Description

This product is HDPE membrane with unique pressure sensitive adhesive and selected hard wearing mineral aggregates to enable good adhesion with concrete surfaces in chemical and mechanical bonds and becomes monolithic to the overlying layer of fresh concrete.

This product forms a unique integral seal around theconcrete poured against it, prevents water ingress even under high hydrostatic pressure and prevents lateral water migration as well.

It remains fully adhered to con­ crete (i.e. monolithic) helping retain its performance even when there is ground settlement beneath the slabs.SikaProof®-7311.2 mm comes with dual adhes­ive tape lap seam technology enabling high perform­ance joints even in damp conditions.

CHARACTERISTICS/ ADVANTAGES

  • Dual Lap- Improves Lap adhesion and lap formation even in damp conditions.
  • Fully Adhered to Poured Concrete – Prevents later water migration between concrete and membrane
  • Uniform distribution of mineral particulates-Enables improved protection of pressure sensitive adhesive from UV
  • Unaffected by hydrostatic pressure – Can be used in high water table areas
  • Unaffected by Contamination – Does not require any special protection during construction – can be easily cleaned with water and high-pressure air sub-soil conditions, even if contaminated with salts.
  • Simple and Easy to Install – Does not require special tools and welding techniquesChemically resistant – Can be used in all soil and
  • Fully adhered watertight overlaps – Ensures water tightness
PRODUCT INFORMATION

Product declaration: Bonded sheet membrane according to IS 16471: 2017
Chemical base: HDPE sheet membrane with adhesive layer and sand topping
Packaging:
SikaProof•-7311.2 mm: 1.2 mm (W) x1.2mm (T) x2-0m (L)
SikaProoftD-936 (Double side tape): 80 mm (W) x 8 mm(T) x 20m rolls
SikaProoftD-937/S {Single Side tape): 120 mm (W) x 8 mm(T) x 20m rolls

Shelf life: 12 months from the date of production

Storage conditions: The product must be stored in original unopened and undamaged sealed packaging in dry conditions and temperatures between +5 °C and +30 0C. Protect from direct sunlight, rain, snow and ice, etc. Store in a horizont­al position. Do not stack pallets of the rolls on top of each other, or under pallets of any other materials during transport or storage.

Appearance / Colour: Grey Sand Finish

Effective thickness: HDPE membrane (compos- > 1.2 mm 

TECHNICAL INFORMATION
Resistance to static puncture 900 N (ASTM E154)
Ten::.lle ::.trength 25 MPa (free film) (ASTM D412)
Elongation > 500% (ASTM D412)
Adhesion in peel ;::: 1.8 N/mm (Concrete) (ASTM D903)
Joint peel resistance 1.4 N/mm (HDPE to HDPE Mem­brane at Overlap) @ 23°C::: 0.8 N/mm (Double/Single Side Jointing Tape to HDPE Membrane)@23°( (ASTM D1876)
Water tightness
> 71 m of hydrostatic head
(ASTM D5385)
Resistance to lateral water migration
> 71 m (ASTM D5385)
     
Flexibility at low temperature Unaffected at -23 °C (ASTM D1970)
APPLICATION INFORMATION
Ambient air temperature +5 °C min./ +40 °C max.
Substrate temperature +5 °C min./ +40 °C max.

SYSTEM INFORMATION

System structure                                    

The following system products must be used:

  • SikaProof®-7311.2 mm sheet membrane
  • SikaProof®-936 (Double side) & SikaProof®-937/S (Single Side) sticky tape used for specialized detailing and overlaps.(Refer to individual Product Data Sheets) Ancillary products:
    Accessories and complementary products are available to provide detailing and connection solutions

BASIS OF PRODUCT DATA

 

All technical data stated in this Product Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control.

ECOLOGY, HEALTH AND SAFETY

User must read the most recent corresponding Safety Data Sheets (SOS) before using any products. The SOS provides information and advice on the safe handling storage and disposal of chemical products and con­ tains physical, ecological, toxicological and other safety-related data.

APPLICATION INSTRUCTIONS

EQUIPMENT

  • Measuring tape
  • Membrane Cutter
  • Marking pen
  • Scissors
  • Pressure roller
  • Clean lint-free cloth
  • Metal straight edge for cutting
  • Hot air gun (Leister Triac)
  • Automatic thermal jointing machine (Leister Twinny or Leister Varimat,etc)

APPLICATION METHOD /TOOLS

Surface Preparation

It is essential to create a sound and solid substrate to eliminate movement during the concrete pour. Sub­ strates must be regular and smooth with no gaps or voids. Grout around all penetrations for stability

Horizontal Blinding

The blinding must be free of loose aggregate, voids,

surface irregularities and sharp protrusions. The sur­ face needs to be in a touch dry condition. SSD condi­tion (no standing water) is also acceptable.

Vertical Surfaces

The vertical surfaces should have proper levelled brickwork, blockwork or formwork without any irregu­ larities. For the case of sheet piles, the substrate should be made regular with a smooth finished shotcrete or sacrificial formwork to be installed

Installation

Please refer to the Sika• Method Statement: SikaProof®-7311.2 mm for detailed installation guidelines or contact Sika” Technical Services team for support

Membrane Repair

Generally, the membrane is very tough, and the exe­ cution should not encounter any repair. In the most extreme cases, if for some site issues, there is any reason to do a patch work, then please contact our Sika” Technical Services team for the rectification pro­cedure

Pouring of Concrete

It is recommended that concrete is poured within a maximum of 45 days after the HOPE membrane has been installed on the sub-base (e.g. PCC). Care should be taken to avoid any damage to the membrane dur­ ing laying steel reinforcement, consolidation and com­ paction of concrete.

Care should be taken to avoid any damage to the membrane during the reinforcement laying. Addition­ ally, during placement of concrete, the vibrator needle should not touch the placed IDPt membrane for best results use Sika” Smart Dynamic Concrete

LOCAL RESTRICTIONS

Note that as a result of specific local regulations the declared data and recommended uses for this product may vary from country to country. Consult the local Product Data Sheet for exact product data and uses for the intended application and purpose. Sika reserves the right to change the properties of its products. The proprietary rights of third parties must be observed. All orders are accepted subject to our current terms of sale and delivery. Users must always refer to the most recent issue of the local Product Data Sheet for the product concerned, copies of which will be supplied on request.