Investigation into the Solubility and Stability of PCE Superplasticizers in Pore Solutions of Alkali-Activated Slag
SSRN, ISSN: 1556-5068
2024
- 52Usage
Metric Options: Counts1 Year3 YearSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
Stability of HPEG, EPEG and MPEG PCE superplasticizers of varied molecular structures in NaOH- and NaSiO-activated slag was investigated. Relative to their solubility, the order MPEG>HPEG>EPEG was found in both activator solutions via the “cloud point” method. GPC spectra confirmed that at RT all PCEs don´t decompose in activator solutions, independent of activator concentration and exposure time (1h/1d). However, at 50°C MPEG PCE hydrolyzes. “Mini-slump” tests in NaOH-activated AAS confirmed superior dispersing effectiveness of HPEG PCE, and least effect from MPEG PCE. No PCE could disperse NaSiO-activated slag. Adsorption tests revealed non-Langmuir behavior in NaOH and almost no adsorption in NaSiO pastes. DLS measurements revealed steric sizes of <10 nm for the PCEs in 1-3 M NaOH and 0.25M NaSiO, and agglomerates (Rh > 1 μm) at higher NaSiO concentration. Apparently, PCE effectiveness in AAS is controlled by a combination of solubility, adsorption and molecular conformation/aggregation in AAS pore solutions.
Bibliographic Details
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know