Claymaster
BEWI Claymaster (Clay Heave Protection) is a product designed to protect against clay heave.
Shrinkable clays are soils containing a large proportion of mineral particles of less than 0.002mm in diameter.
This produces an extremely cohesive soil type when wet, but shrinks to a crumbly, crazed structure when dry. The expansion and contraction process during wet and dry periods is known as ‘clay heave’. This can cause severe problems with foundations.
Claymaster works by surrounding the pile cap with a layer of low density, compressible, expanded polystyrene, reducing pressure on the ground beams as the surrounding clay expands and contracts.
Specification Details
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that BEWI is consulted before specifying.
Certifications & Ratings
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| BBA Certificate Number (?) | 90/2543 | |
| BRE Rating (?) | A+ | |
| Certifications (?) | BBA | |
Technical
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| Features (?) | A permanent solution to clay heave problems , Durable , Easy to install , Lightweight , Negligible compression during concrete casting , No need for specialist trades or equipment , Resistant to moisture | |
Size & Weight
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| Length (?) | 2400 mm | |
| Thickness (?) | 50 - 200 mm | |
| Width (?) | 1200 mm | |
Other
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| Uniclass (?) | Pr_20_85 Support and restraint products | |
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