水泥砂浆衬里的腐蚀——即从水泥基质中浸出石灰——会增加pH值、钙和碱度，从而影响水质。在两个公用设施现场进行的现场试验评估了水流、衬砌方法、密封涂层、水质和水泥砂浆成分的影响。在新铺设的管段中停滞相对较长时间（一周）的水显示出显著的水质影响——例如，pH值增加至12。在这两个试验中，沥青密封层显著减少了水泥砂浆的腐蚀。在一个地点，当砂浆中含有II型水泥、减水剂、火山灰材料或高比例的沙子时，腐蚀加剧。在其他地点，这些参数均未对结果产生显著影响。 减少停滞的设计和操作措施可以减少腐蚀影响。包括18个参考文献、表格、图表。

Corrosion of cement-mortar lining--i.e., the leaching of lime from the cement matrix--can impair water quality by increasing pH, calcium, and alkalinity. Field tests at two utility sites evaluated the effects of water flow, lining method, seal coating, water quality, and cement-mortar composition. Water that remained stagnant in newly lined pipe sections for a relatively long time (one week) exhibited significant water quality effects--e.g., pH increases up to 12. Asphaltic seal coats significantly reduced cement-mortar corrosion in both tests. At one site, corrosion increased when the mortar contained Type II cement, a water reducing admixture, pozzolanic material, or a high proportion of sand. At the other sites, none of these parameters significantly affected results. Design and operating measures to minimize stagnation can reduce corrosion effects. Includes 18 references, tables, figures.