Island Bay Sea Wall Repairs - Appendix B/media/your-council/projects/...Nitobond AR/HAR Nitoprime...

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Appendix B

Fosroc (SIKA NZ) Technical Data Sheets

Conbextra GP

Conbextra UW

Nitobond AR/HAR

Nitoprime Zincrich

Spencer Holmes Ltd September 2006 E060527

Conbextra GP

General purpose non-shrink cementitious grout

Uses

Conbextra GP has been formulated for general purpose grouting over a wide range of applications including heavy duty support beneath machine base plates, crane rails and stanchion bases. It is also an excellent anchoring grout for masts, anchor bolts, reinforcing bars, Reidbar Grout Sleeves, Drossbach tubes, etc.

Advantages

Ill Gaseous expansion system compensates for shrinkage and settlement in the plastic state.

1111 High early and ultimate strength ensure long term performance in service.

1111 Iron-free.

Ill Chloride-free.

1111 Pre-packaged needing only on site addition of water.

Description

Conbextra GP is supplied as a ready to use powder requiring only the addition of water to produce a free-flowing non-shrink grout for gap widths of 20-150 mm. Conbextra GP is a Class A Grout.

The material is a blend of cement, pre-graded fillers and additives which impart controlled expansion in the plastic state whilst minimising water demand. The low water requirement ensures high early strength and long term durability. The filler grading is designed to aid uniform mixing an-d minimise segregation and bleeding.

Technical support

Fosroc offers a comprehensive range of high performance, high quality repair, maintenance and construction products. In addition, Fosroc offers a technical support package to specifiers, end users and contractors, as well as on site technical assistance in locations all over the world.

Durability

Conbextra GP exceeds the 50 year minimum requirements of the durability provisions of the New Zealand Building Regulations 1992 Clause B2 providing:

(a) It is used in strict accordance with the manufacturer's recommendations.

(b) It is used within the design parameters stated in this data sheet.

(c) It is used in conjunction with other approved building systems and materials.

For conditions outside those stated in this data sheet, contact our Technical Advisory Service;

constructive solutions

Fosroc reserves the right to modify this time period, depending on but not limited to, climatic, site and environmental conditions such as chemical attack, abrasion, water immersion and adverse climatic and temperature conditions.

Limitations

Conbextra GP is designed as a grout only. It must not be used in any other application or situation.

Not for use in unconstrained areas.

Mixing ratios, methods, cure times and temperatures are critical to its performance.

Not for use in stressing cable ducts; use Conbextra HF for these purposes.

Conbextra GP is recommended for use only as described in the Uses section of this datasheet.

Properties

Compressive strength: Tested in accordance with BS1881

Variation with consistency at 20°C:

Age (days) Compressive strength N/mm2

Flowable Trowellable

7 14 28

26 55 60 64

55 70 76 81

Variation with temperature at flowable consistency:

Age (days) Compressive strength N/mm2

7 14 28

5°C 6

50 55 60

20°c 35°C

26 34 55 60

60 62

64 65

Flexural strength: For flowable consistency at 20°C, tested in accordance with BS4551

Age (days) Flexural strength N/mm2

2.5 7 9.0

14 9.5 28 10.0

Coefficient of thermal expansion: 11 x 10-s;oc

Conbextra GP

Thermal conductivity:

Young's modulus:

Fresh wet density:

Expansion characteristics:

Time for expansion:

Pressure to restrain plastic expansion:

1.5 W/m°C

29GPa

The fresh wet density when used

at flowable consistency is approximately 2170 kg/m3

An expansion of 1-4% overcomes

plastic settlement in the unset

material.

Start 15 mins

Finish 2 hours

Temperatures above 20°c may

slightly reduce these times.

Approximately 0.004 N/mm2 .

Note: Fosroc's Technical Advisory Service should be

consulted if more detailed information on the test methods and

physical properties of Conbextra GP is required.

Specification clauses

Performance Specification

All grouting (specify details and areas of application) must be

carried out with a prepackaged cement based product which shall be mixed with water on site to the required consistency.

The grout must not bleed or segregate, must be iron-free and

chloride-free. Expansion of 1-4% shall occur while the grout is

plastic by means of a gaseous system. The compressive strength of the grout must exceed 40 MPa at 7 days and 60

MPa at 28 days. The grout must be stored, handled and placed strictly in accordance with the manufacturer's

instructions.

Instructions for use

Preparation

Underplate grouting: Reference should be made to the design table (Table I) when determining the flow distance based on the gap width and fluid head. These should be

designed to ensure that the grout will flow through the gap as a continuous front.

