In the cement pavement construction, application of plastic cover, to prevent contamination of the surface damage of cement slurry, the surface pattern and writing.
在水泥路面施工时，应用塑料膜将井盖盖好，以防止水泥浆沾染表面，损伤表面花纹、字迹。
2
It is recommended that a cement slurry contamination prevention system be set up to improve the cementing quality under different conditions at different areas.