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Abstract This study investigated the feasibility of replacing the filler in waterborne coatings with construction and demolition (C&D) waste. The effects of dispersant dosage, ball milling time, pH, and solid… Click to show full abstract
Abstract This study investigated the feasibility of replacing the filler in waterborne coatings with construction and demolition (C&D) waste. The effects of dispersant dosage, ball milling time, pH, and solid loading on the stability of a C&D waste slurry system were studied using viscosity and zeta potential to reflect the stability of the slurry. Viscosity was consistent with storage stability, reflecting actual stability at high solid loading. After ball milling, D(50) and D[4,3] particle sizes were 0.12 μm and 1.00 μm, respectively, which could meet the requirements of commercial waterborne coatings (CWC). Morphology investigation through SEM revealed that the slurry possessed the flake structure similar to CWC. These results suggest the potential of C&D wastes for use as fillers.
Journal Title: Construction and Building Materials
Year Published: 2019
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