The unrestrained surface area of the grout must be kept to a

minimum. Generally the gap width between the perimeter

formwork and the plate edge should not exceed I 50 mm on the pouring side and 50 mm on the opposite side.

The formwork should be constructed to be leakproof as

Conbextra GP is a free flowing grout. This can be achieved by

using foam rubber strip or mastic sealant beneath the

constructed formwork and between joints.

In some cases it is practical to use a sacrificial semi-dry sand

and cement formwork. The formwork should include outlets

for the pre-soaking water.

Table I. Max. Flow distance m mm

Grout Gap width 50mm 100mm 250mm

Consistency mm head head head

Flowable 20 200 950 1000

30 350 1500 2300

40 600 220 3000

50 900 3000 3000+

N.B: This table is based on the following factors:

- A temperature of 20°c.

- A minimum gap width of 20 mm.

- A water saturated substrate.

- A minimum unrestricted flow width of 300 mm.

Foundation surface: This must be free from oil, grease, or any loosely adherent material. If the concrete surface is

defective or has laitance, it must be cut back to a sound base. Bolt holes or fixing pockets must be blown clean of any dirt or

debris.

Base Plate: This must be clean and free from oil, grease or scale. Provide air pressure relief holes to allow venting of any

isolated high spots.

Levelling Shims: If these are to be removed after the grout has hardened, treat them with a layer of grease.

Pre-soaking: Several hours prior to grouting the area the cleaned foundation should be flooded with fresh water.

Immediately prior to grouting remove any free water. Care should be taken to blow out all bolt holes and pockets.

Mixing

Do not mix part bags.

The quantity of water required to achieve the desired consistency is precise, and the volume used should be in

accordance with the table below.

Desired mix consistency

Dry pack

Plastic

Flowable

Water in litres per 25 kg bag

2.25-2.75

4 5

Water percentage by weight required

9 i6 20

For best results a mechanically powered grout mixer should be

used. For quantities up to 50 kg a slow speed drill fitted with a

Fosroc No. 4 Mixing Paddle (Galvanised steel spiral paddle) is

suitable. Larger quantities will require a high shear vane mixer.

The need to observe the accurate gauging of water addition

and the stated mixing time should be stressed to all operators.

The selected water content should be accurately measured

into the mixer. Slowly add the total contents of the Conbextra

GP pack and mix continuously for 5 minutes ensuring a smooth even consistency.

Pass the mixed grout through a 5 mm sieve to remove any lumps prior to placing.

Application Temperature Limitations

Cold Weather Grouting - Normal precautions for winter

working with cementitious material should be adopted. The

temperature of the grout and all elements coming into contact with it should be above the lower application temperature limit

of 5°C. Below this limit it is essential to condition the water, powders and substrate to raise the temperature (ideally to 20°C) before applying the grout.

Hot Weather Grouting - Conbextra GP must not be applied under hot windy conditions where premature setting and

drying out is likely to occur. Adequate protection by wind shields, saturation cooling of the substrate and storage

conditioning of the powder and gauge water must be provided to lower the temperature to below the upper application

temperature limit of 28°C. This will assist in ensuring proper

grout functioning under these conditions.

Placing

Place the grout within 20 minutes of mixing to gain the full

benefit of the expansion process.

Conbextra GP may be placed in thicknesses up to 150 mm

in a single pour when used as an underplate grout. For thicker sections it is necessary to fill out Conbextra GP with well graded 10 mm silt and sand free aggregates to

minimise temperature rise. The quantity of aggregate should

not exceed 1 part aggregate to 1 part Conbextra GP by weight. For such mixes a conventional concrete mixer and

pump should be used. Consult Fosroc Technical Advisory Service for further details.

Continuous grout flow is essential. Sufficient grout must be available prior to starting and the time taken to pour a batch

must be regulated to the time taken to prepare the next one.

Pouring should be from one side of the void to eliminate the

entrapment of air or surplus pre-soaking water. The grout

head must be maintained at all times so that a continuous grout front is achieved.

Where large volumes have to be placed Conbextra GP may be

pumped. A heavy duty diaphragm pump is recommended for this purpose.


Cleaning

Conbextra GP should be removed from tools and equipment

immediately after use with clean water. Cured material can be removed mechanically or with an acid etch solution.

Specific Applications

Grouting under base plates: Use flowable consistency.

Grouting anchor bolts: Use trowellable consistency.

