南京河西城市生态公园地下防水施工技术

Underground Waterproofing Construction Technology for Hexi Urban Ecological Park in Nanjing

南京河西城市生态公园地下防水项目底板、侧墙和顶板均采用S6结构自防水混凝土,底板及外墙外设2 mm厚高黏橡胶沥青防水涂料+2 mm厚高分子双面自粘防水卷材,顶板采用2 mm厚高黏橡胶沥青防水涂料+4 mm厚SBS改性沥青耐根穿刺防水卷材。本文介绍了该地下工程防水系统的设计,防水涂膜与卷材的施工要点,以及渗漏部位灌浆、细部节点处理技术。

The basement, side walls and roof plate of the underground work of Nanjing Hexi Urban Ecological Park all adopted S6 structure self-waterproofing concrete. A combination of 2 mm thick high-viscosity rubber bitumen waterproofing coating and 2 mm thick double-faced polymer self-adhesive waterproofing membrane was employed for the floor plate and external walls. Meanwhile, 2 mm thick high-viscosity rubber bitumen waterproofing coating and 4 mm thick SBS modified bitumen root resistant waterproofing membrane were used for roof plate. The article introduces the waterproofing system design of this project as well as construction key points of waterproofing coating and membranes, grouting for leaking points and treatment of details.