大家是如何分辨石板瓦的呢?下面科佰工貿小編來介紹下如何區分石板瓦的優劣:
高硅,低鈣、鐵、鎂、鋁、黑度深、色差小、可劈分性高、外表平整度好,二氧化硅的高低會波及板質的硬度和吸水率,中國、德國、美國的板石標準來說,低硅的板材因其抗壓強度和吸水率的不足不能用來做屋面瓦板,高鈣的板材易褪色、風化,高金屬元素的易于空氣中的硫元素反應導致老化斷裂,詳細請參看國度板石檢驗標準GB 18600,中國國度天然板石唯一的檢驗標準。天然石板瓦也稱頁巖瓦、青石板瓦,是對天然板石做屋頂蓋瓦的通俗名法,規范術語為瓦板。
同樣是(shi)建(jian)筑板(ban)石(shi)類,瓦(wa)(wa)(wa)板(ban)巖(yan)(yan)(yan)(yan)(yan)可(ke)以做(zuo)飾(shi)面板(ban)巖(yan)(yan)(yan)(yan)(yan),而飾(shi)面板(ban)巖(yan)(yan)(yan)(yan)(yan)不(bu)能(neng)(neng)做(zuo)瓦(wa)(wa)(wa)板(ban)巖(yan)(yan)(yan)(yan)(yan),這是(shi)什么理(li)由呢?首先要(yao)知道優質(zhi)的(de)(de)(de)板(ban)石(shi)必須(xu)具備(bei)(bei)的(de)(de)(de)特點(dian):劈(pi)分(fen)性(xing)能(neng)(neng)好(hao)(hao)、平整度(du)(du)(du)好(hao)(hao)、色差小(xiao)、黑度(du)(du)(du)高、彎(wan)(wan)曲(qu)強度(du)(du)(du)高、含(han)鈣鐵(tie)硫量(liang)低(di),燒失量(liang)低(di),耐(nai)酸堿性(xing)能(neng)(neng)好(hao)(hao),吸(xi)水率低(di),耐(nai)候性(xing)好(hao)(hao)。不(bu)具備(bei)(bei)良好(hao)(hao)的(de)(de)(de)劈(pi)分(fen)性(xing)能(neng)(neng),基(ji)本沒(mei)有(you)辦(ban)法把(ba)石(shi)板(ban)瓦(wa)(wa)(wa)劈(pi)分(fen)到5~7mm的(de)(de)(de)標準(zhun)厚度(du)(du)(du);沒(mei)有(you)良好(hao)(hao)的(de)(de)(de)彎(wan)(wan)曲(qu)強度(du)(du)(du),在這一厚度(du)(du)(du)下就無法達(da)到蓋瓦(wa)(wa)(wa)的(de)(de)(de)應(ying)用(yong)要(yao)求(qiu)(qiu);平整度(du)(du)(du)差,基(ji)本不(bu)能(neng)(neng)滿足整齊妥帖的(de)(de)(de)掛瓦(wa)(wa)(wa)施工(gong)要(yao)求(qiu)(qiu);沒(mei)有(you)良好(hao)(hao)的(de)(de)(de)材質(zhi)特點(dian),就不(bu)可(ke)能(neng)(neng)經久不(bu)褪(tun)色、不(bu)風化、不(bu)生銹而保持100年以上的(de)(de)(de)應(ying)用(yong)壽命(ming)。這就是(shi)飾(shi)面板(ban)巖(yan)(yan)(yan)(yan)(yan)不(bu)能(neng)(neng)做(zuo)瓦(wa)(wa)(wa)板(ban)巖(yan)(yan)(yan)(yan)(yan)的(de)(de)(de)理(li)由,同理(li),瓦(wa)(wa)(wa)板(ban)巖(yan)(yan)(yan)(yan)(yan)可(ke)以作飾(shi)面板(ban)巖(yan)(yan)(yan)(yan)(yan)的(de)(de)(de)理(li)由就很容易理(li)解了(le),只要(yao)把(ba)瓦(wa)(wa)(wa)板(ban)巖(yan)(yan)(yan)(yan)(yan)劈(pi)分(fen)的(de)(de)(de)厚一點(dian)就可(ke)以滿足飾(shi)面板(ban)巖(yan)(yan)(yan)(yan)(yan)的(de)(de)(de)所有(you)要(yao)求(qiu)(qiu)了(le)。