樓承(cheng)板(ban)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)首(shou)要起到防腐的(de)(de)效(xiao)果(guo)，按標(biao)準組(zu)(zu)合(he)樓板(ban)與非組(zu)(zu)合(he)樓板(ban)壓型鋼板(ban)應選(xuan)用(yong)(yong)熱(re)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)，不(bu)該(gai)選(xuan)用(yong)(yong)電鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)鋼板(ban)，其雙(shuang)面(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)層總含(han)量(liang)(liang)(liang)要滿足在使用(yong)(yong)期(qi)間不(bu)致(zhi)銹損(sun)的(de)(de)要求(qiu)。當作為(wei)(wei)非組(zu)(zu)合(he)樓承(cheng)板(ban)時(shi)，鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)層含(han)量(liang)(liang)(liang)可選(xuan)用(yong)(yong)較(jiao)低(di)值;當為(wei)(wei)組(zu)(zu)合(he)樓承(cheng)板(ban)時(shi)，鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)層含(han)量(liang)(liang)(liang)不(bu)該(gai)小于150g/m2。當為(wei)(wei)組(zu)(zu)合(he)樓板(ban)且使用(yong)(yong)環境條(tiao)件較(jiao)為(wei)(wei)惡劣時(shi)，鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)層含(han)量(liang)(liang)(liang)應選(xuan)用(yong)(yong)上(shang)限(xian)值或(huo)更高(gao)值。更高(gao)的(de)(de)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)要求(qiu)，如雙(shuang)面(mian)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)(liang)為(wei)(wei)300g/m2、350g/m2或(huo)鍍(du)(du)(du)(du)鋁鋅(xin)(xin)(xin)(5%鋁)275g/m2、300g/m2等，較(jiao)高(gao)的(de)(de)鍍(du)(du)(du)(du)層量(liang)(liang)(liang)使組(zu)(zu)合(he)樓板(ban)有更長耐久性，同等量(liang)(liang)(liang)的(de)(de)鍍(du)(du)(du)(du)鋁鋅(xin)(xin)(xin)的(de)(de)防銹蝕才能大約兩倍于一(yi)般熱(re)鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)。鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)(liang)也不(bu)是越厚越好(hao)，當鍍(du)(du)(du)(du)鋅(xin)(xin)(xin)量(liang)(liang)(liang)較(jiao)厚時(shi)，抗剪連接件栓釘(ding)的(de)(de)焊接質量(liang)(liang)(liang)就很難保證(zheng)，焊接時(shi)，宜選(xuan)用(yong)(yong)局部除(chu)鋅(xin)(xin)(xin)處理措施。

鍍(du)(du)鋅(xin)(xin)鋼板的(de)(de)(de)表面鍍(du)(du)鋅(xin)(xin)主要采(cai)用(yong)的(de)(de)(de)方法(fa)(fa)是(shi)(shi)熱(re)(re)鍍(du)(du)鋅(xin)(xin)。熱(re)(re)鍍(du)(du)鋅(xin)(xin)是(shi)(shi)由(you)較古老的(de)(de)(de)熱(re)(re)鍍(du)(du)方法(fa)(fa)發(fa)展而來(lai)的(de)(de)(de)，自從1836年法(fa)(fa)國把熱(re)(re)鍍(du)(du)鋅(xin)(xin)應用(yong)于工業(ye)以來(lai)，已(yi)(yi)經有一百(bai)七(qi)十年的(de)(de)(de)歷(li)史了。然而，熱(re)(re)鍍(du)(du)鋅(xin)(xin)工業(ye)是(shi)(shi)近三十年來(lai)伴隨冷軋帶鋼的(de)(de)(de)飛速發(fa)展而得到了大規模發(fa)展。鍍(du)(du)鋅(xin)(xin)溶(rong)液(ye)(ye)(ye)有氰(qing)(qing)(qing)(qing)(qing)化(hua)物鍍(du)(du)液(ye)(ye)(ye)和(he)無氰(qing)(qing)(qing)(qing)(qing)鍍(du)(du)液(ye)(ye)(ye)兩類。氰(qing)(qing)(qing)(qing)(qing)化(hua)物鍍(du)(du)液(ye)(ye)(ye)中(zhong)分微氰(qing)(qing)(qing)(qing)(qing)、低(di)氰(qing)(qing)(qing)(qing)(qing)、中(zhong)氰(qing)(qing)(qing)(qing)(qing)、和(he)高氰(qing)(qing)(qing)(qing)(qing)幾(ji)類。無氰(qing)(qing)(qing)(qing)(qing)鍍(du)(du)液(ye)(ye)(ye)有堿(jian)性(xing)鋅(xin)(xin)酸鹽鍍(du)(du)液(ye)(ye)(ye)、銨鹽鍍(du)(du)液(ye)(ye)(ye)、硫酸鹽鍍(du)(du)液(ye)(ye)(ye)及無氨氯(lv)化(hua)物鍍(du)(du)液(ye)(ye)(ye)等。氰(qing)(qing)(qing)(qing)(qing)化(hua)鍍(du)(du)鋅(xin)(xin)溶(rong)液(ye)(ye)(ye)均鍍(du)(du)能(neng)力(li)好，得到的(de)(de)(de)鍍(du)(du)層光滑細致，在生產中(zhong)被長期采(cai)用(yong)。但(dan)由(you)于氰(qing)(qing)(qing)(qing)(qing)化(hua)物劇毒，對環境污染嚴重，近年來(lai)已(yi)(yi)趨向于采(cai)用(yong)低(di)氰(qing)(qing)(qing)(qing)(qing)、微氰(qing)(qing)(qing)(qing)(qing)、無氰(qing)(qing)(qing)(qing)(qing)鍍(du)(du)鋅(xin)(xin)溶(rong)液(ye)(ye)(ye)。

