QUALITY HEMP
ONLY IF IT COMPLIES
Meeting quality standards for construction materials is essential to the safety and durability of structures.
Hemp Building
This is the standard that assures users of consistent hemp-shiv characteristics and the best performance of the hemp-and-lime biocomposite, in accordance with the guidelines issued by the French association “Construire en Chanvre”.
PARAMETERS
• Particle size: it must comply with established values; 95% of the granulate must be below Lmax +/- 10%. More than 80% must be below 10 mm.
• Density: the density of the hemp shiv must remain constant; an annual variation of no more than 15% above or below the reference value is permitted.
• Moisture content: relative moisture must be <19%.
• Dust content: the hemp shiv is dedusted; residual dust content must be below 2% after passing through a 0.25 mm sieve.
• Colour: the colour of the hemp shiv is mainly a consequence of retting. A content of non-compliant particles below 5% is permitted.
• Hemp purity of the material: the material must be 100% hemp. No other materials are permitted, even in small quantities.
Measurement reliability is ensured through careful inspections. To maintain certification, checks are required every 200 tonnes of processed product.
Material that meets the quality standard is identified by the following mark:
Changing the Way We Build
Tecno Canapa is a range of high-performance construction materials for eco-efficient building and meets the fundamental requirement of the new sustainable-development strategy: minimising energy consumption during building-material production, the construction phase and throughout the building’s entire life cycle.
