Innovative HPMC Mortar Solutions for Enhanced Construction Performance and Sustainability
The chemical structure of MHEC mirrors that of HPMC. It encompasses hydroxyethyl groups linked to the hydroxyl groups within cellulose. The degree of substitution (DS) governs the quantity of hydroxyethyl groups incorporated, influencing MHEC's solubility, viscosity, and other intrinsic traits. MHEC remains stable under standard conditions and exhibits resistance to microbial degradation.
This study was conducted using a CEM I 52.5N sample (“Milke®” from HeidelbergCement AG, Heidelberg, Germany). Its properties are presented in Table 1. Composition of the cement was obtained by Q-XRD using a Bruker axs D8 Advance instrument (Bruker, Karlsruhe, Germany) with Bragg–Brentano geometry. Topas 4.0 software was employed to quantify the amounts of individual phases present in the sample by following Rietveld's method of refinement. The amounts of gypsum (CaSO4·2H2O) and hemi-hydrate
(NDJ-1,2% solution, 20℃)
Detailed introduction to daily chemical grade hydroxypropyl methyl cellulose: