一、前言混凝土平板面层在施工过程中常现的有离析、泌水、塑性裂缝、剥落、起砂、气孔和细裂缝等几种现象,形成了缺陷或质量事故。最近我们就这些问题,作了一些实质性的分析和探讨,针对各种问题考虑了相应的处理意见和几种养护方法。实践证明,通过这些措施,已使这些常见毛病有所减少。现在我们把收到的有关这方面的资料简介如后。 I. INTRODUCTION In the course of construction, the surface of concrete slabs is often found in several phenomena such as segregation, bleeding, plastic cracks, spalling, sand formation, pores, and fine cracks, resulting in defects or quality accidents. Recently, we have made some substantive analysis and discussion on these issues, and we have considered corresponding treatment opinions and several conservation methods for various issues. Practice has proved that through these measures, these common problems have been reduced. Now we introduce the information we received in this regard as follows.