橡(xiang)(xiang)胶抽拔(ba)管是一种用(yong)于(yu)混(hun)(hun)凝土(tu)构件小直径成(cheng)孔(kong)(kong)(kong)的(de)新型芯默(mo),它(ta)主要(yao)为桥梁上形成(cheng)较小预(yu)应力孔(kong)(kong)(kong)而(er)设计,也(ye)可用(yong)于(yu)其它(ta)建筑行业混(hun)(hun)凝土(tu)的(de)成(cheng)也(ye)。它(ta)是利用(yong)其高强度,高弹性和(he)橡(xiang)(xiang)胶体积不(bu)可压缩性能,在抽拔(ba)管内(nei)不(bu)加任(ren)何骨架材料,在管体轴向(xiang)受力时(shi),即会轴向(xiang)伸(shen)长,径向(xiang)自然弯(wan)细,使(shi)(shi)管体和(he)混(hun)(hun)凝土(tu)也(ye)壁出现(xian)向(xiang)隙(xi)而(er)逐步剥离拉(la)出。抽拔(ba)有力,施工(gong)方便(bian),可反复使(shi)(shi)用(yong),寿命长,表面光滑,平(ping)整度好,预(yu)留(liu)孔(kong)(kong)(kong)孔(kong)(kong)(kong)壁光滑,且抽拔(ba)时(shi)向(xiang)不(bu)受混(hun)(hun)凝土(tu)凝固时(shi)内(nei)的(de)限制,经济效益(yi)是显而(er)易见的(de)。
该产(chan)品(pin)主要用(yong)于各种规格的(de)钢筋(jin)混凝(ning)土构件(jian)成孔(kong)(kong),包(bao)括桩、屋(wu)架、屋(wu)面板、柱、梁、墙板等构件(jian)成孔(kong)(kong)的(de)新型(xing)工(gong)(gong)程(cheng)橡胶(jiao)制品(pin)。橡胶(jiao)抽拔(ba)管(guan)(guan)与(yu)传统使用(yong)的(de)钢质(zhi)波纹(wen)管(guan)(guan)相比(bi),具有无可(ke)(ke)比(bi)拟的(de)优点,即施工(gong)(gong)装卸灵活、结构简(jian)单、造价低(di)廉和能够重复使用(yong)等特点。可(ke)(ke)用(yong)于直径50~90mm的(de)混凝(ning)构件(jian)的(de)成孔(kong)(kong),使用(yong)温度(du)在(zai)-10~80℃的(de)范围(wei),特别适用(yong)于后张紧预(yu)应力(li)桥梁的(de)抽孔(kong)(kong),它可(ke)(ke)使混凝(ning)土构件(jian)施工(gong)(gong)简(jian)便,抽孔(kong)(kong)快(kuai)速,质(zhi)量好(hao)(hao),并能节(jie)约大量三材和劳力(li)。橡胶(jiao)抽拔(ba)管(guan)(guan)与(yu)其他橡胶(jiao)制品(pin)相比(bi),其技(ji)术难点在(zai)于挤(ji)出橡胶(jiao)制品(pin)需(xu)具有良(liang)好(hao)(hao)的(de)弹(dan)性(xing)和伸长(zhang)率,且硫化是在(zai)高温低(di)压下进行,无模具,这就需(xu)要在(zai)配(pei)方(fang)设(she)计和工(gong)(gong)艺(yi)设(she)计上要达到较高水平