海绵城市建设中透水混凝土面层施工要点

KEY POINTS FOR PERVIOUS CONCRETE SURFACE CONSTRUCTION IN SPONGE CITY

青岛市海绵城市试点区建设工程透水混凝土面层施工完成后,验收一次合格率仅83%,将目标合格率提高为95%,针对混凝土透水性差和表面掉石子两项造成一次合格率低的原因,采取多项质量控制对策,使总体合格率超过96%。

In Qingdao sponge city pilot zone construction project,the one-off acceptance qualification rate of pervious concrete surface construction was only 83%,so the targeted qualification rate was increased up to 95%.Poor water permeability of concrete and surface gravel coming off were two main factors causing low one-off acceptance qualification rate,so multiple quality control measures were adopted to guarantee the general qualification rate to be over 96%.