Presentation on theme: "No. 19 of 19 GeoFoam by John S. Horvath, Ph.D., P.E. The information presented in this document has been reviewed by the Education Committee of the International."— Presentation transcript:
No. 19 of 19 GeoFoam by John S. Horvath, Ph.D., P.E. The information presented in this document has been reviewed by the Education Committee of the International Geosynthetics Society and is believed to fairly represent the current state of practice. However, the International Geosynthetics Society does not accept any liability arising in any way from use of the information presented.
Lecture Outline What is Geofoam? Geofoam materials Why Use Geofoam? Designing with Geofoam Examples of Geofoam Applications
INTRODUCTION Construction materials are undergoing significant changes with: improvements (e.g. increased strength) to existing, traditional materials development of new functions and applications for existing materials e.g GEOFOAM development of new materials use of recycled waste materials
What is Geofoam? Generic term for closed-cell foams, used in geotechnical applications, that are manufactured from an expansion process using a blowing agent either in a plant or in situ: polymeric (plastic) – expanded polystyrene (EPS) <<< predominant – extruded polystyrene (XPS) – others (polyethylene, polyurethane, polyisocyanurate) glass (cellular glass) cementitious
Full Size EPS block in temporary storage after moulding
Benefits of using Geofoam works with the forces of nature, not against them useful in both new construction and with existing structures provides unique geosynthetic functions multifunctional in many applications compatible and synergistic with other types of geosynthetics
Overview of designing with Geofoam design by function generally treat as an equivalent earth material and use conventional geotechnical analytical methods obtain appropriate parameters for desired analyses and other relevant technical information economic assessment