Effect of polyaspartic acid on the setting time and mechanical properties of α-hemihydrate gypsum

Zhenzhen Fang,Wenqi Gao,Hongqi Ai,Meishan Pei,Wenjuan Guo,Luyan Wang

Construction and Building Materials（2023）

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摘要

•PASP is a biodegradable protein-based retarder.•PASP has less strength loss compared with previous retarders.•PASP prolongs the dissolution of α-HH and crystallization process of gypsum.•The conformation of PASP affects the interaction between PASP and Ca2+ in calcium sulfate solution.

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关键词

Polyaspartic acid,Adsorption,Retarding mechanism,Hydration process,Molecular dynamics simulation

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