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MCI?(Migrating Corro

MCI-2005

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PRODUCT DESCRIPTION:

MCI®-2005 is a water-based, organic, corrosion inhibiting admixture for protection of metallic reinforcement in concrete structures.

Service Hotline:+86-0532-80989502,+86-135-0535-2885
E-Mail:zzgvci@163.com

商品詳細

When incorporated into concrete, MCI-2005® forms a protective, monomolecular layer on embedded metals that inhibits corrosion. In new construction, this is quantified by an increase in critical chloride threshold and subsequent reduction in corrosion rates when corrosion does initiate. When used with repair mortars and grouts, MCI®-2005 not only protects rebar within the patch, it is able to migrate into undisturbed concrete adjacent to the repair, to protect reinforcement already in place.

MCI®-2005 has been awarded the USA BioPr efer r ed? designation (www.biopreferred. gov).

PACKAGING & STORAGE
Available in 5 gallon (19 Liter)
pails, 55 gallon (208 Liter) drums,
and 275 gallon (1040 Liter) totes.

Store away from direct sunlight and at ambient temperatures – above 32?F (0?C) and up to 131?F (55?C). When properly stored, MCI®-2005 has a shelf life of 24 months.

HOW IT WORKS
MCI®-2005 is an organic corrosion inhibitor. It is considered ambiodic (mixed), meaning it protects both anodic and cathodic areas within a corrosion cell. MCI®- 2005 contains a blend of amine salts of carboxylic acids which form a protective layer on embedded reinforcement delaying the onset of corrosion as well as reducing existing corrosion rates.
MCI®-2005 is effective at enhancing the durability and extending the service life of concrete structures exposed to corrosive environments (carbonation, chlorides, and atmospheric attack).
WHERE TO USE
?Reinforced concrete including precast, pre-stressed, and post-tensioned structures
?Corrosive environments including exposure to deicing salts, saline groundwater, airborne chlorides, and carbonation
?Marine and coastal structures, highways and bridges, parking decks, balconies, pools, concrete tanks, pilings, substructures, piers, pillars, pipes, and utility poles


ADVANTAGES
?Biobased (67%), awarded USA BioPreferred? designation (www.biopreferred.gov)
?Earns credit towards LEED certification
?Lower toxicity and environmental impact than traditional corrosion inhibiting admixtures such as calcium nitrite
?Low dosage rate with minimal effect on concrete properties (i.e. workability, strength development, air entrainment, etc.)
?Single dosage rate which is independent of expected exposure to chlorides
?Ability to migrate through porous substrates (concrete, masonry, limestone, etc.) by capillary action, vapor diffusion and ionic attraction
?Meets all requirements of ASTM C1582
?Certified to meet ANSI/NSF Standard 61 for use on structures holding potable water
?Field and lab tested worldwide
Complies with CSA S413, Section C1.2, for corrosion inhibiting

PHYSICAL PROPERTIES

  Appearance

Clear dark brown liquid

  pH

9.5-11.5 (neat)

  Non-volatile Content

44-55%

  Density

9.5-10.3 lb/gal (1.14-1.23 Kg/L)

  Shelf Life

24 months

DOSAGE

Add MCI®-2005 to concrete mix or repair mortars at 1 pt/yd3 (0.6 L/m3). Dosage is fixed and independent of chloride levels.

APPLICATION

MCI®-2005 is best added with the mix water into ready mix concrete at the plant. Alternatively, it can be dosed into the ready mix truck using portable dosing equipment. Concrete should be mixed thoroughly before placement.