Grouting large volumes: For sections thicker than 150 mm it is necessary to fill out the Conbextra GP with equal parts by

weight of well graded 10 mm silt and sand free aggregate to

minimise temperature rise. Consult Fosroc Technical Advisory Service for further details.

Estimating

Packaging

Conbextra GP is supplied in 25 kg moisture resistant, multi-ply bags.

Yield

This depends on the required consistency. The approximate yield per 25 kg bag at each consistency is as follows:

Consistency Dry Pack Trowellable Flowable

Yield per 25 kg

bag (litres) 12 13.75 14

Yield (kg/m3) 2100 1825 1775

Yield (no. of 25 bags per m3) 84 73 71

Allowance should be made for wastage when estimating.

Storage

Conbextra GP has a shelf life of 12 months if kept in a dry

store in sealed bags. If stored in high temperature and high

humidity locations the shelf life may be reduced.

If subjected to extended storage or if there is any doubt about the conditions of storage and handling, a preliminary test

application must be made to ensure that the grout has not

been subjected to deteriorating influences which may cause malfunctioning.

Conbextra GP

Health and safety

Warning

Conbextra GP may be harmful if swallowed or inhaled and

may cause skin or eye irritation. It contains cement powder which when wet is alkaline and can cause burns to the skin

and respiratory tract.

Precautions

Disposal

If spilt, absorb with clay, sand or earth. Collect and seal in

properly labelled metal containers. Dispose of according to

local authority regulations. Do not dispose of down drains or

into local waterways.

Fire

Conbextra GP is non-flammable.

Wear an approved dust mask, PVC gloves and eye protection when mixing or using.

Additional information

Fuller details on each of the products mentioned are available

on the product Material Safety Data Sheets. To ensure no

harm is caused to persons using Fosroc products, it is recommended that the appropriate Material Safety Data

Sheets are read by all concerned. Contact Fosroc for copies.

First Aid

Swallowed: Do not induce vomiting, give a glass of water to

dilute and contact a doctor immediately.

Skin: Remove contaminated clothing, wash skin with warm soapy water. Do not scrub.

Inhaled: Remove person to fresh air. Get medical advice if breathing becomes difficult.

Eyes: Hold eyes open and flood with water for at least ~ 5

minutes. Get medical advice.

For emergency information contact the National Poisons Information Centre, phone 0800 764 766 (0800 POISON).

Important note

Conbextra GP is one product in the Fosroc range of grouts. Other product ranges include concrete surface treatments,

concrete repair and protection, below ground waterproofing,

joint sealants, flooring, roofing, adhesives and architectural coatings.

Conbextra GP is the trademark of Fosroc International Limited.

Fosroc products are guaranteed against defective materials and manufacture and are sold subject to the company's terms and conditions of sale, a copy of which may be obtained on request. Whilst Fosroc endeavours to ensure that this technical information is correct at the time of printing, it is the customer's responsibility to satisfy themselves by checking with the compay that this information is still accurate at the time of use, that the product is suitable for the intended application, and that the actual conditions of use are in accordance with those recommended. Because Fosroc has no control over the conditions

Fosroc Limited Head Office and Factory 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 8046 Fax +64 4 568 8043 Email [email protected]

www.fosroc.com

of use of its products, all recommendations or suggestions regarding the use of these products are made without guarantee.

Auckland Regional Office 4 Hotunui Drive Mt Wellington, Auckland PO Box494 Auckland 1250 Tel +64 9 273 9292 Fax +64 9 273 9393

Wellington Regional Office 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 7965 Fax +64 4 568 5326

Technical Advisory Service Hotline - Fax 04 568 8476

Christchurch Regional Office 28 Byron Street Sydenham, Christchurch PO Box4190 Christchurch Tel +64 3 366 8194 Fax +64 3 379 4624

June 2000

NZ/C7/04

Conbextra UW

Non-shrink cementitious grout for underwater applications

Uses

Conbextra UW has been formulated for use in free flow or

pumped grouting applications underwater or in tidal zones. There will be no significant 'wash-out' of the cement phase.

Applications include bridge columns, quay pillars, concrete piling, slipways and dams.

Advantages

1111 No risk of significant 'wash-out' of cement phase when

placed underwater.

1111 Displaces water effectively.

Ill Gaseous expansion system compensates for shrinkage

and settlement in the plastic state.

1111 High early and ultimate strength and exceptional

resistance to freeze-thaw cycling ensure durability of the

hardened grout.

