Abstract

Due to the increase in production of construction materials, the emission of carbon dioxide levels and the requirement for producing materials with a less environmental footprint is gaining more attention. This paper focuses on the study of a special kind of concrete (without stone aggregates) called flax-lime concrete to decrease amount of environmental footprint via the use of a lime-based binder with a waste material of flax fiber production (i.e. flax shives). Nine flax-lime concrete beam specimens (51 mm × 152 mm x 610 mm) with the same mix proportions were prepared. A layer of jute fabric mesh was also placed at the center of the specimens as a reinforcement. The position and number of layers of the fabric mesh were varied to improve the load capacity and deflection under three-point bending. The physical and mechanical properties (namely: density, load-carrying capacity, failure mode, and load-deflection behavior) of the flax-lime concrete specimens were studied. Overall, the variation in position and number of layers of jute fabric increased the bending capacity and energy absorption in flax-lime concrete blocks. The system can be used in buildings for infilling masonry blocks and filling wall cavities as insulation materials.

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