The main objective is to find optimum amount of fibres, test experimentally impact on the composite’s properties and to determine select members capacity.
The main goal of the experimental tests described in this paper was to estimate cracking and ultimate momentsin relations to type and amount of basalt fibres used. In all conducted tests positive influence of basalt fibres BCC-25 (series S2BF) and MiniBarsTM (series S3MB) on element’s load capacity in relation to references sample (series S1S) were observed. Destruction of S2BF series beams was similar to that observed in bending of concrete elements, while S3MB where similar to collapse mode observed in reinforced concrete beams.
Usage of basalt fibres in pavement concrete slabs is a good practice to enhance the properties of concrete or reinforced concrete elements. Its unique physical and chemical features, such as: resistance to alkali reactions and resistance to unfavorable temperature effect make it better solution for many engineering problems. Basalt fibres can be used as an additives that make concrete composite better in terms of physical and mechanical properties.
However, there is still lack of standardized and verified relations that accurately predict changes that addition of basalt fibres would cause in specific concrete mixture. For design purposes margin of safety should be taken into account.
Maria Wlodarczyka, Igor Jedrzejewskia
Department of Civil Engineering, Warsaw Univerity of Technology, Al. Armii Ludowej 16, Warsaw 00-637, Poland