Mechanical And Environmental Performances Of Sulpho-Based Rapid Hardening Concrete

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Title: Mechanical And Environmental Performances Of Sulpho-Based Rapid Hardening Concrete

Author(s): Davide Sirtoli; Sergio Tortelli; Paolo Riva; Maurizio Marchi; Roberto Cucitore; Mankaa Nangah

Publication: Special Publication

Volume: 305

Issue:

Appears on pages(s): 47.1-47.8

Keywords: CSA cement; CSA/OPC blend; EPD

Date: 9/1/2015

Abstract:
Calcium-sulphoaluminate cement (CSA) represents an eco-friendly alternative to ordinary portland cement (OPC), thanks to its lower energy consumption, special production process and raw materials. Life-Cycle Analysis (cradle-to-gate) according to ISO 14040 standard series showed a potential for substantial reduction of the environmental impacts, as well as natural resource use. Nowadays, CSA cement is being used more in construction industry thanks to its high early-age compressive strength and shrinkage-compensating behavior. This paper presents concrete mixtures with pure CSA and with OPC-CSA blends both in terms of environmental impact indicators from Environmental Product Declarations, and in terms of mechanical and rheological performance focusing on workability, compressive and flexural strength development, drying shrinkage and dynamic elastic modulus evolution from very early ages.