Polymer Based Filler Materials as Infill for GFRP Pile Connector


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Recently glass fibre reinforced polymer (GFRP) tubular piles have been developed for civil engineering applications instead of conventional concrete piles. Considering their suitable applications, the new polymer based filling materials are being developed at the University of Southern Queensland as a part of work done for timber pile rehabilitation. This ongoing project aims to replace portion of the deteriorated timber pile by using GFRP piles. Due to good compressive strength, pumpability and workability, the new polymer base materials are to be filled in between GFRP pile and existing timber pile base. An ongoing research program has been initiated to improve fundamental understanding of these materials and to provide the knowledge required for their broad utilization. In this development, sample trial mixes were considered based on several weight percentages of polymer resin, fly ash and sand. Material parameters such as compressive strength, stiffness, shrinkage and gel time were achieved from the experimental investigation. It has been found that most polymer based trial mixed fillers have high compressive strength and considerable plastic region with more than 10% strain. These results imply that the polymer based filling materials are suitable for both compression and tensile loading situations. However, the behaviour of fillers with GFRP pile connector under different loading conditions is yet to be fully understood.



Key Engineering Materials (Volumes 471-472)

Edited by:

S.M. Sapuan, F. Mustapha, D.L. Majid, Z. Leman, A.H.M. Ariff, M.K.A. Ariffin, M.Y.M. Zuhri, M.R. Ishak and J. Sahari




C. S. Sirimanna et al., "Polymer Based Filler Materials as Infill for GFRP Pile Connector", Key Engineering Materials, Vols. 471-472, pp. 763-768, 2011

Online since:

February 2011




[1] I. Scott and K. Wheeler: Application of Fibre Reinforce Polymer Composite in Bridge Construction, IPWEA NSW Division Annual Conference (2001).

[2] R. Lopez-Anido, A.P. Michael and T.C. Sandford: Experimental characterization of FRP composite wood pile structural response by bending tests, Marine Structures Vol. 16 (2003), pp.257-274.

DOI: https://doi.org/10.1016/s0951-8339(03)00021-2

[3] C. Vipulanandan and E. Paul: Characterization of Polyester Polymer and Polymer Concrete, J. Mat. in Civ. Eng Vol. 5 (1993), pp.62-82.

[4] C.D. Dudgeon: Engineered Materials Handbook (ASM International, Metals Park 2003).

[5] ASTM D 695, Standard Test Method for Compressive Proper-ties of Rigid Plastics. West Conshohocken: American Society for Testing and Materials.

[6] ISO 178: 1993, Plastics Determination of Flexural Properties, Geneva, International Organisation for Standardisation.

[7] ASTM D 6289-98, Standard Test Method for Measuring Shrinkage from Mold Dimensions of Molded Thermosetting Plastics: American Society for Testing and Materials.

DOI: https://doi.org/10.1520/d6289