With an increase in PAM concentration, the percentage of agglomerated particles (≥0.5 mm) showed an increasing trend.
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Comparison of Solidification Characteristics between Polymer-Cured and Bio-Cured Fly Ash in the Laboratory.
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The sentences
With the increase in PAM concentration, the WER of samples showed a decreasing trend ( Figure 4 a), which was because PAM bound the fine FA particles into large agglomerates.