1111 Chloride free.

1111 Packed needing only on site addition of water.

Description

Conbextra UW is supplied as a ready to use dry powder requiring only the addition of water to produce a free flowing,

non shrink grout. Conbextra UW exhibits exceptional resistance to 'washing-out' of the cement phase when placed

in stationary or moving water. The material is a mixture of specifically processed cement with carefully graded fine

aggregates. Additives impart controlled expansion, water reduction and non 'wash-out' characteristics. The aggregate

grading is designed to aid uniform mixing, minimise

segregation and bleeding whilst assisting the flow characteristics.

Technical support

Fosroc offers a comprehensive range of high performance,

high quality repair, maintenance and construction products. In addition, Fosroc offers a technical support package to

specifiers, end users and contractors, as well as on site technical assistance in locations all over the world.

Durability

Conbextra UW exceeds the 50 year minimum requirements of the durability provisions of the New Zealand Building

Regulations 1992 Clause 82 providing:

(a) It is used in strict accordance with the manufacturer's

recommendations.

(b) It is used within the design parameters stated in this data

sheet.

(c) It is used in conjunction with other approved building

systems and materials.


For conditions outside those stated in this data sheet, contact

our Technical Advisory Service.

Fosroc reserves the right to modify this time period, depending

on but not limited to, climatic, site and environmental conditions

such as chemical attack, abrasion, water immersion and

adverse climatic and temperature conditions.

Limitations

This product is designed as a grout only. It must not be used in any other application or situation.

Not for use in unconstrained areas.

Mixing ratios, methods, cure times and temperatures are

critical to its performance.

Conbextra UW is recommended for use only as described in

the Uses section of this datasheet.

Properties

Compressive strength: To simulate site conditions, compressive strength test cubes

were cast under water and under restraint.

Compressive strength N/mm2

Grout Temperature

1 day

3 days 7 days

28 days

Adhesion to submerged concrete:

Coefficient of thermal expansion:

Density of hardened grout:

20°C 5°C

25 38 44 53

6 24 36 50

To simulate site conditions,

direct tensile specimens were prepared under water and under

restraint. The specimens were

cured submerged for 14 days at 20°c at time of test. The tensile strength of the substrate

concrete was 3.1 N/mm2 • Direct tensile bond strength was

2.1 N/mm2 •

11 x 10-6/°C

2050 kg/m3

Conbextra UW

Setting time: Dependent on temperature. Typical values are as follows:

Grout setting time (to BS5075)

Initial Final

Temperature limitation:

Freeze-thaw stability:

Expansion characteristics:

Pressure to restrain expansion:

Specification

Performance specification

Temperature 20°C 5°C

4.5 hrs 5.5 hrs

12 hrs 16.5 hrs

Should not be applied below 3°C

Meets the requirements of BS5075, Part 2, 1982

Controlled expansion occurs in the unset material to ensure that the grout, when cured, will continue to occupy its original volume within the confines of the void in which it is placed.

Approx 0.004 N/mm2

All grouting (specify details and areas of applications) must be carried out with a pre-packaged cement based product, which shall be mixed with water on site at a water/powder ratio of 0.22. The grout shall contain special admixtures to minimise washout in underwater applications. The compressive strength of the grout must exceed 30 N/mm2 at 7 days and 50 N/mm2 at 28 days. The grout must be stored, handled and placed strictly in accordance with the manufacturer's instructions.

Application instructions

Preparation

The substrate must be clean and sound. All loose material must be removed. Substrates which are permanently immersed should be sandblasted or cleaned with a high pressure water jet. Non-immersed or intermittently immersed substrates can also be prepared using these techniques. Depending on the circumstances, scabbling or needle hammering may be appropriate.

In view of the fluid nature of Conbextra UW, all shuttering must be grout-tight. This can be achieved using foam rubber sealing strips at the edges. Grout should not be applied below 3°C.

Mixing

The quantity of water required to achieve a fluid consistency must be accurately measured for each mix. Each 25 kg bag requires 5.5 litres of water.

A mechanical powered grout mixer MUST be used with a Fosroc No. 4 Mixing Paddle (galvanised steel spiral paddle). Ensure that the machine capacity and the number of operators is adequate to enable grouting to be carried out as a continuous operation.

Place the specified amount of water in the mixer. Slowly add the contents of the Conbextra UW pack mixing continuously. When all contents are added, mix continuously for a minimum of 5 minutes making sure that a smooth even mix is obtained. (Fluidity increases with increased mixing.) Pass the mixed grout through a 5 mm sieve to remove any lumps prior to placing.

