Testing of by-products in earth construction

This article gives a very brief description of some demonstration projects carried out using different by-products, demolition waste (crushed concrete, brick rubble, crushed stone wool), coal fly ash, old asphalt pavements, blast-furnace slag, granulated peat fly ash, plastic waste, hematite, stabilised paper mill fibre sludge, etc.Test structures were built either as trial structures or as functional parts of real construction projects.The structures were built in accordance with general rules set by the pilot construction project team of Tekes's Ecogeotechnology R&D program, and were instrumented to measure and follow up the behaviour of the structure and materials.General remarks have been made on the usefulness of the field tests as a research tool in the chain from waste to construction material.