@Article{fdmp.2023.020348,
AUTHOR = {Suzanne Daher, Amar Benazzouk, Haïkel Ben Hamed, Thierry Langlet},
TITLE = {Performance Improved of a Lime and Hemp-Based Concrete through the Addition of Metakaolin},
JOURNAL = {Fluid Dynamics \& Materials Processing},
VOLUME = {19},
YEAR = {2023},
NUMBER = {5},
PAGES = {1091--1113},
URL = {http://www.techscience.com/fdmp/v19n5/50623},
ISSN = {1555-2578},
ABSTRACT = {This work describes in detail the experimental investigation of the physico-mechanical properties of nonstructural hemp concrete (usually used as insulating wall material) when the Air-lime based Tradial PF70 binder is partially replaced using Metakaolin. The objective is to reduce the amount of free Ca<sup>2+</sup> ions in the binder as these are responsible for the degradation of vegetables particles and can therefore induce a loss of mechanical performances. In order to assess the effectiveness of pozzolanic reaction, amounts of 0%, 10%, and 20% vol. of Air-lime binder were replaced by the Metakaolin material, while testing the mechanical properties of concrete specimens containing 200% and 300% of hemp particles. Through SEM and EDX analysis, a tight relationship has been found to exist between the Metakaolin content and physical-mechanical properties of specimen. The pozzolanic reaction consumes calcium hydroxide from binder to produce Hydrated Calcium Silicates (C-S-H) and in turn, this leads to a decrease in the pH-value of the pore solution which is the main factor responsible for hemp particle degradation.},
DOI = {10.32604/fdmp.2023.020348}
}