D007 – Acrylic Polymer (DURAKRIT)

Multipurpose acrylic polymer for waterproofing and repair with corrosion inhibitor DIFFUCIT® Technology

Description:

 DURAKRIT is an acrylic based cementitious liquid polymer with the state-of-the art DIFFUCIT technology designed for use as an additive with cementitious systems for bonding coat, waterproof coating and cement/sand mortars, screeds, etc.

Uses:

• As a bonding agent between old and new concrete, mortar, render, screed layers.
• As an adhesion promoter of render over insulation boards and similar materials.
• Waterproof, damp-proof, anti-carbonation/anti-efflorescence coating with cement slurry.
• As an additive for patching or mass-infill polymer mortar.
• As a bonding agent and additive for polymer modified mortars in structural repair applications.
• Waterproofing in overhead/underground concrete tanks, sunken portion of toilets/ bathrooms, roofs/ terraces/ basements etc.
• As an additive for injection grouting into cracks and fissures.
• Anti corrosive coating to steel/re-bar with cement.
• Protective layer/coating for cementitious surfaces over spill-way, bridge deck, pavement, garage, stair-treads, drains.
• For waterproof, abrasion resistant and chemical resistant surfaces in sewage treatment plants and industrial floors.
• Excellent long lasting waterproof/protective and decorative coating with cement paint, superior to virgin latex polymer/acrylic filler coating.

Features:

• Inbuilt DIFFUCIT technology helps in corrosion resistance
• Improves strength characteristics of cementitious systems allowing thin layer applications.
• Highly waterproof cementitious composite.
• Excellent bonding to the most building materials.
• Good breathability.
• Resilient and yet tough hardened cementitious film or mortar

Application Method:

1 SURFACE PREPARATION

The surface must be sound clean and free from oil, grease or other contaminants. Any loose materials, rust scale, dirt, laitance, etc shall be removed by suitable means. For areas affected by corrosion, any exposed reinforcement shall be treated with suitable anti-corrosive systems. The surfaces shall ideally be in Surface Saturated Dry (SSD) before application of DURAKRIT modified cementitious systems.

2 MIXING & APPLICATION

Mixing: The different proportions for various applications are given in the table below. In application as an additive with cement-sand mortars, dry mix the ingredients well before adding DURAKRIT and gauged water.

Application: Waterproofing coating: Apply the waterproofing slurry on the SSD surface with a brush. The second coat may be applied after 5 to 6 hours. Simple moist curing can be done after 10 hrs. For larger areas, glass fabric may be laid as a sandwich layer between the two coats. Protect the freshly laid surface from rain and heavy sun so that rapid drying out of coating is prevented. Traffic may be opened after two days. Care should be taken not to damage the coating during subsequent activities.

3 POST APPLICATION CHECKLIST FOR WATERPROOFING

• Conduct ponding test by filling water up to 50 mm height for 48 hours to ensure leak-free terrace.

Precautions and Limitations:

• All corners, gaps, joints, protrusions & outlets shall be coated with two extra coats.
• Do not apply during heavy sunshine, rains; or strong winds.
• Substrate MUST be in SSD condition for application of primer.
• The product shall be protected from any damages by suitable means.

Technical Data:

PARAMETERS	TEST METHOD	PROPERTIES
Fresh Wet Density, kg/m3		2000-2100
Pot life of the mixed material @ 30°C and @ 60% RH		20-30 minutes
Application Temperature		2° C -45° C
Adhesion Strength (28 days),kg/cm²	ASTM D 7234	9.0
Tensile Strength, (28 days),kg/cm²	ASTM D 522	45
Elongation at break, %	ASTM D 522	19.0
Carbonation resistance (3 weeks)	Taywood Method	Sc >150mm
Initial Surface water absorption,% (reduction against control)	BS 1881(Pt.5): 1983	90
Water Vapour permeability, perms	ASTM E-96	4.8
Water Permeability, mm	DIN 1048 (Pt. 5):1991	Withstands 20m water pressure head @ 1mm DFT

Coverage

 

Application	Cement (kg)	Sand (kg)	Durakrit (kg)	Typical Yield in Litres	Typical Coverage, m2 with X (mm) Thickness.
Bonding Coat	2	2 (Zone III)	1	2.5	3.5 (Single Coat), x=0.80
Waterproofing coating	2	–	1	1.6	2.50 (2 Coats), x=1.10
Repair/Tiling mortar /Quick Setting Polymer Mortar	2	5.5 (Zone II) (For quick set add Dura 3 @ 0.10 L	1	4.2	2.25 x=2
Heavy duty floor topping mortar	2	4.6 (Zone II) Gravel 6 mm = 4	1	5.6	1.15 x=10
Injection Grouting	2	Dura EV @250 gm/50 kg Cement	1	1.7	–

Packaging:

500 gm, 1 kg, 5 kg, 20 kg & 200 kg

Shelf Life:

Shelf life is 12 months from the date of manufacturing in unopened condition. Store in a cool & dry place.

Health & Safety:

• Skin Contact: Wash skin with soap & water. Remove contaminated clothes.
• On eye contact: Immediately splash eyes with plenty of water. Consult Physician if irritation persists.
• Ingestion: Do not induce vomiting. Never give anything by mouth to an unconscious person. Call a Physician.