Important: The need to observe the accurate gauging of water addition and the stated mixing time should be stressed to all operators and, wherever possible, included in specifications.

Application

Place the grout within 20 minutes of mixing to gain full benefit of the expansion process. Continuous grout flow is required and the grout should be poured or pumped through a flexible tube, minimum diameter 50 mm, to the lowest point in the form. At the start of the operation the grout flow should be restricted in order to avoid any water entrapment.

The bottom of the tube may be raised as necessary to reduce any back pressure but should not be raised above the level of the grout.

Application thickness

Conbextra UW may be placed in thicknesses up to 100 mm in one pour when placed above water. When placed under water the heat sink effect in this environment permits thicknesses up to 180 mm to be placed. For thicker sections up to 250 mm above water and 450 mm under water, it is necessary to 1111 out Conbextra UW using a clean, rounded and well graded aggregate in the size range 2 mm up to 10 mm. The quantity of aggregate added should not exceed 1 part aggregate to 1 part Conbextra UW by weight. For such mixes a concrete mixer must be used. Unrestrained surface area should be kept to a minimum.

Curing

Curing will not be required in intermittently or totally submerged conditions. However, when cast above water, all exposed surfaces should be thoroughly cured.

Cleaning

Because of Conbextra UW's water resisting properties,

equipment used will be harder to wash than with a cementitious grout. Use of hot water greatly reduces the time

required for cleaning. DO NOT USE hot water for mixing with

Conbextra UW.

Estimating

Packaging

Conbextra UW is supplied in 25 kg moisture resistant,

multi-ply bags.

Yield

Yield (per 25 kg bag): 14.5 litres

Allowance should be made for wastage when estimating.

Storage

Conbextra UW has a shelf life of 12 months if kept in a dry store in sealed bags. If stored in high temperature and high

humidity locations shelf life may be reduced. If subject to

extended storage, and/or if there is any doubt about the conditions of storage and handling, a preliminary test

application must be made to ensure that the grout has not been subject to deteriorating influences causing malfunctioning.

Health and safety

Warning

Conbextra UW may be harmful if swallowed or inhaled and

may cause skin or eye irritation. It contains cement powder

which when wet is alkaline and can cause burns to the skin and respiratory tract.

Precautions

Wear an approved dust mask, PVC gloves and eye protection

when mixing or using.

Fuller details on each of the products mentioned are available

on the product Material Safety Data Sheets. To ensure no

harm is caused to persons using Fosroc products, it is

recommended that the appropriate Material Safety Data Sheets are read by all concerned. Contact Fosroc for copies.

First Aid



Skin: Remove contaminated clothing, wash with warm soapy

water. Do not scrub.

Inhaled: Remove person to fresh air. Get medical advice if

breathing becomes difficult.

Eyes: Hold open and flood with water for at least 15 minutes. Get medical advice.


For emergency information contact the National Poisons

Information Centre, phone 0800 764 766 (0800 POISON).

Disposal

Dispose of according to local authority regulations. Do not dispose of down drains or into local waterways.

Fire

Conbextra UW is non-flammable.


Conbextra UW is one product in the Fosroc range of grouts

and anchors. other product ranges include admixtures, surface treatments, concrete repair and protection, joint

sealants, waterproofing, flooring, roofing, adhesives and architectural coatings.

Conbextra UW

Fosroc Limited Head Office and Factory 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 8046 Fax +64 4 568 8043 Email [email protected]

www.fosroc.com

Conbextra UW is the trademark of Fosroc International Limited.

Important note Fosroc products are guaranteed against defective materials and manufacture and are sold subject to the company's terms and conditions of sale, a copy of which may be obtained on request. Whilst Fosroc endeavours to ensure that this technical information is correct at the time of printing, it is the customer's responsibility to satisfy themselves by checking with the compay that this infonnation is still accurate at the time of use, that the product is suitable for the intended application, and that the actual conditions of use are in accordance with those recommended. Because Fosroc has no control over the conditions of use of its products, all recommendations or suggestions regarding the use of these products are made without guarantee.




Christchurch Regiorial Office 28 Byron Street Sydenham, Christchurch PO Box4190 Christchurch Tel +64 3 366 8194 Fax +64 3 379 4624

April 2000

NZ/C14/05

Nitobond AR/HAR

Single component concrete repair primers

Uses

Nitobond AR and Nitobond HAR are recommended primers

for the Fosroc Concrete Repair System.

