RT Journal Article
T1 Understanding the effect of MPEG-PCE's microstructure on the adsorption and hydration of OPC
A1 Emaldi, Iñaki
A1 Erkizia, Edurne
A1 Leiza, Jose Ramon
A1 Dolado, Jorge S.
AB Polycarboxylic ethers or polycarboxylate (PCEs) are one of the most employed superplasticizers in construction. However, the understanding of their microstructure–property relationship is still incomplete. Recently, a theoretical model was proposed that relates the microstructure–conformation of the PCE to its effect on the adsorption onto cement particles and cement hydration time. In this work, the effects of a wide range of PCEs with different side chain lengths (P = 5, Group 1; P = 20, Group 2; and P = 45 and 113, Group 3) having flexible backbone worm conformation except one which has stretch backbone worm conformation (P = 113) were experimentally investigated for their effect on adsorption and cement hydration. It is found that PCEs from Group 1 show electrostatic repulsion as dispersing mechanism, unlike PCEs from Groups 2 and 3. Furthermore, the prediction of the theoretical model is also assessed for all the studied PCEs. Only Group 1 PCEs (shortest side chains) showed deviation from the theoretical predictions, and it was attributed to their different behaviors from the standard PCEs for which the theoretical model was developed.
SN 0002-7820
YR 2023
FD 2023-04
LK https://hdl.handle.net/11556/4548
UL https://hdl.handle.net/11556/4548
LA eng
NO Emaldi , I , Erkizia , E , Leiza , J R & Dolado , J S 2023 , ' Understanding the effect of MPEG-PCE's microstructure on the adsorption and hydration of OPC ' , Journal of the American Ceramic Society , vol. 106 , no. 4 , pp. 2567-2579 . https://doi.org/10.1111/jace.18912
NO Publisher Copyright: © 2022 The American Ceramic Society.
NO The authors thank the financial support received from EUSKAMPUS Fundazioa, POLYMAT (UPV/EHU), and Tecnalia to carry out the project. The work was carried out under the umbrella of the LTC “Green Concrete”. The authors would like to acknowledge the funding from Misiones Euskampus 1.0 (project “HEMEN”). J. R. Leiza and I. Emaldi also acknowledge the funding from Basque Government (Project IT‐1512‐22) and MINECO (PID2021‐123146OB‐I00), and J. S. Dolado acknowledges the funding from the Gobierno Vasco UPV/EHU (Project No. IT‐1246‐19).
DS TECNALIA Publications
RD 30 jul 2024