自(zi)應力鋼筋(jin)混凝土壓(ya)力管(guan)(guan)(RCCP管(guan)(guan))有平口式管(guan)(guan)和(he)(he)承插式管(guan)(guan)兩種,已成(cheng)功地用(yong)于(yu)輸(shu)(shu)送(song)水、煤氣和(he)(he)熱(re)電(dian)廠粉煤灰等(deng)(deng)。它與鑄鐵(tie)(tie)管(guan)(guan)相比(bi)有下列優點(dian):剛性(xing)好,據介(jie)紹,這種管(guan)(guan)道在(zai)地下可使用(yong)80年以上;不導電(dian),能避免雜(za)散(san)電(dian)流對(dui)管(guan)(guan)線的(de)(de)腐蝕;熱(re)導率(lv)低,外界溫度(du)變(bian)化對(dui)管(guan)(guan)內(nei)影(ying)響小;長期輸(shu)(shu)水內(nei)表(biao)面(mian)不長銹瘤,通(tong)水能力不變(bian);有裂(lie)縫閉(bi)合(he)和(he)(he)愈合(he)能力,若出現寬(kuan)度(du)小于(yu)0.25mm裂(lie)紋,在(zai)自(zi)壓(ya)應力作用(yong)下能閉(bi)合(he),通(tong)常仍可作壓(ya)力為0.6MPa以內(nei)的(de)(de)輸(shu)(shu)水管(guan)(guan)使用(yong);鋪設簡便;接頭密封性(xing)好,使用(yong)可靠;價格便宜。缺點(dian)是(shi):自(zi)重大(da);性(xing)脆、易斷(duan);當(dang)輸(shu)(shu)送(song)含有面(mian)體顆粒的(de)(de)介(jie)質時(shi),耐磨性(xing)不及(ji)鑄鐵(tie)(tie)管(guan)(guan)。RCCP管(guan)(guan)的(de)(de)參考標準(zhun)有AWWA C302、AWWA C303等(deng)(deng)。