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Wood wool lightweight board (surface structure) Mineral bonded wood wool boards (WW boards) are building boards made of wood wool fibres, water and the binding agents cement, caustic magnesia and gypsum. Mineral bound wood wool boards are used in a wide range of applications, e.g., thermal insulation, acoustic insulation, indoor decoration, etc.
Another factor is the impact of expansion and contraction on waterproofing systems for decks. Decks constantly move with changes in temperatures, putting stress on the waterproofing systems. One of the leading causes of waterproof deck system failures is the movement of underlying substrates (plywood) that cause too much stress on the membranes ...
The concrete paving bricks are a porous form of brick formed by mixing small stone hardcore, dyes, cement and sand and other materials in various amounts. Many block paving manufacturing methods are now allowing the use of recycled materials in the construction of the paving bricks, such as crushed glass and crushed old building rubble.
Acetylation takes wood well beyond these levels with corresponding benefits. These include an extended coatings life due to acetylated wood acting as a more stable substrate for paints and translucent coatings. acetylated wood is non-toxic and does not have the environmental issues associated with traditional preservation techniques.
Permeable paving systems, especially those with porous surfaces, require maintenance in order to keep the pores clear of fine aggregates as to not hinder the systems ability to infiltrate stormwater. The frequency of cleaning is again dependent on many site specific factors, such as runoff volume, neighboring sites and climate.
By gluing layers of wood at right angles, the panel is able to achieve better structural rigidity in both directions. It is similar to plywood but with distinctively thicker laminations (or lamellae). CLT is distinct from glued laminated timber (known as glulam), which is a product with all laminations orientated in the same way. [4]
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