STANDARD TEST RESULTS

Slump

ASTM C143

Neutral

Air Content

ASTM C231

Neutral

Density

ASTM C138

Neutral

Set Time

ASTM C403

Delayed

Flexural Strength

ASTM C78

Improved

Compressive Strength

ASTM C192

Improved

Corrosion Properties

ASTM C1582 ASTM G180

Meets Requirements

Biobased Content

ASTM D6866

67%

 

Workability

 

N/A

No adverse effects when used with pozzolans or other high performance concrete admixtures

ASTM C1582 PHYSICAL PROPERTY RESULTS

Setting Time

 

Control

MCI 2005

Relative to Control

ASTM C1582 Requirement

Result

Initial Set (Minutes)

312

431

+119

+/- 210 Min of Control

Meets Requirement

Final Set (Minutes)

404

524

+120

+/- 210 Min of Control

Meets Requirement

Compressive Strength

3 Day (psi)

3290

3647

111%

Min 80% of Control

Meets Requirement

7 Day (psi)

4070

4377

108%

Min 80% of Control

Meets Requirement

28 Day (psi)

5143

5330

104%

Min 80% of Control

Meets Requirement

6 Month (psi)

6077

6650

109%

Min 80% of Control

Meets Requirement

1 Year (psi)

6463

6877

106%

Min 80% of Control

Meets Requirement

Flexural Strength

3 Day (psi)

585

591

101%

Min 80% of Control

Meets Requirement

7 Day (psi)

661

691

104%

Min 80% of Control

Meets Requirement

28 Day (psi)

757

797

105%

Min 80% of Control

Meets Requirement

Shrinkage

Length Change (%)

-0.025

-0.021

0.004

Max 0.010 Over Control

Meets Requirement

Durability

Freeze/Thaw Durability

99.1

98.8

99.8

RDF 80%

Meets Requirement

ASTM C1582 CORROSION PROPERTIES - ASTM G180 RESULTS

 

Sample

Potential

Rp

1/Rp

 

Log (1/Rp)

 

Area (cm2)

Dosage

Mean 1/Rp

SD 1/Rp

 

Log (1/Rp)

 

Log SD

mV (SSC)

(Ohms)

(μS/cm2)

(L/m3)

(μS/cm2)

(μS/cm2)

Cortec®-1

-509

8192

23.85

1.38

5.12

 

 

0.60

 

 

38.91

 

 

21.29

 

 

1.33

 

 

0.29

Cortec®-2

-530.6

3626

53.96

1.73

5.11

Cortec®-3

-500.2

9373

20.85

1.32

5.12

Cortec®-4

-457.9

24360

8.10

0.91

5.07

Controls (13) Average of Results

 

-522.9 Average

 

 

0

 

394.71

 

214.21

 

2.49

 

0.35


The results from the inhibitor tests were compared to 13 control runs on the same steel heat, and using the same cement in lab database. The comparsison shows that MCI®-2005 reduces the corro- sion current (1/Rp) by a factor of ten so it meets the ASTM C1582 requirement of being 1/8 the value (49.3μS/cm2) of the control specimens without inhibitor.

ASTM G109 RESULTS

ASTM G109 - Standard Test Method for Determining Effects of Chemical Admixtures on Corrosion of Embedded Steel Reinforcement in Concrete Exposed to Chloride Environments

MCI®-2005 doubles the time to the onset of corrosion and reduces corrosion currents by 80% compared to untreated samples.

CONSIDERATIONS

The use of MCI®-2005 can cause a delay of initial setting time. The extent of this delay is dependent on the mix design, temperature and humidity. The combination of MCI®-2005 with certain superplasticizers can also increase the set delay experienced. Concrete properties are always best determined in a trial using the actual mix components. Cortec recommends a trial batch anytime you are using MCI®-2005 with new mix components.
Consult with Cortec’s Technic


Qingdao Cortec Rust Proof Materials Co., Ltd.,               

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Qingdao Cortec Rust Proof Materials Co., Ltd.,

Consultation hotline:0532-80989502

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E-mail:zzgvci@163.com

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Address:Room 2073, No. 12, chongmingdao East Road, Qingdao Economic Development Zone

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Procurement consulting:
Qingdao Cortec Rust Proof Materials Co., Ltd., the General Agent in China authorized by CORTEC Mobile phone:13505352885 Telephone:0532-80989502 Website:greattone.com.cn Mailbox:zzgvci@163.com Alibaba shop link click on the entrance Address:Room 2073, No. 12, chongmingdao East Road, Qingdao Economic Development Zone
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