Specifically, Nitobond AR is to be used with Fosroc's rapid

set high strength cementitious concrete repair compound, Patchroc C.

Nitobond HAR is designed specifically for use with Renderoc

HB25 and Renderoc HB40, Fosroc's high build, polymer

modified repair mortars for overhead and vertical repairs.

Advantages

11111 Single component - no mixing required on site.

11111 Easy to use - ready to use as supplied straight from the

container.

1!111 High bond strength - excellent bond strength between polymer modified mortars and concrete.

II Excellent grab - Nitobond HAR is specifically designed for optimum build of Renderoc HB25 and Renderoc HB40 in vertical and overhead applications.

1111 Versatile - easy to use on site. Suitable for both internal and external use.

1111 Curing aids - can be used as curing membranes for Fosroc's Renderoc range.

Description

Nitobond AR and Nitobond HAR are single component white, milky emulsions based upon modified acrylic type resins.

Nitobond AR is designed for use with Patchroc C.

Nitobond HAR is designed for use with Renderoc HB25 and Renderoc HB40.

Both products are resistant to hydrolysis and therefore can

be used in external or internal applications. For permanently

immersed conditions consult Fosroc's Technical Advisory Service.

Technical support

Fosroc offers a comprehensive range of high performance, high quality repair, maintenance and construction products.

In addition, Fosroc offers a technical support package to

specifiers, end users and contractors, as well as on site

technical assistance in locations all over the world.

IL.imitations

Do not use Nitobond AR/HAR when the temperature is below

5°C or 5°C and falling.

Nitobond AR and Nitobond HAR are only recommended for

use as described in the Uses section of this data sheet.


Properties

The curing efficiency of Nitobond AR and Nitobond HAR was measured to DOT Clause 2709 modified to include mortar

pre-drying period.

Nitobond AR: Nitobond HAR:

58% curing efficiency 63% curing efficiency


Nitobond AR and HAR are integral parts of the Fosroc

Concrete Repair System.

As a bonding agent:

Nitobond AR and HAR are both supplied ready for use. Do

not dilute with water or solvents of any kind. Pour liquid into a suitable container ready for application onto previously

prepared substrate.

Successful repairs to reinforced concrete depend on the

correct surface preparation. Mechanically remove all contaminated, loose, or damaged concrete as required.

Expose the full circumference of any corroded reinforcing steel. It is recommended that all repair areas should be

defined by a 10 mm saw cut to avoid 'feather edging' of the

repair mortars. All fine, loose debris should be removed by

oil-free compressed air.

Finally, pre-soak the repair zone with copious amounts of

clean water preferably for a minimum of 1 hour prior to

application of the Nitobond AR and Nitobond HAR. Remove excess surface water with a stiff brush.

Nitobond AR and HAR are simply applied by brush ensuring

the complete surface is wetted out. Use of a 'stippling' action rather than a 'painting' action is recommended. Patchroc C,

Renderoc HB25 and Renderoc HB40 should be applied

whilst the primer is wet or tacky.

Surfaces that have dried out can be reprimed once.

Warning: DO NOT over apply Nitobond HAR as slippage of

the repair mortar may occur in high build applications.

As a curing aid:

Nitobond AR can be spray applied as a curing aid to

Renderoc repair mortars giving a curing efficiency of

approximately 58% when tested in accordance with DOT Clause 2709 to include mortar pre-drying period. Nitobond

HAR can only be applied by brush. In both cases it is

important to ensure that a continuous film is applied.

In harsh drying conditions additional curing precautions such as wet hessian, polythene or ponding should be used.

Nitobond AR and Nitobond HAR can be overcoated by

Fosroc Dekguard, the anti chloride, anti carbonation coating

system which completes the Fosroc Concrete Repair System.

Nitobond AR/HAR

Cleaning

Wash all brushes and equipment with clean water.

Estimating

Packaging

Nitobond AR and Nitobond HAR are supplied in 1 litre and 5 litre containers.

Coverage

As a bonding agent:

As a curing aid:

Storage

Nitobond AR: Nitobond HAR:

6-8 m2/litre 3-4 m2/litre

Coverage rates for both products will be dependent on substrate.

Nitobond AR: 4-5 m2/litre Nitobond HAR: 4-5 m2/litre

The shelf life of both Nitobond AR and Nitobond HAR is 12 months if stored at 20°c.

Protect from frost. Do not use iffrozen, discard and do not attempt to thaw.

