Next Article in Journal
So Close Yet So Far Apart: Contrasting Climate Change Perceptions in Two “Neighboring” Coastal Communities on Aotearoa New Zealand’s Coromandel Peninsula
Next Article in Special Issue
Production of Geopolymeric Mortars Containing Forest Biomass Ash as Partial Replacement of Metakaolin
Previous Article in Journal
Collaborative Conservation of a Socio-Ecological Production Landscape through ICT Tools
Previous Article in Special Issue
Geopolymerization Ability of Natural and Secondary Raw Materials by Solubility Test in Alkaline Media
Article Menu
Issue 3 (September) cover image

Export Article

Open AccessArticle

Calcium Sulfoaluminate, Geopolymeric, and Cementitious Mortars for Structural Applications

Department of Materials, Environmental Sciences and Urban Planning, Università Politecnica delle Marche, via Brecce Bianche 12, Ancona 60131, Italy
School of Engineering, Università degli Studi della Basilicata, Viale dell’Ateneo Lucano 10, Potenza 85100, Italy
Institute of Atmospheric Sciences and Climate, National Research Council (ISAC-CNR), Via Gobetti 101, Bologna 40129, Italy
Author to whom correspondence should be addressed.
Environments 2017, 4(3), 64;
Received: 27 July 2017 / Revised: 11 September 2017 / Accepted: 14 September 2017 / Published: 16 September 2017
(This article belongs to the Special Issue Environmentally Friendly Geopolymer Composites)
PDF [3198 KB, uploaded 18 September 2017]


This paper deals with the study of calcium sulfoaluminate (CSA) and geopolymeric (GEO) binders as alternatives to ordinary Portland cement (OPC) for the production of more environmentally-friendly construction materials. For this reason, three types of mortar with the same mechanical strength class (R3 ≥ 25 MPa, according to EN 1504-3) were tested and compared; they were based on CSA cement, an alkaline activated coal fly ash, and OPC. Firstly, binder pastes were prepared and their hydration was studied by means of X-ray diffraction (XRD) and differential thermal-thermogravimetric (DT-TG) analyses. Afterwards, mortars were compared in terms of workability, dynamic modulus of elasticity, adhesion to red clay bricks, free and restrained drying shrinkage, water vapor permeability, capillary water absorption, and resistance to sulfate attack. DT-TG and XRD analyses evidenced the main reactive phases of the investigated binders involved in the hydration reactions. Moreover, the sulfoaluminate mortar showed the smallest free shrinkage and the highest restrained shrinkage, mainly due to its high dynamic modulus of elasticity. The pore size distribution of geopolymeric mortar was responsible for the lowest capillary water absorption at short times and for the highest permeability to water vapor and the greatest resistance to sulfate attack. View Full-Text
Keywords: calcium sulfoaluminate cement; durability; geopolymer; hydration; mechanical strength; microstructure; mortar; portland cement calcium sulfoaluminate cement; durability; geopolymer; hydration; mechanical strength; microstructure; mortar; portland cement

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Mobili, A.; Belli, A.; Giosuè, C.; Telesca, A.; Marroccoli, M.; Tittarelli, F. Calcium Sulfoaluminate, Geopolymeric, and Cementitious Mortars for Structural Applications. Environments 2017, 4, 64.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Environments EISSN 2076-3298 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top