Möjligheter och utmaningar för ökad användning av miljövänlig betong i anläggningsprojekt
Sammanfattning: Reducing carbon dioxide emissions is one of the biggest and most important tasks in modern times in the world. Sweden has a national climate target that net emissions of carbon dioxide should be zero by 2045. Construction projects in Sweden account for approximately 8% of total emissions, where concrete is one of the building components with the largest emissions. Concrete is one of the world's most widely used building materials and accounts for approximately 43 percent of emissions in the construction industry. In order to reduce emissions and for Sweden to reach the climate goals by 2045, a change in the current use of concrete is required. One measure could be for the construction industry to use more environmentally friendly concrete with less carbon dioxide emissions. Increased use of environmentally friendly concrete can contribute to a change in the construction industry for a reduction in carbon dioxide emissions. The purpose of the study is that the work will investigate what challenges there are in implementing environmentally friendly concrete and that the study will propose what measures are required to promote the use of environmentally friendly concrete for contractors in construction projects. The aim of the study is to develop challenges and potential measures to promote the implementation of environmentally friendly concrete in the construction industry for contractors. In order to be able to answer the purpose, the following research questions have formed the basis of the study: 1. What are the challenges for construction contractors to increase the use of environmentally friendly concrete in construction projects? 2. What measures are required to promote increased use of environmentally friendly concrete in future construction projects? The study is based on an interview study with respondents who work with the implementation of environmentally friendly concrete in some way. The interview study consisted of nine respondents whose roles were project manager, client and concrete researcher. That the study is based on an interview study that has interviewed people with different roles in the construction industry was to broaden the study to get more perspectives on challenges and measures with the use of environmentally friendly concrete. The challenges that have emerged in the study of implementing environmentally friendly concrete in construction projects are limited regulations, time aspect, dependence on key people, internal communication, uncertainty in deliveries and rumours in the construction industry. Based on the challenges, four different measures have been presented to promote the use of environmentally friendly concrete. The four measures are that time planning should take place earlier in the process, focus more clearly on feedback on environmental aspects, more organization-driven projects on environmental choice and to introduce a budget for innovation solutions in the construction industry. Environmentally friendly concrete is constantly being developed and the study must be relevant even when the development of environmentally friendly concrete has progressed further. The regulations in the construction industry affect all the challenges and measures presented in the study. In order to be able to approach net zero emissions from concrete in the construction industry, updated regulations are required that call for change and innovations.
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