TY - JOUR
T1 - Konjac glucomannan
T2 - A promising environmental friendly anti-washout agent for ordinary Portland cement mortar
AU - Zhang, Hongping
AU - Tang, Pengfei
AU - Chen, Yushan
AU - Hu, Shuchun
AU - Tang, Youhong
AU - Yang, Kun
AU - Wang, Qingyuan
PY - 2024/11/1
Y1 - 2024/11/1
N2 - Adding polymer-based anti-washout admixture (AWA) is considered one of the most effective methods to improve the anti-washout performance of underwater-cement. However, the addition of polymer-based anti-washout admixture suffers from the unclear anti-washout mechanism and the potential micro-plastic pollution. This study reported an eco-friendly, high-performance AWA based on konjac glucomannan (KGM) extracted from biomass-based Konjac. The results from the interaction between the KGM and the pore solution indicate that KGM can effectively increase the viscosity of underwater cement mortar by chelation ions. The increase of viscosity made by introducing a small amount of KGM solution (0.2 wt%) can effectively enhance the anti-washout performance of underwater cement mortar. Simultaneously, introducing KGM will not adversely affect other working properties of cement mortar. This study not only proves the mechanism of KGM-based AWA to adjust the anti-washout performance of cement materials but also provides a new strategy for developing green, high-performance AWAs.
AB - Adding polymer-based anti-washout admixture (AWA) is considered one of the most effective methods to improve the anti-washout performance of underwater-cement. However, the addition of polymer-based anti-washout admixture suffers from the unclear anti-washout mechanism and the potential micro-plastic pollution. This study reported an eco-friendly, high-performance AWA based on konjac glucomannan (KGM) extracted from biomass-based Konjac. The results from the interaction between the KGM and the pore solution indicate that KGM can effectively increase the viscosity of underwater cement mortar by chelation ions. The increase of viscosity made by introducing a small amount of KGM solution (0.2 wt%) can effectively enhance the anti-washout performance of underwater cement mortar. Simultaneously, introducing KGM will not adversely affect other working properties of cement mortar. This study not only proves the mechanism of KGM-based AWA to adjust the anti-washout performance of cement materials but also provides a new strategy for developing green, high-performance AWAs.
KW - Biomass-based polymer
KW - Deacetylation reaction
KW - in situ gel reaction
KW - Konjac glucomannan
UR - http://www.scopus.com/inward/record.url?scp=85198004108&partnerID=8YFLogxK
U2 - 10.1016/j.indcrop.2024.119189
DO - 10.1016/j.indcrop.2024.119189
M3 - Article
AN - SCOPUS:85198004108
SN - 0926-6690
VL - 219
JO - Industrial Crops and Products
JF - Industrial Crops and Products
M1 - 119189
ER -