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src="http://www.28fashion.com/data/include/newshits.php?id=435"></script></span> </h3> <div id="jlrjvtnppp" class="share">  <div id="jlrjvtnppp" class="bdsharebuttonbox"> <a href="#" class="bds_more" data-cmd="more"></a> <a href="#" class="bds_qzone" data-cmd="qzone"></a> <a href="#" class="bds_tsina" data-cmd="tsina"></a> <a href="#" class="bds_tqq" data-cmd="tqq"></a> <a href="#" class="bds_renren" data-cmd="renren"></a> <a href="#" class="bds_weixin" data-cmd="weixin"></a> </div> <script> window._bd_share_config={"common":{"bdSnsKey":{},"bdText":"","bdMini":"2","bdPic":"","bdStyle":"0","bdSize":"16"},"share":{},"image":{"viewList":["qzone","tsina","tqq","renren","weixin"],"viewText":"分享到：","viewSize":"16"},"selectShare":{"bdContainerClass":null,"bdSelectMiniList":["qzone","tsina","tqq","renren","weixin"]}};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')).src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)]; </script>  </div> </div> <div id="jlrjvtnppp" class="content"><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 機房的噪聲控制，一般在墻面、頂棚安裝木絲板、礦棉板和泡沫塑料等吸聲材料作降噪處理。其安裝方法有組合式及粘貼法。由于是整片滿鋪，因此，只有一個面能起吸聲作用，其平均吸聲系數(shù)反僅為0.3左右，噪聲降低值為7~10分貝。雖能收到一定的降噪效果，但是，組合式安裝法施工復雜、效率低，消耗木材多;粘貼法施工時對墻面平整度要求高，粘結劑的配合比不易掌握。而采用懸掛式空間吸聲體處理噪聲的方法，其材料耗用量少，施工簡便，經濟實用。由于空間吸聲體是懸空、分散吊掛，具有雙面或多面吸聲作用，同時采用了吸聲系數(shù)較高的超細玻璃棉，使吸聲效率大大提高。一般吸聲體與頂面積之比為35一45%，其噪聲降低值亦可達到7~10分貝。<br/></span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 空間吸聲體有平板形、球形和圓錐形等，其具體做法是:平板形吸聲體是將玻璃纖維布縫成長方形的袋子，每袋裝超細玻璃棉約1.5公斤，然后將袋子釘在木框上，木框四角安裝1號羊眼作為吊掛之用。球形吸聲體是用鐵絲編制而成的網球，在網球內充填超細玻璃棉。以上兩種空間吸聲體可用鉛絲吊掛在頂棚內預埋或增設的吊鉤_L，距頂棚的高度為室內凈高的1/5~1/6，兩吸聲體的水平間距以50厘米為宜。</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"><br/></span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">施工步驟：</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">墻面找平→瀝青防潮→龍骨的安裝→吸音玻璃棉的鋪裝→玻璃絲布的鋪裝→面層鋁板網的安裝→鋁壓條的安裝。</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> </span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 一、墻面找平</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 墻面找平的目的一是方便防潮層及隔音層的施工，二是增強墻壁的隔音效果。墻面找平采用1:3的水泥砂漿，抹灰厚度1.5-2cm。待抹灰墻面完全干燥后掃除墻面易脫落的水泥砂漿殘渣。</span><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">找平后的墻面平整度誤差范圍控制在10mm以內，即最凸出點與最凹進點相差不能超過10mm。</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> </span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">二、瀝青防潮</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 對墻面進行瀝青防潮可以保持墻體干燥并能夠防止冷凝水對吸音材料吸音性能的影響。防潮瀝青一般采用10號或30號石油瀝青加入特定的溶劑制成，在找平層干燥后施工，施工方法可用噴涂或涂刷，要求薄而均勻，不得有空白、麻點或氣泡。瀝青防潮層涂刷后一定要充分晾置干燥。瀝青防潮層的涂刷厚度應控制在2mm以內，施工墻面要100％被瀝青覆蓋，瀝青層干燥程度以不粘手為標準。</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> </span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">三、龍骨的安裝</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 龍骨是用來固定吸音材料的，材質為輕鋼龍骨。輕鋼龍骨由膨脹螺栓固定于墻面，縱向安裝，膨脹螺栓的間隔不小于80 cm，輕鋼龍骨的安裝間距不低于60cm。安裝完成后的輕鋼龍骨承重強度不小于100kg。輕鋼龍骨安裝后的平整度誤差控制在5mm范圍內，即最高處與最低處相差不能超過5mm。</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> </span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">四、吸音玻璃棉的鋪裝</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 輕鋼龍骨安裝完畢后，將吸音玻璃棉切割成與輕鋼龍骨安裝間距相同寬度的板塊，鑲嵌于輕鋼龍骨之間，兩個吸音玻璃棉板塊之間的接縫要拼實擠嚴。</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> </span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">五、玻璃絲布的鋪裝</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 玻璃絲布的主要作用是防止吸音玻璃棉纖維外漏，輔助作用是平整、固定吸音玻璃棉。采用的玻璃絲布目數(shù)不應低于12目。施工時，將玻璃絲布在吸音玻璃棉表面抻平繃緊，使玻璃絲纖維束呈正經緯狀。玻璃絲布表面不出現(xiàn)褶皺現(xiàn)象，平整度誤差5mm。</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> </span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">六、面層鋁板網的安裝</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 面層鋁板網采用魚鱗花型沖孔鋁板網，網孔密度為5×10，鋁板厚度為0.7mm。面層鋁板網的主要作用是固定吸音玻璃棉及玻璃絲布，輔助作用是裝飾吸音墻面。鋁板網平鋪于吸音玻璃棉及玻璃絲布的表面，接縫處由鋁壓條覆蓋。鋁板網安裝時魚鱗花朝外，開孔向下以防止灰塵落入吸音材料。鋁板網的平整度誤差控制在5mm。</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> </span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;">七、鋁壓條的安裝</span></p><p><span style="font-family: 微軟雅黑, 'Microsoft YaHei'; font-size: 14px;"> 鋁壓條采用規(guī)格為38mm寬，內側帶兩道加強筋，表面為仿紅銅色鈦合金涂層。其主要作用是配合輕鋼龍骨對整個吸音墻面起到固定作用，輔助作用是對墻面起到一定的裝飾作用。鋁壓條的采用縱橫狀安裝，縱向間距為600mm，橫向間距為1200mm，用拉鉚釘固定于輕鋼龍骨上，拉鉚釘?shù)拿芏炔坏陀?個/m2。鋁壓條安裝水平誤差不超過3mm，縱向誤差不超過3mm，平整度誤差不超過5mm。</span></p><p><br/></p><p><br/></p></div> <h3 class="tag">相關標簽：<a href="http://www.28fashion.com/tag/%E9%87%8D%E5%BA%86%E7%8E%AF%E5%A2%83%E8%AF%84%E4%BC%B0">重慶環(huán)境評估</a> </h3> <div id="jlrjvtnppp" class="page">上一篇：<a href="http://www.28fashion.com/news/425.html">廢水化驗員采樣時有哪些安全事項？</a><br />下一篇：<span><a href="http://www.28fashion.com/news/436.html">治理工業(yè)廢氣污染的重要性</a></span></div> </div> <div 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