Pore-structure and microstructural investigation of organomodified/Inorganic nano-montmorillonite cementitious nanocomposites
Paper in proceedings, 2018

In the present paper, the effect of three different types of nano-montmorillonite dispersions (nMt) on the (i) microstructure as witnessed by Scanning Electron Microscopy, (ii) long term density measurements and (iii) pore structure as determined via Mercury Intrusion Porosimetry of Portland - limestone cement formulations have been compared, in an effort to determine the upper and lower bound of nMt addition in cementitious nanocomposites. The reference formulation, contained 60% PC and 40% LS by mass of binder aiming at the minimization of clinker and maximization of other constituents. Two aqueous organomodified NMt dispersions (one dispersed with non-ionic fatty alcohol and the other with anionic alkyl aryl sulphonate) and one aqueous inorganic NMt dispersion (dispersed with sodium tripolyphosphate) were added at 0.5, 1, 2, 4 and 5.5% by mass of solids as replacement of Portland cement. The water to solids ratio was kept constant at 0.3. The inorganic nMt showed the greatest potentials for microstructural enhancement. The way in which the level of the nMt platelet separation affected the pastes was discussed. The research reported was part of a much broader project supported by the EU.

Author

Styliani Papatzani

Hellenic Ministry of Culture, Greece

University of Brighton

Sotirios Grammatikos

Chalmers, Architecture and Civil Engineering, Building Technology

Norwegian University of Science and Technology (NTNU)

Bijan Adl-Zarrabi

Chalmers, Architecture and Civil Engineering, Building Technology

Kevin Paine

University of Bath

AIP Conference Proceedings

0094-243X (ISSN) 1551-7616 (eISSN)

Vol. 1957 0300041

2018 6th International Conference on Nano and Materials Science, ICNMS 2018
Lakeland, USA,

Subject Categories

Ceramics

Materials Chemistry

Other Chemistry Topics

DOI

10.1063/1.5034328

More information

Latest update

1/7/2019 3