鋼纖維如何防止開裂
鋼(gang)(gang)(gang)纖(xian)(xian)(xian)維(wei)(wei)通常與(yu)混(hun)(hun)凝(ning)(ning)土(tu)(tu)(tu)(tu)結合使(shi)(shi)用(yong)(yong)。鋼(gang)(gang)(gang)纖(xian)(xian)(xian)維(wei)(wei)是指以切(qie)(qie)斷細(xi)鋼(gang)(gang)(gang)絲(si)法(fa)、冷(leng)軋帶鋼(gang)(gang)(gang)剪切(qie)(qie)、鋼(gang)(gang)(gang)錠銑削或鋼(gang)(gang)(gang)水快速冷(leng)凝(ning)(ning)法(fa)制成長徑比(纖(xian)(xian)(xian)維(wei)(wei)長度與(yu)其(qi)直徑的(de)比值，當(dang)纖(xian)(xian)(xian)維(wei)(wei)截面(mian)為非(fei)圓形(xing)時(shi)，采用(yong)(yong)換算等效(xiao)截面(mian)圓面(mian)積的(de)直徑)為40～80的(de)纖(xian)(xian)(xian)維(wei)(wei)。鋼(gang)(gang)(gang)纖(xian)(xian)(xian)維(wei)(wei)混(hun)(hun)凝(ning)(ning)土(tu)(tu)(tu)(tu)配(pei)制常溫(wen)下應用(yong)(yong)的(de)鋼(gang)(gang)(gang)纖(xian)(xian)(xian)維(wei)(wei)混(hun)(hun)凝(ning)(ning)土(tu)(tu)(tu)(tu)，可(ke)使(shi)(shi)用(yong)(yong)低碳(tan)鋼(gang)(gang)(gang)纖(xian)(xian)(xian)維(wei)(wei);而配(pei)制耐火的(de)鋼(gang)(gang)(gang)纖(xian)(xian)(xian)維(wei)(wei)混(hun)(hun)凝(ning)(ning)土(tu)(tu)(tu)(tu)，則(ze)必須使(shi)(shi)用(yong)(yong)不(bu)銹鋼(gang)(gang)(gang)纖(xian)(xian)(xian)維(wei)(wei)。砂漿或混(hun)(hun)凝(ning)(ning)土(tu)(tu)(tu)(tu)中摻(chan)加適(shi)量的(de)鋼(gang)(gang)(gang)纖(xian)(xian)(xian)維(wei)(wei)，可(ke)提(ti)高(gao)其(qi)抗(kang)拉、抗(kang)彎強度，并大(da)幅(fu)度地提(ti)高(gao)其(qi)韌性和抗(kang)沖擊(ji)強度。摻(chan)入混(hun)(hun)凝(ning)(ning)土(tu)(tu)(tu)(tu)后，可(ke)大(da)大(da)提(ti)高(gao)混(hun)(hun)凝(ning)(ning)土(tu)(tu)(tu)(tu)的(de)強度，使(shi)(shi)其(qi)具有很強的(de)抗(kang)裂(lie)性。一(yi)(yi)旦混(hun)(hun)凝(ning)(ning)土(tu)(tu)(tu)(tu)表(biao)面(mian)或內部出現裂(lie)縫，鋼(gang)(gang)(gang)纖(xian)(xian)(xian)維(wei)(wei)可(ke)以將此類裂(lie)縫控制在(zai)一(yi)(yi)定范圍內，防止(zhi)裂(lie)縫擴大(da)，提(ti)高(gao)工(gong)程的(de)沖擊(ji)強度。...
