raw material in proportion,
It is uniformly mixed.
Comparative example 1:
A kind of marine worker portland cement compound additive of this comparative example, the difference with embodiment 3 are to remove component hard
Gypsum is made of the raw material of following weight percent:
Wherein the granularity of metakaolin is 3-8 μm, and 28d activity index is 115%, water demand ratio 120%.
The granularity of flyash is 32-80 μm.
The modulus of waterglass is 1.2.
The compound additive of above-mentioned marine worker portland cement the preparation method is as follows: prepare each raw material in proportion, mixing is equal
It is even.
Comparative example 2:
A kind of marine worker portland cement compound additive of this comparative example, the difference with embodiment 3 are to remove component inclined
Kaolin is made of the raw material of following weight percent:
Wherein the granularity of flyash is 32-80 μm.
The modulus of waterglass is 1.2.
The compound additive of above-mentioned marine worker portland cement the preparation method is as follows: prepare each raw material in proportion, mixing is equal
It is even.
Comparative example 3:
A kind of marine worker portland cement compound additive of this comparative example is to remove component fine coal with the difference of embodiment 3
Ash is made of the raw material of following weight percent:
Wherein the granularity of metakaolin is 3-8 μm, and 28d activity index is 115%, water demand ratio 120%.
The modulus of waterglass is 1.2.
The compound additive of above-mentioned marine worker portland cement the preparation method is as follows: prepare each raw material in proportion, mixing is equal
It is even.
Comparative example 4:
A kind of marine worker portland cement compound additive of this comparative example, the difference with embodiment 3 are to remove component water
Glass is made of the raw material of following weight percent:
Wherein the granularity of metakaolin is 3-8 μm, and 28d activity index is 115%, water demand ratio 120%.
The granularity of flyash is 32-80 μm.
The compound additive of above-mentioned marine worker portland cement the preparation method is as follows: prepare each raw material in proportion, mixing is equal
It is even.
Comparative example 5:
A kind of marine worker portland cement compound additive of this comparative example is to remove component with above-described embodiment difference
Magnesia is made of the raw material of following weight percent:
Wherein the granularity of metakaolin is 3-8 μm, and 28d activity index is 115%, water demand ratio 120%.
The granularity of flyash is 32-80 μm.
The modulus of waterglass is 1.2.
The compound additive of above-mentioned high-performance marine portland cement the preparation method is as follows: prepare each raw material in proportion,
It is uniformly mixed.
Comparative example 6:
A kind of compound additive of marine worker portland cement of this comparative example, raw material and preparation method are the same as embodiment 3, area
It is not using existing compound active exciting agent (calcium hydroxide, waterglass and sodium hydroxide are compound), specifically by weighing as follows
The raw material of amount percentage is made:
Wherein the granularity of metakaolin is 3-8 μm, and 28d activity index is 115%, water demand ratio 120%.
The granularity of flyash is 32-80 μm.
The modulus of waterglass is 1.2.
The compound additive of above-mentioned marine worker portland cement the preparation method is as follows: prepare each raw material in proportion, mixing is equal
It is even.
Comparative example 7:
A kind of marine worker portland cement compound additive of this comparative example, raw material and preparation method are the same as embodiment 3, difference
Be using metakaolin performance it is different, be specifically made of the raw material of following weight percent:
The granularity of metakaolin is 10-20 μm, and 28d activity index is 95%, water demand ratio 100%.
The granularity of flyash is 32-80 μm.
The modulus of waterglass is 1.2.
The compound additive of above-mentioned marine worker portland cement the preparation method is as follows:
Each raw material is prepared in proportion, is uniformly mixed.
Comparative example 8:
A kind of marine worker portland cement compound additive of this comparative example, raw material and preparation method are the same as embodiment 3, difference
Be using flyash be that (its size distribution is that 45 μm of square hole screens tail over and are not more than to conventional F class III level flyash
45%) it, is specifically made of the raw material of following weight percent:
Wherein the granularity of metakaolin is 3-8 μm, and 28d activity index is 115%, water demand ratio 120%.
Flyash is conventional III level flyash.
The modulus of waterglass is 1.2.
The compound additive of above-mentioned marine worker portland cement the preparation method is as follows:
Each raw material is prepared in proportion, is uniformly mixed.
Performance test:
The compound additive of embodiment 1-3 and comparative example 1-8 are added in existing marine worker portland cement, wherein
In order to protrude comparison, the fixation volume of comparative example 1-8 is 8%, with the marine worker portland cement (marine worker before addition before addition
The raw material composition such as table 1 of portland cement) it is comparative sample, basic performance is tested, as a result as shown in table 2 below:
Marine worker portland cement before table 1 adds matches
| Material category | Clinker | Desulfurized gypsum | Miberal powder |
| Mass fraction (%) | 35 | 5 | 60 |
Table 2
As shown in Table 1, using 1-3 of the embodiment of the present invention compound additive prepare marine worker portland cement compared to pair
Than sample, mobility, intensity and corrosion stability obtain the promotion of certain amplitude, and volume is higher, and performance is better.Glue sand flow is dynamic
Degree is promoted by original 200mm to 220mm or more, some proportions even promotion to 230mm or more.Early stage 3d, intensity was by comparing
The 12.6MPa of sample is lifted approximately even more than 20MPa.28d chloride permeability coefficient by comparative sample 1.12*10-12m2/s
Maximum is reduced to 0.28*10-12m2/ s reduces amplitude clearly.In the case where volume is 8%, comparative example 1-8's is each
Item performance shows that every material is mutually promoted with complementing each other in compound additive of the invention not as good as embodiment 3
Function, best effect cannot be played by removing any of which material or changing the characteristic of wherein certain material, into one
Step shows to can promote marine worker portland cement workability using high-performance marine portland cement compound additive of the invention
The promotion of energy, mechanical property and erosion-resisting characteristics.
