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Performance Improved of a Lime and Hemp-Based Concrete through the Addition of Metakaolin

Suzanne Daher*, Amar Benazzouk, Haïkel Ben Hamed, Thierry Langlet

Université de Picardie Jules Verne Avenue des Facultés, Amiens, 80025, France

* Corresponding Author: Suzanne Daher. Email: email

Fluid Dynamics & Materials Processing 2023, 19(5), 1091-1113.


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 Ca2+ 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.


Cite This Article

Daher, S., Benazzouk, A., Hamed, H. B., Langlet, T. (2023). Performance Improved of a Lime and Hemp-Based Concrete Thought the Addition of Metakaolin. FDMP-Fluid Dynamics & Materials Processing, 19(5), 1091–1113.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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