Effects of PCE on the Dispersion of Cement Particles and Initial Hydration

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ID: 272651
2021
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Abstract
The effects of polycarboxylate superplasticizers (PCEs) on the dispersing properties and initial hydration of cement particles with various water-to-cement (w/c) ratios was investigated, including the water film thickness (WFT), rheology, fluidity, adsorption of PCEs, zeta potential, degree of hydration, hydration products. The experimental results demonstrate that the initial rheological and fluidity parameters were more sensitive to the PCE dosage at a lower w/c because the WFT and the zeta potential on cement particles change more significantly. Moreover, the higher adsorption amounts of the PCEs at a lower w/c lead to a stronger inhibition of the initial hydration, whilst, at the same PCE dosage, the cement pastes have a more rapid fluidity loss and quicker hydration reactions at a higher w/c due to a lower adsorption amount of the PCE on cement particles.
Reference Key
zhu2021materialseffects Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Weiwei Zhu;Qingge Feng;Qi Luo;Xiukui Bai;Xianhao Lin;Zhao Zhang;Zhu, Weiwei;Feng, Qingge;Luo, Qi;Bai, Xiukui;Lin, Xianhao;Zhang, Zhao;
Journal Materials (Basel, Switzerland)
Year 2021
DOI
10.3390/ma14123195
URL
https://www.mdpi.com/1996-1944/14/12/3195/htm
Keywords
pce water-to-cement ratios dispersing properties initial hydration

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