Health and safety

Warning

Nitobond AR and HAR are slightly alkaline, avoid contact with the skin and eyes.

Precautions

Wear protective PVC gloves and eye protection when using.

Important note

Fuller details on each of the products mentioned are available on the product Material Safety Data Sheets. To ensure no harm is caused to persons using Fosroc products, it is recommended that the appropriate Material Safety Data Sheets are read by all concerned. Contact Fosroc for copies.

First Aid

Swallowed: Do not induce vomiting, give a glass of water to dilute and contact a doctor immediately.

Skin: Remove contaminated clothing, wash with warm soapy water. Do not scrub.

Eyes: Hold open and flood with water for at least 15 minutes. Get medical advice.

For emergency information contact the National Poisons Information Centre, phone 0800 764 766 (0800 POISON).

Disposal

If spilt, absorb with clay, sand or earth. Collect and seal in properly labelled metal containers. Dispose of according to local authority regulations. Do not dispose of down drains or into local waterways.


Nitobond AR and Nitobond HAR are two products in the Fosroc range of concrete repair and protection. Other product ranges include admixtures, concrete surface treatments, waterproofing, grouts, sealants, roofing, flooring, adhesives and architectural coatings.

Nitobond AR and Nitobond HAR are the trademarks of Fosroc International Limited.

Fosroc products are guaranteed against defective materials and manufacture and are sold subject to the company's terms and conditions of sale, a copy of which may be obtained on request. Whilst Fosroc endeavours to ensure that this technical information is correct at the time of printing, it is the customer's responsibility to satisfy themselves by checking with the compay that this information is still accurate atthe time of use, that the productis suitable for the intended application, and that the actual conditions of use are in accordance with those recommended. Because Fosroc has no control over the conditions

Fosroc Limited Head Office and Factory 69 Waione Street Petone, Lower Hutt PO Box38 079 Wellington MC 6332 Tel +64 4 568 8046 Fax +64 4 568 8043 Email [email protected]

www.fosroc.com



Wellington Regional Office 69 Waione Street Petone, Lower Hutt PO Box38 079 Wellington MC 6332 Tel +64 4 568 7965 Fax +64 4 568 5326



November 1998 NZ/N3/04

Nitoprime Zincrich

Zinc based anti-corrosion primer

Uses

Nitoprime Zincrich has been formulated for use as the anti-corrosion primer for steel reinforcement in the Fosroc

Concrete Repair System.

Nitoprime Zincrich actively resists corrosion in the repaired

area, and also aids the prevention of corrosion in adjacent areas.

Nitoprime Zincrich can also be used for coating steel gutters,

downpipes, roofing, etc, to prated against rust, and when

repairing wrought iron, steel window frames, or steel fretwork. It can be used as either a primer for decorative paints or a

self-finish. See Limitations.

Nitoprime Zincrich can also be used as a touch up primer for galvanised high voltage transmission towers, bridges and

structural steelwork.

Advantages

• Single component, easy to use.

II Time saving, touch dry after 45 minutes and recoatable after 2 hours.

• Economical, one pack system ensures no site wastage.

Description

Nitoprime Zincrich is supplied as a single component grey coloured primer based on zinc and epoxy resins. Sacrificial cathodic action in the coating inhibits the formation and

spread of rust, even if the coating is pinholed or damaged.

Technical support

Fosroc offers a comprehensive range of high performance,

high quality repair, maintenance and construction products.

In addition, Fosroc offers a technical support package to specifiers, end users and contractors, as well as on site

technical assistance in locations all over the world.

Durability

When applied externally, the durability of Nitoprime Zincrich will vary, depending on conditions of use. Contact Fosroc's

Technical Advisory Service for further information.

Limitations

Some paints are not compatible with Nitoprime Zincrich. Test

a small area to check compatibility.

Nitoprime Zincrich is recommended for use only as described

in the Uses section of this datasheet.


Properties

Specific gravity: 2.0

Volume solids: 30%

Recommended thickness: 40 µm dry

Application thickness:

Application temperature:

Number of coats:

Drying time:

Touch dry

Fully dry/recoatable

Design Criteria

135 µm wet

Minimum 5°C

One (a second coat may be

be applied where the first coat is uneven or discontinuous)

At 20°c

45 mins 1.5-2 hours

At 35°C

15 mins

30 mins-1 hour

One or two coats of Nitoprime Zincrich are generally required,

dependent largely on the nature and profile of the substrate. Nitoprime Zincrich is recoatable generally in 1 .5 to 2 hours

after the initial application. Application of concrete repair

materials may also proceed at this time. At elevated temperatures, the recoatable and overlay times will be

reduced.

