摘要
PHP(partiallyhydrolyzedpolyacrylamide)泥浆是一个特别适合于超长超大直径钻孔灌注桩施工的泥浆系统。制作原料、制作过程、循环系统及施工控制等是决定其经济性、高效性的关键因素。苏通大桥工艺试桩工程根据工程场区独特的地质、水文条件确定了适合该工程的PHP泥浆循环系统,以实践证明采用该系统可以实现桩侧泥皮厚度小于1mm、桩底沉渣厚度为0cm。
PHP (partially hydrolyzed polyacrylamide) slurry is especially suitable for the drilling of overlength and extra-large-diameter bored piles. Its economical efficiency and construction efficiency are dependent on the following key factors: manufacturing of raw materials, manufacturing process, cycling system and construction control. According to geological and hydrologic conditions of the site of Su-Tong Bridge, the testing pile project has adopted PHP slurry cycling system, which has been proved in the practice to have achieved thickness of mud cake around piles less than 1 mm and thickness of sediments at pile tip of zero.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第14期2571-2575,共5页
Chinese Journal of Rock Mechanics and Engineering
