Microstructural and Phase Assemblage Changes in Naturally Carbonated Cement Paste with Supplementary Cementitious Materials (SCMS)

Author(s): W. Soja , H. Maraghechi and K. Scrivener
Paper category: Proceedings
Book title: Proceedings of the 71st RILEM Annual Week & ICACMS 2017,Chennai,India, 3rd -8th September 2017
Editor(s): Manu Santhanam
Ravindra Gettu
Radhakrishna G. Pillai
Sunitha K. Nayar
ISBN: 978-2-35158-196-4
ISBN: 978-2-35158-190-2 (Set)
e-ISBN: 978-2-35158-191-9:
Publisher: Published by RILEM Publications S.A.R.L.
Publication year: 2017
Pages: 362-367
Total Pages: 6
Language : English

Abstract: This study compares the phase assemblage and pore structure variation of Portland cement
and blended cement (containing limestone and burnt oil shale) paste after exposure to natural
carbonation (400 ppm of CO2 and 70 % RH) during six months of exposure. Paste samples
were cured at 95 % RH for 28 days. Reference mixes were exposed to CO2-free atmosphere
to decouple the effect of ongoing hydration and drying from that of carbonation. The phase
assemblage was investigated using XRD-Rietveld refinement. The porosity and pore
structure was assessed based on the results from mercury intrusion porosimetry.

Online publication : 2017
Publication type : full_text
Public price (Euros) : 0.00