Title:
Effects of Hydroxyethyl Cellulose on Hydration, Rheology, and Strength in Various Cement Blends
Author(s):
Xiangyu Wang
Publication:
Web Session
Volume:
ws_S25_XiangyuWang.pdf
Issue:
Appears on pages(s):
Keywords:
DOI:
Date:
3/30/2025
Abstract:
This study explores the impact of hydroxyethyl cellulose (HEC) on the hydration kinetics, rheological properties, and compressive strength of limestone calcined clay cement (LC3) and reactive magnesium oxide cement (RMC), utilizing ordinary Portland cement (OPC) as a reference comparison. By using isothermal calorimetry, rheological tests, compressive strength evaluations, and thermogravimetric analysis, the research uncovers how HEC influences these cementitious systems. The findings highlight a significant retardation effect of HEC on the early hydration stages of OPC and LC3, which was not present in the RMC. Additionally, HEC substantially increased the plastic viscosity, yield stresses, and thixotropy for all examined binders, with the most notable impacts observed in the RMC-based pastes. Despite the rheological improvements, introducing HEC was associated with reducing compressive strength across all cement types. These findings underscore the significant role of HEC in modifying the performance of LC3 and RMC, offering crucial insights for optimizing these sustainable cementitious systems, especially in applications demanding enhanced rheological performance, such as 3D printing.