Newton Newtonite 801 Sealing Mastic for Sealing Penetration & Preventing Bridging

A high grade, hydrophilic waterbar with high elasticity and high tensile strength, made from a polymer which swells when in contact with moisture, ideal for sealing structures against water leaks to both cast-in-place concrete and precast construction joints.

The swelling is achieved through hydrophilic acrylate polymers, which are inseparably embedded within the butylene carrier material. This results in high elasticity and exceptional tensile strength, even when fully expanded within the joint.

Due to its high resistance to acids, alkalis and organic solutions, HydroTank 315 Waterbar can be used to seal joints where aggressive water is expected such as within sewage treatment plants, biogas plants and liquid waste holding tanks.

HydroTank 315 Waterbar swells up to 9 times its original size when in contact with water, sealing the joint fully and reliably. The product is particularly suited to sealing non-compressed joints such as at the junction between slab and wall.

Polymer-modified, and fibre-reinforced, HydroCoat 203-RM is physically and chemically compatible with the host concrete, quickly exhibiting high adhesive and compressive strength. As a single component, requiring only the addition of water, the resulting mortar is rapid curing with enhanced polymeric properties and reliable strength development which is not significantly affected by low-temperature use.

The mortar can be used as supplied up to 100 mm deep, or it can be bulked out with sharp sand to form a high-performance screed or for floor or deck repairs up to maximum depth of 300 mm.

Surface preparation is required, as is protection after application - consult the manufacturer for details.

Features and benefits:

• Incorporates the latest proven cement chemistry, fibre and styrene acrylic copolymer technology.
• Reliable strength development, even at sub-zero temperatures, gives rapid return to service.
• Pre-packaged material only requires mixing with clean water. Can be bulked out with sand or aggregate.
• High bond strength exceeds tensile strength of concrete, thus ensuring monolithic performance of the repair.
• Sets in 10 minutes at 20°C yielding a durable, high strength mortar.
• Dense matrix resists 10 bar water pressure. Very high diffusion resistance to acid gases and chloride ions.
• Sulphate resistance to class DS-5/5m of BRE Special Digest 1 and ideally suited for sewage and wastewater applications.
• Portland cement base with physical properties of cured material similar to base concrete.
• Non-toxic when cured and is listed as authorised under Regulation 31 for use in the supply of drinking water.

HydroCoat 104 is applied to the surface of concrete to provide in-depth protection against the movement of moisture through the capillaries and hairline cracks within the concrete. It consists of Portland cement, specially treated quartz sand and a compound of active chemicals. HydroCoat 104 is supplied in powdered form and is either sprinkled onto fresh concrete or is mixed with water as a carrier and brush or spray applied as slurry for application to fully cured or older concrete or vertical surfaces.

The active chemicals combine with the free lime and moisture present within the capillaries to form insoluble crystalline complexes which effectively block the capillaries and any minor shrinkage cracks to prevent any further movement of moisture to provide a totally dry surface to the concrete.

Large areas can be quickly treated with HydroCoat 104. The speed of application and the low material application rate (1 kg/m²) makes this product a very low-cost option for various scenarios.

Because HydroCoat 104 penetrates deep into the concrete, it does not leave a physical membrane to the surface of the concrete element and so is completely unaffected by loadings imposed by further elements of the build. New concrete elements are placed ‘concrete to concrete’ with no potential for slip or separation as is the case with physical membranes.

Features and benefits:

• Single component.
• Ease of application − sprinkled onto new concrete and applied as a simple slurry to vertical and cured concrete. Permeates deep into the concrete to form a barrier against moisture that cannot be damaged or punctured.
• Loading capabilities only limited by the strength of the concrete.
• No physical membrane − subsequent concrete placement is ‘concrete to concrete’.