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Anti-noise barrier for roads comprises wall made up of layer which reflects sound and second, sound-absorbing layer, which faces road, made from wood cement
Anti-noise barrier for roads comprises wall made up of layer which reflects sound and second, sound-absorbing layer, which faces road, made from wood cement
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机译：道路防噪屏障包括由反射声音的层组成的墙和由木水泥制成的第二层吸音层，其面向道路
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摘要
The anti-noise barrier for roads comprises a wall made up of a layer (30) which reflects sound and a second, sound-absorbing layer (32), which faces the road, made from wood cement (cement mixed with sawdust rather than sand). This surface has indentations (10, 33).
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