自(zi)應力(li)(li)(li)鋼筋混(hun)凝土壓力(li)(li)(li)管(guan)(guan)(RCCP管(guan)(guan))有(you)平口式管(guan)(guan)和(he)承插(cha)式管(guan)(guan)兩(liang)種(zhong),已成功地(di)用(yong)于(yu)(yu)輸(shu)送水(shui)、煤氣(qi)和(he)熱(re)電廠粉煤灰(hui)等。它與鑄(zhu)鐵(tie)管(guan)(guan)相比有(you)下(xia)列優點:剛(gang)性(xing)好,據介紹,這種(zhong)管(guan)(guan)道在(zai)地(di)下(xia)可(ke)使(shi)用(yong)80年以(yi)上;不(bu)(bu)導電,能避免雜散電流對管(guan)(guan)線(xian)的腐(fu)蝕(shi);熱(re)導率低(di),外(wai)界(jie)溫(wen)度(du)變(bian)化對管(guan)(guan)內(nei)影響小;長期輸(shu)水(shui)內(nei)表面不(bu)(bu)長銹(xiu)瘤,通(tong)水(shui)能力(li)(li)(li)不(bu)(bu)變(bian);有(you)裂(lie)(lie)縫閉(bi)合(he)和(he)愈合(he)能力(li)(li)(li),若(ruo)出現寬度(du)小于(yu)(yu)0.25mm裂(lie)(lie)紋,在(zai)自(zi)壓應力(li)(li)(li)作用(yong)下(xia)能閉(bi)合(he),通(tong)常仍可(ke)作壓力(li)(li)(li)為0.6MPa以(yi)內(nei)的輸(shu)水(shui)管(guan)(guan)使(shi)用(yong);鋪(pu)設簡(jian)便;接頭密封性(xing)好,使(shi)用(yong)可(ke)靠;價格便宜。缺點是(shi):自(zi)重(zhong)大;性(xing)脆(cui)、易斷;當輸(shu)送含(han)有(you)面體顆粒的介質時,耐磨性(xing)不(bu)(bu)及鑄(zhu)鐵(tie)管(guan)(guan)。RCCP管(guan)(guan)的參考(kao)標(biao)準(zhun)有(you)AWWA C302、AWWA C303等。