SikaCor® VEL (NZ)

Approved as ‘Secondary containment system’ according to the principles of the DIBt, Germany, approval number Z-59. 12-69.

Vinylester resin + organic peroxide

SikaCor® VEL (NZ) solution: Three (3) months from date of manufacture when stored as stated.
SikaCor® VEL (NZ) hardener: Six (6) months from date of manufacture when stored as stated.

Store properly in original, unopened and undamaged sealed packaging, in dry conditions at temperatures between +5°C and +20°C. Protect from frost.

Solution:   ~1.09 kg/litre
Hardener: ~1.06 kg/litre

~ 73 N/mm²

THERMAL RESISTANCE

Short term moist/wet heat* up to +120°C, where exposure is only occasional (steam cleaning etc.)

According to the approval of the DIBt (German Institute of Building Technology), approval number Z-59. 12-69 for test groups 1,1a ,2 ,3 ,3a ,3b ,4 ,4a ,4b ,4c , 5, 5a, 5b, 6, 6b, 7, 7a, 8, 9, 9a, 10, 11, 12, 13, 14, 15 and 15a.
Additional building inspectorate approval for the following materials:

• Hydrochloric acid ≤ 37%
• Sulphuric acid ≤ 70%
• Nitric acid ≤ 65%
• Aqueous sodium hypochlorite (12% active chlorine)
• Hydrogen peroxide ≤ 30%
• Chromic acid ≤ 50%

Please ask the Sika Technical Department for a detailed chemical resistance list of SikaCor® VEL (NZ).

SikaCor® VEL (NZ), smooth finish on concrete and steel

SikaCor® VEL (NZ), anti-slip on concrete and steel

SikaCor® VEL (NZ), topcoat over Sikafloor® PurCem®

Note: These figures are theoretical and do allow for additional material required due to surface porosity, surface profile, variation in level or wastage etc. Due to availability and the indicated chemical and mechanical stress the type and amount of embedded glass fabric can be changed. Refer to Sika (NZ) Ltd.

Concrete must be sound and of sufficient compressive strength (minimum 25 N/mm²) with a minimum pull off strength of 1.5 N/mm². The  substrate must be clean, dry and free of all contaminants such as dirt, oil, grease, coatings and surface treatments etc. Steel must be clean, dry, free of rust and all contaminants such as dirt, oil, grease, coatings and surface treatments etc. If in doubt, apply a test area first.

Substrate Temperature : +5ºC min. / +35ºC max.
Ambient Temperature: +5ºC min. / +35ºC max.
Substrate Moisture Content : < 4% pbw moisture content. Test method: Sika Tramex meter, CM – measurement or Oven-dry-method. No rising moisture according to ASTM D4263 (Polyethylene-sheet)
Relative Air Humidity: 80% r.h. max.
Dew Point: Beware of condensation! The substrate and uncured floor must be at least 3°C above the dew point to reduce the risk of condensation or blooming on the floor finish.

Primer: SikaCor® VEL (NZ) Resin : Styrene Monomer : SikaCor® VEL (NZ) Hardener = 100 : 5 : 1.5 (by weight)
Scratch coat: SikaCor® VEL (NZ)L Resin: Styrene Monomer : SikaCor® VEL (NZ) Hardener: Sika Aggregate-501 = 100 : 5 : 1.5 : 80 (by weight)
Laminate layer and top coat: SikaCor® VEL (NZ) Resin: SikaCor® VEL (NZ) Hardener = 100 : 1.5 (by weight)

Mixing Time

Primer / Scratch coat: Prior to mixing, stir SikaCor® VEL (NZ) Resin mechanically. Add Styrene Monomer and remix. Add SikaCor® VEL (NZ) Hardener and mix continuously for 1 - 2 minutes until a uniform mix has been achieved.
Laminate layer and top coat: Prior to mixing, stir SikaCor® VEL (NZ) Resin mechanically. Add SikaCor® VEL (NZ) Hardener and mix continuously for 1 - 2 minutes until and uniform mix has been achieved. Over mixing must be avoided to minimise air entrainment.

Mixing Tools

SikaCor® VEL (NZ) and SikaCor® VEL (NZ) conductive must be thoroughly mixed using a low speed flash protected electric stirrer (300 - 400 rpm) or other  suitable equipment

Pot Life

Waiting Time / Overcoating

Prior to application, confirm substrate moisture content, relative humidity and dew point.
Primer:
Apply 1-2 primer coats of SikaCor® VEL (NZ) using brush or roller.
Scratch coat:
Rough surfaces need to be levelled first. Apply the scratch coat by trowel to the required thickness.
Laminate layer:
Apply the first layer of SikaCor® VEL (NZ) by roller, imbed the glass fabric, apply the second and the third layer in the same way, wet on wet. After application of the final glass fabric de-aerate and wet out the fibreglass mat using a laminating or a disk roller.
Top coat:
Apply SikaCor® VEL (NZ) by roller.
Notes:

1. During application a high air change rate has to be provided.
2. Water, even in the smallest amount, could affect the hardening and block the curing process. Tools and equipment have to be totally dry.

Clean all tools and application equipment with acetone immediately after use. Hardened and/or cured materials can only be removed  mechanically. Attention: Acetone is a flammable liquid, please handle with care, use all equipment for your personal protection required.