Vägen fram för schaktmassor : En studie inom transporter av schaktmassor och dess koldioxidutsläpp

Sammanfattning: According to the Swedish Government, Sweden's goal is to not have any net greenhouse gas emissions by the year 2045. Sweden has come a long way on many levels with its high environmental ambitions, but one sector that is falling behind is the transports with heavy trucks. In 2018, the carbon dioxide emissions were projected to increase by 12 percent compared to 1990. Cities are densified and are expanding, with landfills and recycling facilities moving further and further away, resulting in an increasing quantity of transports of excavated soils and longer traveling distances. This is something that needs to be addressed.This report is written with the aim of investigating whether it is possible to reduce carbon dioxide emissions generated by the transportation of excavated soils from construction projects in the Stockholm region. In addition, this report aims to shed light on the problems surrounding the handling of excavated soils that exists today and provide inspiration for ways to reduce emissions within the construction industry.Five construction projects have been examined regarding the amount of excavated soil and where this soil has been transported. Calculations of carbon dioxide emissions have been made and compared with an optimized alternative in the form of a Mass Logistics Centre.It has been found that the greatest factor for the emissions produced by the transports are not the transports themselves, but that a number of underlying factors affect the length of transport distances, which in turn affect the emissions. A large part of the problem lies in a somewhat inadequate guidance of how to manage excavated soils, which results in limited management possibilities. Ambiguities regarding the current regulations also cause large amounts of excavated soil to be transported long distances instead of being reused on site.To achieve a generality and to examine the applicability in the management of excavated soils, interviews with experts have been conducted. Investigating what the industry believes to be the biggest problems, what should be done, and what the future looks like is important on a topic that covers such a large area.It turns out that the use of a Mass Logistics Centre can to some extent have positive effects on the environment. But what is most important at the present time is to make solid suggestions for changed rules, guidelines and boundaries for the government and the authorities. Then they can more easily publish clear manuals, regulations, and guidelines. Fortunately, these proposals are already underway.