Alternative cements: Recent developments and future directions

Juan Pablo Gevaudan, Jorge Osio-Norgaard, Wil V. Srubar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Concrete is the most utilized construction material and the second most consumed material on earth after water. As a consequence, its manufacture and use imparts global durability and environmental consequences. The manufacture of conventional ordinary Portland cement (OPC), the main constituent in concrete, for example, alone accounts for 5-8% of global CO2 emissions worldwide. In addition, the main durability challenges of OPC are associated with the chemistry of its binder. In recent years, increased demand for sustainable building materials with lower CO2 emissions and equivalent (or higher) service lifespans have prompted the development of alternative and novel cementitious materials to supplement and/or in some applications replace the use of OPC concrete in a variety of building and infrastructure engineering projects. Many of these alternative and novel cementitious material systems and approaches generally demonstrate lower CO2 emissions during production (up to 50% CO2 reductions) and increased durability when subjected to harsh conditions (e.g., lower shrinkage, higher acid resistance) when compared to OPC. This paper synthesizes and presents the general classification, characteristics, and current applications of four promising alternative cementitious material systems, namely (1) high-aluminate, (2) super-sulfated slag, (3) alkali-activated, and (4) carbonate-based cements (e.g., bio-cements). We will highlight the basics of alternative cement chemistries, their environmental impacts, and relevant material properties (i.e., fresh- A nd hardened-state properties) compared to OPC concrete. The discussions presented herein are supplemented with specific case-study examples of real-world applications and aim to serve as an inspiring platform for researchers, educators, and engineering professionals to conceptualize how next-generation cementitious materials can (and will) shape our built environment.

Original languageEnglish (US)
Title of host publicationAEI 2019
Subtitle of host publicationIntegrated Building Solutions - The National Agenda - Proceedings of the Architectural Engineering National Conference 2019
EditorsMoses D. F. Ling, Robert M. Leicht, Ryan L. Solnosky
PublisherAmerican Society of Civil Engineers (ASCE)
Pages294-308
Number of pages15
ISBN (Electronic)9780784482261
DOIs
StatePublished - 2019
EventArchitectural Engineering National Conference 2019: Integrated Building Solutions - The National Agenda, AEI 2019 - Tysons, United States
Duration: Apr 3 2019Apr 6 2019

Publication series

NameAEI 2019: Integrated Building Solutions - The National Agenda - Proceedings of the Architectural Engineering National Conference 2019

Conference

ConferenceArchitectural Engineering National Conference 2019: Integrated Building Solutions - The National Agenda, AEI 2019
Country/TerritoryUnited States
CityTysons
Period4/3/194/6/19

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Architecture

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