Description
Sika BentoShield MAX LM is a polymer modified bentonite waterproofing system. Mechanically bonded, contaminate resistant, self healing membrane for basement and below ground structures.
Sika BentoShield MAX LM is a self healing waterproofing membrane that’s resistant to contaminated soils, forming an automatic mechanical bond to freshly poured concrete it virtually eliminates the possibility of water movement between the membrane & structure. Approximately 6.5 mm thick, consisting of two polypropylene geotextiles, a woven fabric and non-woven fabric, enclosing prehydrated homogeneous layer of granular sodium bentonite at a minimum weight of 5000g/m². The two geotextiles are interlocked by a needle-punching process forcing fibres from the non-woven layer through and beyond the woven layer. This process contains and confines the polymer modified bentonite granules and forms a physical link between the geotextiles. A flexible polyethylene layer is integrally bonded to the non-woven geotextile.
Uses
- Damp proofing, water proofing, tanking membrane for horizontally and vertical applications where buildings are expected to be subject to hydrostatic water pressure.
- Below ground reinforced concrete structures
- Effective against diaphragm wall constructions.
- Direct application onto ground retaining concrete piling when placed within the piling – concrete interface
- Direct application within steel sheet piling – concrete interface
- Can be placed within the formwork.
- Below structural reinforced concrete slabs.
Features & Benefits
- Qualified waterproofing tanking membrane in accordance with BS8102: 2009
- Water tightness of the laps tested to BS EN 1928.
- Designed to offer protection in areas subject to changing geological conditions such as flood plains, areas of soil settlement and brown field constructions.
- Application ensures performance stability in high water table environments and constructions which are subject to future alterations in water levels.
- An effective barrier against ground water in saline environments.
- Easy to install, no primers required.
- Easy to install, no protection boards required.
- Can be applied in temperatures below 0°C
- Will self heal when subjected to a head of water1.
- Can be applied during conditions of high humidity.
- Major constructions benefit from speed of application.
Limitations
- Sika BentoShield MAX LM should only be applied after the successful preparation of the substrate is completed.
- The membrane is designed to work under confinement.
- When placing Sika BentoShield MAX LM inside the formwork, the formwork must be removable & not the stay in-situ variety.
- Sika BentoShield MAX LM products are not designed to be installed over ice or in standing water. Should the ground water contain strong acids, alkalies, or has a conductivity of 2,500 μmhos/cm or greater, water samples should be tested for compatibility.
- Rolls may compress slightly during storage. Membrane can be shaken once unrolled to return to their full length.
