晨枫 发表于 2016-5-20 21:05 9 A7 e9 g! N( b' `) z3 r! B) O这是防白蚁危害的。也真是因为这些化学处理,我对CLT的长期安全性有怀疑,缓慢释放出来对人体不好。 ...
& x& R+ p( [# O sFor indoor air quality, CLT has been tested to determine the level 5 k9 X! C7 p6 t" k J9 Wand safety of the off gassing it produces. CLT glue lines were tested for 3 s( ^6 O; b# h3 Fvolatile organic compounds (VOCs), including formaldehyde emissions.8 b" M: t5 n8 Z O4 [5 H
The VOCs as measured in a series of tests were found to be roughly one3 S6 \% h/ K, Z
parts per billion (ppb), well under the standard of 50 ppb deemed to be $ S$ w$ g' V. ~6 m/ v" I) U$ r! Za health hazard.; n2 H1 Q; I2 G3 u
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source: , K0 \' i$ z; ]9 D0 V! G# rCROSS-LAMINATED TIMBER IN BRITISH COLUMBIA ; n3 I! Q5 X+ `" w6 R1 ehttp://www.naturallywood.com/sites/default/files/CLT-and-Dowling-Residence.pdf
石工 发表于 2016-6-2 15:29 " }! Q0 M; X/ Q6 _8 hFor indoor air quality, CLT has been tested to determine the level * r9 [) u* k- {) K! f' U5 J, X/ Wand safety of the off gassing i ...
- t. y0 W2 `3 t0 U, ?& ^CLT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。
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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! d9 y+ x5 z- y/ ^0 v9 ?
For indoor air quality, CLT has been tested to determine the level - G9 ]! E2 S) K, [ y5 |and safety of the off gassing i ...
# b& @! C0 `6 f. _2 u1 E/ p; {$ w 5 Z" Z* P) l n+ ~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。