In addition, by respectively with the compound addition of 5%, 6%, 7%, 8%, 9% and 10% volume addition embodiment 1-3
Known to the performance comparison of agent: firstly, can be obtained more excellent marine worker portland cement workability when volume is only 5%
Energy, mechanical property and erosion-resisting characteristics；Secondly, with the increase of volume, marine worker portland cement working performance, mechanical property
With the gradually promotion of erosion-resisting characteristics, and when increasing to 8%, erosion-resisting characteristics promotes amplitude and obviously increases, and promotes width backward
Degree tends to reduce again.As a result, compound additive volume control be 5~10%, that is, may make marine worker portland cement scheme compared with
It is preferable for economy, durability, control the implementation result that then can more obtain more economy and high-durability energy for 8~9%.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of high-performance marine portland cement compound additive, which is characterized in that by weight percentage, by including as follows
The raw material of component is made:
The granularity of the flyash is 32 μm or more；
The partial size of the metakaolin is 8 μm or less.
2. the compound additive of high-performance marine portland cement according to claim 1, which is characterized in that with weight hundred
Divide than meter, be made of the raw material for including following component:
3. high-performance marine portland cement compound additive according to claim 1, which is characterized in that the waterglass
Modulus be 0.5~2.5.
4. the compound additive of high-performance marine portland cement according to claim 1, which is characterized in that the fine coal
The granularity of ash is 32~80 μm.
5. high-performance marine portland cement compound additive according to claim 1, which is characterized in that the higher ridge
The partial size of soil is 3~8 μm.
6. high-performance marine portland cement compound additive according to claim 1, it is characterised in that the higher ridge
28 days activity indexs of soil are 105% or more, and water demand ratio is 120% or less.
7. high-performance marine portland cement compound additive according to claim 1, which is characterized in that the gypsum is
Anhydrite.
8. high-performance marine portland cement compound additive according to claim 1, which is characterized in that the magnesia
It is obtained for magnesite in 1050 ± 50 DEG C of calcinings, wherein content of MgO is greater than 85%, and activity index is 200~300S.
9. a kind of high performance marine worker portland cement, which is characterized in that it includes claim 1-8 described in any item compound
Additive.
10. high performance marine worker portland cement according to claim 9, which is characterized in that any one of claim 1-8
The volume of the compound additive is 5~10%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264697A (en) * | 2021-05-10 | 2021-08-17 | 海南津桓建材科技有限公司 | Marine engineering portland cement and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792982A (en) * | 2005-11-25 | 2006-06-28 | 华南理工大学 | Silicate cement of precenting chlorate corrosion |
| US7381263B2 (en) * | 2005-10-24 | 2008-06-03 | Halliburton Energy Services, Inc. | Cement compositions comprising high alumina cement and cement kiln dust |
| CN101456685A (en) * | 2009-01-04 | 2009-06-17 | 武汉理工大学 | Anti-crack alkalis excited ecological cement |
| CN102173700A (en) * | 2010-12-31 | 2011-09-07 | 四川嘉华企业（集团）股份有限公司 | Minimum inflation low heat silicate cement |
| CN109020270A (en) * | 2018-08-17 | 2018-12-18 | 华南理工大学 | A kind of high resistance to corrosion composite Portland cement and preparation method thereof |
-
2019
- 2019-03-27 CN CN201910237355.5A patent/CN110143771A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7381263B2 (en) * | 2005-10-24 | 2008-06-03 | Halliburton Energy Services, Inc. | Cement compositions comprising high alumina cement and cement kiln dust |
| CN1792982A (en) * | 2005-11-25 | 2006-06-28 | 华南理工大学 | Silicate cement of precenting chlorate corrosion |
| CN101456685A (en) * | 2009-01-04 | 2009-06-17 | 武汉理工大学 | Anti-crack alkalis excited ecological cement |
| CN102173700A (en) * | 2010-12-31 | 2011-09-07 | 四川嘉华企业（集团）股份有限公司 | Minimum inflation low heat silicate cement |
| CN109020270A (en) * | 2018-08-17 | 2018-12-18 | 华南理工大学 | A kind of high resistance to corrosion composite Portland cement and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张巨松: "《混凝土学》", 28 February 2011, 哈尔滨工业大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113264697A (en) * | 2021-05-10 | 2021-08-17 | 海南津桓建材科技有限公司 | Marine engineering portland cement and preparation method thereof |
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