Hemp Thermal Insulation Concrete with Alternative Binders, Analysis of their Thermal and Mechanical Properties

2nd International Conference on Innovative Materials, Structures and Technologies

Sinka, M.^1 ; Sahmenko, G.^1 ; Korjakins, A.^1 ; Radina, L.^1 ; Bajare, D.^1

Riga Technical University, Faculty of Civil Engineering, Institute of Materials and Structures, Kalku Str. 1, Riga

LV-1658, Latvia^1

关键词: Carbon negative materials;    Cement compositions;    Large-scale currents;    Manufacturing process;    Thermal and mechanical properties;    Thermal insulation capabilities;    Thermal insulation materials;    Water absorption properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/96/1/012029/pdf
DOI  :  10.1088/1757-899X/96/1/012029

来源: IOP

【 摘 要 】

One of the main challenges that construction industry faces today is how to address the demands for more sustainable, environmentally friendly and carbon neutral construction materials and building upkeep processes. One of the answers to these demands is lime-hemp concrete (LHC) building materials - carbon negative materials that have sufficient thermal insulation capabilities to be used as thermal insulation materials for new as well as for existing buildings. But one problem needs to be overcome before these materials can be used on a large scale - current manufacturing technology allows these materials to be used only as self-bearing thermal insulation material with large labour intensity in the manufacturing process. In order to lower the labour intensity and allow the material to be used in wider applications, a LHC block and board production is necessary, which in turn calls for the binders different from the classically used ones, as they show insufficient mechanical strength for this new use. The particular study focuses on alternative binders produced using gypsum-cement compositions ensuring they are usable in outdoor applications together with hemp shives. Physical, mechanical, thermal and water absorption properties of hemp concrete with various binders are addressed in the current study.