Publication Abstract

Proceedings - Fourth International Conference - Piling and Deep Foundations, 1991, Stresa, Italy, (DFI)

7 Quality Aspects of Reinforced Augercast Piles
M. Bottiau; Socofonda SA, Brussels, Belgium K.R. Massarsch; Geo Engineering SA, Waterloo, Belgium

Augercast piles require in spite of their simplicity a high degree of quality control. Modern electronic systems can be used to control and document all phases of pile installation. The installation of reinforcement to great depth in conventional augercast piles can be difficult and can affect the quality of the pile. The present paper presents two new concepts, which make it possible to reinforce augercast piles over the full shaft length. One alternative is to construct augercast piles with metal fiber concrete. The results from extensive field and laboratory tests show the excellent quality of fiber reinforced concrete in tension and bending tests. Full scale lateral pile load tests and pull out tests on fiber reinforced augercast piles are presented which support the conclusions from laboratory tests. Two case histories describe the use of a special guiding system for installation of heavy pile reinforcement. Reinforcement cages were installed to depths in excess of 15m and in inclined planes. With experienced field personnel and use of proper equipment it is possible to construct reinforced augercast piles of high and consistent quality even under difficult conditions.

 article #449; publication #37 (IC-1991-IT)