Ellis Gartner

TL;DR: In this paper, the authors discuss the practicality of replacing portland cements with alternative hydraulic cements that could result in lower total CO 2 emissions per unit volume of concrete of equivalent performance.

TL;DR: The main conclusions of an analysis of low-CO2, eco-efficient cement-based materials, carried out by a multi-stakeholder working group initiated by the United Nations Environment Program Sustainable Building and Climate Initiative (UNEP-SBCI) are presented, based on the white papers published in this special issue as discussed by the authors.

TL;DR: In this article, the authors argue that the cement and concrete industry is contributing positively to the Climate Change Initiative by: Continuously reducing the CO 2 emission from cement production by increased use of bio-fuels and alternative raw materials as well as introducing modified low-energy clinker types and cements with reduced clinker content.

TL;DR: In this article, a new class of clinkers described in this paper can reduce CO2 emissions by 20 to 30% when compared to the manufacture of traditional PC Clinker, and the authors of the cement industry roadmap point out that the extrapolation of existing technologies (fuel efficiency, alternative fuels and biomass, and clinker substitution) will only take us half the way towards these goals.

TL;DR: In this paper, a wide range of alternative approaches to the reduction of CO 2 emissions associated with the manufacture of the binder phase in concrete are discussed, and they are classified broadly as follows: (1) Use alternative fuels and/or alternative raw materials in the manufacturing of Portland-based cements.