樓(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)適應主(zhu)體(ti)鋼(gang)(gang)(gang)結構快速施(shi)工(gong)的(de)(de)要求，能(neng)(neng)夠在(zai)(zai)短時(shi)間(jian)內提供堅定的(de)(de)作(zuo)業(ye)平(ping)臺(tai)，并可(ke)采(cai)用多個樓(lou)層(ceng)鋪(pu)設壓(ya)型(xing)(xing)鋼(gang)(gang)(gang)板(ban)(ban)(ban)(ban)，分(fen)層(ceng)澆筑混(hun)凝(ning)土(tu)板(ban)(ban)(ban)(ban)的(de)(de)流(liu)水施(shi)工(gong)。在(zai)(zai)使用階段樓(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)作(zuo)為(wei)混(hun)凝(ning)土(tu)樓(lou)板(ban)(ban)(ban)(ban)的(de)(de)受(shou)拉(la)鋼(gang)(gang)(gang)筋(jin)(jin)，也提高(gao)(gao)了(le)樓(lou)板(ban)(ban)(ban)(ban)的(de)(de)剛(gang)度(du)(du)，節省了(le)鋼(gang)(gang)(gang)筋(jin)(jin)和(he)混(hun)凝(ning)土(tu)的(de)(de)用量。樓(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)上面(mian)可(ke)以鋪(pu)設保(bao)溫，隔(ge)(ge)音，隔(ge)(ge)熱，隔(ge)(ge)振等材料(liao)。樓(lou)面(mian)性能(neng)(neng)充分(fen)發揮鋼(gang)(gang)(gang)的(de)(de)良好的(de)(de)抗拉(la)強度(du)(du)和(he)延(yan)性及混(hun)凝(ning)土(tu)優良的(de)(de)抗壓(ya)強度(du)(du)和(he)較大的(de)(de)剛(gang)度(du)(du)。壓(ya)型(xing)(xing)板(ban)(ban)(ban)(ban)表面(mian)壓(ya)紋(wen)使樓(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)與混(hun)凝(ning)土(tu)之間(jian)產生大的(de)(de)結合力(li)，使二者形成(cheng)整體(ti)，配以加勁肋，使樓(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)系統(tong)具有高(gao)(gao)強承(cheng)(cheng)載(zai)力(li)。在(zai)(zai)懸臂(bei)條件(jian)下，樓(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)僅(jin)作(zuo)為(wei)性模板(ban)(ban)(ban)(ban)。懸挑的(de)(de)長度(du)(du)可(ke)根據樓(lou)承(cheng)(cheng)板(ban)(ban)(ban)(ban)的(de)(de)截面(mian)特性來定。為(wei)了(le)防(fang)止懸挑板(ban)(ban)(ban)(ban)的(de)(de)開裂，需在(zai)(zai)支座處依結構工(gong)程師(shi)的(de)(de)設計(ji)配上負筋(jin)(jin)。

江北冷軋卷近期鋼價延續低迷，隨著通國規模的酷暑和旱季到來，熱鍍鋅卷板價格商場逐漸進入需要旺季，海內鋼鐵商場或將窄幅調整。在決策層兩手抓制度措施落實狀況、貨銀本位度定向寬松力度加大的直觀層面利好牽動下，商場信念逐漸趨穩，短期海內鋼價無望止跌企穩;另一上面，以后鋼價殺跌電能有余，而上漲也仍然屏障重重。冷軋卷批發熱鍍鋅卷板(ban)價格價錢或將長期(qi)在于低位運行場面。