1初凝(ning)快(kuai)有利微孔形成

采用(yong)(yong)空壓制泡技術引(yin)入(ru)(ru)微孔,對輕質墻板性能(neng)的(de)(de)改善具有(you)極為重要的(de)(de)作(zuo)用(yong)(yong)。普通硅酸(suan)鹽水(shui)泥初凝(ning)時間(jian)(jian)(jian)長,引(yin)入(ru)(ru)的(de)(de)氣泡在(zai)(zai)水(shui)泥漿(jiang)初凝(ning)前(qian)就已經大量逸出(chu)損失,料漿(jiang)泌水(shui)嚴重,無法形成(cheng)理想的(de)(de)微孔結(jie)構。鐵鋁酸(suan)鹽水(shui)泥初凝(ning)快,引(yin)入(ru)(ru)的(de)(de)氣泡易于被(bei)迅速穩(wen)(wen)定在(zai)(zai)基體(ti)中。此外,引(yin)氣劑對水(shui)泥均有(you)緩凝(ning)作(zuo)用(yong)(yong),初凝(ning)時間(jian)(jian)(jian)越短(duan),越有(you)利于穩(wen)(wen)泡,相互作(zuo)用(yong)(yong)的(de)(de)結(jie)果是(shi)既達到了穩(wen)(wen)泡目的(de)(de),又延長了鐵鋁酸(suan)鹽水(shui)泥實際初凝(ning)時間(jian)(jian)(jian),有(you)利于澆注過程的(de)(de)完成(cheng)。

2快(kuai)硬(ying)縮(suo)短(duan)生產周期

鐵(tie)鋁(lv)酸(suan)鹽(yan)水(shui)泥終凝時(shi)間(jian)為30min,在干熱養(yang)護條件(jian)下,制(zhi)品6h即(ji)可脫模進入堆場,3d強度可達(da)85%,7d即(ji)可出廠。而普通硅酸(suan)鹽(yan)水(shui)泥配制(zhi)的輕質墻板必須在28d以后才能出廠。

3保證(zheng)了制品的(de)輕質高強(qiang)

表(biao)觀密(mi)度740kg/m3的制品,抗(kang)壓強(qiang)度可達到4.0~6.0MPa。板材垂(chui)直豎立,支距2.6 m做抗(kang)沖(chong)擊(ji)檢測(ce)時,墻板水平(ping)振(zhen)幅達50 mm,板面不(bu)出現任何(he)裂紋,制品柔韌性好(hao)。

4微(wei)膨脹(zhang),輕質墻板不易干(gan)燥(zao)開裂

普(pu)通硅酸鹽(yan)水泥(ni)輕(qing)質制品干(gan)縮(suo)值經測試為1.5 mm/m,而(er)鐵(tie)鋁(lv)(lv)酸鹽(yan)水泥(ni)輕(qing)質制品干(gan)縮(suo)值僅(jin)為0.4 mm/m。鐵(tie)鋁(lv)(lv)酸鹽(yan)水泥(ni)的(de)微膨脹性(xing),可以(yi)緩解輕(qing)質墻板因干(gan)燥(zao)收(shou)縮(suo)引起的(de)開裂。 

5堿(jian)度低,提高輕(qing)質墻(qiang)板耐久性(xing)

鐵鋁(lv)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)與(yu)抗(kang)堿(jian)(jian)玻(bo)纖(xian)(xian)(xian)(xian)匹(pi)(pi)(pi)(pi)(pi)配(pei)的(de)耐(nai)久(jiu)性(xing)(xing)好,與(yu)中(zhong)(zhong)堿(jian)(jian)玻(bo)纖(xian)(xian)(xian)(xian)匹(pi)(pi)(pi)(pi)(pi)配(pei)次之。但二者均遠遠高于硅(gui)(gui)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)與(yu)抗(kang)堿(jian)(jian)玻(bo)纖(xian)(xian)(xian)(xian)匹(pi)(pi)(pi)(pi)(pi)配(pei)的(de)耐(nai)久(jiu)性(xing)(xing)。以(yi)玻(bo)纖(xian)(xian)(xian)(xian)強(qiang)度的(de)保留率50%計算,中(zhong)(zhong)堿(jian)(jian)玻(bo)纖(xian)(xian)(xian)(xian)在普(pu)通硅(gui)(gui)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)漿(jiang)液中(zhong)(zhong)為2.5~7.0 d;鐵鋁(lv)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)的(de)堿(jian)(jian)度因比普(pu)通硅(gui)(gui)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)低(di)(di),中(zhong)(zhong)堿(jian)(jian)玻(bo)纖(xian)(xian)(xian)(xian)在鐵鋁(lv)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)漿(jiang)液中(zhong)(zhong)則為56~300 d。由此見,鐵鋁(lv)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)與(yu)中(zhong)(zhong)堿(jian)(jian)玻(bo)纖(xian)(xian)(xian)(xian)匹(pi)(pi)(pi)(pi)(pi)配(pei)的(de)耐(nai)久(jiu)性(xing)(xing)比普(pu)通硅(gui)(gui)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)與(yu)中(zhong)(zhong)堿(jian)(jian)玻(bo)纖(xian)(xian)(xian)(xian)匹(pi)(pi)(pi)(pi)(pi)配(pei)的(de)耐(nai)久(jiu)性(xing)(xing)要高20~40倍。根(gen)據(ju)甘肅(su)省建材產品質檢站按照JC 666-1997要求測試,用該鐵鋁(lv)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)與(yu)中(zhong)(zhong)堿(jian)(jian)玻(bo)纖(xian)(xian)(xian)(xian)匹(pi)(pi)(pi)(pi)(pi)配(pei)生產的(de)輕質墻板(ban)耐(nai)久(jiu)性(xing)(xing)完全可滿足要求。而低(di)(di)堿(jian)(jian)度硫鋁(lv)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)必須與(yu)抗(kang)堿(jian)(jian)玻(bo)纖(xian)(xian)(xian)(xian)匹(pi)(pi)(pi)(pi)(pi)配(pei)才(cai)能滿足耐(nai)久(jiu)性(xing)(xing)要求;普(pu)通硅(gui)(gui)酸(suan)(suan)(suan)鹽(yan)(yan)水(shui)(shui)泥(ni)(ni)與(yu)任何玻(bo)纖(xian)(xian)(xian)(xian)匹(pi)(pi)(pi)(pi)(pi)配(pei)都不(bu)能滿足耐(nai)久(jiu)性(xing)(xing)要求。

結論(lun)

(1)鐵鋁酸鹽水泥作為(wei)膠結材料,對(dui)輕(qing)質(zhi)墻板微孔的實現、縮(suo)短生(sheng)產周期、輕(qing)質(zhi)高(gao)強(qiang)(qiang)、提高(gao)抗干(gan)縮(suo)開裂、增強(qiang)(qiang)板材耐久性等提供(gong)了保證。是微孔輕(qing)質(zhi)墻板理(li)想(xiang)的膠凝(ning)材料。

(2)空壓制泡、穩泡加氣工藝,成泡率高、氣泡細小、均勻(yun)、穩定,使板材的保溫、隔(ge)熱等(deng)性能得到改善。