Effects of hemp fibers on durability properties of concrete tobe used in agricultural buildings

Concrete is the most common construction material used worldwide. It is also commonly used in construction of agricultural buildings. With the rapid developments in technology, different building materials with superior properties are being researched in order to improve different properties of concrete and eliminate its disadvantaged aspects and to obtain lighter, insulated, more economical and useful construction materials. One of the applications to improve the negative properties of concrete with low tensile strength is to add various fibers into the concrete mixtures. Hemp stalks play an important role in recycling vegetable wastes. Therefore, it is highly significant to recycle or transform these materials. In this study, which was carried out to determine the usability of hemp fibers in concrete mixtures by examining the effects on concrete, to help them evaluate as a building material in the construction industry and to contribute to the preservation of ecological balance, the effects of hemp fibers added into concrete mixture on fresh and hardened concrete were examined. Concrete samples were supplemented with 0 (control), 1, 2.5 and 5% by volume hemp fibers with a fiber length of between 4-6 cm. slump, specific gravity, compressive strength, tensile strength, water absorption, freeze-thaw, ultrasound pulse velocity and thermal conductivity coefficients were determined. Compressive strength, specific gravity, ultrasound pulse velocity and thermal conductivity coefficients decreased, but tensile strengths increased with increasing fiber contents.