Use of marginal geomaterials, industrial by-products and recycled wastes in engineering embankments has been an important aspect in the strategy of sustainable construction in recent years in Europe. These materials exhibit a wide variety of characteristics and behaviour due to the specific mineralogical composition and structure or the diversity of industrial processes that produce them. The existing codes of practice for earthworks are mostly prepared for conventional geological materials, soils and rocks. In the future the EU regulation for the marketing of construction products will not distinguish construction products by their origins. Conventional tests which have been in regular use in geotechnics for decades are not able to recognize some specific properties of marginal materials and industrial by products such as durability, strength and volume stability due to the delayed chemical reactions, leachability etc. The paper outlines some specific properties of marginal materials and industrial by-products as fill for embankments which must be considered at all stages of the design, construction and post construction monitoring of embankments.
B.04 Guest lecture
COBISS.SI-ID: 6791521The invention ensures economically efficient obtaining of construction material, which is be chemically neutral, inert and acceptable for the environment and human health, by using the soil, in which the concentration of water soluble compounds of heavy metals, in particular those on the basis of arsenic, cadmium, lead and zinc, essentially exceeds the values, which should be still acceptable for environment and/or not harmful for human health, so that the content of said contaminants in such obtained material should be below each pre-determined values.
F.32 International patent
COBISS.SI-ID: 2341991Contamination of soils with toxic metals is a major problem worldwide and is the subject of extensive research. Toxic metals are a group of inorganic elements, of which lead, chromium, arsenic, zinc, cadmium, copper, mercury and nickel are most commonly found in contaminated sites. The type of pollutant is directly related to the activities that took place at the pollution site. The lecture addressed the most important aspects of this issue, including the basics of contamination and immobilization of the soil, and the most common approaches to remediation. In the main part of the lecture, examples of in-situ remediation of the polluted soil from ashes originating in the paper industry were presented. The topic of the last part of the lecture was the environmental aspects of rehabilitation, especially in the light of the effective long-term immobilization of toxic metals and the presentation of the life cycle of two scenarios for dealing with contaminated soil.
B.04 Guest lecture
COBISS.SI-ID: 2346343In the lecture within the Environmental Day of the Economy, the issues related to contaminated soils in Slovenia and worldwide were presented and an example of good in-situ remediation practices in the area of the abandoned zinc smelter in Celje, which was carried out in 2014 and 2015. In this process paper ash was used as a remediation additive, which was mixed with the soil in the presence of optimum moisture. After compaction in the geotechnical fill, the material exhibits chemical inertness.
F.18 Transfer of new know-how to direct users (seminars, fora, conferences)
COBISS.SI-ID: 2305639The final report on testing and installation of the Stontech 2 construction product in the area of Stara Cinkarna in Celje in 2014 and 2014, which presents a technical report for the issuing of the Slovenian Technical Approval and the field execution of in-situ remediation itself. The study also presents all the laboratory and field results.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 2159975