Abstract: During construction,the trass cement 300 # were poured in partial blocks in Xin’anjiang Dam,so,it is the weakest part in the concrete of dam body.According to the comments of first periodic inspection,the dam face poured with the trass concrete300 # were re-quired to be carried out protection face treatment.It was adopted wet-guniting acrylate latex mortar technique in construction.The prac-tice proved to be successful and effective.It is simple to operate,speedy to construct and economic as well,particularly suitable to anti-seepage and anti-erosion protective facing with great dimension and thin layer.

摘要： 新安江大坝浇筑施工时由于大坝部分坝段使用了低标号的300#火山灰水泥，构成了坝体混凝土的最薄弱环节。根据大坝首次安全定期检查的意见，300#火山灰混凝土坝面需进行护面处理。施工采用机械湿喷丙乳砂浆工艺。实践证明，护面处理工艺是成功的，达到了设计预期效果，具有喷层致密、不开裂，施工速度快，操作简单，经济性好等优点，特别适用于大面积薄层防渗防腐护面工程。