Specification clauses

Steel reinforcement primer

The steel reinforcement primer shall be Nitoprime Zincrich, a

single-component zinc-rich liquid packed and supplied ready to use. It shall be applied strictly in accordance with Fosroc's

current written instructions. An unbroken 40 microns thick

coating shall be achieved.


Preparation

Corroded steel should be exposed around its full

circumference and cleaned to remove all loose scale and

corrosion deposits. It is always preferable to clean the steel to

a bright condition. Grit blasting is recommended.

Some chemical cleaners are based on phosphoric acid which

leaves an electrically insulating film. This film must be completely removed prior to painting with Nitoprime Zincrich.

Mixing

Nitoprime Zincrich should be stirred before use to re-disperse

the heavy zinc deposits.

Application

The application of Nitoprime Zincrich must take place as soon

as possible to a dry steel surface after completion of the

preparation work but always within 3 hours.

Nitoprime Zincrich

Nitoprime Zincrich should be brushed onto the entire

circumference of exposed reinforcing steel, making sure that a full unbroken film is achieved including to the back of the steel.

If any doubt exists about having achieved an unbroken

coating, a second application should be made as soon as the

first coat is fully dry (generally after 2 hours). The primed

surface should not be exposed to the elements for longer than necessary before overcoating or application of the repair

mortar.

Prior to applying the repair mortar, Nitoprime Zincrich will

protect steel under clean interior exposure conditions for a period of several months. In non-aggressive exterior

conditions a maximum of 14 days can be tolerated, but in industrial and/or marine conditions this interval should be

reduced to the practical minimum. Application of concrete

repair materials may proceed when the Nitoprime Zincrich is completely dry, generally after 1.5 to 2 hours at 20°C.

Cleaning

Tools may be cleaned with either Fosroc TCN Thinners or Fosroc Solvent 102.

Estimating

Packaging

Nitoprime Zincrich is supplied in 1 litre containers.

Coverage

Nitoprime Zincrich: 7.4m2/litre or 3.7m2/kg

Note: This coverage figure is theoretical - practical coverage may be significantly less, dependent upon the nature of the

substrate and method of application.

Storage

Shelf life 12 months if stored in a cool, dry place in unopened tins.

Important note

Health and safety

Warning

Nitoprime Zincrich is flammable and may be harmful if swallowed or inhaled and may cause skin or eye irritation.

Precautions

Wear protective (PVC) gloves and eye protection when mixing or using. Epoxy materials are skin sensitising to some people.

Use only in well ventilated areas away from heat, sparks and

naked flames.

Fuller details on each of the products mentioned are available on the product Material Safety Data Sheets. To ensure no

harm is caused to persons using Fosroc products, it is recommended that the appropriate Material Safety Data

Sheets are read by all concerned. Contact Fosroc for copies.

First Aid



Skin: Remove contaminated clothing, wash with warm soapy water. Do not scrub.

Inhaled: Remove person to fresh air. Get medical advice if breathing becomes difficult.

Eyes: Hold open and flood with water for at least 15 minutes.

Get medical advice.

For emergency information contact the National Poisons

Information Centre, phone 0800 764 766 (0800 POISON).

Disposal

If spilt, absorb with clay, sand or earth. Collect and seal in properly labelled metal containers. Dispose of according to

local authority regulations. Do not dispose of down drains or

into local waterways.


Nitoprime Zincrich is one product in the Fosroc range of

concrete repair and protection. Other product ranges include admixtures, concrete surface treatments, waterproofing,

roofing, grouts, sealants, flooring, adhesives and architectural

coatings.

Nitoprime Zincrich is the trademark of Fosroc International Limited.

Fosroc products are guaranteed against defective materials and manufacture and are sold subject to the company's terms and conditions of sale, a copy of which may be obtained on request. Whilst Fosroc endeavours to ensure that this technical information is correct at the time of printing, it is the customers responsibility to satisfy themselves by checking with the com pay that this information is still accurate at the time of use, that the product is suitable for the intended application, and that the actual conditions of use are in accordance with those recommended. Because Fosroc has no control over the conditions

fosroc Limited Head Office and Factory 69 Waione Street Petone, Lower Hutt PO Box 38 079 Wellington MC 6332 Tel +64 4 568 8046 Fax +64 4 568 8043 Email [email protected]

www.fosroc.com






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