Paper Title
Study on Green Concrete

Cement and concrete may have an important role to play to fulfil its obligation, agreed at the conference, to reduce the total CO2 emission by 21 % . This is because approximately 2 % of total CO2 emission stems from cement and concrete production. There is considerable knowledge about how to produce concrete with a reduced environmental impact. However, it is not known to a sufficient degree, and with what technology, this “green” concrete can be applied in practice in buildings and structures. For instance, there is not enough information about how the properties of green concrete, such as compressive strength, durability, fire performance, casting and execution, hardening, and curing are affected by the measures to reduce the environmental impact of concrete. This paper gives an overview of the present state of affairs of concrete types that have reduced environmental impact, including the use of low energy cement, recycling of crushed concrete as aggregate, the use of fly ash and micro silica, etc. There is a description of among other things the possibilities of using “green” concrete within the existing standards and specifications, research projects about green concrete, life cycle assessments, etc. The potential environmental benefit to society of being able to build with “green” concrete is huge. Keywords - conference, Green concrete, Concrete mix design, Packing calculation, Demo bridge, Specifications, Environmental management, Life cycle assessment, Cleaner technologies.