Journal
CEMENT AND CONCRETE RESEARCH
Volume 114, Issue -, Pages 2-26Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2018.03.015
Keywords
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Funding
- International Energy Agency (IEA)
- UNEP SBCI
- World Business Council for Sustainable Development - Cement Sustainability Initiative (WBCSD-CSI)
- LafargeHolcim
- State of Sao Paulo Research Foundation (FAPESP) [2016/052785]
- SINOMA
- GCP Applied Technologies
- InterCement
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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. We believe that Portland-based cement approaches will dominate in the near future due to economies of scale, levels of process optimisation, availability of raw materials and market confidence. Two product-based approaches can deliver substantial additional reductions in their global CO2 emissions, reducing the need for costly investment in carbon capture and storage (CCS) over the next 20-30 years: 1. Increased use of low-CO2 supplements (SCMs) as partial replacements for Portland cement clinker. 2. More efficient use of Portland cement clinker in mortars and concretes. However, other emerging technologies could also play an important role in emissions mitigation in the longer term, and thus merit further investigation.
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