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Gard 12

DESCRIPTION:

AT-GARD 12 is an elastic, liquid applied crack bridging; 2-pack acrylic polymer modified cementitious waterproofing coating system.

USES:

AT-GARD 12 is an economical and easy-to-use system having following uses:

  • Can be used as a seamless, impervious coating on flat roof for both exposed and concealed waterproofing applications
  • Suitable for basements, water retaining structures, underground concrete structures, pits, basins, sumps etc.

STANDARDS:

It complies with IS: 2625, IS 101 and ASTM D 2370

ADVANTAGES:

  • Crack-bridging property
  • Elastic in nature
  • Possesses good impermeability against water ingress
  • Highly water resistant, arrest saltpetre and prevent carbonation
  • AT-GARD 12 demonstrates good bonding with high abrasion resistance
  • Easy to use and fast curing
  • AT-GARD 12 exhibits excellent adhesion to concrete, brickwork, corrugated asbestos, and asbestos cement

CONSUMPTION / DOSAGE:

  • Approximately 0.70 kg / m² (1st coat), 1.50 kg / m² (2nd coat) [consumption may vary for uneven / absorptive surface]

APPLICATION: SURFACE PREPARATION

  • The substrate must be structurally sound and free of all traces of contaminants, loose and friable particles, cement laitance, oil and grease, etc.
  • The substrate must be prepared by suitable mechanical preparation techniques such as high pressure water jetting, needle guns, blast cleaning etc. and properly pre-wetted to a saturated surface dry (SSD) condition. For pore / blowhole filling blast clean all contaminants within pores / blowholes.

MIXING:

  • As slurry : Component A : Component B = 1 : 2 (by weight)
  • Lump free mixing is desired.

APPLICATION DETAILS:

  • Dampen all surfaces immediately ahead of AT-GARD 12 application. Whilst the surface is still damp from saturation, apply the first coat and leave to harden (2-6 hrs.). For slurry consistency apply with a hard plastic bristled brush or broom. For trowel-able mortars use a notched trowel. After the second coat has been applied, finish by rubbing down with a soft, dry sponge.
  • As Slurry: Apply the mixed AT-GARD 12 either mechanically, by spray or by hand using a stiff brush. Apply in the same direction. Apply the 2nd coat of AT-GARD 12, applied by brush in crosswise direction to the first application as soon as first coat has hardened.

IMPORTANT RECOMENDATIONS:

  • Substrate Temperature: + 10⁰ C min / + 40⁰ C max
  • Ambient Temperature: + 10⁰ C min / + 40⁰ C max
  • Waiting time between coats: @ + 30⁰ C approximately 5 hrs

CLEANING

  • Clean all tools and application equipment with clean water immediately after use.
  • Hardened / cured material can only be removed mechanically.

CURRING

  • It is essential to cure AT-GARD 12 immediately after application for a minimum of 3 to 5 days to ensure full cement hydration and to minimise cracking. Use polythene sheeting or similar approved methods.

TECHNICAL DATA:

FORM Comp. A – White Liquid; Comp. B – Grey Powder
COLOUR OF MIX Grey
CHEMICAL BASE Comp. A – Acrylic Co-polymer; Comp. B – Specially graded cementitious powder
DENSITY (@ 27⁰ C) A + B (mixed) = 1.6 kg/l approximately
MIXING RATIO A : B = 1 : 2 by weight
TENSILE STRENGTH (AS PER ASTM D 412) ~ 2 N/mm² after 28 days
ELONGATION AT BREAK (AS PER ASTM D 412) 40%
WORKABLE TIME (@ 27⁰ C) 30 minutes
WATER PERMEABILITY (AS PER IS 2645) Passes
WATER ABSORPTION Negligible

PACKAGING & STORAGE:

  • AT-GARD 12 is available in the following pack:
    • 30 kg PACK (COMP A 10 kg & COMP B 20 kg)
  • Shelf life is 6 months in sealed containers as provided
  • Protect AT-GARD 12 from direct sunlight
  • Keep packing sealed and away from heat and cold in a well ventilated area

HEALTH & SAFETY:

  • Protect hands with rubber gloves and eyes with goggles.
  • Accidental splashes to the skin or eyes must be rinsed immediately with clean water or boric acid solution.
  • Store in well-labeled containers.