Abstract
A superabsorbent polymer material has been used in the broad application fields including civil and architecture engineering area since 1960s. The superabsorbent polymer suspension, i.e. SAP suspension, has been produced by mixing the superabsorbent polymer material with water. The material characteristics of SAP suspension has been investigated experimentally and it has been indicated that SAP suspension improves the borehole stability and the better cast in-situ pile performance is achieved compared with those of bentonite clay suspension. SAP suspension has been employed in two cast in-situ pile construction sites and SAP suspension quality management procedure has been devised. Consequently, the high performance of SAP suspension for the stabilizing suspension for excavation and the application limits of SAP suspension have been demonstrated.
