APP MEMBRANE & CHEMICAL WATERPROOFING ADMIXTURES

We are importers and suppliers of an excellent quality range of APP Waterproofing Membrane from Egypt. This waterproofing membrane is one of the largest selling membrane used in waterproofing solutions. Manufactured using 160 gsm polyester core coated by Atactic Polypropylene bitumen and Polyethylene film on both sides, this waterproofing membrane is acknowledged widely for its durability, chemical stability and strength. The offered APP Waterproofing Membrane is available in different specifications to meet the varied needs of our esteemed clients.

Features:

• Enhanced physical stability
• High wear strength
• Water and cold resistance
• Resistant to atmospheric corrosion

Uses:

Super Mat plain membranes are ideal for a wide range of waterproofing applications such as:

• Roofs
• Basements
• Terrace Gardens

Super Mat Membranes With Mineral Top Finish

Super Mat also comes with Mineral Top finish. The upper surface is coated with minerals. The bottom surface, like Super Mat, has Polyethylene. The rest of the construction is similar to Super Mat.

Size And Thickness:

Both Super Mat and Super Mat MT come in thickness of 3 mm and 4 mm and in rolls of 1m x 10m.

Features:

• India’s only Seven Layer membrane.
• Total impermeability to water and extremely resistant to Ageing and Weathering.
• Superior flexibility through a uniquely formulated coating.

Application Methodology

• Clean the surface thoroughly and apply Waterbased Primer @ 0.3 liters per square meter.
• Always start at the low point and progress to the high point on the roof.
• The membrane should be installed perpendicular to the slope of the roof.
• Unroll the membrane and ensure proper side laps.
• Now reroll it and while standing on the unrolled portion, torch the exposed polyethylene side of the roller.
• Push the roll forward with your foot and keep moving forward. The molten bitumen and the primer will ensure good adhesion.
• The flame should be moved in shape of “L” applying about 75 percent of the heat to the roll and 25 percent to the substrate including the lap area of previously installed membrane. The flame should be moved from side to side and up the lap edge while membrane is slowly unrolled and adhered to the under lying surface.
• Heat the overlap and use round tipped towel to seal overlap.
• Excess compound should be smoothened and pressed into seam using hot trowel.
• When one end is complete, reroll the opposite end install in exactly the same, manner.
• The end lap should be 100 mm and the side lap must be 75mm.

Chemical Admixtures

Chemical admixtures are the ingredients in concrete other than cement, water, and aggregate that are added to the mix immediately before or during mixing. Contractors use admixtures primarily to reduce the cost of concrete construction; to modify the properties of hardened concrete; to ensure the quality of concrete during mixing, transporting, placing, and curing; and to overcome certain emergencies during concrete operations.

Successful use of admixtures depends on the use of appropriate methods of batching and concreting. Most admixtures are supplied in ready-to-use liquid form and are added to the concrete at the plant or at the jobsite. Certain admixtures, such as pigments, expansive agents, and pumping aids are used only in extremely small amounts and are usually batched by hand from premeasured containers.

The effectiveness of an admixture depends on several factors including: type and amount of cement, water content, mixing time, slump, and temperatures of the concrete and air. Sometimes, effects similar to those achieved through the addition of admixtures can be achieved by altering the concrete mixture-reducing the water-cement ratio, adding additional cement, using a different type of cement, or changing the aggregate and aggregate gradation.

Water-reducing admixtures usually reduce the required water content for a concrete mixture by about 5 to 10 percent. Consequently, concrete containing a water-reducing admixture needs less water to reach a required slump than untreated concrete. The treated concrete can have a lower water-cement ratio. This usually indicates that a higher strength concrete can be produced without increasing the amount of cement. Recent advancements in admixture technology have led to the development of mid-range water reducers. These admixtures reduce water content by at least 8 percent and tend to be more stable over a wider range of temperatures. Mid-range water reducers provide more consistent setting times than standard water reducers.