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For indoor air quality, CLT has been tested to determine the level " `* {! z5 o: r0 k# U2 \, L Z+ O% sand safety of the off gassing it produces. CLT glue lines were tested for ) w6 G! d# Y4 c5 Hvolatile organic compounds (VOCs), including formaldehyde emissions.: A/ E/ k0 w2 b0 A
The VOCs as measured in a series of tests were found to be roughly one. q9 d# d: d9 A1 ?
parts per billion (ppb), well under the standard of 50 ppb deemed to be S3 P0 k; D% r: R9 B' T: m
a health hazard. & m" Y* N6 s' w3 r+ ~7 R ) [. k. c0 h. d% a& E z9 p. }source:. P4 F+ F% M; V. Z/ I8 @5 P, v( c CROSS-LAMINATED TIMBER IN BRITISH COLUMBIA# r) ~9 u n& W5 _. O4 W http://www.naturallywood.com/sites/default/files/CLT-and-Dowling-Residence.pdf
石工 发表于 2016-6-2 15:29 " }/ \9 w$ L2 Y3 Q3 vFor indoor air quality, CLT has been tested to determine the level ! }3 { f; d! G5 ^and safety of the off gassing i ...
% M: i$ C& r ^9 jCLT肯定是符合标准的,我只是对现行标准不大放心。treated wood在当年也是符合标准的。
9 r% y: e' a! f. L: E4 Z见过一个游泳池的房顶梁用这种材料做然后靠墙的部分全部腐烂了。好像是水蒸汽在棚顶凝结然后流倒最底初聚集,从而腐烂低处。。所以我看,这种材料不像他们所宣称的那样。不过到是看到很多新建的游泳馆都在用这种材料。估计以后会出大问题的,那天塌了死几个人,人们才会禁止使用这种材料在可能集水的地方。
石工 发表于 2016-6-3 05:29 3 J( u- p. v2 U! z( iFor indoor air quality, CLT has been tested to determine the level : o; M* J4 S( B4 m+ jand safety of the off gassing i ...
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60年代这边还很时兴喷聚尿醛泡沫,后来就是因为有formaldehyd释放而弃用了。